public void TestToString(string inputString, IsbnFormat format, string expectedResult)
{
var isbn = new Isbn(inputString);
var actualResult = isbn.ToString(format);
Assert.AreEqual(expectedResult, actualResult);
}
public string ToString(IsbnFormat format)
{
var separator = HasFlag(format, IsbnFormat.IncludeHyphens)
? HyphenString
: string.Empty;
var isbnString = string.Join(separator, _parts);
if (HasFlag(format, IsbnFormat.IncludePrefix))
{
isbnString = Prefix + isbnString;
}
return(isbnString);
}
private bool HasFlag(IsbnFormat format, IsbnFormat flag)
{
return((format & flag) == flag);
}
