source: class LibraryProcessorTest {
  
      @Test
      public void testProcess() throws SAXException, IOException {
  
target:         LibraryProcessor processor = new LibraryProcessor();
          StringWriter statsWriter = new StringWriter();
          processor.run(getClass().getResourceAsStream("/books.xml"), getClass().getResourceAsStream("/sales.xml"),
                  statsWriter);
          XMLAssert.assertXMLEqual(new InputSource(getClass().getResourceAsStream("/stats-ref.xml")),
                  new InputSource(new StringReader(statsWriter.toString())));
      }
  
  }