QLC-2.4) Stubs to Mocks test

        [Test]
        public  void find_heighest_score_with_array_of_many_return_array_of_many_using_stub()
        {
            //[{“Physics”, { 56, 67, 45, 89} }, {“Art”, { 87, 66, 78} }, {“Comp Sci”, { 45, 88, 97, 56} }]
            // Arrange
            int[] physics_scores = { 56, 67, 45, 89 };
            string physics = "Physics";
            int[] art_scores = { 87, 66, 78 };
            string art = "Art";
            int[] compSci_scores = { 45, 88, 97, 56 };
            string compSci = "Comp Sci";
            TopicScores[] topicScores = { new TopicScores(physics, physics_scores),
                                          new TopicScores(art, art_scores),
                                          new TopicScores(compSci, compSci_scores)};

            // Setup your expectations
            IHighestNumberFinder hnf = Substitute.For<IHighestNumberFinder>();
            hnf.findHighestNumber(physics_scores).Returns(89);
            hnf.findHighestNumber(art_scores).Returns(87);
            hnf.findHighestNumber(compSci_scores).Returns(97);

            TopicManager cut = new TopicManager(hnf);

            TopicTopScore[] expectedResult = {  new TopicTopScore("Physics", 89), 
                                                new TopicTopScore("Art", 87), 
                                                new TopicTopScore("Comp Sci", 97) };

            // Act
            TopicTopScore[] result = cut.findTopicHighScores(topicScores);

            // Assert
            Assert.AreEqual(result[0].TopicName, expectedResult[0].TopicName);
            Assert.AreEqual(result[0].TopScore, expectedResult[0].TopScore);
            Assert.AreEqual(result[1].TopicName, expectedResult[1].TopicName);
            Assert.AreEqual(result[1].TopScore, expectedResult[1].TopScore);
            Assert.AreEqual(result[2].TopicName, expectedResult[2].TopicName);
            Assert.AreEqual(result[2].TopScore, expectedResult[2].TopScore);
        }