public void FilterDigit1()
{
FilterDigit fil = new FilterDigit();
List <int> one = new List <int> {
7, 1, 2, 3, 4, 5, 6, 7, 68, 69, 70, 15, 17
};
List <int> res = new List <int> {
7, 70, 17
};
Assert.AreEqual(res, fil.FilDig(one));
}