end_to_end_test.py 文件源码

def test_all_correct_contents(self):
    """Tests that the content of all non-static output files is expected."""
    for dirname, _, filenames in os.walk(TTS_REFERENCE_PATH):
      for filename in filenames:
        if filename == caterpillar.SW_SCRIPT_NAME:
          # Service worker is partly random, so test it elsewhere.
          continue

        reference_path = os.path.join(dirname, filename)
        relpath = os.path.relpath(reference_path, TTS_REFERENCE_PATH)

        if not (relpath.startswith(self.boilerplate_dir)
                or relpath.startswith(self.report_dir)):
          output_path = os.path.join(self.output_dir, relpath)
          with open(reference_path) as reference_file:
            with open(output_path) as output_file:
              output_data = output_file.read().decode('utf-8')
              reference_data = reference_file.read().decode('utf-8')
              self.assertEqual(output_data, reference_data,
                  'Difference found in file `{}`.\n{}'.format(relpath,
                      '\n'.join(difflib.unified_diff(
                          output_data.split('\n'),
                          reference_data.split('\n'),
                          fromfile=reference_path,
                          tofile=output_path,
                          n=0))))