public void Test_Classifier_When_Text_Is_Negative2()
        {
            var positiveText = "I love sunny days";
            var negativeText = "I hate rain";
            var learner      = new TweetLearner();
            var learnLove    = learner.Learn(LearnerState.Empty, new Sentence(positiveText, WordCategory.Positive));
            var testLearner  = learner.Learn(learnLove, new Sentence(negativeText, WordCategory.Negative));
            var classifier   = new TweetClassifier();
            var testResult   = classifier.Classify("there will be rain", testLearner);

            testResult.Sentence.Category.Should().Be(WordCategory.Negative);
        }
        public void Test_Classifier_When_Text_Is_Positive()
        {
            var positiveText = "I love F#";
            var negativeText = "I hate java";
            var learner      = new TweetLearner();
            var learnLove    = learner.Learn(LearnerState.Empty, new Sentence(positiveText, WordCategory.Positive));
            var testLearner  = learner.Learn(learnLove, new Sentence(negativeText, WordCategory.Negative));
            var classifier   = new TweetClassifier();
            var testResult   = classifier.Classify("My brother love F#", testLearner);

            testResult.Sentence.Category.Should().Be(WordCategory.Positive);
        }