public void ThrowsArgumentNullExceptionIfFuncIsNull()
{
ExceptionTester.CallMethodAndExpectException<ArgumentException>(() => Argument.IsValid("myParam", "value", (Func<string, bool>)null));
ExceptionTester.CallMethodAndExpectException<ArgumentException>(() => Argument.IsValid("myParam", (string)null, (Func<string, bool>)null));
}