public void ShouldCheckInstanceOfType()
        {
            Should.Throw<ArgumentNullException>(() => TestingExtensions.ShouldBeInstanceOfType<string>(null));

            "string".ShouldBeInstanceOfType<string>();
            Should.Throw<AssertionException>(() => DateTime.Now.ShouldBeInstanceOfType<string>());

            var childType = new ApplicationException();
            childType.ShouldBeInstanceOfType<Exception>();
        }