Move alist helper outside of asyncio test package.

Author: aaugustin

tests/asyncio/test_connection.py

@@ -19,9 +19,8 @@
 from websockets.protocol import CLIENT, SERVER, Protocol, State
 
 from ..protocol import RecordingProtocol
-from ..utils import MS
+from ..utils import MS, alist
 from .connection import InterceptingConnection
-from .utils import alist
 
 
 # Connection implements symmetrical behavior between clients and servers.

tests/asyncio/test_messages.py

@@ -8,7 +8,7 @@
 from websockets.exceptions import ConcurrencyError
 from websockets.frames import OP_BINARY, OP_CONT, OP_TEXT, Frame
 
-from .utils import alist
+from ..utils import alist
 
 
 class SimpleQueueTests(unittest.IsolatedAsyncioTestCase):

tests/asyncio/test_router.py

@@ -8,9 +8,8 @@
 from websockets.asyncio.router import *
 from websockets.exceptions import InvalidStatus
 
-from ..utils import CLIENT_CONTEXT, SERVER_CONTEXT, temp_unix_socket_path
+from ..utils import CLIENT_CONTEXT, SERVER_CONTEXT, alist, temp_unix_socket_path
 from .server import EvalShellMixin, get_uri, handler
-from .utils import alist
 
 
 try:

tests/asyncio/utils.py

@@ -112,6 +112,13 @@ def assertDeprecationWarning(self, message):
         self.assertEqual(str(warning.message), message)
 
 
+async def alist(async_iterable):
+    items = []
+    async for item in async_iterable:
+        items.append(item)
+    return items
+
+
 @contextlib.contextmanager
 def temp_unix_socket_path():
     with tempfile.TemporaryDirectory() as temp_dir: