public void Inheritence()
            {
                var validator = new FirstNameCannotBeGreaterThanTwentyFive();

                validator.Should().NotBeNull();
                validator.Should().BeAssignableTo <ISpecification <Person> >();
                validator.Should().BeAssignableTo <GenericSpecification <Person> >();
                validator.Should().BeOfType <FirstNameCannotBeGreaterThanTwentyFive>();
            }
 public MethodsTests()
 {
     validator = new FirstNameCannotBeGreaterThanTwentyFive();
 }