public void ReturnTrueAndMatchMessage_WhenArgumentIsStringAndTypeIsString()
{
// Arrange.
Type type = typeof(string);
InstanceOfTypeValidationPredicate<string> validationPredicate = new InstanceOfTypeValidationPredicate<string>(type);
// Act.
IValidationPredicateResult result = validationPredicate.Match("asdf");
// Assert.
Assert.IsTrue(result.IsMatch);
Assert.AreEqual("The argument is instance of type <System.String>.", result.Message);
}