public void TestAllNumbers() { var testCandidates = Directory.GetFiles(".//Output//DL//", "Computeractive UK Issue 438 - December 10, 2014.pdf", SearchOption.AllDirectories).ToList(); foreach (var item in testCandidates) { var mi = new MediaInfo(item); Assert.IsTrue(mi.ContainsAllNumbers("438")); Assert.IsTrue(mi.ContainsAllNumbers("408")); Assert.IsFalse(mi.ContainsAllNumbers("mp4")); Assert.IsFalse(mi.ContainsAllNumbers("m4o")); Assert.IsFalse(mi.ContainsAllNumbers("4pm")); Assert.IsFalse(mi.ContainsAllNumbers("4p4")); } }