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DecimalTypeTests.cs
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DecimalTypeTests.cs
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using System;
using System.Text;
using HotChocolate.Language;
using Xunit;
namespace HotChocolate.Types
{
public class DecimalTypeTests
{
[Fact]
public void IsInstanceOfType_FloatLiteral_True()
{
// arrange
var type = new DecimalType();
// act
var result = type.IsInstanceOfType(CreateExponentialLiteral());
// assert
Assert.True(result);
}
[Fact]
public void IsInstanceOfType_NullLiteral_True()
{
// arrange
var type = new DecimalType();
// act
var result = type.IsInstanceOfType(NullValueNode.Default);
// assert
Assert.True(result);
}
[Fact]
public void IsInstanceOfType_IntLiteral_True()
{
// arrange
var type = new DecimalType();
// act
var result = type.IsInstanceOfType(new IntValueNode(123));
// assert
Assert.True(result);
}
[Fact]
public void IsInstanceOfType_StringLiteral_False()
{
// arrange
var type = new DecimalType();
// act
var result = type.IsInstanceOfType(new StringValueNode("123"));
// assert
Assert.False(result);
}
[Fact]
public void IsInstanceOfType_Null_Throws()
{
// arrange
var type = new DecimalType();
// act
// assert
Assert.Throws<ArgumentNullException>(
() => type.IsInstanceOfType(null));
}
[Fact]
public void Serialize_Type()
{
// arrange
var type = new DecimalType();
decimal value = 123.456M;
// act
var serializedValue = type.Serialize(value);
// assert
Assert.IsType<decimal>(serializedValue);
Assert.Equal(value, serializedValue);
}
[Fact]
public void Serialize_Null()
{
// arrange
var type = new DecimalType();
// act
var serializedValue = type.Serialize(null);
// assert
Assert.Null(serializedValue);
}
[Fact]
public void Serialize_Wrong_Type_Throws()
{
// arrange
var type = new DecimalType();
var input = "abc";
// act
// assert
Assert.Throws<SerializationException>(
() => type.Serialize(input));
}
[Fact]
public void Serialize_MaxValue_Violation()
{
// arrange
var type = new DecimalType(0, 100);
decimal value = 123.456M;
// act
// assert
Assert.Throws<SerializationException>(
() => type.Serialize(value));
}
[Fact]
public void ParseLiteral_FixedPointLiteral()
{
// arrange
var type = new DecimalType();
FloatValueNode literal = CreateFixedPointLiteral();
// act
var value = type.ParseLiteral(literal);
// assert
Assert.IsType<decimal>(value);
Assert.Equal(literal.ToDecimal(), value);
}
[Fact]
public void ParseLiteral_ExponentialLiteral()
{
// arrange
var type = new DecimalType();
FloatValueNode literal = CreateExponentialLiteral();
// act
var value = type.ParseLiteral(literal);
// assert
Assert.IsType<decimal>(value);
Assert.Equal(literal.ToDecimal(), value);
}
[Fact]
public void ParseLiteral_IntLiteral()
{
// arrange
var type = new DecimalType();
var literal = new IntValueNode(123);
// act
var value = type.ParseLiteral(literal);
// assert
Assert.IsType<decimal>(value);
Assert.Equal(literal.ToDecimal(), value);
}
[Fact]
public void ParseLiteral_NullValueNode()
{
// arrange
var type = new DecimalType();
// act
var output = type.ParseLiteral(NullValueNode.Default);
// assert
Assert.Null(output);
}
[Fact]
public void ParseLiteral_Wrong_ValueNode_Throws()
{
// arrange
var type = new DecimalType();
var input = new StringValueNode("abc");
// act
// assert
Assert.Throws<SerializationException>(
() => type.ParseLiteral(input));
}
[Fact]
public void ParseLiteral_Null_Throws()
{
// arrange
var type = new DecimalType();
