DataContractJsonSerializer.cs

// Licensed to the .NET Foundation under one or more agreements.
// The .NET Foundation licenses this file to you under the MIT license.

using SerializationTypes;
using System;
using System.Collections;
using System.Collections.Concurrent;
using System.Collections.Generic;
using System.Collections.ObjectModel;
using System.Globalization;
using System.IO;
using System.Linq;
using System.Reflection;
using System.Runtime.Serialization;
using System.Runtime.Serialization.Json;
using System.Text;
using System.Xml;
using System.Xml.Linq;
using Xunit;
using System.Runtime.Serialization.Tests;

public static partial class DataContractJsonSerializerTests
{
#if ReflectionOnly
    private static readonly string SerializationOptionSetterName = "set_Option";

    static DataContractJsonSerializerTests()
    {
        MethodInfo method = typeof(DataContractSerializer).GetMethod(SerializationOptionSetterName, BindingFlags.NonPublic | BindingFlags.Static);
        Assert.True(method != null, $"No method named {SerializationOptionSetterName}");
        method.Invoke(null, new object[] { 1 });
    }
#endif
    [Fact]
    public static void DCJS_BoolAsRoot()
    {
        Assert.True(SerializeAndDeserialize<bool>(true, "true"));
        Assert.False(SerializeAndDeserialize<bool>(false, "false"));
    }

    [Fact]
    public static void DCJS_ByteArrayAsRoot()
    {
        Assert.Null(SerializeAndDeserialize<byte[]>(null, "null"));
        byte[] x = new byte[] { 1, 2 };
        byte[] y = SerializeAndDeserialize<byte[]>(x, @"[1,2]");
        Assert.Equal(x, y);
    }

    [Fact]
    public static void DCJS_CharAsRoot()
    {
        // Special characters
        Assert.StrictEqual((char)0x2f, SerializeAndDeserialize<char>((char)0x2f, @"""\/""")); // Expected output string is: \/
        Assert.StrictEqual((char)0x5c, SerializeAndDeserialize<char>((char)0x5c, @"""\\""")); // \\
        Assert.StrictEqual((char)0x27, SerializeAndDeserialize<char>((char)0x27, @"""'""")); // '
        Assert.StrictEqual((char)0x22, SerializeAndDeserialize<char>((char)0x22, @"""\""""")); // \"

        // There are 5 ranges of characters that have output in the form of "\u<code>".
        // The following tests the start and end character and at least one character in each range
        // and also in between the ranges.

        // #1. 0x0000 - 0x001F
        Assert.StrictEqual(char.MinValue, SerializeAndDeserialize<char>(char.MinValue, @"""\u0000"""));
        Assert.StrictEqual((char)0x10, SerializeAndDeserialize<char>((char)0x10, @"""\u0010"""));
        Assert.StrictEqual((char)0x1f, SerializeAndDeserialize<char>((char)0x1f, @"""\u001f"""));

        // Between #1 and #2
        Assert.StrictEqual('a', SerializeAndDeserialize<char>('a', @"""a""")); // 0x0061

        // #2. 0x0085
        Assert.StrictEqual((char)0x85, SerializeAndDeserialize<char>((char)0x85, @"""\u0085"""));

        // Between #2 and #3
        Assert.StrictEqual('\u00F1', SerializeAndDeserialize<char>('\u00F1', "\"\u00F1\"")); // 0x00F1

        // #3. 0x2028 - 0x2029
        Assert.StrictEqual((char)0x2028, SerializeAndDeserialize<char>((char)0x2028, @"""\u2028"""));
        Assert.StrictEqual((char)0x2029, SerializeAndDeserialize<char>((char)0x2029, @"""\u2029"""));

        // Between #3 and #4
        Assert.StrictEqual('?', SerializeAndDeserialize<char>('?', @"""?""")); // 0x6F22

        // #4. 0xD800 - 0xDFFF
        Assert.StrictEqual((char)0xd800, SerializeAndDeserialize<char>((char)0xd800, @"""\ud800"""));
        Assert.StrictEqual((char)0xdabc, SerializeAndDeserialize<char>((char)0xdabc, @"""\udabc"""));
        Assert.StrictEqual((char)0xdfff, SerializeAndDeserialize<char>((char)0xdfff, @"""\udfff"""));

        // Between #4 and #5
        Assert.StrictEqual((char)0xeabc, SerializeAndDeserialize<char>((char)0xeabc, "\"\uEABC\""));

        // #5. 0xFFFE - 0xFFFF
        Assert.StrictEqual((char)0xfffe, SerializeAndDeserialize<char>((char)0xfffe, @"""\ufffe"""));
        Assert.StrictEqual(char.MaxValue, SerializeAndDeserialize<char>(char.MaxValue, @"""\uffff"""));
    }

    [Fact]
    public static void DCJS_NewLineChars()
    {
        char ch1 = (char)0x0085;
        char ch2 = (char)0x2028;
        char ch3 = (char)0x2029;
        Assert.StrictEqual<char>(SerializeAndDeserialize<char>(ch1, @"""\u0085"""), ch1);
        Assert.StrictEqual<char>(SerializeAndDeserialize<char>(ch2, @"""\u2028"""), ch2);
        Assert.StrictEqual<char>(SerializeAndDeserialize<char>(ch3, @"""\u2029"""), ch3);
    }

    [Fact]
    public static void DCJS_ByteAsRoot()
    {
        Assert.StrictEqual(10, SerializeAndDeserialize<byte>(10, "10"));
        Assert.StrictEqual(byte.MinValue, SerializeAndDeserialize<byte>(byte.MinValue, "0"));
        Assert.StrictEqual(byte.MaxValue, SerializeAndDeserialize<byte>(byte.MaxValue, "255"));
    }

    [Fact]
    public static void DCJS_DateTimeAsRoot()
    {
        // Assume that UTC offset doesn't change more often than once in the day 2013-01-02
        // DO NOT USE TimeZoneInfo.Local.BaseUtcOffset !
        var offsetMinutes = (int)TimeZoneInfo.Local.GetUtcOffset(new DateTime(2013, 1, 2)).TotalMinutes;
        var timeZoneString = string.Format("{0:+;-}{1}", offsetMinutes, new TimeSpan(0, offsetMinutes, 0).ToString(@"hhmm"));
        Assert.StrictEqual(SerializeAndDeserialize<DateTime>(new DateTime(2013, 1, 2).AddMinutes(offsetMinutes), string.Format(@"""\/Date(1357084800000{0})\/""", timeZoneString)), new DateTime(2013, 1, 2).AddMinutes(offsetMinutes));
        Assert.StrictEqual(SerializeAndDeserialize<DateTime>(new DateTime(2013, 1, 2, 3, 4, 5, 6, DateTimeKind.Local).AddMinutes(offsetMinutes), string.Format(@"""\/Date(1357095845006{0})\/""", timeZoneString)), new DateTime(2013, 1, 2, 3, 4, 5, 6, DateTimeKind.Local).AddMinutes(offsetMinutes));
        Assert.StrictEqual(SerializeAndDeserialize<DateTime>(new DateTime(2013, 1, 2, 3, 4, 5, 6, DateTimeKind.Unspecified).AddMinutes(offsetMinutes), string.Format(@"""\/Date(1357095845006{0})\/""", timeZoneString)), new DateTime(2013, 1, 2, 3, 4, 5, 6, DateTimeKind.Unspecified).AddMinutes(offsetMinutes));
        Assert.StrictEqual(SerializeAndDeserialize<DateTime>(new DateTime(2013, 1, 2, 3, 4, 5, 6, DateTimeKind.Utc), @"""\/Date(1357095845006)\/"""), new DateTime(2013, 1, 2, 3, 4, 5, 6, DateTimeKind.Utc));
        Assert.StrictEqual(SerializeAndDeserialize<DateTime>(DateTime.SpecifyKind(DateTime.MinValue, DateTimeKind.Utc), @"""\/Date(-62135596800000)\/"""), DateTime.SpecifyKind(DateTime.MinValue, DateTimeKind.Utc));
        SerializeAndDeserialize<DateTime>(DateTime.SpecifyKind(DateTime.MaxValue, DateTimeKind.Utc), @"""\/Date(253402300799999)\/""");
    }

    [Fact]
    public static void DCJS_DecimalAsRoot()
    {
        foreach (decimal value in new decimal[] { (decimal)-1.2, (decimal)0, (decimal)2.3, decimal.MinValue, decimal.MaxValue })
        {
            Assert.StrictEqual(SerializeAndDeserialize<decimal>(value, value.ToString(CultureInfo.InvariantCulture)), value);
        }
    }

    [Fact]
    public static void DCJS_DoubleAsRoot()
    {
        Assert.StrictEqual(-1.2, SerializeAndDeserialize<double>(-1.2, "-1.2"));
        Assert.StrictEqual(0.0, SerializeAndDeserialize<double>(0.0, "0"));
        Assert.StrictEqual(0.0, SerializeAndDeserialize<double>(-0.0, "-0"));
        Assert.Equal("-0", SerializeAndDeserialize<double>(-0.0, "-0").ToString());
        Assert.StrictEqual(2.3, SerializeAndDeserialize<double>(2.3, "2.3"));
        Assert.StrictEqual(double.MinValue, SerializeAndDeserialize<double>(double.MinValue, "-1.7976931348623157E+308"));
        Assert.StrictEqual(double.MaxValue, SerializeAndDeserialize<double>(double.MaxValue, "1.7976931348623157E+308"));
    }

    [Fact]
    public static void DCJS_FloatAsRoot()
    {
        Assert.StrictEqual((float)-1.2, SerializeAndDeserialize<float>((float)-1.2, "-1.2"));
        Assert.StrictEqual((float)0.0, SerializeAndDeserialize<float>((float)0.0, "0"));
        Assert.StrictEqual((float)0.0, SerializeAndDeserialize<float>((float)-0.0, "-0"));
        Assert.Equal("-0", SerializeAndDeserialize<float>((float)-0.0, "-0").ToString());
        Assert.StrictEqual((float)2.3, SerializeAndDeserialize<float>((float)2.3, "2.3"));
    }

    [Fact]
    public static void DCJS_FloatAsRoot_NotNetFramework()
    {
        Assert.StrictEqual(float.MinValue, SerializeAndDeserialize<float>(float.MinValue, "-3.4028235E+38"));
        Assert.StrictEqual(float.MaxValue, SerializeAndDeserialize<float>(float.MaxValue, "3.4028235E+38"));
    }

    [Fact]
    public static void DCJS_GuidAsRoot()
    {
        foreach (Guid value in new Guid[] { Guid.NewGuid(), Guid.Empty })
        {
            Assert.StrictEqual(SerializeAndDeserialize<Guid>(value, string.Format(@"""{0}""", value.ToString())), value);
        }
    }

    [Fact]
    public static void DCJS_IntAsRoot()
    {
        foreach (int value in new int[] { -1, 0, 2, int.MinValue, int.MaxValue })
        {
            Assert.StrictEqual(SerializeAndDeserialize<int>(value, value.ToString()), value);
        }
    }

    [Fact]
    public static void DCJS_LongAsRoot()
    {
        foreach (long value in new long[] { (long)-1, (long)0, (long)2, long.MinValue, long.MaxValue })
        {
            Assert.StrictEqual(SerializeAndDeserialize<long>(value, value.ToString()), value);
        }
    }

    [Fact]
    public static void DCJS_ObjectAsRoot()
    {
        Assert.StrictEqual(1, SerializeAndDeserialize<object>(1, "1"));
        Assert.StrictEqual(true, SerializeAndDeserialize<object>(true, "true"));
        Assert.Null(SerializeAndDeserialize<object>(null, "null"));
        Assert.StrictEqual("abc", SerializeAndDeserialize<object>("abc", @"""abc"""));
    }

    [Fact]
    public static void DCJS_XmlQualifiedNameAsRoot()
    {
        Assert.StrictEqual(SerializeAndDeserialize<XmlQualifiedName>(new XmlQualifiedName("abc", "def"), @"""abc:def"""), new XmlQualifiedName("abc", "def"));
        Assert.StrictEqual(SerializeAndDeserialize<XmlQualifiedName>(XmlQualifiedName.Empty, @""""""), XmlQualifiedName.Empty);
    }

    [Fact]
    public static void DCJS_ShortAsRoot()
    {
        foreach (short value in new short[] { (short)-1.2, (short)0, (short)2.3, short.MinValue, short.MaxValue })
        {
            Assert.StrictEqual(SerializeAndDeserialize<short>(value, value.ToString()), value);
        }
    }

    [Fact]
    public static void DCJS_SbyteAsRoot()
    {
        foreach (sbyte value in new sbyte[] { (sbyte)3, (sbyte)0, sbyte.MinValue, sbyte.MaxValue })
        {
            Assert.StrictEqual(SerializeAndDeserialize<sbyte>(value, value.ToString()), value);
        }
    }

    [Fact]
    public static void DCJS_StringAsRoot()
    {
        foreach (string value in new string[] { "abc", "  a b  ", null, "", " ", "Hello World! \u6F22 \u00F1" })
        {
            Assert.Equal(SerializeAndDeserialize<string>(value, value == null ? "null" : string.Format(@"""{0}""", value.ToString())), value);
        }

        var testStrings = new[]
        {
            new { value = "\u0000", baseline = "\\u0000" }, // NULL
            new { value = "\u0001", baseline = "\\u0001" },
            new { value = "\u0002", baseline = "\\u0002" },
            new { value = "\u0003", baseline = "\\u0003" },
            new { value = "\u0004", baseline = "\\u0004" },
            new { value = "\u0005", baseline = "\\u0005" },
            new { value = "\u0006", baseline = "\\u0006" },
            new { value = "\u0007", baseline = "\\u0007" },
            new { value = "\u0008", baseline = "\\b" }, // BACKSPACE
            new { value = "\u0009", baseline = "\\t" }, // HORIZONTAL TABULATION
            new { value = "\u000A", baseline = "\\n" }, // LINE FEED (LF)
            new { value = "\u000B", baseline = "\\u000b" }, // LINE TABULATION
            new { value = "\u000C", baseline = "\\f" }, // FORM FEED (FF)
            new { value = "\u000D", baseline = "\\r" }, // CARRIAGE RETURN (CR)
            new { value = "\u000E", baseline = "\\u000e" },
            new { value = "\u000F", baseline = "\\u000f" }, // SHIFT IN
            new { value = "\u0010", baseline = "\\u0010" },
            new { value = "\u0011", baseline = "\\u0011" },
            new { value = "\u0012", baseline = "\\u0012" },
            new { value = "\u0013", baseline = "\\u0013" },
            new { value = "\u0014", baseline = "\\u0014" },
            new { value = "\u0015", baseline = "\\u0015" },
            new { value = "\u0016", baseline = "\\u0016" },
            new { value = "\u0017", baseline = "\\u0017" },
            new { value = "\u0018", baseline = "\\u0018" },
            new { value = "\u0019", baseline = "\\u0019" },
            new { value = "\u001A", baseline = "\\u001a" },
            new { value = "\u001B", baseline = "\\u001b" },
            new { value = "\u001C", baseline = "\\u001c" },
            new { value = "\u001D", baseline = "\\u001d" },
            new { value = "\u001E", baseline = "\\u001e" },
            new { value = "\u001F", baseline = "\\u001f" },
            new { value = "\u0022", baseline = "\\\"" }, // QUOTATION MARK
            new { value = "\u0027", baseline = "'" },
            new { value = "\u005C", baseline = "\\\\" }, // REVERSE SOLIDUS
        };

        foreach (var pair in testStrings)
        {
            Assert.Equal(SerializeAndDeserialize<string>(pair.value, string.Format(@"""{0}""", pair.baseline)), pair.value);
        }
    }

    [Fact]
    public static void DCJS_StringAsRoot_BackwardCompatibility()
    {
        var testStrings = new[]
        {
            new { value = "\u0008", text = @"""\u0008""" }, // BACKSPACE
            new { value = "\u000C", text = @"""\u000c""" }, // FORM FEED (FF)
            new { value = "\u000A", text = @"""\u000a""" }, // LINE FEED (LF)
            new { value = "\u000D", text = @"""\u000d""" }, // CARRIAGE RETURN (CR)
            new { value = "\u0009", text = @"""\u0009""" }, // HORIZONTAL TABULATION
        };

        var serializer = new DataContractJsonSerializer(typeof(string));
        foreach (var pair in testStrings)
        {
            using (var ms = new MemoryStream())
            {
                using (var sw = new StreamWriter(ms))
                {
                    {
                        sw.Write(pair.text);
                        sw.Flush();
                        ms.Position = 0;
                        string actual = (string)serializer.ReadObject(ms);
                        Assert.Equal(pair.value, actual);
                    }
                }
            }
        }
    }

    [Fact]
    public static void DCJS_TimeSpanAsRoot()
    {
        Assert.StrictEqual(SerializeAndDeserialize<TimeSpan>(new TimeSpan(1, 2, 3), @"""PT1H2M3S"""), new TimeSpan(1, 2, 3));
        Assert.StrictEqual(SerializeAndDeserialize<TimeSpan>(TimeSpan.Zero, @"""PT0S"""), TimeSpan.Zero);
        Assert.StrictEqual(SerializeAndDeserialize<TimeSpan>(TimeSpan.MinValue, @"""-P10675199DT2H48M5.4775808S"""), TimeSpan.MinValue);
        Assert.StrictEqual(SerializeAndDeserialize<TimeSpan>(TimeSpan.MaxValue, @"""P10675199DT2H48M5.4775807S"""), TimeSpan.MaxValue);
    }

    [Fact]
    public static void DCJS_UintAsRoot()
    {
        foreach (uint value in new uint[] { (uint)3, (uint)0, uint.MinValue, uint.MaxValue })
        {
            Assert.StrictEqual(SerializeAndDeserialize<uint>(value, value.ToString()), value);
        }
    }

    [Fact]
    public static void DCJS_UlongAsRoot()
    {
        foreach (ulong value in new ulong[] { (ulong)3, (ulong)0, ulong.MinValue, ulong.MaxValue })
        {
            Assert.StrictEqual(SerializeAndDeserialize<ulong>(value, value.ToString()), value);
        }
    }

    [Fact]
    public static void DCJS_UshortAsRoot()
    {
        foreach (ushort value in new ushort[] { (ushort)3, (ushort)0, ushort.MinValue, ushort.MaxValue })
        {
            Assert.StrictEqual(SerializeAndDeserialize<ushort>(value, value.ToString()), value);
        }
    }

    [Fact]
    public static void DCJS_UriAsRoot()
    {
        Assert.StrictEqual(SerializeAndDeserialize<Uri>(new Uri(@"http://abc/"), @"""http:\/\/abc\/"""), new Uri(@"http://abc/"));
        Assert.StrictEqual(SerializeAndDeserialize<Uri>(new Uri(@"http://abc/def/x.aspx?p1=12&p2=34"), @"""http:\/\/abc\/def\/x.aspx?p1=12&p2=34"""), new Uri(@"http://abc/def/x.aspx?p1=12&p2=34"));
    }

