private string GetGatedUnitWord(ExpandedDigits digits)
{
if (digits.IsTeenNumber() || MultiDigitNumberEndingWithZero(digits))
{
return(NumberNotFound);
}
return(GetUnitsWord(digits.Units));
}
public void IsTeenNumber_WhenIs20_ShouldReturnFalse()
{
//---------------Arrange-------------------
var sut = new ExpandedDigits
{
Tens = 2,
Units = 0
};
//---------------Act----------------------
var actual = sut.IsTeenNumber();
//---------------Assert-----------------------
actual.Should().BeFalse();
}
public void IsTeenNumber_WhenIs11Through19_ShouldReturnTrue(int tens, int units)
{
//---------------Arrange-------------------
var sut = new ExpandedDigits
{
Tens = tens,
Units = units
};
//---------------Act----------------------
var actual = sut.IsTeenNumber();
//---------------Assert-----------------------
actual.Should().BeTrue();
}
private string GetTensWord(ExpandedDigits digits)
{
if (digits.Tens == 0)
{
return(NumberNotFound);
}
if (digits.IsTeenNumber())
{
return(GetTeenNumberWord(digits));
}
return(GetTensDigitWord(digits));
}