public void TestSearchExampleTest1Expect1()
        {
            string[] args = new[] { "the", "canal", "3", TestFileNameContents.Example1FileName };
            proximitySearch = new ProximitySearch(args);

            Assert.AreEqual(1, proximitySearch.Search());
        }
        public void TestSearchExampleTest1WithTwoIdenticalKeywords()
        {
            string[] args = new[] { "the", "the", "6", TestFileNameContents.Example1FileName };
            proximitySearch = new ProximitySearch(args);

            Assert.AreEqual(3, proximitySearch.Search());
        }
        public void TestSearchNewLineFileExpect3()
        {
            string[] args = new[] { "the", "canal", "6", TestFileNameContents.NewLinesFileName };
            proximitySearch = new ProximitySearch(args);

            Assert.AreEqual(3, proximitySearch.Search());
        }