    [Fact]
    public static void DCJS_ArrayAsRoot()
    {
        SimpleType[] x = new SimpleType[] { new SimpleType { P1 = "abc", P2 = 11 }, new SimpleType { P1 = "def", P2 = 12 } };
        SimpleType[] y = SerializeAndDeserialize<SimpleType[]>(x, @"[{""P1"":""abc"",""P2"":11},{""P1"":""def"",""P2"":12}]");

        Utils.Equal(x, y, (a, b) => { return SimpleType.AreEqual(a, b); });
    }

    [Fact]
    public static void DCJS_ArrayAsGetSet()
    {
        TypeWithGetSetArrayMembers x = new TypeWithGetSetArrayMembers
        {
            F1 = new SimpleType[] { new SimpleType { P1 = "ab", P2 = 1 }, new SimpleType { P1 = "cd", P2 = 2 } },
            F2 = new int[] { -1, 3 },
            P1 = new SimpleType[] { new SimpleType { P1 = "ef", P2 = 5 }, new SimpleType { P1 = "gh", P2 = 7 } },
            P2 = new int[] { 11, 12 }
        };
        TypeWithGetSetArrayMembers y = SerializeAndDeserialize<TypeWithGetSetArrayMembers>(x, @"{""F1"":[{""P1"":""ab"",""P2"":1},{""P1"":""cd"",""P2"":2}],""F2"":[-1,3],""P1"":[{""P1"":""ef"",""P2"":5},{""P1"":""gh"",""P2"":7}],""P2"":[11,12]}");

        Assert.NotNull(y);
        Utils.Equal(x.F1, y.F1, (a, b) => { return SimpleType.AreEqual(a, b); });
        Assert.Equal(x.F2, y.F2);
        Utils.Equal(x.P1, y.P1, (a, b) => { return SimpleType.AreEqual(a, b); });
        Assert.Equal(x.P2, y.P2);
    }

    [Fact]
    public static void DCJS_ArrayAsGetOnly()
    {
        TypeWithGetOnlyArrayProperties x = new TypeWithGetOnlyArrayProperties();
        x.P1[0] = new SimpleType { P1 = "ab", P2 = 1 };
        x.P1[1] = new SimpleType { P1 = "cd", P2 = 2 };
        x.P2[0] = -1;
        x.P2[1] = 3;

        TypeWithGetOnlyArrayProperties y = SerializeAndDeserialize<TypeWithGetOnlyArrayProperties>(x, @"{""P1"":[{""P1"":""ab"",""P2"":1},{""P1"":""cd"",""P2"":2}],""P2"":[-1,3]}");

        Assert.NotNull(y);
        Utils.Equal(x.P1, y.P1, (a, b) => { return SimpleType.AreEqual(a, b); });
        Assert.Equal(x.P2, y.P2);
    }

    [Fact]
    public static void DCJS_DictionaryGenericRoot()
    {
        Dictionary<string, int> x = new Dictionary<string, int>();
        x.Add("one", 1);
        x.Add("two", 2);

        Dictionary<string, int> y = SerializeAndDeserialize<Dictionary<string, int>>(x, @"[{""Key"":""one"",""Value"":1},{""Key"":""two"",""Value"":2}]");

        Assert.NotNull(y);
        Assert.Equal(2, y.Count);
        Assert.Equal(1, y["one"]);
        Assert.Equal(2, y["two"]);
    }

    [Fact]
    public static void DCJS_DictionaryGenericMembers()
    {
        TypeWithDictionaryGenericMembers x = new TypeWithDictionaryGenericMembers
        {
            F1 = new Dictionary<string, int>(),
            F2 = new Dictionary<string, int>(),
            P1 = new Dictionary<string, int>(),
            P2 = new Dictionary<string, int>()
        };
        x.F1.Add("ab", 12);
        x.F1.Add("cd", 15);
        x.F2.Add("ef", 17);
        x.F2.Add("gh", 19);
        x.P1.Add("12", 120);
        x.P1.Add("13", 130);
        x.P2.Add("14", 140);
        x.P2.Add("15", 150);

        x.RO1.Add(true, 't');
        x.RO1.Add(false, 'f');

        x.RO2.Add(true, 'a');
        x.RO2.Add(false, 'b');

        TypeWithDictionaryGenericMembers y = SerializeAndDeserialize<TypeWithDictionaryGenericMembers>(x, @"{""F1"":[{""Key"":""ab"",""Value"":12},{""Key"":""cd"",""Value"":15}],""F2"":[{""Key"":""ef"",""Value"":17},{""Key"":""gh"",""Value"":19}],""P1"":[{""Key"":""12"",""Value"":120},{""Key"":""13"",""Value"":130}],""P2"":[{""Key"":""14"",""Value"":140},{""Key"":""15"",""Value"":150}],""RO1"":[{""Key"":true,""Value"":""t""},{""Key"":false,""Value"":""f""}],""RO2"":[{""Key"":true,""Value"":""a""},{""Key"":false,""Value"":""b""}]}");
        Assert.NotNull(y);

        Assert.NotNull(y.F1);
        Assert.True(y.F1.Count == 2);
        Assert.True(y.F1["ab"] == 12);
        Assert.True(y.F1["cd"] == 15);

        Assert.NotNull(y.F2);
        Assert.True(y.F2.Count == 2);
        Assert.True(y.F2["ef"] == 17);
        Assert.True(y.F2["gh"] == 19);

        Assert.NotNull(y.P1);
        Assert.True(y.P1.Count == 2);
        Assert.True(y.P1["12"] == 120);
        Assert.True(y.P1["13"] == 130);

        Assert.NotNull(y.P2);
        Assert.True(y.P2.Count == 2);
        Assert.True(y.P2["14"] == 140);
        Assert.True(y.P2["15"] == 150);

        Assert.NotNull(y.RO1);
        Assert.True(y.RO1.Count == 2);
        Assert.True(y.RO1[true] == 't');
        Assert.True(y.RO1[false] == 'f');

        Assert.NotNull(y.RO2);
        Assert.True(y.RO2.Count == 2);
        Assert.True(y.RO2[true] == 'a');
        Assert.True(y.RO2[false] == 'b');
    }

    [Fact]
    public static void DCJS_GetOonlyDictionary_UseSimpleDictionaryFormat()
    {
        var x = new TypeWithDictionaryGenericMembers();

        x.RO1.Add(true, 't');
        x.RO1.Add(false, 'f');

        x.RO2.Add(true, 'a');
        x.RO2.Add(false, 'b');

        var settings = new DataContractJsonSerializerSettings { UseSimpleDictionaryFormat = true };
        string baseline = "{\"F1\":null,\"F2\":null,\"P1\":null,\"P2\":null,\"RO1\":{\"True\":\"t\",\"False\":\"f\"},\"RO2\":{\"True\":\"a\",\"False\":\"b\"}}";
        var y = SerializeAndDeserialize(x, baseline, settings);
        Assert.NotNull(y);

        Assert.NotNull(y.RO1);
        Assert.True(y.RO1.Count == 2);
        Assert.True(y.RO1[true] == 't');
        Assert.True(y.RO1[false] == 'f');

        Assert.NotNull(y.RO2);
        Assert.True(y.RO2.Count == 2);
        Assert.True(y.RO2[true] == 'a');
        Assert.True(y.RO2[false] == 'b');
    }


    [Fact]
    public static void DCJS_Dictionary_UseSimpleDictionaryFormat_VariousKeyTypes()
    {
        DCJS_Dictionary_UseSimpleDictionaryFormat((int)1, 1);
        DCJS_Dictionary_UseSimpleDictionaryFormat((uint)1, 1);
        DCJS_Dictionary_UseSimpleDictionaryFormat((short)1, 1);
        DCJS_Dictionary_UseSimpleDictionaryFormat((long)1, 1);
        DCJS_Dictionary_UseSimpleDictionaryFormat((byte)1, 1);
        DCJS_Dictionary_UseSimpleDictionaryFormat((double)1.0, 1);
        DCJS_Dictionary_UseSimpleDictionaryFormat((float)1.0, 1);
        DCJS_Dictionary_UseSimpleDictionaryFormat((char)'a', 1);
    }

    private static void DCJS_Dictionary_UseSimpleDictionaryFormat<T>(T key, int value)
    {
        var settings = new DataContractJsonSerializerSettings { UseSimpleDictionaryFormat = true };
        var dict = new Dictionary<T, int>() { { key, 1 } };
        var actual = SerializeAndDeserialize(dict, string.Empty, settings, skipStringCompare: true);
        Assert.NotNull(actual);
        Assert.Equal(dict.Count, actual.Count);
        Assert.Equal(dict[key], actual[key]);
    }

    [Fact]
    public static void DCJS_DictionaryRoot()
    {
        MyDictionary x = new MyDictionary();
        x.Add(1, "one");
        x.Add(2, "two");

        MyDictionary y = SerializeAndDeserialize<MyDictionary>(x, @"[{""Key"":1,""Value"":""one""},{""Key"":2,""Value"":""two""}]");

        Assert.NotNull(y);
        Assert.True(y.Count == 2);
        Assert.True((string)y[1] == "one");
        Assert.True((string)y[2] == "two");
    }

    [Fact]
    public static void DCJS_DictionaryMembers()
    {
        TypeWithDictionaryMembers x = new TypeWithDictionaryMembers();

        x.F1 = new MyDictionary();
        x.F1.Add("ab", 12);
        x.F1.Add("cd", 15);

        x.F2 = new MyDictionary();
        x.F2.Add("ef", 17);
        x.F2.Add("gh", 19);

        x.P1 = new MyDictionary();
        x.P1.Add("12", 120);
        x.P1.Add("13", 130);

        x.P2 = new MyDictionary();
        x.P2.Add("14", 140);
        x.P2.Add("15", 150);

        x.RO1.Add(true, 't');
        x.RO1.Add(false, 'f');

        x.RO2.Add(true, 'a');
        x.RO2.Add(false, 'b');

        TypeWithDictionaryMembers y = SerializeAndDeserialize<TypeWithDictionaryMembers>(x, @"{""F1"":[{""Key"":""ab"",""Value"":12},{""Key"":""cd"",""Value"":15}],""F2"":[{""Key"":""ef"",""Value"":17},{""Key"":""gh"",""Value"":19}],""P1"":[{""Key"":""12"",""Value"":120},{""Key"":""13"",""Value"":130}],""P2"":[{""Key"":""14"",""Value"":140},{""Key"":""15"",""Value"":150}],""RO1"":[{""Key"":true,""Value"":""t""},{""Key"":false,""Value"":""f""}],""RO2"":[{""Key"":true,""Value"":""a""},{""Key"":false,""Value"":""b""}]}");
        Assert.NotNull(y);

        Assert.NotNull(y.F1);
        Assert.True(y.F1.Count == 2);
        Assert.True((int)y.F1["ab"] == 12);
        Assert.True((int)y.F1["cd"] == 15);

        Assert.NotNull(y.F2);
        Assert.True(y.F2.Count == 2);
        Assert.True((int)y.F2["ef"] == 17);
        Assert.True((int)y.F2["gh"] == 19);

        Assert.NotNull(y.P1);
        Assert.True(y.P1.Count == 2);
        Assert.True((int)y.P1["12"] == 120);
        Assert.True((int)y.P1["13"] == 130);

        Assert.NotNull(y.P2);
        Assert.True(y.P2.Count == 2);
        Assert.True((int)y.P2["14"] == 140);
        Assert.True((int)y.P2["15"] == 150);

        Assert.NotNull(y.RO1);
        Assert.True(y.RO1.Count == 2);
        Assert.True((string)y.RO1[true] == "t");
        Assert.True((string)y.RO1[false] == "f");

        Assert.NotNull(y.RO2);
        Assert.True(y.RO2.Count == 2);
        Assert.True((string)y.RO2[true] == "a");
        Assert.True((string)y.RO2[false] == "b");
    }

    [Fact]
    public static void DCJS_ListGenericRoot()
    {
        List<string> x = new List<string>();
        x.Add("zero");
        x.Add("one");

        List<string> y = SerializeAndDeserialize<List<string>>(x, @"[""zero"",""one""]");

        Assert.NotNull(y);
        Assert.True(y.Count == 2);
        Assert.True(y[0] == "zero");
        Assert.True(y[1] == "one");
    }

    [Fact]
    public static void DCJS_ListGenericMembers()
    {
        TypeWithListGenericMembers x = new TypeWithListGenericMembers();

        x.F1 = new List<string>();
        x.F1.Add("zero");
        x.F1.Add("one");

        x.F2 = new List<string>();
        x.F2.Add("abc");
        x.F2.Add("def");

        x.P1 = new List<int>();
        x.P1.Add(10);
        x.P1.Add(20);

        x.P2 = new List<int>();
        x.P2.Add(12);
        x.P2.Add(34);

        x.RO1.Add('a');
        x.RO1.Add('b');

        x.RO2.Add('c');
        x.RO2.Add('d');

        TypeWithListGenericMembers y = SerializeAndDeserialize<TypeWithListGenericMembers>(x, @"{""F1"":[""zero"",""one""],""F2"":[""abc"",""def""],""P1"":[10,20],""P2"":[12,34],""RO1"":[""a"",""b""],""RO2"":[""c"",""d""]}");
        Assert.NotNull(y);

        Assert.NotNull(y.F1);
        Assert.True(y.F1.Count == 2);
        Assert.True(y.F1[0] == "zero");
        Assert.True(y.F1[1] == "one");

        Assert.NotNull(y.F2);
        Assert.True(y.F2.Count == 2);
        Assert.True(y.F2[0] == "abc");
        Assert.True(y.F2[1] == "def");

        Assert.NotNull(y.P1);
        Assert.True(y.P1.Count == 2);
        Assert.True(y.P1[0] == 10);
        Assert.True(y.P1[1] == 20);

        Assert.NotNull(y.P2);
        Assert.True(y.P2.Count == 2);
        Assert.True(y.P2[0] == 12);
        Assert.True(y.P2[1] == 34);

        Assert.NotNull(y.RO1);
        Assert.True(y.RO1.Count == 2);
        Assert.True(y.RO1[0] == 'a');
        Assert.True(y.RO1[1] == 'b');

        Assert.NotNull(y.RO2);
        Assert.True(y.RO2.Count == 2);
        Assert.True(y.RO2[0] == 'c');
        Assert.True(y.RO2[1] == 'd');
    }

    [Fact]
    public static void DCJS_CollectionGenericRoot()
    {
        MyCollection<string> x = new MyCollection<string>("a1", "a2");
        MyCollection<string> y = SerializeAndDeserialize<MyCollection<string>>(x, @"[""a1"",""a2""]");

        Assert.NotNull(y);
        Assert.True(y.Count == 2);

        foreach (var item in x)
        {
            Assert.Contains(item, y);
        }
    }

    [Fact]
    public static void DCJS_CollectionGenericMembers()
    {
        TypeWithCollectionGenericMembers x = new TypeWithCollectionGenericMembers
        {
            F1 = new MyCollection<string>("a1", "a2"),
            F2 = new MyCollection<string>("b1", "b2"),
            P1 = new MyCollection<string>("c1", "c2"),
            P2 = new MyCollection<string>("d1", "d2"),
        };
        x.RO1.Add("abc");
        x.RO2.Add("xyz");

        TypeWithCollectionGenericMembers y = SerializeAndDeserialize<TypeWithCollectionGenericMembers>(x, @"{""F1"":[""a1"",""a2""],""F2"":[""b1"",""b2""],""P1"":[""c1"",""c2""],""P2"":[""d1"",""d2""],""RO1"":[""abc""],""RO2"":[""xyz""]}");
        Assert.NotNull(y);
        Assert.True(y.F1.Count == 2, getCheckFailureMsg("F1"));
        Assert.True(y.F2.Count == 2, getCheckFailureMsg("F2"));
        Assert.True(y.P1.Count == 2, getCheckFailureMsg("P1"));
        Assert.True(y.P2.Count == 2, getCheckFailureMsg("P2"));
        Assert.True(y.RO1.Count == 1, getCheckFailureMsg("RO1"));
        Assert.True(y.RO2.Count == 1, getCheckFailureMsg("RO2"));



        foreach (var item in x.F1)
        {
            Assert.True(y.F1.Contains(item), getCheckFailureMsg("F1"));
        }
        foreach (var item in x.F2)
        {
            Assert.True(y.F2.Contains(item), getCheckFailureMsg("F2"));
        }
        foreach (var item in x.P1)
        {
            Assert.True(y.P1.Contains(item), getCheckFailureMsg("P1"));
        }
        foreach (var item in x.P2)
        {
            Assert.True(y.P2.Contains(item), getCheckFailureMsg("P2"));
        }
        foreach (var item in x.RO1)
        {
            Assert.True(y.RO1.Contains(item), getCheckFailureMsg("RO1"));
        }
        foreach (var item in x.RO2)
        {
            Assert.True(y.RO2.Contains(item), getCheckFailureMsg("RO2"));
        }
    }

    [Fact]
    public static void DCJS_ListRoot()
    {
        MyList x = new MyList("a1", "a2");
        MyList y = SerializeAndDeserialize<MyList>(x, @"[""a1"",""a2""]");

        Assert.NotNull(y);
        Assert.True(y.Count == 2);
        foreach (var item in x)
        {
            Assert.True(y.Contains(item));
        }
    }

    [Fact]
    public static void DCJS_ListMembers()
    {
        TypeWithListMembers x = new TypeWithListMembers
        {
            F1 = new MyList("a1", "a2"),
            F2 = new MyList("b1", "b2"),
            P1 = new MyList("c1", "c2"),
            P2 = new MyList("d1", "d2"),
        };
        x.RO1.Add("abc");
        x.RO2.Add("xyz");

        TypeWithListMembers y = SerializeAndDeserialize<TypeWithListMembers>(x, @"{""F1"":[""a1"",""a2""],""F2"":[""b1"",""b2""],""P1"":[""c1"",""c2""],""P2"":[""d1"",""d2""],""RO1"":[""abc""],""RO2"":[""xyz""]}");
        Assert.NotNull(y);
        Assert.True(y.F1.Count == 2, getCheckFailureMsg("F1"));
        Assert.True(y.F2.Count == 2, getCheckFailureMsg("F2"));
        Assert.True(y.P1.Count == 2, getCheckFailureMsg("P1"));
        Assert.True(y.P2.Count == 2, getCheckFailureMsg("P2"));
        Assert.True(y.RO1.Count == 1, getCheckFailureMsg("RO1"));
        Assert.True(y.RO2.Count == 1, getCheckFailureMsg("RO2"));

        Assert.True((string)x.F1[0] == (string)y.F1[0], getCheckFailureMsg("F1"));
        Assert.True((string)x.F1[1] == (string)y.F1[1], getCheckFailureMsg("F1"));
        Assert.True((string)x.F2[0] == (string)y.F2[0], getCheckFailureMsg("F2"));
        Assert.True((string)x.F2[1] == (string)y.F2[1], getCheckFailureMsg("F2"));
        Assert.True((string)x.P1[0] == (string)y.P1[0], getCheckFailureMsg("P1"));
        Assert.True((string)x.P1[1] == (string)y.P1[1], getCheckFailureMsg("P1"));
        Assert.True((string)x.P2[0] == (string)y.P2[0], getCheckFailureMsg("P2"));
        Assert.True((string)x.P2[1] == (string)y.P2[1], getCheckFailureMsg("P2"));
        Assert.True((string)x.RO1[0] == (string)y.RO1[0], getCheckFailureMsg("RO1"));
        Assert.True((string)x.RO2[0] == (string)y.RO2[0], getCheckFailureMsg("RO2"));
    }

