public void ShouldBeInvalidWhenMoreThan8Digits()
{
var sut = new AirlineMembershipNumberValidator();
const string nineDigitNumber = "123456789";
Assert.That(sut.IsValid(nineDigitNumber), Is.False);
}
public void ShouldBeInvalidWhenLessThan8Digits()
{
var sut = new AirlineMembershipNumberValidator();
const string sevenDigitNumber = "1234567";
Assert.That(sut.IsValid(sevenDigitNumber), Is.False);
}
public void ShouldBeValidWhen8DigitsAndStartsWithLetter()
{
var sut = new AirlineMembershipNumberValidator();
Assert.That(sut.IsValid("A5522123"), Is.True);
}
public void ShouldBeInvalidWhenLast7DigitsNotAllNumbers()
{
var sut = new AirlineMembershipNumberValidator();
Assert.That(sut.IsValid("A552212A"), Is.False);
}
public void ShouldBeInvalidWhenBlank()
{
var sut = new AirlineMembershipNumberValidator();
Assert.That(sut.IsValid(""), Is.False);
}