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GetStringComparerTests.cs
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GetStringComparerTests.cs
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// Licensed to the .NET Foundation under one or more agreements.
// The .NET Foundation licenses this file to you under the MIT license.
using System;
using System.Runtime.InteropServices;
using Xunit;
namespace System.Globalization.Tests
{
public class GetStringComparerTests
{
[Fact]
public void GetStringComparer_Invalid()
{
AssertExtensions.Throws<ArgumentNullException>("compareInfo", () => ((CompareInfo)null).GetStringComparer(CompareOptions.None));
AssertExtensions.Throws<ArgumentException>("options", () => new CultureInfo("tr-TR").CompareInfo.GetStringComparer((CompareOptions)0xFFFF));
AssertExtensions.Throws<ArgumentException>("options", () => new CultureInfo("tr-TR").CompareInfo.GetStringComparer(CompareOptions.Ordinal | CompareOptions.IgnoreCase));
AssertExtensions.Throws<ArgumentException>("options", () => new CultureInfo("tr-TR").CompareInfo.GetStringComparer(CompareOptions.OrdinalIgnoreCase | CompareOptions.IgnoreCase));
}
[Theory]
[InlineData("hello", "hello", "fr-FR", CompareOptions.IgnoreCase, 0, 0)]
[InlineData("hello", "HELLo", "fr-FR", CompareOptions.IgnoreCase, 0, 0)]
[InlineData("hello", null, "fr-FR", CompareOptions.IgnoreCase, 1, 1)]
[InlineData(null, "hello", "fr-FR", CompareOptions.IgnoreCase, -1, -1)]
[InlineData(null, null, "fr-FR", CompareOptions.IgnoreCase, 0, 0)]
[InlineData("abc", "def", "fr-FR", CompareOptions.IgnoreCase, -1, -1)]
[InlineData("abc", "ABC", "fr-FR", CompareOptions.IgnoreCase, 0, 0)]
[InlineData("def", "ABC", "fr-FR", CompareOptions.IgnoreCase, 1, 1)]
[InlineData("abc", "ABC", "en-US", CompareOptions.Ordinal, 1, 1)]
[InlineData("abc", "ABC", "en-US", CompareOptions.OrdinalIgnoreCase, 0, 0)]
[InlineData("Cot\u00E9", "cot\u00E9", "fr-FR", CompareOptions.IgnoreCase, 0, 0)]
[InlineData("cot\u00E9", "c\u00F4te", "fr-FR", CompareOptions.None, 1, -1)]
public static void Compare(string x, string y, string cultureName, CompareOptions options, int expectedNls, int expectedICU)
{
int expected = PlatformDetection.IsNlsGlobalization ? expectedNls : expectedICU;
StringComparer comparer = new CultureInfo(cultureName).CompareInfo.GetStringComparer(options);
Assert.Equal(expected, Math.Sign(comparer.Compare(x, y)));
Assert.Equal((expected == 0), comparer.Equals(x, y));
if (x != null && y != null)
{
Assert.Equal((expected == 0), comparer.GetHashCode(x).Equals(comparer.GetHashCode(y)));
}
}
[Fact]
public void GetHashCode_Null_ThrowsArgumentNullException()
{
AssertExtensions.Throws<ArgumentNullException>("obj", () => new CultureInfo("tr-TR").CompareInfo.GetStringComparer(CompareOptions.None).GetHashCode(null));
}
[Theory]
[InlineData("en-US", CompareOptions.IgnoreCase, "en-US", CompareOptions.IgnoreCase, true)]
[InlineData("en-US", CompareOptions.IgnoreCase, "en-US", CompareOptions.IgnoreSymbols, false)]
[InlineData("en-US", CompareOptions.IgnoreCase, "fr-FR", CompareOptions.IgnoreCase, false)]
[InlineData("en-US", CompareOptions.IgnoreCase, "fr-FR", CompareOptions.Ordinal, false)]
public void EqualsTest(string cultureName1, CompareOptions options1, string cultureName2, CompareOptions options2, bool expected)
{
StringComparer comparer1 = new CultureInfo(cultureName1).CompareInfo.GetStringComparer(options1);
StringComparer comparer2 = new CultureInfo(cultureName2).CompareInfo.GetStringComparer(options2);
Assert.Equal(expected, comparer1.Equals(comparer2));
Assert.Equal(expected, comparer1.GetHashCode().Equals(comparer2.GetHashCode()));
}
}
}