    [Fact]
    public static void DCJS_EnumerableGenericRoot()
    {
        MyEnumerable<string> x = new MyEnumerable<string>("a1", "a2");
        MyEnumerable<string> y = SerializeAndDeserialize<MyEnumerable<string>>(x, @"[""a1"",""a2""]");

        Assert.NotNull(y);
        Assert.True(y.Count == 2);

        string actual = string.Join("", y);
        Assert.Equal("a1a2", actual);
    }

    [Fact]
    public static void DCJS_EnumerableGenericMembers()
    {
        TypeWithEnumerableGenericMembers x = new TypeWithEnumerableGenericMembers
        {
            F1 = new MyEnumerable<string>("a1", "a2"),
            F2 = new MyEnumerable<string>("b1", "b2"),
            P1 = new MyEnumerable<string>("c1", "c2"),
            P2 = new MyEnumerable<string>("d1", "d2")
        };
        x.RO1.Add("abc");

        TypeWithEnumerableGenericMembers y = SerializeAndDeserialize<TypeWithEnumerableGenericMembers>(x, @"{""F1"":[""a1"",""a2""],""F2"":[""b1"",""b2""],""P1"":[""c1"",""c2""],""P2"":[""d1"",""d2""],""RO1"":[""abc""]}");

        Assert.NotNull(y);
        Assert.True(y.F1.Count == 2);
        Assert.True(((string[])y.F2).Length == 2);
        Assert.True(y.P1.Count == 2);
        Assert.True(((string[])y.P2).Length == 2);
        Assert.True(y.RO1.Count == 1);
    }

    [Fact]
    public static void DCJS_CollectionRoot()
    {
        MyCollection x = new MyCollection('a', 45);
        MyCollection y = SerializeAndDeserialize<MyCollection>(x, @"[""a"",45]");

        Assert.NotNull(y);
        Assert.True(y.Count == 2);
        Assert.True((string)y[0] == "a");
        Assert.True((int)y[1] == 45);
    }

    [Fact]
    public static void DCJS_CollectionMembers()
    {
        TypeWithCollectionMembers x = new TypeWithCollectionMembers
        {
            F1 = new MyCollection('a', 45),
            F2 = new MyCollection("ab", true),
            P1 = new MyCollection("x", "y"),
            P2 = new MyCollection(false, true)
        };
        x.RO1.Add("abc");

        TypeWithCollectionMembers y = SerializeAndDeserialize<TypeWithCollectionMembers>(x, @"{""F1"":[""a"",45],""F2"":[""ab"",true],""P1"":[""x"",""y""],""P2"":[false,true],""RO1"":[""abc""]}");
        Assert.NotNull(y);

        Assert.NotNull(y.F1);
        Assert.True(y.F1.Count == 2);
        Assert.True((string)y.F1[0] == "a");
        Assert.True((int)y.F1[1] == 45);

        Assert.NotNull(y.F2);
        Assert.True(((object[])y.F2).Length == 2);
        Assert.True((string)((object[])y.F2)[0] == "ab");
        Assert.True((bool)((object[])y.F2)[1] == true);

        Assert.True(y.P1.Count == 2);
        Assert.True((string)y.P1[0] == "x");
        Assert.True((string)y.P1[1] == "y");

        Assert.True(((object[])y.P2).Length == 2);
        Assert.True((bool)((object[])y.P2)[0] == false);
        Assert.True((bool)((object[])y.P2)[1] == true);

        Assert.True(y.RO1.Count == 1);
        Assert.True((string)y.RO1[0] == "abc");
    }

    [Fact]
    public static void DCJS_EnumerableRoot()
    {
        MyEnumerable x = new MyEnumerable("abc", 3);
        MyEnumerable y = SerializeAndDeserialize<MyEnumerable>(x, @"[""abc"",3]");

        Assert.NotNull(y);
        Assert.True(y.Count == 2);
        Assert.True((string)y[0] == "abc");
        Assert.True((int)y[1] == 3);
    }

    [Fact]
    public static void DCJS_EnumerableMembers()
    {
        TypeWithEnumerableMembers x = new TypeWithEnumerableMembers
        {
            F1 = new MyEnumerable('a', 45),
            F2 = new MyEnumerable("ab", true),
            P1 = new MyEnumerable("x", "y"),
            P2 = new MyEnumerable(false, true)
        };
        x.RO1.Add('x');

        TypeWithEnumerableMembers y = SerializeAndDeserialize<TypeWithEnumerableMembers>(x, @"{""F1"":[""a"",45],""F2"":[""ab"",true],""P1"":[""x"",""y""],""P2"":[false,true],""RO1"":[""x""]}");
        Assert.NotNull(y);

        Assert.True(y.F1.Count == 2);
        Assert.True((string)y.F1[0] == "a");
        Assert.True((int)y.F1[1] == 45);

        Assert.True(((object[])y.F2).Length == 2);
        Assert.True((string)((object[])y.F2)[0] == "ab");
        Assert.True((bool)((object[])y.F2)[1] == true);

        Assert.True(y.P1.Count == 2);
        Assert.True((string)y.P1[0] == "x");
        Assert.True((string)y.P1[1] == "y");

        Assert.True(((object[])y.P2).Length == 2);
        Assert.True((bool)((object[])y.P2)[0] == false);
        Assert.True((bool)((object[])y.P2)[1] == true);

        Assert.True(y.RO1.Count == 1);
        Assert.True((string)y.RO1[0] == "x");
    }

    [Fact]
    public static void DCJS_CustomType()
    {
        MyTypeA x = new MyTypeA
        {
            PropX = new MyTypeC { PropC = 'a', PropB = true },
            PropY = 45,
        };
        MyTypeA y = SerializeAndDeserialize<MyTypeA>(x, @"{""P_Col_Array"":null,""PropX"":{""__type"":""MyTypeC:#SerializationTypes"",""PropA"":null,""PropC"":""a"",""PropB"":true},""PropY"":45}");

        Assert.NotNull(y);
        Assert.NotNull(y.PropX);
        Assert.StrictEqual(x.PropX.PropC, y.PropX.PropC);
        Assert.StrictEqual(((MyTypeC)x.PropX).PropB, ((MyTypeC)y.PropX).PropB);
        Assert.StrictEqual(x.PropY, y.PropY);
    }

    [Fact]
    public static void DCJS_DataContractAttribute()
    {
        SerializeAndDeserialize<DCA_1>(new DCA_1 { P1 = "xyz" }, @"{}");
        SerializeAndDeserialize<DCA_2>(new DCA_2 { P1 = "xyz" }, @"{}");
        SerializeAndDeserialize<DCA_3>(new DCA_3 { P1 = "xyz" }, @"{}");
        SerializeAndDeserialize<DCA_5>(new DCA_5 { P1 = "xyz" }, @"{}");
    }

    [Fact]
    public static void DCJS_DataMemberAttribute()
    {
        SerializeAndDeserialize<DMA_1>(new DMA_1 { P1 = "abc", P2 = 12, P3 = true, P4 = 'a', P5 = 10, MyDataMemberInAnotherNamespace = new MyDataContractClass04_1() { MyDataMember = "Test" }, Order100 = true, OrderMaxValue = false }, @"{""MyDataMemberInAnotherNamespace"":{""MyDataMember"":""Test""},""P1"":""abc"",""P4"":""a"",""P5"":10,""xyz"":12,""P3"":true,""Order100"":true,""OrderMaxValue"":false}");
    }

    [Fact]
    public static void DCJS_IgnoreDataMemberAttribute()
    {
        IDMA_1 x = new IDMA_1 { MyDataMember = "MyDataMember", MyIgnoreDataMember = "MyIgnoreDataMember", MyUnsetDataMember = "MyUnsetDataMember" };
        IDMA_1 y = SerializeAndDeserialize<IDMA_1>(x, @"{""MyDataMember"":""MyDataMember""}");
        Assert.NotNull(y);
        Assert.Equal(x.MyDataMember, y.MyDataMember);
        Assert.Null(y.MyIgnoreDataMember);
        Assert.Null(y.MyUnsetDataMember);
    }

    [Fact]
    public static void DCJS_EnumAsRoot()
    {
        Assert.StrictEqual(MyEnum.Two, SerializeAndDeserialize<MyEnum>(MyEnum.Two, "1"));
        Assert.StrictEqual(ByteEnum.Option1, SerializeAndDeserialize<ByteEnum>(ByteEnum.Option1, "1"));
        Assert.StrictEqual(SByteEnum.Option1, SerializeAndDeserialize<SByteEnum>(SByteEnum.Option1, "1"));
        Assert.StrictEqual(ShortEnum.Option1, SerializeAndDeserialize<ShortEnum>(ShortEnum.Option1, "1"));
        Assert.StrictEqual(IntEnum.Option1, SerializeAndDeserialize<IntEnum>(IntEnum.Option1, "1"));
        Assert.StrictEqual(UIntEnum.Option1, SerializeAndDeserialize<UIntEnum>(UIntEnum.Option1, "1"));
        Assert.StrictEqual(LongEnum.Option1, SerializeAndDeserialize<LongEnum>(LongEnum.Option1, "1"));
        Assert.StrictEqual(ULongEnum.Option1, SerializeAndDeserialize<ULongEnum>(ULongEnum.Option1, "1"));
    }

    [Fact]
    public static void DCJS_EnumAsMember()
    {
        TypeWithEnumMembers x = new TypeWithEnumMembers { F1 = MyEnum.Three, P1 = MyEnum.Two };
        TypeWithEnumMembers y = SerializeAndDeserialize<TypeWithEnumMembers>(x, @"{""F1"":2,""P1"":1}");

        Assert.NotNull(y);
        Assert.StrictEqual(x.F1, y.F1);
        Assert.StrictEqual(x.P1, y.P1);
    }

    [Fact]
    public static void DCJS_DCClassWithEnumAndStruct()
    {
        var x = new DCClassWithEnumAndStruct(true);
        var y = SerializeAndDeserialize<DCClassWithEnumAndStruct>(x, @"{""MyEnum1"":0,""MyStruct"":{""Data"":""Data""}}");

        Assert.StrictEqual<DCStruct>(x.MyStruct, y.MyStruct);
        Assert.StrictEqual(x.MyEnum1, y.MyEnum1);
    }

    [Fact]
    public static void DCJS_SuspensionManager()
    {
        var dict2 = new Dictionary<string, object> { { "Key2-0", "Value2-0" } };
        var dict1 = new Dictionary<string, object> { { "Key1-0", "Value1-0" }, { "Key1-1", dict2 } };
        var dict0 = new Dictionary<string, object> { { "Key0", dict1 } };

        var y = SerializeAndDeserialize<Dictionary<string, object>>(dict0, @"[{""Key"":""Key0"",""Value"":[{""__type"":""KeyValuePairOfstringanyType:#System.Collections.Generic"",""key"":""Key1-0"",""value"":""Value1-0""},{""__type"":""KeyValuePairOfstringanyType:#System.Collections.Generic"",""key"":""Key1-1"",""value"":[{""__type"":""KeyValuePairOfstringanyType:#System.Collections.Generic"",""key"":""Key2-0"",""value"":""Value2-0""}]}]}]"
        );
        Assert.NotNull(y);
        Assert.StrictEqual(1, y.Count);
        Assert.True(y["Key0"] is object[]);
        Assert.Equal("Key1-0", ((KeyValuePair<string, object>)((object[])y["Key0"])[0]).Key);
        Assert.StrictEqual("Value1-0", ((KeyValuePair<string, object>)((object[])y["Key0"])[0]).Value);
        Assert.True(((KeyValuePair<string, object>)((object[])y["Key0"])[1]).Value is object[]);
        Assert.StrictEqual("Value2-0", ((KeyValuePair<string, object>)((object[])((KeyValuePair<string, object>)((object[])y["Key0"])[1]).Value)[0]).Value);
    }

    [Fact]
    public static void DCJS_KeyValuePairOfStringObject()
    {
        var x = new KeyValuePair<string, object>("key1", "key1value");

        var y = SerializeAndDeserialize<KeyValuePair<string, object>>(x, @"{""key"":""key1"",""value"":""key1value""}");
        Assert.Equal("key1", y.Key);
        Assert.StrictEqual("key1value", y.Value);
    }

    [Fact]
    public static void DCJS_BuiltInTypes()
    {
        BuiltInTypes x = new BuiltInTypes
        {
            ByteArray = new byte[] { 1, 2 }
        };
        BuiltInTypes y = SerializeAndDeserialize<BuiltInTypes>(x, @"{""ByteArray"":[1,2]}");

        Assert.NotNull(y);
        Assert.Equal<byte>(x.ByteArray, y.ByteArray);
    }

    [Fact]
    public static void DCJS_DictionaryWithVariousKeyValueTypes()
    {
        var x = new DictionaryWithVariousKeyValueTypes(true);
        var y = SerializeAndDeserialize<DictionaryWithVariousKeyValueTypes>(x, @"{""WithEnums"":[{""Key"":1,""Value"":2},{""Key"":0,""Value"":0}],""WithNullables"":[{""Key"":-32768,""Value"":true},{""Key"":0,""Value"":false},{""Key"":32767,""Value"":null}],""WithStructs"":[{""Key"":{""value"":10},""Value"":{""value"":12}},{""Key"":{""value"":2147483647},""Value"":{""value"":-2147483648}}]}");

        Assert.StrictEqual(MyEnum.Three, y.WithEnums[MyEnum.Two]);
        Assert.StrictEqual(MyEnum.One, y.WithEnums[MyEnum.One]);
        Assert.StrictEqual<StructNotSerializable>(y.WithStructs[new StructNotSerializable() { value = 10 }], new StructNotSerializable() { value = 12 });
        Assert.StrictEqual<StructNotSerializable>(y.WithStructs[new StructNotSerializable() { value = int.MaxValue }], new StructNotSerializable() { value = int.MinValue });
        Assert.StrictEqual(true, y.WithNullables[short.MinValue]);
        Assert.StrictEqual(false, y.WithNullables[0]);
        Assert.Null(y.WithNullables[short.MaxValue]);
    }

    [Fact]
    public static void DCJS_DictionaryWithTypeSimpleWithDictionaryMembers()
    {
        Type type = typeof(TypeWithSimpleDictionaryMember);
        DataContractJsonSerializer serializer = new DataContractJsonSerializer(type);

        // Note that there is an extra "," before the final "}"
        string input = @"{""F1"":[{""Key"":""key"",""Value"":1}],}";

        TypeWithSimpleDictionaryMember obj;
        using (var ms = new MemoryStream())
        {
            using (var writer = new StreamWriter(ms))
            {
                writer.Write(input);
                writer.Flush();
                ms.Position = 0;

                obj = (TypeWithSimpleDictionaryMember)serializer.ReadObject(ms);
            }
        }

        var x = obj;
        var y = SerializeAndDeserialize<TypeWithSimpleDictionaryMember>(x, @"{""F1"":[{""Key"":""key"",""Value"":1}]}");

        Assert.True(y != null);
        Assert.True(y.F1["key"] == 1);
    }

    [Fact]
    public static void DCJS_TypesWithArrayOfOtherTypes()
    {
        var x = new TypeHasArrayOfASerializedAsB(true);

        var y = SerializeAndDeserialize<TypeHasArrayOfASerializedAsB>(x, @"{""Items"":[{""Name"":""typeAValue""},{""Name"":""typeBValue""}]}");
        Assert.Equal(x.Items[0].Name, y.Items[0].Name);
        Assert.Equal(x.Items[1].Name, y.Items[1].Name);
    }

    [Fact]
    public static void DCJS_WithDuplicateNames()
    {
        var x = new WithDuplicateNames(true);
        var y = SerializeAndDeserialize<WithDuplicateNames>(x, "{\"ClassA1\":{\"Name\":\"Hello World! \u6F22 \u00F1\"},\"ClassA2\":{\"Nombre\":\"\"},\"EnumA1\":1,\"EnumA2\":1,\"StructA1\":{\"Text\":\"\"},\"StructA2\":{\"Texto\":\"\"}}");

        Assert.Equal(x.ClassA1.Name, y.ClassA1.Name);
        Assert.StrictEqual(x.StructA1, y.StructA1);
        Assert.StrictEqual(x.EnumA1, y.EnumA1);
        Assert.StrictEqual(x.EnumA2, y.EnumA2);
        Assert.StrictEqual(x.StructA2, y.StructA2);
    }

    [Fact]
    public static void DCJS_XElementAsRoot()
    {
        var original = new XElement("ElementName1");
        original.SetAttributeValue(XName.Get("Attribute1"), "AttributeValue1");
        original.SetValue("Value1");
        var actual = SerializeAndDeserialize<XElement>(original, @"""<ElementName1 Attribute1=\""AttributeValue1\"">Value1<\/ElementName1>""");

        VerifyXElementObject(original, actual);
    }

    [Fact]
    public static void DCJS_WithXElement()
    {
        var original = new WithXElement(true);
        var actual = SerializeAndDeserialize<WithXElement>(original, @"{""e"":""<ElementName1 Attribute1=\""AttributeValue1\"">Value1<\/ElementName1>""}",
            skipStringCompare: true);

        VerifyXElementObject(original.e, actual.e);
    }

    private static void VerifyXElementObject(XElement x1, XElement x2, bool checkFirstAttribute = true)
    {
        Assert.Equal(x1.Value, x2.Value);
        Assert.StrictEqual(x1.Name, x2.Name);
        if (checkFirstAttribute)
        {
            Assert.StrictEqual(x1.FirstAttribute.Name, x2.FirstAttribute.Name);
            Assert.Equal(x1.FirstAttribute.Value, x2.FirstAttribute.Value);
        }
    }

    [Fact]
    public static void DCJS_WithXElementWithNestedXElement()
    {
        var original = new WithXElementWithNestedXElement(true);
        var actual = SerializeAndDeserialize<WithXElementWithNestedXElement>(original, @"{""e1"":""<ElementName1 Attribute1=\""AttributeValue1\""><ElementName2 Attribute2=\""AttributeValue2\"">Value2<\/ElementName2><\/ElementName1>""}");

        VerifyXElementObject(original.e1, actual.e1);
        VerifyXElementObject((XElement)original.e1.FirstNode, (XElement)actual.e1.FirstNode);
    }

    [Fact]
    public static void DCJS_WithArrayOfXElement()
    {
        var original = new WithArrayOfXElement(true);
        var actual = SerializeAndDeserialize<WithArrayOfXElement>(original, @"{""a"":[""<item xmlns=\""http:\/\/p.com\/\"">item0<\/item>"",""<item xmlns=\""http:\/\/p.com\/\"">item1<\/item>"",""<item xmlns=\""http:\/\/p.com\/\"">item2<\/item>""]}");

