public IEnumerator <string> GetStringsContaining(string chars)
{
if (chars == null || chars == "")
{
return(rowset.GetEnumerator());
}
IStringFilter resultSet = new StringFilter();
foreach (string elem in rowset)
{
if (elem.Contains(chars))
{
resultSet.Add(elem);
}
}
return(resultSet.GetCollection().GetEnumerator());
}
public static bool TestAdd()
{
//arrange
ISet <string> forActual = new HashSet <string>();
forActual.Add("abcde");
IStringFilter actual = new StringFilter(forActual);
ISet <string> forExpected = new HashSet <string>();
forExpected.Add("abcde");
forExpected.Add("gg");
IStringFilter expected = new StringFilter(forExpected);
//act
actual.Add("gg");
//assert
return(IsEqualSet(actual.GetCollection(), expected.GetCollection()));
}