### Question:
EtutorCVSReader { public static List<String> readUNummer(BufferedReader reader) throws IOException { final List<String> uNummern = new ArrayList<>(); String line; while ((line = reader.readLine()) != null) { String[] record = line.split(CVS_SPLIT_BY); if(record.length > 0 && record[0].toUpperCase().startsWith("U")){ uNummern.add(record[0]); } else{ LOGGER.info("Line doesn't start with an 'u-nummer': {}", line); } } return uNummern; }  static List<String> readUNummer(BufferedReader reader);  }### Answer:
@Test public void testReadUNummer() throws IOException { final URL url = this.getClass().getResource(TEST_ETUTOR_EXPORT); BufferedReader bufferedReader = new BufferedReader(new FileReader(new File(url.getFile()))); List<String> uNummern = EtutorCVSReader.readUNummer(bufferedReader); bufferedReader.close(); Assert.assertNotNull(uNummern); }