### Question:
MultimapFileReader extends Reader { @Override public void close() throws IOException { reader.close(); } MultimapFileReader(BufferedReader reader); Map<String, List<String>> readMultimap(); @Override void close(); @Override int read(char[] cbuf, int off, int len);  }### Answer:
@Test public void testClose() throws Exception{ reader.close(); replay(reader); multimapFileReader.close(); verify(reader); }