### Question:
BufferConfigSource extends AbstractConfigSource { @Override public Reader getReader() throws IOException { return new StringReader(content); } BufferConfigSource(final String content);  BufferConfigSource(final String content, final Location location); @Override Reader getReader(); @Override Location getLocation();  }### Answer:
@Test public void testGetReader() throws IOException { final Reader reader = source.getReader(); assertNotNull(reader); assertTrue((reader instanceof StringReader)); }