// act
// assert
Assert.Throws<ArgumentNullException>(
() => type.ParseLiteral(null));
}
[Fact]
public void ParseValue_MaxValue()
{
// arrange
var type = new DecimalType(1, 100);
decimal input = 100M;
// act
var literal = (FloatValueNode)type.ParseValue(input);
// assert
Assert.Equal(100M, literal.ToDecimal());
}
[Fact]
public void ParseValue_MaxValue_Violation()
{
// arrange
var type = new DecimalType(1, 100);
decimal input = 101M;
// act
Action action = () => type.ParseValue(input);
// assert
Assert.Throws<SerializationException>(action);
}
[Fact]
public void ParseValue_MinValue()
{
// arrange
var type = new DecimalType(1, 100);
decimal input = 1M;
// act
var literal = (FloatValueNode)type.ParseValue(input);
// assert
Assert.Equal(1M, literal.ToDecimal());
}
[Fact]
public void ParseValue_MinValue_Violation()
{
// arrange
var type = new DecimalType(1, 100);
decimal input = 0M;
// act
Action action = () => type.ParseValue(input);
// assert
Assert.Throws<SerializationException>(action);
}
[Fact]
public void ParseValue_Wrong_Value_Throws()
{
// arrange
var type = new DecimalType();
var value = "123";
// act
// assert
Assert.Throws<SerializationException>(
() => type.ParseValue(value));
}
[Fact]
public void ParseValue_Null()
{
// arrange
var type = new DecimalType();
object input = null;
// act
object output = type.ParseValue(input);
// assert
Assert.IsType<NullValueNode>(output);
}
[Fact]
public void ParseValue_Nullable()
{
// arrange
var type = new DecimalType();
decimal? input = 123M;
// act
FloatValueNode output = (FloatValueNode)type.ParseValue(input);
// assert
Assert.Equal(123M, output.ToDecimal());
}
[Fact]
public void Ensure_TypeKind_is_Scalar()
{
// arrange
var type = new DecimalType();
// act
TypeKind kind = type.Kind;
// assert
Assert.Equal(TypeKind.Scalar, kind);
}
[Fact]
public void ParseValue_HandlesMoreThan6Digits()
{
// arrange
var type = new DecimalType();
var input = 1234567.1234567m;
var output = "1234567.1234567";
// act
var result = type.ParseValue(input);
// assert
Assert.True(result is FloatValueNode);
Assert.True(result.Value is string);
Assert.Equal(output, (string)result.Value);
}
[Fact]
public void ParseValue_FormatsToDefaultSignificantDigits()
{
// arrange
var type = new DecimalType();
var input = 1234567.891123456789m;
var output = "1234567.891123456789";
// act
var result = type.ParseValue(input);
// assert
Assert.True(result is FloatValueNode);
Assert.True(result.Value is string);
Assert.Equal(output, (string)result.Value);
}
[Fact]
public void ParseValue_Handle12Digits()
{
// arrange
var type = new DecimalType();
var input = 1234567.890123456789m;
var output = "1234567.890123456789";
// act
var result = type.ParseValue(input);
// assert
Assert.True(result is FloatValueNode);
Assert.True(result.Value is string);
Assert.Equal(output, (string)result.Value);
}
[Fact]
public void ParseValue_FormatsToSpecifiedNumberOfDecimalDigitsLong()
{
// arrange
var type = new DecimalType();
var input = 1234567.890123456789m;
var output = "1234567.890123456789";
// act
var result = type.ParseValue(input);
// assert
Assert.True(result is FloatValueNode);
Assert.True(result.Value is string);
Assert.Equal(output, (string)result.Value);
}
private FloatValueNode CreateExponentialLiteral() =>
new FloatValueNode(Encoding.UTF8.GetBytes("1.000000E+000"), FloatFormat.Exponential);
private FloatValueNode CreateFixedPointLiteral() =>
new FloatValueNode(Encoding.UTF8.GetBytes("1.23"), FloatFormat.FixedPoint);
}
}