public static void Equals___Should_return_true___When_both_items_are_the_same_object_reference()
{
// Arrange
var systemUnderTest = new NullableDateTimeEqualityComparer();
DateTime?utcDateTime = DateTime.UtcNow;
DateTime?localDateTime = DateTime.Now;
DateTime?unspecifiedDateTime = new DateTime(DateTime.UtcNow.Ticks, DateTimeKind.Unspecified);
// Act
var actual1 = systemUnderTest.Equals(utcDateTime, utcDateTime);
var actual2 = systemUnderTest.Equals(localDateTime, localDateTime);
var actual3 = systemUnderTest.Equals(unspecifiedDateTime, unspecifiedDateTime);
// 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 NullableDateTimeEqualityComparer();
DateTime?item1a = null;
DateTime?item1b = DateTime.UtcNow;
DateTime?item2a = DateTime.Now;
DateTime?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 Equals___Should_return_false___When_item1_and_item2_have_the_same_Ticks_but_different_Kind()
{
// Arrange
var systemUnderTest = new NullableDateTimeEqualityComparer();
DateTime?utcDateTime = DateTime.UtcNow;
DateTime?localDateTime = new DateTime(((DateTime)utcDateTime).Ticks, DateTimeKind.Local);
DateTime?unspecifiedDateTime = new DateTime(((DateTime)utcDateTime).Ticks, DateTimeKind.Unspecified);
// Act
var actual1 = systemUnderTest.Equals(utcDateTime, localDateTime);
var actual2 = systemUnderTest.Equals(utcDateTime, unspecifiedDateTime);
var actual3 = systemUnderTest.Equals(localDateTime, unspecifiedDateTime);
// Assert
actual1.Should().BeFalse();
actual2.Should().BeFalse();
actual3.Should().BeFalse();
}
public static void Equals___Should_return_true___When_item1_and_item2_are_null()
{
// Arrange
var systemUnderTest = new NullableDateTimeEqualityComparer();
DateTime?item1 = null;
DateTime?item2 = null;
// Act
var actual = systemUnderTest.Equals(item1, item2);
// Assert
actual.Should().BeTrue();
}
public static void Equals___Should_return_true___When_item1_and_item2_have_the_same_Ticks_and_same_Kind()
{
// Arrange
var systemUnderTest = new NullableDateTimeEqualityComparer();
DateTime?item1a = DateTime.UtcNow;
DateTime?item1b = new DateTime(((DateTime)item1a).Ticks, ((DateTime)item1a).Kind);
DateTime?item2a = DateTime.Now;
DateTime?item2b = new DateTime(((DateTime)item2a).Ticks, ((DateTime)item2a).Kind);
DateTime?item3a = new DateTime(DateTime.UtcNow.Ticks, DateTimeKind.Unspecified);
DateTime?item3b = new DateTime(((DateTime)item3a).Ticks, ((DateTime)item3a).Kind);
// Act
var actual1 = systemUnderTest.Equals(item1a, item1b);
var actual2 = systemUnderTest.Equals(item2a, item2b);
var actual3 = systemUnderTest.Equals(item3a, item3b);
// Assert
actual1.Should().BeTrue();
actual2.Should().BeTrue();
actual3.Should().BeTrue();
}