public void HashCodeInvariantCultureCaseInsensitive()
{
// Arrange
var comparer = CharacterComparer.Create(CultureInfo.InvariantCulture, ignoreCase: true);
// Act
var objectHashCode = comparer.GetHashCode((object)'h');
var objectHashCode2 = comparer.GetHashCode((object)'h');
var objectHashCode3 = comparer.GetHashCode((object)'H');
var charHashCode = comparer.GetHashCode('h');
var charHashCode2 = comparer.GetHashCode('h');
var charHashCode3 = comparer.GetHashCode('H');
// Assert
comparer.Should().NotBeNull();
objectHashCode.Should().Be(objectHashCode2);
objectHashCode.Should().Be(objectHashCode3);
charHashCode.Should().Be(charHashCode2);
charHashCode.Should().Be(charHashCode3);
objectHashCode.Should().Be(charHashCode);
objectHashCode2.Should().Be(charHashCode2);
objectHashCode3.Should().Be(charHashCode3);
objectHashCode.Should().Be(charHashCode2);
objectHashCode.Should().Be(charHashCode3);
objectHashCode3.Should().Be(charHashCode);
}
public void ExpectedCompare(CharacterComparer comparer)
{
// Arrange
// se parameter
// Act
var bothObjectNullCompare = comparer.Compare((object)null, (object)null);
var objectCompare = comparer.Compare((object)'h', (object)'h');
var charCompare = comparer.Compare('h', 'h');
const char instance = 'h';
var objectReferenceCompare = comparer.Compare((object)instance, (object)instance);
var leftObjectNullCompare = comparer.Compare(null, (object)'h');
var leftCharNullCompare = comparer.Compare(null, 'h');
var rightObjectNullCompare = comparer.Compare((object)'h', null);
var rightCharNullCompare = comparer.Compare('h', null);
var lowerCompare = comparer.Compare('a', 'h');
var higherCompoare = comparer.Compare('h', 'a');
// Assert
objectCompare.Should().Be(0);
charCompare.Should().Be(0);
bothObjectNullCompare.Should().Be(0);
objectReferenceCompare.Should().Be(0);
leftObjectNullCompare.Should().Be(-1);
leftCharNullCompare.Should().Be(-1);
rightObjectNullCompare.Should().Be(1);
rightCharNullCompare.Should().Be(1);
lowerCompare.Should().BeInRange(int.MinValue, -1);
higherCompoare.Should().BeInRange(1, int.MaxValue);
}
public void InvalidCreationArguments()
{
// Arrange
// Act
Action nullCreationArgumentAct = () => CharacterComparer.Create(null, ignoreCase: true);
// Assert
nullCreationArgumentAct.Should().ThrowExactly <ArgumentNullException>();
}
public void InvalidHasCodeArguments()
{
// Arrange
var comparer = CharacterComparer.Create(CultureInfo.InvariantCulture, ignoreCase: true);
// Act
Action nullHashCodeAct = () => comparer.GetHashCode(null);
Action nullHashCodeAct2 = () => comparer.GetHashCode((object)null);
// Assert
nullHashCodeAct.Should().ThrowExactly <ArgumentNullException>();
nullHashCodeAct2.Should().ThrowExactly <ArgumentNullException>();
}
public void ComparerObjectHashCodeComparison()
{
// Arrange
var comparer = CharacterComparer.Create(CultureInfo.InvariantCulture, ignoreCase: true);
var obj = new object();
// Act
var objectHashCode = obj.GetHashCode();
var comparerHashCode = comparer.GetHashCode(obj);
// Assert
comparer.Should().NotBeNull();
objectHashCode.Should().Be(comparerHashCode);
}
public void EqualityInvariantCultureCaseSensitive()
{
// Arrange
var comparer = CharacterComparer.Create(CultureInfo.InvariantCulture, ignoreCase: false);
// Act
var objectEquality = comparer.Equals((object)'H', (object)'H');
var charEquality = comparer.Equals('H', 'H');
var objectInequality = comparer.Equals((object)'h', (object)'H');
var charInequality = comparer.Equals('h', 'H');
// Assert
comparer.Should().NotBeNull();
objectEquality.Should().BeTrue();
charEquality.Should().BeTrue();
objectInequality.Should().BeFalse();
charInequality.Should().BeFalse();
}
public void ComparerNonCharEqualityComparison()
{
// Arrange
var comparer = CharacterComparer.Create(CultureInfo.InvariantCulture, ignoreCase: true);
// Act
var fromNumberCompare = 42.CompareTo(84);
var comparerNumberCompare = comparer.Compare(42, 84);
Action mixedCompareAct = () => comparer.Compare(42, 'A');
Action mixedCompareAct2 = () => comparer.Compare('A', 42);
Action objectCompareAct = () => comparer.Compare(new object(), 42);
var nullCompare = comparer.Compare('A', null);
// Assert
comparer.Should().NotBeNull();
fromNumberCompare.Should().Be(comparerNumberCompare);
mixedCompareAct.Should().ThrowExactly <ArgumentException>();
mixedCompareAct2.Should().ThrowExactly <ArgumentException>();
objectCompareAct.Should().ThrowExactly <ArgumentException>();
nullCompare.Should().Be(1);
}