How to use the gabbi.reporter.ConciseTestRunner function in gabbi

# use gabbi to create the test suite from our declaration
        suite = test_suite_from_yaml(
            unittest.defaultTestLoader,
            self.id(),
            gabbi_declaration,
            '.',
            host,
            None,
            None,
            None,
        )

        # run the test (we store the the output into a custom stream so that hypothesis can display only the simple
        # case test result on failure rather than every failing case)
        s = StringIO()
        result = ConciseTestRunner(stream=s, verbosity=0).run(suite)

        # if we weren't successfull we need to fail the test case with the error string from gabbi
        if not result.wasSuccessful():
            self.fail(s.getvalue())

data['defaults']['cert_validate'] = False
        else:
            data['defaults'] = {'cert_validate': False}

    loader = unittest.defaultTestLoader
    test_suite = suitemaker.test_suite_from_dict(
        loader, name, data, data_dir, host, port, None, None, prefix=prefix,
        handlers=handler_objects, test_loader_name='gabbi-runner')

    # The default runner stream is stderr.
    stream = sys.stderr
    if quiet:
        # We want to swallow the output that the runner is
        # producing.
        stream = open(os.devnull, 'w')
    result = ConciseTestRunner(
        stream=stream, verbosity=2, failfast=failfast).run(test_suite)
    return result.wasSuccessful()