CheckCellTests.LCSTests.TypoTest C# (CSharp) Method

        public void TypoTest()
        {
            var s1 = "abcd";
            var s2 = "zdcd";

            var ss = LongestCommonSubsequence.LeftAlignedLCS(s1, s2);
            var typos = LongestCommonSubsequence.GetTypos(ss, s1, s2);

            OptChar[] keys = { OptChar.None, new OptChar('a'), new OptChar('b'), new OptChar('c'), new OptChar('d') };
            char[] values = { 'z', 'd', 'c', 'd' };

            var key_hs = new System.Collections.Generic.HashSet<OptChar>(keys);
            var value_hs = new System.Collections.Generic.HashSet<char>(values);

            var keys_seen = new System.Collections.Generic.HashSet<OptChar>();
            var values_seen = new System.Collections.Generic.HashSet<char>(); ;
            foreach (var typo in typos)
            {
                var key = typo.Item1;
                var str = typo.Item2;
                keys_seen.Add(key);
                foreach (char c in str)
                {
                    values_seen.Add(c);
                }
            }

            Assert.AreEqual(true, key_hs.SetEquals(keys_seen));
            Assert.AreEqual(true, value_hs.SetEquals(values_seen));
        }