        Assert.StrictEqual(original.a.Length, actual.a.Length);
        VerifyXElementObject(original.a[0], actual.a[0], checkFirstAttribute: false);
        VerifyXElementObject(original.a[1], actual.a[1], checkFirstAttribute: false);
        VerifyXElementObject(original.a[2], actual.a[2], checkFirstAttribute: false);
    }

    [Fact]
    public static void DCJS_WithListOfXElement()
    {
        var original = new WithListOfXElement(true);
        var actual = SerializeAndDeserialize<WithListOfXElement>(original, @"{""list"":[""<item xmlns=\""http:\/\/p.com\/\"">item0<\/item>"",""<item xmlns=\""http:\/\/p.com\/\"">item1<\/item>"",""<item xmlns=\""http:\/\/p.com\/\"">item2<\/item>""]}");

        Assert.StrictEqual(original.list.Count, actual.list.Count);
        VerifyXElementObject(original.list[0], actual.list[0], checkFirstAttribute: false);
        VerifyXElementObject(original.list[1], actual.list[1], checkFirstAttribute: false);
        VerifyXElementObject(original.list[2], actual.list[2], checkFirstAttribute: false);
    }

    [Fact]
    public static void DCJS_TypeNamesWithSpecialCharacters()
    {
        var x = new __TypeNameWithSpecialCharacters\u6F22\u00F1() { PropertyNameWithSpecialCharacters\u6F22\u00F1 = "Test" };
        var y = SerializeAndDeserialize<__TypeNameWithSpecialCharacters\u6F22\u00F1>(x, "{\"PropertyNameWithSpecialCharacters\u6F22\u00F1\":\"Test\"}");

        Assert.Equal(x.PropertyNameWithSpecialCharacters\u6F22\u00F1, y.PropertyNameWithSpecialCharacters\u6F22\u00F1);
    }

    [Fact]
    public static void DCJS_JaggedArrayAsRoot()
    {
        int[][] jaggedIntegerArray = new int[][] { new int[] { 1, 3, 5, 7, 9 }, new int[] { 0, 2, 4, 6 }, new int[] { 11, 22 } };
        var actualJaggedIntegerArray = SerializeAndDeserialize<int[][]>(jaggedIntegerArray, "[[1,3,5,7,9],[0,2,4,6],[11,22]]");

        Assert.Equal(jaggedIntegerArray[0], actualJaggedIntegerArray[0]);
        Assert.Equal(jaggedIntegerArray[1], actualJaggedIntegerArray[1]);
        Assert.Equal(jaggedIntegerArray[2], actualJaggedIntegerArray[2]);


        string[][] jaggedStringArray = new string[][] { new string[] { "1", "3", "5", "7", "9" }, new string[] { "0", "2", "4", "6" }, new string[] { "11", "22" } };
        var actualJaggedStringArray = SerializeAndDeserialize<string[][]>(jaggedStringArray, @"[[""1"",""3"",""5"",""7"",""9""],[""0"",""2"",""4"",""6""],[""11"",""22""]]");

        Assert.Equal(jaggedStringArray[0], actualJaggedStringArray[0]);
        Assert.Equal(jaggedStringArray[1], actualJaggedStringArray[1]);
        Assert.Equal(jaggedStringArray[2], actualJaggedStringArray[2]);

        var offsetMinutes = (int)TimeZoneInfo.Local.GetUtcOffset(new DateTime(2013, 1, 2)).TotalMinutes;
        var timeZoneString = string.Format("{0:+;-}{1}", offsetMinutes, new TimeSpan(0, offsetMinutes, 0).ToString(@"hhmm"));
        object[] objectArray = new object[] { 1, 1.0F, 1.0, "string", Guid.Parse("2054fd3e-e118-476a-9962-1a882be51860"), new DateTime(2013, 1, 2).AddMinutes(offsetMinutes) };
        var actualObjectArray = SerializeAndDeserialize<object[]>(objectArray, string.Format(@"[1,1,1,""string"",""2054fd3e-e118-476a-9962-1a882be51860"",""\/Date(1357084800000{0})\/""]", timeZoneString));

        Assert.StrictEqual(1, actualObjectArray[0]);
        Assert.StrictEqual(1, actualObjectArray[1]);
        Assert.StrictEqual(1, actualObjectArray[2]);
        Assert.StrictEqual("string", actualObjectArray[3]);
        Assert.StrictEqual(Guid.Parse("2054fd3e-e118-476a-9962-1a882be51860"), Guid.Parse(actualObjectArray[4].ToString()));
        Assert.Equal(string.Format("/Date(1357084800000{0})/", timeZoneString), actualObjectArray[5].ToString());

        int[][][] jaggedIntegerArray2 = new int[][][] { new int[][] { new int[] { 1 }, new int[] { 3 } }, new int[][] { new int[] { 0 } }, new int[][] { new int[] { } } };
        var actualJaggedIntegerArray2 = SerializeAndDeserialize<int[][][]>(jaggedIntegerArray2, "[[[1],[3]],[[0]],[[]]]");

        Assert.True(actualJaggedIntegerArray2.Length == 3);
        Assert.True(actualJaggedIntegerArray2[0][0][0] == 1);
        Assert.True(actualJaggedIntegerArray2[0][1][0] == 3);
        Assert.True(actualJaggedIntegerArray2[1][0][0] == 0);
        Assert.True(actualJaggedIntegerArray2[2][0].Length == 0);
    }

    [Fact]
    public static void DCJS_EnumerableStruct()
    {
        var original = new EnumerableStruct();
        original.Add("a");
        original.Add("b");
        var actual = SerializeAndDeserialize<EnumerableStruct>(original, @"[""a"",""b""]");

        Assert.Equal((IEnumerable<string>)actual, (IEnumerable<string>)original);
    }

    [Fact]
    public static void DCJS_EnumerableCollection()
    {
        var dates = new DateTime[] { new DateTime(2000, 1, 1), new DateTime(2000, 1, 2), new DateTime(2000, 1, 3) };
        var original = new EnumerableCollection();
        var timeZoneStrings = new List<string>();
        foreach (var date in dates)
        {
            // DO NOT USE TimeZoneInfo.Local.BaseUtcOffset !
            var offsetMinutes = (int)TimeZoneInfo.Local.GetUtcOffset(date).TotalMinutes;
            original.Add(date.AddMinutes(offsetMinutes));
            timeZoneStrings.Add(string.Format("{0:+;-}{1}", offsetMinutes, new TimeSpan(0, offsetMinutes, 0).ToString(@"hhmm")));
        }
        var actual = SerializeAndDeserialize<EnumerableCollection>(original, string.Format(@"[""\/Date(946684800000{0})\/"",""\/Date(946771200000{0})\/"",""\/Date(946857600000{0})\/""]", timeZoneStrings.ToArray()));

        Assert.Equal((IEnumerable<DateTime>)actual, (IEnumerable<DateTime>)original);
    }

    [Fact]
    public static void DCJS_ContainsLinkedList()
    {
        var original = new ContainsLinkedList(true);
        var actual = SerializeAndDeserialize<ContainsLinkedList>(original, @"{""Data"":[{""Data"":{""Data"":""23:59:59""},""RefData"":{""Data"":""23:59:59""}},{""Data"":{""Data"":""23:59:59""},""RefData"":{""Data"":""23:59:59""}},{""Data"":{""Data"":""23:59:59""},""RefData"":{""Data"":""23:59:59""}},{""Data"":{""Data"":""23:59:59""},""RefData"":{""Data"":""23:59:59""}},{""Data"":{""Data"":""23:59:59""},""RefData"":{""Data"":""23:59:59""}},{""Data"":{""Data"":""23:59:59""},""RefData"":{""Data"":""23:59:59""}},{""Data"":{""Data"":""23:59:59""},""RefData"":{""Data"":""23:59:59""}}]}");

        var actualEnumerator = actual.Data.GetEnumerator();
        var originalEnumerator = original.Data.GetEnumerator();

        while (originalEnumerator.MoveNext() && actualEnumerator.MoveNext())
        {
            var orininalElement = originalEnumerator.Current;
            var actualElement = actualEnumerator.Current;

            Assert.Equal(orininalElement.Data.Data, actualElement.Data.Data);
            Assert.Equal(orininalElement.RefData.Data, actualElement.RefData.Data);
        }
    }

    [Fact]
    public static void DCJS_SimpleCollectionDataContract()
    {
        var original = new SimpleCDC(true);
        var actual = SerializeAndDeserialize<SimpleCDC>(original, @"[""One"",""Two"",""Three""]");

        Assert.Equal((IEnumerable<string>)actual, (IEnumerable<string>)original);
    }

    [Fact]
    public static void DCJS_EnumFlags()
    {
        EnumFlags original = EnumFlags.One | EnumFlags.Four;
        var actual = SerializeAndDeserialize<EnumFlags>(original, "9");
        Assert.StrictEqual(original, actual);
    }



    [Fact]
    public static void DCJS_Nullables()
    {
        // Arrange
        var baseline = @"{""Optional"":1,""OptionalInt"":42,""Optionull"":null,""OptionullInt"":null,""Struct1"":{""A"":1,""B"":2},""Struct2"":null}";
        var item = new WithNullables()
        {
            Optional = IntEnum.Option1,
            OptionalInt = 42,
            Struct1 = new SomeStruct { A = 1, B = 2 }
        };

        // Act
        var actual = SerializeAndDeserialize(item, baseline);

        // Assert
        Assert.StrictEqual(item.OptionalInt, actual.OptionalInt);
        Assert.StrictEqual(item.Optional, actual.Optional);
        Assert.StrictEqual(item.Optionull, actual.Optionull);
        Assert.StrictEqual(item.OptionullInt, actual.OptionullInt);
        Assert.Null(actual.Struct2);
        Assert.StrictEqual(item.Struct1.Value.A, actual.Struct1.Value.A);
        Assert.StrictEqual(item.Struct1.Value.B, actual.Struct1.Value.B);
    }

    [Fact]
    public static void DCJS_InternalTypeSerialization()
    {
        var value = new InternalType() { InternalProperty = 12 };
        var deserializedValue = SerializeAndDeserialize<InternalType>(value, @"{""InternalProperty"":12,""PrivateProperty"":100}");
        Assert.StrictEqual(deserializedValue.InternalProperty, value.InternalProperty);
        Assert.StrictEqual(deserializedValue.GetPrivatePropertyValue(), value.GetPrivatePropertyValue());
    }

    [Fact]
    public static void DCJS_PrivateTypeSerialization()
    {
        var value = new PrivateType();
        var deserializedValue = SerializeAndDeserialize<PrivateType>(value, @"{""InternalProperty"":1,""PrivateProperty"":2}");
        Assert.StrictEqual(deserializedValue.GetInternalPropertyValue(), value.GetInternalPropertyValue());
        Assert.StrictEqual(deserializedValue.GetPrivatePropertyValue(), value.GetPrivatePropertyValue());
    }

    [Fact]
    public static void DCJS_KnownTypesThroughConstructor()
    {
        //Constructor # 3
        var value = new KnownTypesThroughConstructor() { EnumValue = MyEnum.One, SimpleTypeValue = new SimpleKnownTypeValue() { StrProperty = "PropertyValue" } };
        var actual = SerializeAndDeserialize<KnownTypesThroughConstructor>(value,
        @"{""EnumValue"":0,""SimpleTypeValue"":{""__type"":""SimpleKnownTypeValue:#SerializationTypes"",""StrProperty"":""PropertyValue""}}",
        null, () => { return new DataContractJsonSerializer(typeof(KnownTypesThroughConstructor), new Type[] { typeof(MyEnum), typeof(SimpleKnownTypeValue) }); });

        Assert.StrictEqual((MyEnum)value.EnumValue, (MyEnum)actual.EnumValue);
        Assert.True(actual.SimpleTypeValue is SimpleKnownTypeValue);
        Assert.Equal("PropertyValue", ((SimpleKnownTypeValue)actual.SimpleTypeValue).StrProperty);
    }

#region private type has to be in with in the class
    [DataContract]
    private class PrivateType
    {
        public PrivateType()
        {
            InternalProperty = 1;
            PrivateProperty = 2;
        }

        [DataMember]
        internal int InternalProperty { get; set; }

        [DataMember]
        private int PrivateProperty { get; set; }

        public int GetInternalPropertyValue()
        {
            return InternalProperty;
        }

        public int GetPrivatePropertyValue()
        {
            return PrivateProperty;
        }
    }
#endregion

    [Fact]
    public static void DCJS_EmptyString_Throws()
    {
        Type type = typeof(string);
        DataContractJsonSerializer serializer = new DataContractJsonSerializer(type);
        string input = "";

        using (var ms = new MemoryStream())
        {
            using (var writer = new StreamWriter(ms))
            {
                writer.Write(input);
                writer.Flush();
                ms.Position = 0;

                Assert.Throws<SerializationException>(() =>
                {
                    serializer.ReadObject(ms);
                });
            }
        }
    }

    [Fact]
    [ActiveIssue("https://github.com/dotnet/runtime/issues/60462", TestPlatforms.iOS | TestPlatforms.tvOS)]
    public static void DCJS_ClassWithDatetimeOffsetTypeProperty()
    {
        var value = new TypeWithDateTimeOffsetTypeProperty() { ModifiedTime = new DateTimeOffset(new DateTime(2013, 1, 2, 3, 4, 5, 6, DateTimeKind.Utc)) };
        var actual = SerializeAndDeserialize(value, @"{""ModifiedTime"":{""DateTime"":""\/Date(1357095845006)\/"",""OffsetMinutes"":0}}");
        Assert.StrictEqual<DateTimeOffset>(value.ModifiedTime, actual.ModifiedTime);
    }


    [Fact]
    public static void DCJS_GenericTypeWithPrivateSetter()
    {
        var value = new GenericTypeWithPrivateSetter<string>("PropertyWithPrivateSetter's value");
        var actual = SerializeAndDeserialize(value, @"{""PropertyWithPrivateSetter"":""PropertyWithPrivateSetter's value""}");
        Assert.Equal(value.PropertyWithPrivateSetter, actual.PropertyWithPrivateSetter);
    }

    [Fact]
    public static void DCJS_TypeWithDateTimeStringProperty()
    {
        DataContractJsonSerializer dcjs = new DataContractJsonSerializer(typeof(TypeWithDateTimeStringProperty));
        var obj = new TypeWithDateTimeStringProperty()
        {
            DateTimeString = @"\/Date(1411072352108-0700)\/",
            CurrentDateTime = new DateTime(2015, 1, 1)
        };

        // Serialization-deserialization
        using (MemoryStream stream = new MemoryStream())
        {
            dcjs.WriteObject(stream, obj);
            stream.Position = 0;
            var serializedStr = new StreamReader(stream).ReadToEnd();

            stream.Position = 0;
            var obj2 = (TypeWithDateTimeStringProperty)dcjs.ReadObject(stream);
            Assert.Equal(obj.DateTimeString, obj2.DateTimeString);
            Assert.StrictEqual(obj.CurrentDateTime, obj2.CurrentDateTime);
        }

        // Deserialization only. The provided string of DateTimeString is in different format than the serialized string.
        // The serialized string is: {"DateTimeString":"\/Date(1411072352108-0700)\/"}
        using (MemoryStream ms = new MemoryStream())
        {
            StreamWriter sw = new StreamWriter(ms);
            sw.WriteLine(@"{""DateTimeString"":""\/Date(1411072352108-0700)\/""}");
            sw.Flush();
            ms.Seek(0, SeekOrigin.Begin);
            var result = (TypeWithDateTimeStringProperty)dcjs.ReadObject(ms);
            Assert.Equal(@"/Date(1411072352108-0700)/", result.DateTimeString);
        }
    }

    [Fact]
    public static void DCJS_TypeWithGenericDictionaryAsKnownType()
    {
        TypeWithGenericDictionaryAsKnownType value = new TypeWithGenericDictionaryAsKnownType { };
        value.Foo.Add(10, new Level() { Name = "Foo", LevelNo = 1 });
        value.Foo.Add(20, new Level() { Name = "Bar", LevelNo = 2 });
        var deserializedValue = SerializeAndDeserialize<TypeWithGenericDictionaryAsKnownType>(value, @"{""Foo"":[{""Key"":10,""Value"":{""LevelNo"":1,""Name"":""Foo""}},{""Key"":20,""Value"":{""LevelNo"":2,""Name"":""Bar""}}]}");

        Assert.StrictEqual(2, deserializedValue.Foo.Count);
        Assert.Equal("Foo", deserializedValue.Foo[10].Name);
        Assert.StrictEqual(1, deserializedValue.Foo[10].LevelNo);
        Assert.Equal("Bar", deserializedValue.Foo[20].Name);
        Assert.StrictEqual(2, deserializedValue.Foo[20].LevelNo);
    }

    [Fact]
    [ActiveIssue("https://github.com/dotnet/runtime/issues/60462", TestPlatforms.iOS | TestPlatforms.tvOS)]
    public static void DCJS_TypeWithKnownTypeAttributeAndInterfaceMember()
    {
        TypeWithKnownTypeAttributeAndInterfaceMember value = new TypeWithKnownTypeAttributeAndInterfaceMember();
        value.HeadLine = new NewsArticle() { Title = "Foo News" };
        var deserializedValue = SerializeAndDeserialize<TypeWithKnownTypeAttributeAndInterfaceMember>(value, @"{""HeadLine"":{""__type"":""NewsArticle:#SerializationTypes"",""Category"":""News"",""Title"":""Foo News""}}");

        Assert.Equal("News", deserializedValue.HeadLine.Category);
        Assert.Equal("Foo News", deserializedValue.HeadLine.Title);
    }

    [Fact]
    [ActiveIssue("https://github.com/dotnet/runtime/issues/60462", TestPlatforms.iOS | TestPlatforms.tvOS)]
    public static void DCJS_TypeWithKnownTypeAttributeAndListOfInterfaceMember()
    {
        TypeWithKnownTypeAttributeAndListOfInterfaceMember value = new TypeWithKnownTypeAttributeAndListOfInterfaceMember();
        value.Articles = new List<IArticle>() { new SummaryArticle() { Title = "Bar Summary" } };
        var deserializedValue = SerializeAndDeserialize<TypeWithKnownTypeAttributeAndListOfInterfaceMember>(value, @"{""Articles"":[{""__type"":""SummaryArticle:#SerializationTypes"",""Category"":""Summary"",""Title"":""Bar Summary""}]}");

        Assert.StrictEqual(1, deserializedValue.Articles.Count);
        Assert.Equal("Summary", deserializedValue.Articles[0].Category);
        Assert.Equal("Bar Summary", deserializedValue.Articles[0].Title);
    }

