public void FormatiereSeiteTest()
        {
            CsvLogik logik = new CsvLogik();
            Tuple<string, IEnumerable<string>> input = new Tuple<string, IEnumerable<string>>("H1;H2;H3",
                                                                                                 new List<string>
                                                                                                     {
                                                                                                         "a;b;c",
                                                                                                         "d;e;f",
                                                                                                         "g;h;i",
                                                                                                         "j;k;l"
                                                                                                     });
            IEnumerable<string> expected = new string[] { "H1;H2;H3", "a;b;c", "d;e;f", "g;h;i", "j;k;l" };
            IEnumerable<string> actual = logik.Formatiere_Seite(input);

            CollectionAssert.AreEquivalent(expected.ToArray(), actual.ToArray());
        }
        public void MoreThanOnePageTest()
        {
            string[] input = new string[] { "H1;H2;H3", "a;b;c", "d;e;f", "g;h;i", "j;k;l", "m;n;o", "a;b;c", "d;e;f", "g;h;i", "j;k;l", "m;n;o", "a;b;c", "d;e;f", "g;h;i", "j;k;l", "m;n;o"};
            CsvLogik logik = new CsvLogik();
            var ergebnisTupel = logik.Ermittle_erste_Seitennummer(input);

            Tuple<string, IEnumerable<string>> actual = logik.Entnehme_Seite(ergebnisTupel);
            Tuple<string, IEnumerable<string>> expected = new Tuple<string, IEnumerable<string>>("H1;H2;H3",
                                                                                                 new List<string>
                                                                                                     {
                                                                                                         "a;b;c",
                                                                                                         "d;e;f",
                                                                                                         "g;h;i",
                                                                                                         "j;k;l",
                                                                                                         "m;n;o"
                                                                                                     });

            Assert.AreEqual(expected.Item1, actual.Item1);
            CollectionAssert.AreEquivalent(expected.Item2.ToList(), actual.Item2.ToList());
        }