Add tests (#1433)

* Add tests for remove_route()

* Add tests for sanic/router.py

* Add tests for sanic/cookies.py

* Disable reset logging in test_logging.py

* Add tests for sanic/request.py

* Add tests for ContentRangeHandler

* Add tests for exception at response middleware

* Fix cached_handlers for ErrorHandler.lookup()

* Add test for websocket request timeout

* Add tests for getting cookies of StreamResponse, Remove some unused variables in tests/test_cookies.py

* Add tests for nested error handle

tests/test_logging.py

@@ -125,7 +125,7 @@ def test_logger(caplog):
 
 
 def test_logging_modified_root_logger_config():
-    reset_logging()
+    # reset_logging()
 
     modified_config = LOGGING_CONFIG_DEFAULTS
     modified_config['loggers']['sanic.root']['level'] = 'DEBUG'