public void TestDiff()
{
var src = new [] { "abcde", "fghij", "klmno", "pqrst", "fguij", "axcye", "wvxyz" };
var result = cut.FindClosestMatch(src);
Assert.NotNull(result);
Assert.That(result.A[result.Position] != result.B[result.Position]);
Assert.That(result.A == "fghij");
Assert.That(result.B == "fguij");
Assert.That(result.Result == "fgij");
}