    [Fact]
    public static void DCJS_Tuple()
    {
        DCJS_Tuple1();
        DCJS_Tuple2();
        DCJS_Tuple3();
        DCJS_Tuple4();
        DCJS_Tuple5();
        DCJS_Tuple6();
        DCJS_Tuple7();
        DCJS_Tuple8();
    }

    private static void DCJS_Tuple1()
    {
        Tuple<int> value = new Tuple<int>(1);
        var deserializedValue = SerializeAndDeserialize<Tuple<int>>(value, @"{""m_Item1"":1}");
        Assert.StrictEqual<Tuple<int>>(value, deserializedValue);
    }

    private static void DCJS_Tuple2()
    {
        Tuple<int, int> value = new Tuple<int, int>(1, 2);
        var deserializedValue = SerializeAndDeserialize<Tuple<int, int>>(value, @"{""m_Item1"":1,""m_Item2"":2}");
        Assert.StrictEqual<Tuple<int, int>>(value, deserializedValue);
    }

    private static void DCJS_Tuple3()
    {
        Tuple<int, int, int> value = new Tuple<int, int, int>(1, 2, 3);
        var deserializedValue = SerializeAndDeserialize<Tuple<int, int, int>>(value, @"{""m_Item1"":1,""m_Item2"":2,""m_Item3"":3}");
        Assert.StrictEqual<Tuple<int, int, int>>(value, deserializedValue);
    }

    private static void DCJS_Tuple4()
    {
        Tuple<int, int, int, int> value = new Tuple<int, int, int, int>(1, 2, 3, 4);
        var deserializedValue = SerializeAndDeserialize<Tuple<int, int, int, int>>(value, @"{""m_Item1"":1,""m_Item2"":2,""m_Item3"":3,""m_Item4"":4}");
        Assert.StrictEqual<Tuple<int, int, int, int>>(value, deserializedValue);
    }

    private static void DCJS_Tuple5()
    {
        Tuple<int, int, int, int, int> value = new Tuple<int, int, int, int, int>(1, 2, 3, 4, 5);
        var deserializedValue = SerializeAndDeserialize<Tuple<int, int, int, int, int>>(value, @"{""m_Item1"":1,""m_Item2"":2,""m_Item3"":3,""m_Item4"":4,""m_Item5"":5}");
        Assert.StrictEqual<Tuple<int, int, int, int, int>>(value, deserializedValue);
    }

    private static void DCJS_Tuple6()
    {
        Tuple<int, int, int, int, int, int> value = new Tuple<int, int, int, int, int, int>(1, 2, 3, 4, 5, 6);
        var deserializedValue = SerializeAndDeserialize<Tuple<int, int, int, int, int, int>>(value, @"{""m_Item1"":1,""m_Item2"":2,""m_Item3"":3,""m_Item4"":4,""m_Item5"":5,""m_Item6"":6}");
        Assert.StrictEqual<Tuple<int, int, int, int, int, int>>(value, deserializedValue);
    }

    private static void DCJS_Tuple7()
    {
        Tuple<int, int, int, int, int, int, int> value = new Tuple<int, int, int, int, int, int, int>(1, 2, 3, 4, 5, 6, 7);
        var deserializedValue = SerializeAndDeserialize<Tuple<int, int, int, int, int, int, int>>(value, @"{""m_Item1"":1,""m_Item2"":2,""m_Item3"":3,""m_Item4"":4,""m_Item5"":5,""m_Item6"":6,""m_Item7"":7}");
        Assert.StrictEqual<Tuple<int, int, int, int, int, int, int>>(value, deserializedValue);
    }

    private static void DCJS_Tuple8()
    {
        Tuple<int, int, int, int, int, int, int, Tuple<int>> value = new Tuple<int, int, int, int, int, int, int, Tuple<int>>(1, 2, 3, 4, 5, 6, 7, new Tuple<int>(8));
        var deserializedValue = SerializeAndDeserialize<Tuple<int, int, int, int, int, int, int, Tuple<int>>>(value, @"{""m_Item1"":1,""m_Item2"":2,""m_Item3"":3,""m_Item4"":4,""m_Item5"":5,""m_Item6"":6,""m_Item7"":7,""m_Rest"":{""m_Item1"":8}}");
        Assert.StrictEqual<Tuple<int, int, int, int, int, int, int, Tuple<int>>>(value, deserializedValue);
    }

    [Fact]
    public static void DCJS_GenericQueue()
    {
        Queue<int> value = new Queue<int>();
        value.Enqueue(1);
        object syncRoot = ((ICollection)value).SyncRoot;
        var deserializedValue = SerializeAndDeserialize<Queue<int>>(value, @"{""_array"":[1,0,0,0],""_head"":0,""_size"":1,""_tail"":1,""_version"":2}");
        var a1 = value.ToArray();
        var a2 = deserializedValue.ToArray();
        Assert.StrictEqual(a1.Length, a2.Length);
        Assert.StrictEqual(a1[0], a2[0]);
    }

    [Fact]
    public static void DCJS_GenericStack()
    {
        var value = new Stack<int>();
        value.Push(123);
        value.Push(456);
        object syncRoot = ((ICollection)value).SyncRoot;
        var deserializedValue = SerializeAndDeserialize<Stack<int>>(value, @"{""_array"":[123,456,0,0],""_size"":2,""_version"":2}");
        var a1 = value.ToArray();
        var a2 = deserializedValue.ToArray();
        Assert.StrictEqual(a1.Length, a2.Length);
        Assert.StrictEqual(a1[0], a2[0]);
        Assert.StrictEqual(a1[1], a2[1]);
    }

    [Fact]
    public static void DCJS_Queue()
    {
        var value = new Queue();
        value.Enqueue(123);
        value.Enqueue("Foo");
        object syncRoot = ((ICollection)value).SyncRoot;
        var deserializedValue = SerializeAndDeserialize<Queue>(value, @"{""_array"":[123,""Foo"",null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null],""_growFactor"":200,""_head"":0,""_size"":2,""_tail"":2,""_version"":2}");
        var a1 = value.ToArray();
        var a2 = deserializedValue.ToArray();
        Assert.StrictEqual(a1.Length, a2.Length);
        Assert.StrictEqual(a1[0], a2[0]);
    }

    [Fact]
    public static void DCJS_Stack()
    {
        var value = new Stack();
        value.Push(123);
        value.Push("Foo");
        object syncRoot = ((ICollection)value).SyncRoot;
        var deserializedValue = SerializeAndDeserialize<Stack>(value, @"{""_array"":[123,""Foo"",null,null,null,null,null,null,null,null],""_size"":2,""_version"":2}");
        var a1 = value.ToArray();
        var a2 = deserializedValue.ToArray();
        Assert.StrictEqual(a1.Length, a2.Length);
        Assert.StrictEqual(a1[0], a2[0]);
        Assert.StrictEqual(a1[1], a2[1]);
    }

    [Fact]
    public static void DCJS_SortedList()
    {
        var value = new SortedList();
        value.Add(456, "Foo");
        value.Add(123, "Bar");
        var deserializedValue = SerializeAndDeserialize<SortedList>(value, @"[{""Key"":123,""Value"":""Bar""},{""Key"":456,""Value"":""Foo""}]");
        Assert.StrictEqual(value.Count, deserializedValue.Count);
        Assert.StrictEqual(value[0], deserializedValue[0]);
        Assert.StrictEqual(value[1], deserializedValue[1]);
    }

    [Fact]
    public static void DCJS_SystemVersion()
    {
        Version value = new Version(1, 2, 3, 4);
        var deserializedValue = SerializeAndDeserialize<Version>(value, @"{""_Build"":3,""_Major"":1,""_Minor"":2,""_Revision"":4}");
        Assert.StrictEqual(value.Major, deserializedValue.Major);
        Assert.StrictEqual(value.Minor, deserializedValue.Minor);
        Assert.StrictEqual(value.Build, deserializedValue.Build);
        Assert.StrictEqual(value.Revision, deserializedValue.Revision);
    }

    [Fact]
    public static void DCJS_ObjectArrayAsObject()
    {
        string jsonString = @"[""Foo"",123,""456""]";
        MemoryStream stream = new MemoryStream();
        StreamWriter sw = new StreamWriter(stream);
        sw.Write(jsonString);
        sw.Flush();
        stream.Seek(0, SeekOrigin.Begin);

        DataContractJsonSerializer dcjs = new DataContractJsonSerializer(typeof(object));
        var deserializedValue = (object[])dcjs.ReadObject(stream);
        Assert.StrictEqual(3, deserializedValue.Length);
        Assert.StrictEqual("Foo", deserializedValue[0]);
        Assert.StrictEqual(123, deserializedValue[1]);
        Assert.StrictEqual("456", deserializedValue[2]);
    }

    [Fact]
    public static void DCJS_GenericTypeWithNestedGenerics()
    {
        GenericTypeWithNestedGenerics<int>.InnerGeneric<double> value = new GenericTypeWithNestedGenerics<int>.InnerGeneric<double>()
        {
            data1 = 123,
            data2 = 4.56
        };
        var deserializedValue = SerializeAndDeserialize<GenericTypeWithNestedGenerics<int>.InnerGeneric<double>>(value, @"{""data1"":123,""data2"":4.56}");
        Assert.StrictEqual(value.data1, deserializedValue.data1);
        Assert.StrictEqual(value.data2, deserializedValue.data2);
    }

    [Fact]
    public static void DCJS_ClassImplementingIXmlSerialiable()
    {
        ClassImplementingIXmlSerialiable value = new ClassImplementingIXmlSerialiable() { StringValue = "Foo" };
        var deserializedValue = SerializeAndDeserialize<ClassImplementingIXmlSerialiable>(value, @"""<ClassImplementingIXmlSerialiable StringValue=\""Foo\"" BoolValue=\""True\"" xmlns=\""http:\/\/schemas.datacontract.org\/2004\/07\/SerializationTypes\""\/>""");
        Assert.Equal(value.StringValue, deserializedValue.StringValue);
    }

    [Fact]
    public static void DCJS_TypeWithNestedGenericClassImplementingIXmlSerialiable()
    {
        TypeWithNestedGenericClassImplementingIXmlSerialiable.NestedGenericClassImplementingIXmlSerialiable<bool> value = new TypeWithNestedGenericClassImplementingIXmlSerialiable.NestedGenericClassImplementingIXmlSerialiable<bool>() { StringValue = "Foo" };
        var deserializedValue = SerializeAndDeserialize<TypeWithNestedGenericClassImplementingIXmlSerialiable.NestedGenericClassImplementingIXmlSerialiable<bool>>(value, @"""<TypeWithNestedGenericClassImplementingIXmlSerialiable.NestedGenericClassImplementingIXmlSerialiableOfbooleanRvdAXEcW StringValue=\""Foo\"" xmlns=\""http:\/\/schemas.datacontract.org\/2004\/07\/SerializationTypes\""\/>""");
        Assert.Equal(value.StringValue, deserializedValue.StringValue);
    }

    [Fact]
    public static void DCJS_SerializationEvents()
    {
        var input = new MyType() { Value = "string value" };
        var output = SerializeAndDeserialize<MyType>(input, @"{""Value"":""string value""}");

        Assert.True(input.OnSerializingMethodInvoked, "input.OnSerializingMethodInvoked is false");
        Assert.True(input.OnSerializedMethodInvoked, "input.OnSerializedMethodInvoked is false");
        Assert.True(output.OnDeserializingMethodInvoked, "output.OnDeserializingMethodInvoked is false");
        Assert.True(output.OnDeserializedMethodInvoked, "output.OnDeserializedMethodInvoked is false");
    }

    [Fact]
    public static void DCJS_DeserializeEmptyString()
    {
        var serializer = new DataContractJsonSerializer(typeof(object));
        Assert.Throws<SerializationException>(() =>
        {
            serializer.ReadObject(new MemoryStream());
        });
    }

    [Fact]
    public static void DCJS_UseSimpleDictionaryFormat()
    {
        Dictionary<string, string> dict = new Dictionary<string, string>();
        dict.Add("key1", "value1");
        dict.Add("key2", "value2");
        var deserialized = SerializeAndDeserialize(dict, @"{""key1"":""value1"",""key2"":""value2""}",
            new DataContractJsonSerializerSettings { UseSimpleDictionaryFormat = true });
        Assert.StrictEqual(2, deserialized.Count);
        Assert.True(deserialized.ContainsKey("key1"));
        Assert.True(deserialized.ContainsKey("key2"));
        Assert.Equal(dict["key1"], deserialized["key1"]);
        Assert.Equal(dict["key2"], deserialized["key2"]);
    }

    [Fact]
    public static void DCJS_DeserializeTypeWithInnerInvalidDataContract()
    {
        DataContractJsonSerializer dcjs = new DataContractJsonSerializer(typeof(TypeWithPropertyWithoutDefaultCtor));
        string jsonString = @"{""Name"":""Foo""}";
        MemoryStream ms = new MemoryStream();
        StreamWriter sw = new StreamWriter(ms);
        sw.Write(jsonString);
        sw.Flush();
        ms.Seek(0, SeekOrigin.Begin);

        TypeWithPropertyWithoutDefaultCtor deserializedValue = (TypeWithPropertyWithoutDefaultCtor)dcjs.ReadObject(ms);
        Assert.Equal("Foo", deserializedValue.Name);
        Assert.Null(deserializedValue.MemberWithInvalidDataContract);
    }

    [Fact]
    public static void DCJS_ReadOnlyCollection()
    {
        List<string> list = new List<string>() { "Foo", "Bar" };
        ReadOnlyCollection<string> value = new ReadOnlyCollection<string>(list);
        var deserializedValue = SerializeAndDeserialize<ReadOnlyCollection<string>>(value, @"{""list"":[""Foo"",""Bar""]}");
        Assert.StrictEqual(value.Count, deserializedValue.Count);
        Assert.Equal(value[0], deserializedValue[0]);
        Assert.Equal(value[1], deserializedValue[1]);
    }

    [Fact]
    public static void DCJS_ReadOnlyDictionary()
    {
        var dict = new Dictionary<string, int>();
        dict["Foo"] = 1;
        dict["Bar"] = 2;
        ReadOnlyDictionary<string, int> value = new ReadOnlyDictionary<string, int>(dict);
        var deserializedValue = SerializeAndDeserialize(value, @"{""m_dictionary"":[{""Key"":""Foo"",""Value"":1},{""Key"":""Bar"",""Value"":2}]}");

        Assert.StrictEqual(value.Count, deserializedValue.Count);
        Assert.StrictEqual(value["Foo"], deserializedValue["Foo"]);
        Assert.StrictEqual(value["Bar"], deserializedValue["Bar"]);
    }

    [Fact]
    public static void DCJS_KeyValuePair()
    {
        var value = new KeyValuePair<string, object>("FooKey", "FooValue");
        var deserializedValue = SerializeAndDeserialize<KeyValuePair<string, object>>(value, @"{""key"":""FooKey"",""value"":""FooValue""}");

        Assert.Equal(value.Key, deserializedValue.Key);
        Assert.StrictEqual(value.Value, deserializedValue.Value);
    }

    [Fact]
    public static void DCJS_DataContractWithDotInName()
    {
        DataContractWithDotInName value = new DataContractWithDotInName() { Name = "Foo" };
        var deserializedValue = SerializeAndDeserialize<DataContractWithDotInName>(value, @"{""Name"":""Foo""}");

        Assert.NotNull(deserializedValue);
        Assert.Equal(value.Name, deserializedValue.Name);
    }

    [Fact]
    public static void DCJS_DataContractWithMinusSignInName()
    {
        DataContractWithMinusSignInName value = new DataContractWithMinusSignInName() { Name = "Foo" };
        var deserializedValue = SerializeAndDeserialize<DataContractWithMinusSignInName>(value, @"{""Name"":""Foo""}");

        Assert.NotNull(deserializedValue);
        Assert.Equal(value.Name, deserializedValue.Name);
    }

    [Fact]
    public static void DCJS_DataContractWithOperatorsInName()
    {
        DataContractWithOperatorsInName value = new DataContractWithOperatorsInName() { Name = "Foo" };
        var deserializedValue = SerializeAndDeserialize<DataContractWithOperatorsInName>(value, @"{""Name"":""Foo""}");

        Assert.NotNull(deserializedValue);
        Assert.Equal(value.Name, deserializedValue.Name);
    }

    [Fact]
    public static void DCJS_DataContractWithOtherSymbolsInName()
    {
        DataContractWithOtherSymbolsInName value = new DataContractWithOtherSymbolsInName() { Name = "Foo" };
        var deserializedValue = SerializeAndDeserialize<DataContractWithOtherSymbolsInName>(value, @"{""Name"":""Foo""}");

        Assert.NotNull(deserializedValue);
        Assert.Equal(value.Name, deserializedValue.Name);
    }

    [Fact]
    public static void DCJS_CollectionDataContractWithCustomKeyName()
    {
        CollectionDataContractWithCustomKeyName value = new CollectionDataContractWithCustomKeyName();
        value.Add(100, 123);
        value.Add(200, 456);
        var deserializedValue = SerializeAndDeserialize<CollectionDataContractWithCustomKeyName>(value, @"[{""Key"":100,""Value"":123},{""Key"":200,""Value"":456}]");

        Assert.NotNull(deserializedValue);
        Assert.StrictEqual(value[100], deserializedValue[100]);
        Assert.StrictEqual(value[200], deserializedValue[200]);
    }

    [Fact]
    public static void DCJS_CollectionDataContractWithCustomKeyNameDuplicate()
    {
        CollectionDataContractWithCustomKeyNameDuplicate value = new CollectionDataContractWithCustomKeyNameDuplicate();
        value.Add(100, 123);
        value.Add(200, 456);
        var deserializedValue = SerializeAndDeserialize<CollectionDataContractWithCustomKeyNameDuplicate>(value, @"[{""Key"":100,""Value"":123},{""Key"":200,""Value"":456}]");

        Assert.NotNull(deserializedValue);
        Assert.StrictEqual(value[100], deserializedValue[100]);
        Assert.StrictEqual(value[200], deserializedValue[200]);
    }

    [Fact]
    public static void DCJS_TypeWithCollectionWithoutDefaultConstructor()
    {
        TypeWithCollectionWithoutDefaultConstructor value = new TypeWithCollectionWithoutDefaultConstructor();
        value.CollectionProperty.Add("Foo");
        value.CollectionProperty.Add("Bar");
        var deserializedValue = SerializeAndDeserialize<TypeWithCollectionWithoutDefaultConstructor>(value, @"{""CollectionProperty"":[""Foo"",""Bar""]}");

        Assert.NotNull(deserializedValue);
        Assert.NotNull(deserializedValue.CollectionProperty);
        Assert.StrictEqual(value.CollectionProperty.Count, deserializedValue.CollectionProperty.Count);
        Assert.True(Enumerable.SequenceEqual(value.CollectionProperty, deserializedValue.CollectionProperty));
    }

    [Fact]
    public static void DCJS_DataMemberNames()
    {
        var obj = new AppEnvironment()
        {
            ScreenDpi = 440,
            ScreenOrientation = "horizontal"
        };
        var actual = SerializeAndDeserialize(obj, @"{""screen_dpi(x:y)"":440,""screen:orientation"":""horizontal""}");
        Assert.StrictEqual(obj.ScreenDpi, actual.ScreenDpi);
        Assert.Equal(obj.ScreenOrientation, actual.ScreenOrientation);
    }

