public static void Equals___Should_return_false___When_item1_and_item2_have_different_ARGB()
{
// Arrange
var systemUnderTest = new NullableColorEqualityComparer();
Color?item1 = Color.FromArgb(255, 255, 218, 185);
Color?item2 = Color.FromArgb(254, 255, 218, 185);
Color?item3 = Color.FromArgb(255, 254, 218, 185);
Color?item4 = Color.FromArgb(255, 255, 219, 185);
Color?item5 = Color.FromArgb(255, 255, 218, 184);
// Act
var actual1 = systemUnderTest.Equals(item1, item2);
var actual2 = systemUnderTest.Equals(item1, item3);
var actual3 = systemUnderTest.Equals(item1, item4);
var actual4 = systemUnderTest.Equals(item1, item5);
var actual5 = systemUnderTest.Equals(item2, item3);
var actual6 = systemUnderTest.Equals(item2, item4);
var actual7 = systemUnderTest.Equals(item2, item5);
var actual8 = systemUnderTest.Equals(item3, item4);
var actual9 = systemUnderTest.Equals(item3, item5);
var actual10 = systemUnderTest.Equals(item4, item5);
// Assert
actual1.Should().BeFalse();
actual2.Should().BeFalse();
actual3.Should().BeFalse();
actual4.Should().BeFalse();
actual5.Should().BeFalse();
actual6.Should().BeFalse();
actual7.Should().BeFalse();
actual8.Should().BeFalse();
actual9.Should().BeFalse();
actual10.Should().BeFalse();
}
public static void GetHashCode___Should_return_different_hash_code___For_different_Color_objects()
{
// Arrange
Color?item1 = Color.FromArgb(255, 255, 218, 185);
Color?item2 = Color.FromArgb(254, 255, 218, 185);
Color?item3 = Color.FromArgb(255, 254, 218, 185);
Color?item4 = Color.FromArgb(255, 255, 219, 185);
Color?item5 = Color.FromArgb(255, 255, 218, 184);
var systemUnderTest = new NullableColorEqualityComparer();
// Act
var hash1 = systemUnderTest.GetHashCode(item1);
var hash2 = systemUnderTest.GetHashCode(item2);
var hash3 = systemUnderTest.GetHashCode(item3);
var hash4 = systemUnderTest.GetHashCode(item4);
var hash5 = systemUnderTest.GetHashCode(item5);
// Assert
hash1.Should().NotBe(hash2);
hash1.Should().NotBe(hash3);
hash1.Should().NotBe(hash4);
hash1.Should().NotBe(hash5);
hash2.Should().NotBe(hash3);
hash2.Should().NotBe(hash4);
hash2.Should().NotBe(hash5);
hash3.Should().NotBe(hash4);
hash3.Should().NotBe(hash5);
hash4.Should().NotBe(hash5);
}
public static void GetHashCode___Should_not_throw___When_Nullable_Color_is_null()
{
// Arrange
var systemUnderTest = new NullableColorEqualityComparer();
// Act
var hash = Record.Exception(() => systemUnderTest.GetHashCode(null));
// Assert
hash.Should().BeNull();
}
public static void GetHashCode___Should_return_same_hash_code___When_called_twice_with_null()
{
// Arrange
var systemUnderTest = new NullableColorEqualityComparer();
// Act
var hash1 = systemUnderTest.GetHashCode(null);
var hash2 = systemUnderTest.GetHashCode(null);
// Assert
hash1.Should().Be(hash2);
}
public static void Equals___Should_return_true___When_item1_and_item2_are_null()
{
// Arrange
var systemUnderTest = new NullableColorEqualityComparer();
Color?item1 = null;
Color?item2 = null;
// Act
var actual = systemUnderTest.Equals(item1, item2);
// Assert
actual.Should().BeTrue();
}
public static void Equals___Should_return_true___When_both_items_are_the_same_object_reference()
{
// Arrange
var systemUnderTest = new NullableColorEqualityComparer();
Color?item1 = Color.FromArgb(255, 218, 185);
Color?item2 = Color.PeachPuff;
// Act
var actual1 = systemUnderTest.Equals(item1, item1);
var actual2 = systemUnderTest.Equals(item2, item2);
// Assert
actual1.Should().BeTrue();
actual2.Should().BeTrue();
}
public static void GetHashCode___Should_return_same_hash_code___For_Color_objects_that_are_equal()
{
// Arrange
Color?item1 = Color.FromArgb(255, 255, 218, 185);
Color?item2 = Color.FromArgb(255, 218, 185);
Color?item3 = Color.PeachPuff;
var systemUnderTest = new NullableColorEqualityComparer();
// Act
var hash1 = systemUnderTest.GetHashCode(item1);
var hash2 = systemUnderTest.GetHashCode(item2);
var hash3 = systemUnderTest.GetHashCode(item3);
// Assert
hash1.Should().Be(hash2);
hash2.Should().Be(hash3);
}
public static void Equals___Should_return_true___When_item1_and_item2_have_the_same_ARGB()
{
// Arrange
var systemUnderTest = new NullableColorEqualityComparer();
Color?item1 = Color.FromArgb(255, 255, 218, 185);
Color?item2 = Color.FromArgb(255, 218, 185);
Color?item3 = Color.PeachPuff;
// Act
var actual1 = systemUnderTest.Equals(item1, item2);
var actual2 = systemUnderTest.Equals(item1, item3);
var actual3 = systemUnderTest.Equals(item2, item3);
// Assert
actual1.Should().BeTrue();
actual2.Should().BeTrue();
actual3.Should().BeTrue();
}
public static void Equals___Should_return_false___When_item1_is_null_and_item2_is_not_or_vice_versa()
{
// Arrange
var systemUnderTest = new NullableColorEqualityComparer();
Color?item1a = null;
Color?item1b = Color.PeachPuff;
Color?item2a = Color.PeachPuff;
Color?item2b = null;
// Act
var actual1 = systemUnderTest.Equals(item1a, item1b);
var actual2 = systemUnderTest.Equals(item2a, item2b);
// Assert
actual1.Should().BeFalse();
actual2.Should().BeFalse();
}
public static void GetHashCode___Should_return_same_hash_code___When_called_twice_on_same_object_reference()
{
// Arrange
Color?item1 = Color.FromArgb(255, 218, 185);
Color?item2 = Color.PeachPuff;
var systemUnderTest = new NullableColorEqualityComparer();
// Act
var hash1a = systemUnderTest.GetHashCode(item1);
var hash1b = systemUnderTest.GetHashCode(item1);
var hash2a = systemUnderTest.GetHashCode(item2);
var hash2b = systemUnderTest.GetHashCode(item2);
// Assert
hash1a.Should().Be(hash1b);
hash2a.Should().Be(hash2b);
}