Python werkzeug.routing 模块，RuleTemplate() 实例源码

def test_rule_templates(self):
        testcase = r.RuleTemplate(
            [ r.Submount('/test/$app',
              [ r.Rule('/foo/', endpoint='handle_foo')
              , r.Rule('/bar/', endpoint='handle_bar')
              , r.Rule('/baz/', endpoint='handle_baz')
              ]),
              r.EndpointPrefix('${app}',
              [ r.Rule('/${app}-blah', endpoint='bar')
              , r.Rule('/${app}-meh', endpoint='baz')
              ]),
              r.Subdomain('$app',
              [ r.Rule('/blah', endpoint='x_bar')
              , r.Rule('/meh', endpoint='x_baz')
              ])
            ])

        url_map = r.Map(
            [ testcase(app='test1')
            , testcase(app='test2')
            , testcase(app='test3')
            , testcase(app='test4')
            ])

        out = sorted([(x.rule, x.subdomain, x.endpoint)
                      for x in url_map.iter_rules()])

        assert out == ([
            ('/blah', 'test1', 'x_bar'),
            ('/blah', 'test2', 'x_bar'),
            ('/blah', 'test3', 'x_bar'),
            ('/blah', 'test4', 'x_bar'),
            ('/meh', 'test1', 'x_baz'),
            ('/meh', 'test2', 'x_baz'),
            ('/meh', 'test3', 'x_baz'),
            ('/meh', 'test4', 'x_baz'),
            ('/test/test1/bar/', '', 'handle_bar'),
            ('/test/test1/baz/', '', 'handle_baz'),
            ('/test/test1/foo/', '', 'handle_foo'),
            ('/test/test2/bar/', '', 'handle_bar'),
            ('/test/test2/baz/', '', 'handle_baz'),
            ('/test/test2/foo/', '', 'handle_foo'),
            ('/test/test3/bar/', '', 'handle_bar'),
            ('/test/test3/baz/', '', 'handle_baz'),
            ('/test/test3/foo/', '', 'handle_foo'),
            ('/test/test4/bar/', '', 'handle_bar'),
            ('/test/test4/baz/', '', 'handle_baz'),
            ('/test/test4/foo/', '', 'handle_foo'),
            ('/test1-blah', '', 'test1bar'),
            ('/test1-meh', '', 'test1baz'),
            ('/test2-blah', '', 'test2bar'),
            ('/test2-meh', '', 'test2baz'),
            ('/test3-blah', '', 'test3bar'),
            ('/test3-meh', '', 'test3baz'),
            ('/test4-blah', '', 'test4bar'),
            ('/test4-meh', '', 'test4baz')
        ])