    [Fact]
    public static void DCJS_CollectionInterfaceGetOnlyCollection()
    {
        var obj = new TypeWithCollectionInterfaceGetOnlyCollection(new List<string>() { "item1", "item2", "item3" });
        var deserializedObj = SerializeAndDeserialize(obj, @"{""Items"":[""item1"",""item2"",""item3""]}");
        Assert.Equal(obj.Items, deserializedObj.Items);
    }

    [Fact]
    public static void DCJS_EnumerableInterfaceGetOnlyCollection()
    {
        // Expect exception in deserialization process
        Assert.Throws<InvalidDataContractException>(() => {
            var obj = new TypeWithEnumerableInterfaceGetOnlyCollection(new List<string>() { "item1", "item2", "item3" });
            SerializeAndDeserialize(obj, @"{""Items"":[""item1"",""item2"",""item3""]}");
        });
    }

    [Fact]
    public static void DCJS_XmlElementAsRoot()
    {
        XmlDocument xDoc = new XmlDocument();
        xDoc.LoadXml(@"<html></html>");
        XmlElement expected = xDoc.CreateElement("Element");
        expected.InnerText = "Element innertext";
        var actual = SerializeAndDeserialize(expected, @"""<Element>Element innertext<\/Element>""");
        Assert.NotNull(actual);
        Assert.Equal(expected.InnerText, actual.InnerText);
    }

    [Fact]
    public static void DCJS_TypeWithXmlElementProperty()
    {
        XmlDocument xDoc = new XmlDocument();
        xDoc.LoadXml(@"<html></html>");
        XmlElement productElement = xDoc.CreateElement("Product");
        productElement.InnerText = "Product innertext";
        XmlElement categoryElement = xDoc.CreateElement("Category");
        categoryElement.InnerText = "Category innertext";
        var expected = new TypeWithXmlElementProperty() { Elements = new[] { productElement, categoryElement } };
        var actual = SerializeAndDeserialize(expected, @"{""Elements"":[""<Product>Product innertext<\/Product>"",""<Category>Category innertext<\/Category>""]}");
        Assert.StrictEqual(expected.Elements.Length, actual.Elements.Length);
        for (int i = 0; i < expected.Elements.Length; ++i)
        {
            Assert.Equal(expected.Elements[i].InnerText, actual.Elements[i].InnerText);
        }
    }

    [Fact]
    public static void DCJS_RecursiveCollection()
    {
        Assert.Throws<InvalidDataContractException>(() =>
        {
            (new DataContractJsonSerializer(typeof(RecursiveCollection))).WriteObject(new MemoryStream(), new RecursiveCollection());
        });
    }

    [Fact]
    public static void DCJS_TypeWithInternalDefaultConstructor()
    {
        var value = TypeWithInternalDefaultConstructor.CreateInstance();

        value.Name = "foo";
        var actual = SerializeAndDeserialize(value, "{\"Name\":\"foo\"}");

        Assert.NotNull(actual);
        Assert.Equal(value.Name, actual.Name);
    }

    [Fact]
    public static void DCJS_TypeWithInternalDefaultConstructorWithoutDataContractAttribute()
    {
        var value = TypeWithInternalDefaultConstructorWithoutDataContractAttribute.CreateInstance();

        value.Name = "foo";
        var actual = SerializeAndDeserialize(value, "{\"Name\":\"foo\"}");

        Assert.NotNull(actual);
        Assert.Equal(value.Name, actual.Name);
    }

    [Fact]
    public static void DCJS_TypeWithPrimitiveProperties()
    {
        TypeWithPrimitiveProperties x = new TypeWithPrimitiveProperties { P1 = "abc", P2 = 11 };
        TypeWithPrimitiveProperties y = SerializeAndDeserialize<TypeWithPrimitiveProperties>(x, "{\"P1\":\"abc\",\"P2\":11}");
        Assert.Equal(x.P1, y.P1);
        Assert.StrictEqual(x.P2, y.P2);
    }

    [Fact]
    public static void DCJS_TypeWithPrimitiveFields()
    {
        TypeWithPrimitiveFields x = new TypeWithPrimitiveFields { P1 = "abc", P2 = 11 };
        TypeWithPrimitiveFields y = SerializeAndDeserialize<TypeWithPrimitiveFields>(x, "{\"P1\":\"abc\",\"P2\":11}");
        Assert.Equal(x.P1, y.P1);
        Assert.StrictEqual(x.P2, y.P2);
    }

    [Fact]
    public static void DCJS_TypeWithAllPrimitiveProperties()
    {
        TypeWithAllPrimitiveProperties x = new TypeWithAllPrimitiveProperties
        {
            BooleanMember = true,
            //ByteArrayMember = new byte[] { 1, 2, 3, 4 },
            CharMember = 'C',
            DateTimeMember = new DateTime(2016, 7, 8, 9, 10, 11, DateTimeKind.Utc),
            DecimalMember = new decimal(123, 456, 789, true, 0),
            DoubleMember = 123.456,
            FloatMember = 456.789f,
            GuidMember = Guid.Parse("2054fd3e-e118-476a-9962-1a882be51860"),
            //public byte[] HexBinaryMember
            StringMember = "abc",
            IntMember = 123
        };
        TypeWithAllPrimitiveProperties y = SerializeAndDeserialize<TypeWithAllPrimitiveProperties>(x, "{\"BooleanMember\":true,\"CharMember\":\"C\",\"DateTimeMember\":\"\\/Date(1467969011000)\\/\",\"DecimalMember\":-14554481076115341312123,\"DoubleMember\":123.456,\"FloatMember\":456.789,\"GuidMember\":\"2054fd3e-e118-476a-9962-1a882be51860\",\"IntMember\":123,\"StringMember\":\"abc\"}");
        Assert.StrictEqual(x.BooleanMember, y.BooleanMember);
        //Assert.StrictEqual(x.ByteArrayMember, y.ByteArrayMember);
        Assert.StrictEqual(x.CharMember, y.CharMember);
        Assert.StrictEqual(x.DateTimeMember, y.DateTimeMember);
        Assert.StrictEqual(x.DecimalMember, y.DecimalMember);
        Assert.StrictEqual(x.DoubleMember, y.DoubleMember);
        Assert.StrictEqual(x.FloatMember, y.FloatMember);
        Assert.StrictEqual(x.GuidMember, y.GuidMember);
        Assert.Equal(x.StringMember, y.StringMember);
        Assert.StrictEqual(x.IntMember, y.IntMember);
    }

#region Array of primitive types

    [Fact]
    public static void DCJS_ArrayOfBoolean()
    {
        var value = new bool[] { true, false, true };
        var deserialized = SerializeAndDeserialize(value, "[true,false,true]");
        Assert.StrictEqual(value.Length, deserialized.Length);
        Assert.True(Enumerable.SequenceEqual(value, deserialized));
    }

    [Fact]
    public static void DCJS_ArrayOfDateTime()
    {
        var value = new DateTime[] { new DateTime(2000, 1, 2, 3, 4, 5, DateTimeKind.Utc), new DateTime(2011, 2, 3, 4, 5, 6, DateTimeKind.Utc) };
        var deserialized = SerializeAndDeserialize(value, "[\"\\/Date(946782245000)\\/\",\"\\/Date(1296705906000)\\/\"]");
        Assert.StrictEqual(value.Length, deserialized.Length);
        Assert.True(Enumerable.SequenceEqual(value, deserialized));
    }

    [Fact]
    public static void DCJS_ArrayOfDecimal()
    {
        var value = new decimal[] { new decimal(1, 2, 3, false, 1), new decimal(4, 5, 6, true, 2) };
        var deserialized = SerializeAndDeserialize(value, "[5534023222971858944.1,-1106804644637321461.80]");
        Assert.StrictEqual(value.Length, deserialized.Length);
        Assert.True(Enumerable.SequenceEqual(value, deserialized));
    }

    [Fact]
    public static void DCJS_ArrayOfInt32()
    {
        var value = new int[] { 123, int.MaxValue, int.MinValue };
        var deserialized = SerializeAndDeserialize(value, "[123,2147483647,-2147483648]");
        Assert.StrictEqual(value.Length, deserialized.Length);
        Assert.True(Enumerable.SequenceEqual(value, deserialized));
    }

    [Fact]
    public static void DCJS_ArrayOfInt64()
    {
        var value = new long[] { 123, long.MaxValue, long.MinValue };
        var deserialized = SerializeAndDeserialize(value, "[123,9223372036854775807,-9223372036854775808]");
        Assert.StrictEqual(value.Length, deserialized.Length);
        Assert.True(Enumerable.SequenceEqual(value, deserialized));
    }

    [Fact]
    public static void DCJS_ArrayOfSingle()
    {
        var value = new float[] { 1.23f, 4.56f, 7.89f };
        var deserialized = SerializeAndDeserialize(value, "[1.23,4.56,7.89]");
        Assert.StrictEqual(value.Length, deserialized.Length);
        Assert.True(Enumerable.SequenceEqual(value, deserialized));
    }

    [Fact]
    public static void DCJS_ArrayOfDouble()
    {
        var value = new double[] { 1.23, 4.56, 7.89 };
        var deserialized = SerializeAndDeserialize(value, "[1.23,4.56,7.89]");
        Assert.StrictEqual(value.Length, deserialized.Length);
        Assert.True(Enumerable.SequenceEqual(value, deserialized));
    }

    [Fact]
    public static void DCJS_ArrayOfString()
    {
        var value = new string[] { "abc", "def", "xyz" };
        var deserialized = SerializeAndDeserialize(value, "[\"abc\",\"def\",\"xyz\"]");
        Assert.StrictEqual(value.Length, deserialized.Length);
        Assert.True(Enumerable.SequenceEqual(value, deserialized));
    }

    [Fact]
    public static void DCJS_ArrayOfTypeWithPrimitiveProperties()
    {
        var value = new TypeWithPrimitiveProperties[]
        {
            new TypeWithPrimitiveProperties() { P1 = "abc" , P2 = 123 },
            new TypeWithPrimitiveProperties() { P1 = "def" , P2 = 456 },
        };
        var deserialized = SerializeAndDeserialize(value, "[{\"P1\":\"abc\",\"P2\":123},{\"P1\":\"def\",\"P2\":456}]");
        Assert.StrictEqual(value.Length, deserialized.Length);
        Assert.True(Enumerable.SequenceEqual(value, deserialized));
    }

#endregion

#region Collection

    [Fact]
    public static void DCJS_GenericICollectionOfBoolean()
    {
        var value = new TypeImplementsGenericICollection<bool>() { true, false, true };
        var deserialized = SerializeAndDeserialize(value, "[true,false,true]");
        Assert.StrictEqual(value.Count, deserialized.Count);
        Assert.True(Enumerable.SequenceEqual(value, deserialized));
    }

    [Fact]
    public static void DCJS_GenericICollectionOfDecimal()
    {
        var value = new TypeImplementsGenericICollection<decimal>() { new decimal(1, 2, 3, false, 1), new decimal(4, 5, 6, true, 2) };
        var deserialized = SerializeAndDeserialize(value, "[5534023222971858944.1,-1106804644637321461.80]");
        Assert.StrictEqual(value.Count, deserialized.Count);
        Assert.True(Enumerable.SequenceEqual(value, deserialized));
    }

    [Fact]
    public static void DCJS_GenericICollectionOfInt32()
    {
        TypeImplementsGenericICollection<int> x = new TypeImplementsGenericICollection<int>(123, int.MaxValue, int.MinValue);
        TypeImplementsGenericICollection<int> y = SerializeAndDeserialize(x, "[123,2147483647,-2147483648]");

        Assert.NotNull(y);
        Assert.StrictEqual(x.Count, y.Count);
        Assert.True(x.SequenceEqual(y));
    }

    [Fact]
    public static void DCJS_GenericICollectionOfInt64()
    {
        var value = new TypeImplementsGenericICollection<long>() { 123, long.MaxValue, long.MinValue };
        var deserialized = SerializeAndDeserialize(value, "[123,9223372036854775807,-9223372036854775808]");
        Assert.StrictEqual(value.Count, deserialized.Count);
        Assert.True(Enumerable.SequenceEqual(value, deserialized));
    }

    [Fact]
    public static void DCJS_GenericICollectionOfSingle()
    {
        var value = new TypeImplementsGenericICollection<float>() { 1.23f, 4.56f, 7.89f };
        var deserialized = SerializeAndDeserialize(value, "[1.23,4.56,7.89]");
        Assert.StrictEqual(value.Count, deserialized.Count);
        Assert.True(Enumerable.SequenceEqual(value, deserialized));
    }

    [Fact]
    public static void DCJS_GenericICollectionOfDouble()
    {
        var value = new TypeImplementsGenericICollection<double>() { 1.23, 4.56, 7.89 };
        var deserialized = SerializeAndDeserialize(value, "[1.23,4.56,7.89]");
        Assert.StrictEqual(value.Count, deserialized.Count);
        Assert.True(Enumerable.SequenceEqual(value, deserialized));
    }

    [Fact]
    public static void DCJS_GenericICollectionOfString()
    {
        TypeImplementsGenericICollection<string> value = new TypeImplementsGenericICollection<string>("a1", "a2");
        TypeImplementsGenericICollection<string> deserialized = SerializeAndDeserialize(value, "[\"a1\",\"a2\"]");

        Assert.NotNull(deserialized);
        Assert.StrictEqual(value.Count, deserialized.Count);
        Assert.True(value.SequenceEqual(deserialized));
    }

    [Fact]
    public static void DCJS_GenericICollectionOfTypeWithPrimitiveProperties()
    {
        var value = new TypeImplementsGenericICollection<TypeWithPrimitiveProperties>()
        {
            new TypeWithPrimitiveProperties() { P1 = "abc" , P2 = 123 },
            new TypeWithPrimitiveProperties() { P1 = "def" , P2 = 456 },
        };
        var deserialized = SerializeAndDeserialize(value, "[{\"P1\":\"abc\",\"P2\":123},{\"P1\":\"def\",\"P2\":456}]");
        Assert.StrictEqual(value.Count, deserialized.Count);
        Assert.True(Enumerable.SequenceEqual(value, deserialized));
    }

#endregion

#region Generic Dictionary

    [Fact]
    public static void DCJS_GenericDictionaryOfInt32Boolean()
    {
        var value = new Dictionary<int, bool>();
        value.Add(123, true);
        value.Add(456, false);
        var deserialized = SerializeAndDeserialize(value, "[{\"Key\":123,\"Value\":true},{\"Key\":456,\"Value\":false}]");
        Assert.StrictEqual(value.Count, deserialized.Count);
        Assert.True(Enumerable.SequenceEqual(value.ToArray(), deserialized.ToArray()));
    }

    [Fact]
    public static void DCJS_GenericDictionaryOfInt32String()
    {
        var value = new Dictionary<int, string>();
        value.Add(123, "abc");
        value.Add(456, "def");
        var deserialized = SerializeAndDeserialize(value, "[{\"Key\":123,\"Value\":\"abc\"},{\"Key\":456,\"Value\":\"def\"}]");
        Assert.StrictEqual(value.Count, deserialized.Count);
        Assert.True(Enumerable.SequenceEqual(value.ToArray(), deserialized.ToArray()));
    }

    [Fact]
    public static void DCJS_GenericDictionaryOfStringInt32()
    {
        var value = new Dictionary<string, int>();
        value.Add("abc", 123);
        value.Add("def", 456);
        var deserialized = SerializeAndDeserialize(value, "[{\"Key\":\"abc\",\"Value\":123},{\"Key\":\"def\",\"Value\":456}]");
        Assert.StrictEqual(value.Count, deserialized.Count);
        Assert.True(Enumerable.SequenceEqual(value.ToArray(), deserialized.ToArray()));
    }

#endregion

#region Non-Generic Dictionary

    [Fact]
    public static void DCJS_NonGenericDictionaryOfInt32Boolean()
    {
        var value = new MyNonGenericDictionary();
        value.Add(123, true);
        value.Add(456, false);
        var deserialized = SerializeAndDeserialize(value, "[{\"Key\":123,\"Value\":true},{\"Key\":456,\"Value\":false}]");
        Assert.StrictEqual(value.Count, deserialized.Count);
        Assert.True(Enumerable.SequenceEqual(value.Keys.Cast<int>().ToArray(), deserialized.Keys.Cast<int>().ToArray()));
        Assert.True(Enumerable.SequenceEqual(value.Values.Cast<bool>().ToArray(), deserialized.Values.Cast<bool>().ToArray()));
    }

    [Fact]
    public static void DCJS_NonGenericDictionaryOfInt32String()
    {
        var value = new MyNonGenericDictionary();
        value.Add(123, "abc");
        value.Add(456, "def");
        var deserialized = SerializeAndDeserialize(value, "[{\"Key\":123,\"Value\":\"abc\"},{\"Key\":456,\"Value\":\"def\"}]");
        Assert.StrictEqual(value.Count, deserialized.Count);
        Assert.True(Enumerable.SequenceEqual(value.Keys.Cast<int>().ToArray(), deserialized.Keys.Cast<int>().ToArray()));
        Assert.True(Enumerable.SequenceEqual(value.Values.Cast<string>().ToArray(), deserialized.Values.Cast<string>().ToArray()));
    }

    [Fact]
    public static void DCJS_NonGenericDictionaryOfStringInt32()
    {
        var value = new MyNonGenericDictionary();
        value.Add("abc", 123);
        value.Add("def", 456);
        var deserialized = SerializeAndDeserialize(value, "[{\"Key\":\"abc\",\"Value\":123},{\"Key\":\"def\",\"Value\":456}]");
        Assert.StrictEqual(value.Count, deserialized.Count);
        Assert.True(Enumerable.SequenceEqual(value.Keys.Cast<string>().ToArray(), deserialized.Keys.Cast<string>().ToArray()));
        Assert.True(Enumerable.SequenceEqual(value.Values.Cast<int>().ToArray(), deserialized.Values.Cast<int>().ToArray()));
    }

    [Fact]
    public static void DCJS_TypeWithEmitDefaultValueFalse()
    {
        var value = new TypeWithEmitDefaultValueFalse();

        var actual = SerializeAndDeserialize(value, "{}");

        Assert.NotNull(actual);
        Assert.Equal(value.Name, actual.Name);
        Assert.Equal(value.ID, actual.ID);
    }

#endregion

    [Fact]
    public static void DCJS_CreateJsonReaderTest()
    {
        const string json = @"{
                                ""Toy"":""Car"",
                                ""School"": {
                                ""Student"":""Mike""
                                }
                                }";
        byte[] bytes = Encoding.ASCII.GetBytes(json);
        using (var stream = new MemoryStream(bytes))
        {
            var quotas = new XmlDictionaryReaderQuotas();
            var jsonReader = JsonReaderWriterFactory.CreateJsonReader(stream, quotas);
            var xml = XDocument.Load(jsonReader);
            string expected = "<root type=\"object\">\r\n  <Toy type=\"string\">Car</Toy>\r\n  <School type=\"object\">\r\n    <Student type=\"string\">Mike</Student>\r\n  </School>\r\n</root>";
            Utils.CompareResult result = Utils.Compare(expected, xml.ToString());
            Assert.True(result.Equal);
        }
    }

