public static void Equals_TwoDifferentStringsOfEqualLength_ReturnsTrue()
{
var comparer = new SelectorEqualityComparer <string, int>(s => s?.Length ?? 0);
var output = comparer.Equals("AAA", "BBB");
Assert.That(output, Is.True);
}
public static void GetHashCode_OfStringWithLength3_Returns3()
{
// This exploits the fact that the hash code of an Int32 is the Int32 itself.
var comparer = new SelectorEqualityComparer <string, int>(s => s?.Length ?? 0);
var output = comparer.GetHashCode("AAA");
Assert.That(output, Is.EqualTo(3));
}
public void CTor()
{
// Arrange: Declare any variables or set up any conditions
// required by your test.
// Act: Perform the activity under test.
var comparer = new SelectorEqualityComparer<Entity>(e => e.Id);
// Assert: Verify that the activity under test had the
// expected results
}
public void Equals_WhenIdsDoNotMatch_ShouldReturnFalse()
{
// Arrange: Declare any variables or set up any conditions
// required by your test.
var x = new Entity() { Id = 1, Description = "One" };
var y = new Entity() { Id = 2, Description = "Two" };
var comparer = new SelectorEqualityComparer<Entity>(e => e.Id);
// Act: Perform the activity under test.
var result = comparer.Equals(x, y);
// Assert: Verify that the activity under test had the
// expected results
Assert.That(result, Is.False);
}
