public void OnlyDigitsCorrectLength_Passed()
        {
            var target = new ForeignPassportSeriesMaskRule("12");
            var result = target.Passed();

            Assert.IsTrue(result);
        }
        public void HasLetter_NotPassed()
        {
            var target = new ForeignPassportSeriesMaskRule("1a");
            var result = target.Passed();

            Assert.IsFalse(result);
        }
        public void WrongLength_NotPassed()
        {
            var target = new ForeignPassportSeriesMaskRule("123");
            var result = target.Passed();

            Assert.IsFalse(result);
        }