public void ReturnFalseAndUnmatchMessage_WhenArgumentIsFalse()
{
// Arrange.
bool value = false;
// Act.
IValidationPredicateResult result = TrueValidationPredicate.Instance.Match(value);
// Assert.
Assert.IsFalse(result.IsMatch);
Assert.AreEqual("The argument is false.", result.Message);
}
}