public void TestTransformWord() { var classifier = new BayesianClassifier(); Assert.IsFalse(classifier.IsCaseSensitive); string word = null; try { classifier.TransformWord(word); Assert.Fail("No exception thrown when null passed."); } catch {} word = "myWord"; Assert.AreEqual(word.ToLower(), classifier.TransformWord(word)); classifier.IsCaseSensitive = true; Assert.AreEqual(word, classifier.TransformWord(word)); }