    [Fact]
    public static void DCJS_CreateJsonWriterTest()
    {
        using (var mo = new MemoryStream())
        {
            var p = new Person1();
            p.Name = "David";
            p.Age = 15;
            XmlDictionaryWriter writer = JsonReaderWriterFactory.CreateJsonWriter(mo, Encoding.UTF8);
            var serializer = new DataContractJsonSerializer(typeof(Person1));
            var sr = new StreamReader(mo);
            serializer.WriteObject(writer, p);
            writer.Flush();
            mo.Position = 0;
            var output = sr.ReadToEnd();
            string expected = "{\"Age\":15,\"Name\":\"David\"}";
            Utils.CompareResult result = Utils.Compare(expected, output);
            Assert.True(result.Equal);
        }
    }

    [Fact]
    public static void DCJS_MyISerializableType()
    {
        var value = new MyISerializableType();
        value.StringValue = "test string";

        var actual = SerializeAndDeserialize(value, "{\"_stringValue\":\"test string\"}");

        Assert.NotNull(actual);
        Assert.Equal(value.StringValue, actual.StringValue);
    }

    [Fact]
    public static void DCJS_ConstructorWithRootName()
    {
        var value = new TypeForRootNameTest() { StringProperty = "Test String" };
        var serializer = new DataContractJsonSerializer(typeof(TypeForRootNameTest), typeof(TypeForRootNameTest).Name);
        string actualString = ConstructorWithRootNameTestHelper(value, serializer);
        string expectedString = "{\"TypeForRootNameTest\":{\"StringProperty\":\"Test String\"}}";
        Utils.CompareResult result = Utils.Compare(expectedString, actualString, false);
        Assert.True(result.Equal, $"The serialization payload was not as expected.{Environment.NewLine}Expected: {expectedString}.{Environment.NewLine}Actual: {actualString}");
    }


    [Fact]
    public static void DCJS_ConstructorWithRootNameAsXmlDictionaryString()
    {
        var value = new TypeForRootNameTest() { StringProperty = "Test String" };
        XmlDictionary dict = new XmlDictionary();
        XmlDictionaryString rootName = dict.Add(typeof(TypeForRootNameTest).Name);
        var serializer = new DataContractJsonSerializer(typeof(TypeForRootNameTest), rootName);
        string actualString = ConstructorWithRootNameTestHelper(value, serializer);
        string expectedString = "{\"TypeForRootNameTest\":{\"StringProperty\":\"Test String\"}}";
        Utils.CompareResult result = Utils.Compare(expectedString, actualString, false);
        Assert.True(result.Equal, $"The serialization payload was not as expected.{Environment.NewLine}Expected: {expectedString}.{Environment.NewLine}Actual: {actualString}");
    }

    [Fact]
    public static void DCJS_ExtensionDataObjectTest()
    {
        var p2 = new PersonV2();
        p2.Name = "Elizabeth";
        p2.ID = 2006;

        // Serialize the PersonV2 object
        var ser = new DataContractJsonSerializer(typeof(PersonV2));
        var ms1 = new MemoryStream();
        ser.WriteObject(ms1, p2);

        // Verify the payload
        ms1.Position = 0;
        string actualOutput1 = new StreamReader(ms1).ReadToEnd();
        string baseline1 = "{\"Name\":\"Elizabeth\",\"ID\":2006}";

        try
        {
            Utils.CompareResult result = Utils.Compare(baseline1, actualOutput1);
            Assert.True(result.Equal, $"{nameof(actualOutput1)} was not as expected: {Environment.NewLine}Expected: {baseline1}{Environment.NewLine}Actual: {actualOutput1}");
        }
        catch (Exception e)
        {
            Assert.True(false, $"Error occurred when comparing results: {Environment.NewLine}{e.Message}{Environment.NewLine}Expected: {baseline1}{Environment.NewLine}Actual: {actualOutput1}");
        }


        // Deserialize the payload into a Person instance.
        ms1.Position = 0;
        var ser2 = new DataContractJsonSerializer(typeof(Person));
        var p1 = (Person)ser2.ReadObject(ms1);

        Assert.True(p1 != null, $"Variable {nameof(p1)} was null.");
        Assert.True(p1.ExtensionData != null, $"{nameof(p1.ExtensionData)} was null.");
        Assert.Equal(p2.Name, p1.Name);

        // Serialize the Person instance
        var ms2 = new MemoryStream();
        ser2.WriteObject(ms2, p1);

        // Verify the payload
        ms2.Position = 0;
        string actualOutput2 = new StreamReader(ms2).ReadToEnd();
        string baseline2 = "{\"Name\":\"Elizabeth\",\"ID\":2006}";

        try
        {
            Utils.CompareResult result2 = Utils.Compare(baseline2, actualOutput2);
            Assert.True(result2.Equal, $"{nameof(actualOutput2)} was not as expected: {Environment.NewLine}Expected: {baseline2}{Environment.NewLine}Actual: {actualOutput2}");
        }
        catch (Exception e)
        {
            Assert.True(false, $"Error occurred when comparing results: {Environment.NewLine}{e.Message}{Environment.NewLine}Expected: {baseline2}{Environment.NewLine}Actual: {actualOutput2}");
        }
    }

    [Fact]
    public static void DCJS_ExtensionDataObjectTest2()
    {
        SerializeThenDeserialize(new ContractExtended { Item = new Item { Id = 1, Code = 2 } });
        SerializeThenDeserialize(new ContractExtended { Item = new Item { Id = 1 } });
    }

    private static void SerializeThenDeserialize(ContractExtended extendedData)
    {
        string extendedContractJson;
        using (var memoryStream = new MemoryStream())
        {
            new DataContractJsonSerializer(typeof(ContractExtended)).WriteObject(memoryStream, extendedData);
            extendedContractJson = Encoding.UTF8.GetString(memoryStream.ToArray());
        }

        ContractGeneric reducedData;
        using (var memoryStream = new MemoryStream(Encoding.UTF8.GetBytes(extendedContractJson)))
        {
            reducedData = (ContractGeneric)new DataContractJsonSerializer(typeof(ContractGeneric)).ReadObject(memoryStream);
        }

        string reducedContractJson;
        using (var memoryStream = new MemoryStream())
        {
            new DataContractJsonSerializer(typeof(ContractGeneric)).WriteObject(memoryStream, reducedData);
            reducedContractJson = Encoding.UTF8.GetString(memoryStream.ToArray());
        }

        Assert.Equal(extendedContractJson, reducedContractJson);
    }

    private static string ConstructorWithRootNameTestHelper(TypeForRootNameTest value, DataContractJsonSerializer serializer)
    {
        using (var ms = new MemoryStream())
        {
            XmlDictionaryWriter w = JsonReaderWriterFactory.CreateJsonWriter(ms);
            w.WriteStartElement("root");
            w.WriteAttributeString("type", "object");
            serializer.WriteObject(w, value);
            w.WriteEndElement();
            w.Flush();
            return Encoding.Default.GetString(ms.ToArray());
        }
    }

    [Fact]
    public static void DCJS_TypeWithNonSerializedField()
    {
        var value = new TypeWithSerializableAttributeAndNonSerializedField();
        value.Member1 = 11;
        value.Member2 = "22";
        value.SetMember3(33);
        value.Member4 = "44";

        var actual = SerializeAndDeserialize(value, "{\"Member1\":11,\"_member2\":\"22\",\"_member3\":33}");
        Assert.NotNull(actual);
        Assert.Equal(value.Member1, actual.Member1);
        Assert.Equal(value.Member2, actual.Member2);
        Assert.Equal(value.Member3, actual.Member3);
        Assert.Null(actual.Member4);
    }

    [Fact]
    public static void DCJS_TypeWithOptionalField()
    {
        var value = new TypeWithOptionalField();
        value.Member1 = 11;
        value.Member2 = 22;

        var actual = SerializeAndDeserialize(value, "{\"Member1\":11,\"Member2\":22}");
        Assert.NotNull(actual);
        Assert.Equal(value.Member1, actual.Member1);
        Assert.Equal(value.Member2, actual.Member2);

        int member1Value = 11;
        string payloadMissingOptionalField = $"{{\"Member1\":{member1Value}}}";
        var deserialized = DeserializeString<TypeWithOptionalField>(payloadMissingOptionalField);
        Assert.Equal(member1Value, deserialized.Member1);
        Assert.Equal(0, deserialized.Member2);
    }

    [Fact]
    public static void DCJS_SquareWithDeserializationCallback()
    {
        var value = new SquareWithDeserializationCallback(2);
        var actual = SerializeAndDeserialize(value, "{\"Edge\":2}");
        Assert.NotNull(actual);
        Assert.Equal(value.Area, actual.Area);
    }

    [Fact]
    public static void DCJS_DifferentDateTimeStylesForDeserialization()
    {
        string dateTimeFormat = "O";
        var original = new DateTime(2011, 9, 8, 7, 6, 54, 32);
        var styleToFormatDictionary = new Dictionary<DateTimeStyles, Func<string, string>>()
        {
            { DateTimeStyles.AllowLeadingWhite, (str) => str.Replace("2011", "           2011") },
            { DateTimeStyles.AllowTrailingWhite, (str) => str.Replace("0320000", "0320000   ") },
            { DateTimeStyles.AllowInnerWhite, (str) => str.Replace(":", " : ") },
            { DateTimeStyles.AllowWhiteSpaces, (str) => str.Replace(":", " : ") },
            { DateTimeStyles.AllowLeadingWhite | DateTimeStyles.AllowInnerWhite , (str) => str.Replace("2011", "           2011") },
        };
        foreach (var style in styleToFormatDictionary.Keys)
        {
            var dcjsSettings = new DataContractJsonSerializerSettings()
            {
                DateTimeFormat = new DateTimeFormat(dateTimeFormat, CultureInfo.InvariantCulture)
                {
                    DateTimeStyles = style
                },
            };
            var actual = SerializeAndDeserialize(original, null, dcjsSettings, null, true);
            Assert.Equal(original, actual);
        }
    }

    [Fact]
    public static void DCJS_NegativeDateTimeStylesTest_IncorrectDateTimeStyles()
    {
        string dateTimeFormat = "f";
        DateTimeStyles[] dateTimeStyles = { DateTimeStyles.AssumeUniversal | DateTimeStyles.RoundtripKind, (DateTimeStyles)int.MaxValue };
        foreach (var style in dateTimeStyles)
        {
            var dcjsSettings = new DataContractJsonSerializerSettings()
            {
                DateTimeFormat = new DateTimeFormat(dateTimeFormat, CultureInfo.InvariantCulture)
                {
                    DateTimeStyles = style
                },
            };
            var original = DateTime.Now;
            AssertExtensions.Throws<ArgumentException>("style", () => SerializeAndDeserialize(original, null, dcjsSettings, null, true));
        }
    }

    [Fact]
    public static void DCJS_RoundtrippingDateTime()
    {
        string dateTimeFormat = "o";
        DateTimeStyles[] dateTimeStyles =
        {
            DateTimeStyles.None, DateTimeStyles.RoundtripKind,
            DateTimeStyles.AllowWhiteSpaces | DateTimeStyles.RoundtripKind
        };
        foreach (var style in dateTimeStyles)
        {
            var dcjsSettings = new DataContractJsonSerializerSettings()
            {
                DateTimeFormat = new DateTimeFormat(dateTimeFormat, CultureInfo.InvariantCulture)
                {
                    DateTimeStyles = style
                },
            };
            var original = DateTime.Now;
            var actual = SerializeAndDeserialize(original, null, dcjsSettings, null, true);
            Assert.Equal(original, actual);
        }
    }

    [Fact]
    public static void DCJS_DateTimeFormatIsNull()
    {
        var settings = new DataContractJsonSerializerSettings();
        Assert.Throws<ArgumentNullException>(() => settings.DateTimeFormat = new DateTimeFormat(null));
        Assert.Throws<ArgumentNullException>(() => settings.DateTimeFormat = new DateTimeFormat("ddmmyyyyy", null));
    }

    [Fact]
    public static void DCJS_NegativeDateTimeStylesTest_IncorrectFormat()
    {
        var dateTimeFormat = "yyyy-MM-ddTHH:mm:ss.fffK";
        var original = new DateTime(2011, 1, 2, 3, 4, 5, 6);
        var dcjsSettings = new DataContractJsonSerializerSettings()
        {
            DateTimeFormat = new DateTimeFormat(dateTimeFormat, CultureInfo.InvariantCulture)
            {
                DateTimeStyles = DateTimeStyles.None
            },
        };
        var serializer = new DataContractJsonSerializer(typeof(DateTime), dcjsSettings);
        var ms = new MemoryStream();
        serializer.WriteObject(ms, original);
        var serializedJsonValue = Encoding.UTF8.GetString(ms.ToArray());
        serializedJsonValue = serializedJsonValue.Replace("2011", "         2011");
        Assert.Throws<SerializationException>(() => DeserializeString<DateTime>(serializedJsonValue));
    }

    [Fact]
    public static void DCJS_VerifyDateTimeForFormatStringDCJsonSerSetting()
    {
        var dcjsSettings = new DataContractJsonSerializerSettings()
        {
            DateTimeFormat = null,
            UseSimpleDictionaryFormat = true,
            EmitTypeInformation = EmitTypeInformation.AsNeeded,
            KnownTypes = new List<Type>()
        };
        var value = new DateTime(2010, 12, 1);
        var offsetMinutes = (int)TimeZoneInfo.Local.GetUtcOffset(value).TotalMinutes;
        var timeZoneString = string.Format("{0:+;-}{1}", offsetMinutes, new TimeSpan(0, offsetMinutes, 0).ToString(@"hhmm"));
        var baseline = $"\"\\/Date({1291161600000 - offsetMinutes * 60 * 1000}{timeZoneString})\\/\"";
        var actual = SerializeAndDeserialize(value, baseline, dcjsSettings);
        Assert.Equal(value, actual);
    }

    [ConditionalFact(typeof(PlatformDetection), nameof(PlatformDetection.IsNotInvariantGlobalization))]
    [ActiveIssue("https://github.com/dotnet/runtime/issues/60462", TestPlatforms.iOS | TestPlatforms.tvOS)]
    public static void DCJS_VerifyDateTimeForFormatStringDCJsonSerSettings()
    {
        var jsonTypes = new JsonTypes();
        var dcjsSettings = new DataContractJsonSerializerSettings()
        {
            DateTimeFormat = null,
            UseSimpleDictionaryFormat = true,
            EmitTypeInformation = EmitTypeInformation.AsNeeded,
            KnownTypes = new List<Type>()
        };

        var DTF_class = new JsonTypes.DTF_class()
        {
            dt1 = new DateTime(1, 1, 1, 3, 58, 32),
            dt2 = new DateTime(2010, 12, 20),
            dt3 = new DateTime(1998, 1, 1),
            dt4 = new DateTime(1, 1, 1, 3, 58, 32, DateTimeKind.Utc)
        };
        dcjsSettings = new DataContractJsonSerializerSettings() { DateTimeFormat = jsonTypes.DTF_yyyygg };
        var actual2 = SerializeAndDeserialize(DTF_class, "{\"dt1\":\"0001 A.D.\",\"dt2\":\"2010 A.D.\",\"dt3\":\"1998 A.D.\",\"dt4\":\"0001 A.D.\"}", dcjsSettings);
        Assert.NotNull(actual2);
        Assert.True(actual2.dt1 == new DateTime(1, 1, 1));
        Assert.True(actual2.dt2 == new DateTime(2010, 1, 1));
        Assert.True(actual2.dt3 == new DateTime(1998, 1, 1));
        Assert.True(actual2.dt4 == new DateTime(1, 1, 1));

        var graph = new DateTimeOffset(2008, 5, 1, 8, 6, 32, new TimeSpan(1, 0, 0));
        dcjsSettings = new DataContractJsonSerializerSettings() { DateTimeFormat = jsonTypes.DTF_DMMMM };
        var actual3 = SerializeAndDeserialize(graph, "{\"DateTime\":\"1, mayo\",\"OffsetMinutes\":60}", dcjsSettings);
        var expected3 = new DateTimeOffset(DateTime.Now.Year, 5, 1, 0, 0, 0, new TimeSpan(1, 0, 0));
        Assert.True(actual3 == expected3,
            $"{nameof(actual3)} was not as expected.\r\nExpected: {expected3} \r\n Actual: {actual3}");

        var dt35832 = new DateTime(DateTime.Now.Year, DateTime.Now.Month, DateTime.Now.Day, 3, 58, 32);
        var dt = new DateTime(DateTime.Now.Year, DateTime.Now.Month, DateTime.Now.Day);
        dcjsSettings = new DataContractJsonSerializerSettings() { DateTimeFormat = jsonTypes.DTF_hmsFt };
        string actualam = GetAmString(jsonTypes.DTF_hmsFt);
        string baselinelist = $"[\"03:58:32.00 {actualam}\",\"12:00:00.00 {actualam}\",\"12:00:00.00 {actualam}\",\"03:58:32.00 {actualam}\"]";
        var actual4 = SerializeAndDeserialize(jsonTypes.DT_List, baselinelist, dcjsSettings);
        Assert.NotNull(actual4);
        Assert.True(actual4[0] == dt35832);
        Assert.True(actual4[1] == dt);
        Assert.True(actual4[2] == dt);
        Assert.True(actual4[3] == dt35832);

        string baselinedictionary = $"[{{\"Key\":\"03:58:32.00 {actualam}\",\"Value\":\"03:58:32.00 {actualam}\"}},{{\"Key\":\"12:00:00.00 {actualam}\",\"Value\":\"12:00:00.00 {actualam}\"}}]";
        var actual5 = SerializeAndDeserialize(jsonTypes.DT_Dictionary, baselinedictionary, dcjsSettings);
        Assert.NotNull(actual5);
        Assert.True(actual5[dt35832] == dt35832);
        Assert.True(actual5[dt] == dt);

        var dateTime = new DateTime(2008, 5, 1, 8, 6, 32, DateTimeKind.Local);
        string expectedOutput = dateTime.ToString("yyyy-MM-ddTHH:mm:ss.fffK", DateTimeFormatInfo.CurrentInfo);
        expectedOutput = string.Format("\"{0}\"", expectedOutput);
        dcjsSettings = new DataContractJsonSerializerSettings() { DateTimeFormat = jsonTypes.DTF_DefaultFormatProviderIsDateTimeFormatInfoDotCurrentInfo };
        var actual6 = SerializeAndDeserialize(dateTime, expectedOutput, dcjsSettings);
        Assert.True(actual6 == dateTime);
    }

    [ConditionalFact(typeof(PlatformDetection), nameof(PlatformDetection.IsNotInvariantGlobalization))]
    public static void DCJS_VerifyDateTimeForDateTimeFormat()
    {
        var jsonTypes = new JsonTypes();
        var dateTime = new DateTime(DateTime.Now.Year, 12, 1);
        var expectedString = $"\"{dateTime:MMMM}\"";
        var dcjsSettings = new DataContractJsonSerializerSettings()
        {
            DateTimeFormat = jsonTypes.DTF_MMMM,
            UseSimpleDictionaryFormat = true,
            EmitTypeInformation = EmitTypeInformation.AsNeeded,
            KnownTypes = new List<Type>()
        };
        var actual = SerializeAndDeserialize(dateTime, expectedString, dcjsSettings);
        Assert.True(actual == dateTime);

        dcjsSettings = new DataContractJsonSerializerSettings()
        {
            DateTimeFormat = jsonTypes.DTF_hmsFt,
            UseSimpleDictionaryFormat = true,
            EmitTypeInformation = EmitTypeInformation.AsNeeded,
            KnownTypes = new List<Type>()
        };
        string actualam = GetAmString(jsonTypes.DTF_hmsFt);
        string baseline = $"\"03:58:32.00 {actualam}\"";
        var actual2 = SerializeAndDeserialize(new DateTime(1, 1, 1, 3, 58, 32), baseline, dcjsSettings);
        Assert.True(actual2 == new DateTime(DateTime.Today.Year, DateTime.Today.Month, DateTime.Today.Day, 3, 58, 32));

        dcjsSettings = new DataContractJsonSerializerSettings()
        {
            DateTimeFormat = jsonTypes.DTF_DMMMM,
            UseSimpleDictionaryFormat = true,
            EmitTypeInformation = EmitTypeInformation.AsNeeded,
            KnownTypes = new List<Type>()
        };
        var value3 = new DateTime(DateTime.Now.Year, 12, 20);
        var actual3 = SerializeAndDeserialize(value3, "\"20, diciembre\"", dcjsSettings);
        Assert.Equal(value3, actual3);

        dcjsSettings = new DataContractJsonSerializerSettings()
        {
            DateTimeFormat = jsonTypes.DTF_s,
            UseSimpleDictionaryFormat = true,
            EmitTypeInformation = EmitTypeInformation.AsNeeded,
            KnownTypes = new List<Type>()
        };
        var value4 = new DateTime(DateTime.Now.Year, DateTime.Now.Month, DateTime.Now.Day, 0, 0, 32);
        var actual4 = SerializeAndDeserialize(value4, "\"32\"", dcjsSettings);
        Assert.Equal(value4, actual4);

        dcjsSettings = new DataContractJsonSerializerSettings()
        {
            DateTimeFormat = jsonTypes.DTF_yyyygg,
            UseSimpleDictionaryFormat = true,
            EmitTypeInformation = EmitTypeInformation.AsNeeded,
            KnownTypes = new List<Type>()
        };
        var value5 = new DateTime(1998, 1, 1);
        var actual5 = SerializeAndDeserialize(value5, "\"1998 A.D.\"", dcjsSettings);
        Assert.Equal(value5, actual5);

        dcjsSettings = new DataContractJsonSerializerSettings()
        {
            DateTimeFormat = jsonTypes.DTF_UTC,
            UseSimpleDictionaryFormat = true,
            EmitTypeInformation = EmitTypeInformation.AsNeeded,
            KnownTypes = new List<Type>()
        };
        var value6 = new DateTime(1998, 1, 1, 8, 25, 32, DateTimeKind.Utc);
        var actual6 = SerializeAndDeserialize(value6, "\"1998-01-01T08:25:32.000Z\"", dcjsSettings);
        Assert.Equal(value6, actual6);
    }

    [Fact]
    public static void DCJS_VerifyDictionaryTypes()
    {
        var dcjsSettings = new DataContractJsonSerializerSettings()
        {
            DateTimeFormat = null,
            UseSimpleDictionaryFormat = true,
            EmitTypeInformation = EmitTypeInformation.AsNeeded,
            KnownTypes = new List<Type>()
        };
        var value = new JsonTypes.DictionaryClass();
        var actual = SerializeAndDeserialize(value, "{\"_dict\":{\"Title\":\"Sherlocl Kholmes\",\"Name\":\"study scarlet\"}}", dcjsSettings);
        Assert.NotNull(actual);

        var value2 = new ImplementDictionary()
        {
            {"",0},
            {"a1",1},
            {"a2",2},
            {"a3",3},
            {"a4",4}
        };
        dcjsSettings = new DataContractJsonSerializerSettings()
        {
            DateTimeFormat = null,
            UseSimpleDictionaryFormat = true,
            EmitTypeInformation = EmitTypeInformation.AsNeeded,
            KnownTypes = new List<Type>() { typeof(TestClass), typeof(TestStruct) }
        };
        var actual2 = SerializeAndDeserialize(value2, "{\"\":0,\"a1\":1,\"a2\":2,\"a3\":3,\"a4\":4}", dcjsSettings);
        Assert.NotNull(actual2);
        Assert.Equal(5, actual2.Count);
        Assert.Equal(0, actual2[""]);
        Assert.Equal(1, actual2["a1"]);
        Assert.Equal(2, actual2["a2"]);
        Assert.Equal(3, actual2["a3"]);
        Assert.Equal(4, actual2["a4"]);
    }

    [Fact]
    public static void DCJS_VerifyDictionaryFormat()
    {
        var jsonTypes = new JsonTypes();
        var dcjsSettings = new DataContractJsonSerializerSettings()
        {
            DateTimeFormat = null,
            UseSimpleDictionaryFormat = true,
            EmitTypeInformation = EmitTypeInformation.AsNeeded,
            KnownTypes = new List<Type>()
        };
        var actual = SerializeAndDeserialize(jsonTypes.StringKeyValue, "{\"Hi\":\"There\"}", dcjsSettings);
        Assert.NotNull(actual);
        Assert.Equal(jsonTypes.StringKeyValue, actual);

        var actual2 = SerializeAndDeserialize(jsonTypes.StructKeyValue, "{\"12\":{\"value1\":15}}", dcjsSettings);
        Assert.NotNull(actual2);
        Assert.Equal(jsonTypes.StructKeyValue, actual2);

        var actual3 = SerializeAndDeserialize(jsonTypes.EnumKeyValue, "{\"Value1\":4}", dcjsSettings);
        Assert.NotNull(actual3);
        Assert.Equal(jsonTypes.EnumKeyValue, actual3);

        dcjsSettings = new DataContractJsonSerializerSettings()
        {
            DateTimeFormat = null,
            UseSimpleDictionaryFormat = true,
            EmitTypeInformation = EmitTypeInformation.AsNeeded,
            KnownTypes = new List<Type>() { typeof(TestClass), typeof(TestStruct) }
        };
        var actual4 = SerializeAndDeserialize(jsonTypes.ObjectKeyValue, "{\"1,2#45\":{\"__type\":\"TestClass:#\",\"floatNum\":90,\"intList\":[4,5]},\"6,7#10\":{\"__type\":\"TestStruct:#\",\"value1\":25}}", dcjsSettings);
        Assert.NotNull(actual4);
        Assert.Equal(2, actual4.Count);
    }

    [Fact]
    public static void DCJS_VerifySuppressTypeInformation()
    {
        var testClassWithoutKT = new TestClassWithoutKT() { testClass = new TestClass() };
        var dcjsSettings = new DataContractJsonSerializerSettings()
        {
            DateTimeFormat = null,
            UseSimpleDictionaryFormat = false,
            EmitTypeInformation = EmitTypeInformation.Never,
            KnownTypes = new List<Type>()
        };
        var actual = SerializeAndDeserialize(testClassWithoutKT, "{\"testClass\":{\"floatNum\":0,\"intList\":null}}", dcjsSettings);
        Assert.NotNull(actual);
        Assert.True(actual.testClass.GetType().Name == "Object");

        var testClassWithKT = new TestClassWithKT() { testClass = new TestClass() };
        var actual2 = SerializeAndDeserialize(testClassWithKT, "{\"testClass\":{\"floatNum\":0,\"intList\":null}}", dcjsSettings);
        Assert.NotNull(actual2);
        Assert.True(actual2.testClass.GetType().Name == "Object");
    }

    [Fact]
    public static void DCJS_VerifyIndentation()
    {
        var testClass = new TestClass()
        {
            floatNum = 2.3f,
            intList = new List<int>() { 2, 3, 4 }
        };

        string spaceChars = "    ";
        var dcjsSettings = new DataContractJsonSerializerSettings()
        {
            DateTimeFormat = null,
            UseSimpleDictionaryFormat = false,
            EmitTypeInformation = EmitTypeInformation.AsNeeded,
            KnownTypes = new List<Type>()
        };
        var value = VerifyIndentationOfSerializedXml(
            testClass,
            "{\r\n    \"floatNum\": 2.3,\r\n    \"intList\": [\r\n        2,\r\n        3,\r\n        4\r\n    ]\r\n}",
            spaceChars,
            dcjsSettings);
        Assert.NotNull(value);
        Assert.True(value.floatNum == 2.3f);
        Assert.True(value.intList[0] == 2);
        Assert.True(value.intList[1] == 3);
        Assert.True(value.intList[2] == 4);

        spaceChars = "\n";
        var value2 = VerifyIndentationOfSerializedXml(
            testClass,
            "{\r\n\n\"floatNum\": 2.3,\r\n\n\"intList\": [\r\n\n\n2,\r\n\n\n3,\r\n\n\n4\r\n\n]\r\n}",
            spaceChars,
            dcjsSettings);
        Assert.NotNull(value2);
        Assert.True(value2.floatNum == 2.3f);
        Assert.True(value2.intList[0] == 2);
        Assert.True(value2.intList[1] == 3);
        Assert.True(value2.intList[2] == 4);

        var emptyList = new TestClass()
        {
            floatNum = 2.3f,
            intList = new List<int>()
        };
        spaceChars = "  ";
        var value3 = VerifyIndentationOfSerializedXml(
          emptyList,
          "{\r\n  \"floatNum\": 2.3,\r\n  \"intList\": [ ]\r\n}",
          spaceChars,
          dcjsSettings);
        Assert.NotNull(value3);
        Assert.True(value3.floatNum == 2.3f);
        Assert.True(value3.intList.Count == 0);

        var jsonTypes = new JsonTypes();
        dcjsSettings = new DataContractJsonSerializerSettings()
        {
            DateTimeFormat = null,
            UseSimpleDictionaryFormat = true,
            EmitTypeInformation = EmitTypeInformation.AsNeeded,
            KnownTypes = new List<Type>() { typeof(Dictionary<string, string>), typeof(List<object>), typeof(int[]) }
        };
        spaceChars = "  ";
        var value4 = VerifyIndentationOfSerializedXml(
           jsonTypes.ObjectList,
           "[\r\n  [\r\n    {\r\n      \"__type\": \"KeyValuePairOfstringstring:#System.Collections.Generic\",\r\n      \"key\": \"Title\",\r\n      \"value\": \"Sherlocl Kholmes\"\r\n    }\r\n  ],\r\n  [\r\n    1,\r\n    2,\r\n    3\r\n  ],\r\n  [\r\n    \"hi\",\r\n    1,\r\n    \"there\"\r\n  ]\r\n]",
           spaceChars,
           dcjsSettings);
        Assert.NotNull(value4);
        Assert.True(value4.Count == 3);
    }

    [Fact]
    public static void DCJS_Regression195109()
    {
        var value = new DerivedType();
        var actual = VerifyIndentationOfSerializedXml(value, "", null, null, () => new DataContractJsonSerializer(typeof(BaseType)), true);
        Assert.Equal(value.StrBase, actual.StrBase);
        Assert.Equal(value.StrDerived, actual.StrDerived);
    }

    [Fact]
    public static void DCJS_ConcurrentDictionary()
    {
        var value = new ConcurrentDictionary<string, int>();
        value["one"] = 1;
        value["two"] = 2;
        var deserializedValue = SerializeAndDeserialize<ConcurrentDictionary<string, int>>(value, @"[{""Key"":""one"",""Value"":1},{""Key"":""two"",""Value"":2}]",
            null, null, true);

        Assert.NotNull(deserializedValue);
        Assert.True(deserializedValue.Count == 2);
        Assert.True(deserializedValue["one"] == 1);
        Assert.True(deserializedValue["two"] == 2);
    }

    [Fact]
    public static void DCJS_ReadOnlyDictionaryCausingDuplicateInvalidDataContract()
    {
        var dict = new Dictionary<string, int>();
        dict["Foo"] = 1;
        dict["Bar"] = 2;
        var value = new ReadOnlyDictionary<string, int>(dict);
        var deserializedValue = SerializeAndDeserialize(value, "{\"m_dictionary\":[{\"Key\":\"Foo\",\"Value\":1},{\"Key\":\"Bar\",\"Value\":2}]}", null, () => new DataContractJsonSerializer(typeof(ReadOnlyDictionary<string, int>)));
        Assert.StrictEqual(value.Count, deserializedValue.Count);
        Assert.StrictEqual(value["Foo"], deserializedValue["Foo"]);
        Assert.StrictEqual(value["Bar"], deserializedValue["Bar"]);
    }

    [Fact]
    public static void DCJS_InvalidDataContract_Write_Invalid_Types_Throws()
    {
        foreach (NativeJsonTestData td in NativeJsonTestData.Json_InvalidTypes)
        {
            Assert.Throws<InvalidDataContractException>(() =>
            {
                object o = td.Instantiate();
                DataContractJsonSerializer dcs = new DataContractJsonSerializer(o.GetType());
                MemoryStream ms = new MemoryStream();
                dcs.WriteObject(ms, o);
            });
        }
    }

    [Fact]
    public static void DCJS_ValidateExceptionOnUnspecifiedRootSerializationType()
    {
        var value = new UnspecifiedRootSerializationType();
        string baseline = "{\"MyIntProperty\":0,\"MyStringProperty\":null}";
        var actual = SerializeAndDeserialize(value, baseline);

        Assert.Equal(value.MyIntProperty, actual.MyIntProperty);
        Assert.Equal(value.MyStringProperty, actual.MyStringProperty);
    }

    [Fact]
    public static void DSJS_ThrowExceptionOnDispose()
    {
        using (MemoryStream ms = new MemoryStream(System.Text.Encoding.Unicode.GetBytes("{}")))
        {
            XmlDictionaryReader jsonReader = JsonReaderWriterFactory.CreateJsonReader(ms, System.Text.Encoding.Unicode, XmlDictionaryReaderQuotas.Max,
                reader =>
                {
                    //sample exception on reader close
                    throw new DivideByZeroException();
                });
            try
            {
                jsonReader.Dispose();
                Assert.False(true);
            }
            catch (Exception ex)
            {
                Assert.True(
                    ex is InvalidOperationException ||
                    //Netfx throws System.Runtime.CallbackException
                    ex.GetType().FullName == "System.Runtime.CallbackException"
                    );
            }
        }
    }

    [Fact]
    public static void DCJS_DifferentCollectionsOfSameTypeAsKnownTypes()
    {
        Assert.Throws<InvalidOperationException>(() => {
            (new DataContractSerializer(typeof(TypeWithKnownTypesOfCollectionsWithConflictingXmlName))).WriteObject(new MemoryStream(), new TypeWithKnownTypesOfCollectionsWithConflictingXmlName());
        });
    }

    private static T SerializeAndDeserialize<T>(T value, string baseline, DataContractJsonSerializerSettings settings = null, Func<DataContractJsonSerializer> serializerFactory = null, bool skipStringCompare = false)
    {
        DataContractJsonSerializer dcjs;
        if (serializerFactory != null)
        {
            dcjs = serializerFactory();
        }
        else
        {
            dcjs = (settings != null) ? new DataContractJsonSerializer(typeof(T), settings) : new DataContractJsonSerializer(typeof(T));
        }

        using (MemoryStream ms = new MemoryStream())
        {
            dcjs.WriteObject(ms, value);
            ms.Position = 0;

            string actualOutput = new StreamReader(ms).ReadToEnd();
            ms.Position = 0;

            if (!skipStringCompare)
            {
                Utils.CompareResult result = Utils.Compare(baseline, actualOutput, false);
                Assert.True(result.Equal, string.Format("{1}{0}Test failed for input: {2}{0}Expected: {3}{0}Actual: {4}",
                    Environment.NewLine, result.ErrorMessage, value, baseline, actualOutput));
            }

            ms.Position = 0;
            T deserialized = (T)dcjs.ReadObject(ms);

            return deserialized;
        }
    }

    private static T DeserializeString<T>(string stringToDeserialize, bool shouldReportDeserializationExceptions = true, DataContractJsonSerializerSettings settings = null, Func<DataContractJsonSerializer> serializerFactory = null)
    {
        DataContractJsonSerializer dcs;
        if (serializerFactory != null)
        {
            dcs = serializerFactory();
        }
        else
        {
            dcs = (settings != null) ? new DataContractJsonSerializer(typeof(T), settings) : new DataContractJsonSerializer(typeof(T));
        }

        byte[] bytesToDeserialize = Encoding.UTF8.GetBytes(stringToDeserialize);
        using (MemoryStream ms = new MemoryStream(bytesToDeserialize))
        {
            ms.Position = 0;
            T deserialized = (T)dcs.ReadObject(ms);

            return deserialized;
        }
    }

    private static T VerifyIndentationOfSerializedXml<T>(T value, string baseline, string indentChars = null, DataContractJsonSerializerSettings settings = null, Func<DataContractJsonSerializer> serializerFactory = null, bool skipStringCompare = false)
    {
        DataContractJsonSerializer dcjs;
        if (serializerFactory != null)
        {
            dcjs = serializerFactory();
        }
        else
        {
            dcjs = (settings != null) ? new DataContractJsonSerializer(typeof(T), settings) : new DataContractJsonSerializer(typeof(T));
        }

        using (var ms = new MemoryStream())
        {
            XmlDictionaryWriter writer;
            if (indentChars != null)
            {
                writer = JsonReaderWriterFactory.CreateJsonWriter(ms, Encoding.UTF8, true, true, indentChars);
            }
            else
            {
                writer = JsonReaderWriterFactory.CreateJsonWriter(ms, Encoding.UTF8, false, true);
            }
            dcjs.WriteObject(writer, value);
            writer.Flush();
            string actualOutput = Encoding.UTF8.GetString(ms.GetBuffer(), 0, (int)ms.Position);
            if (!skipStringCompare)
            {
                Utils.CompareResult result = Utils.Compare(baseline, actualOutput, false);
                Assert.True(result.Equal, string.Format("{1}{0}Test failed for input: {2}{0}Expected: {3}{0}Actual: {4}",
                    Environment.NewLine, result.ErrorMessage, value, baseline, actualOutput));
            }
            ms.Position = 0;
            T deserialized = (T)dcjs.ReadObject(ms);
            return deserialized;
        }
    }

    private static string s_errorMsg = "The field/property {0} value of deserialized object is wrong";
    private static string getCheckFailureMsg(string propertyName)
    {
        return string.Format(s_errorMsg, propertyName);
    }

    private static string GetAmString(DateTimeFormat dateTimeFormat)
    {
        return ((CultureInfo)dateTimeFormat.FormatProvider).DateTimeFormat.AMDesignator;
    }
}