Make 3.8 happy by removing newer type constructs in tests/doq.py.

diff --git a/tests/doq.py b/tests/doq.py
index 5e052bfa5746b90607fd062563b000f7ffe7297b..e8b9bfef675e4ee607021da9c3cc3dbfdab8cdec 100644 (file)
--- a/tests/doq.py
+++ b/tests/doq.py
@@ -5,7 +5,7 @@
 import secrets
 import struct
 import time
-from typing import Optional
+from typing import Optional, Set, Tuple, Union
 
 import aioquic
 import aioquic.buffer
@@ -44,7 +44,7 @@ class Stream:
             self.expecting = 0
 
     async def receive(self, timeout: Optional[float] = None):
-        context: trio.CancelScope | NullContext
+        context: Union[trio.CancelScope, NullContext]
         if timeout is None:
             context = NullContext(None)
         else:
@@ -95,7 +95,7 @@ class Connection:
     def __init__(self, listener, cid, peer, retry_cid=None):
         self.original_cid: bytes = cid
         self.listener = listener
-        self.cids: set[bytes] = set()
+        self.cids: Set[bytes] = set()
         self.cids.add(cid)
         self.listener.connections[cid] = self
         self.peer = peer
@@ -116,7 +116,7 @@ class Connection:
         self.worker_scope = None
         self.streams = {}
 
-    def get_timer_values(self, now: float) -> tuple[float, float]:
+    def get_timer_values(self, now: float) -> Tuple[float, float]:
         expiration = self.quic_connection.get_timer()
         if expiration is None:
             expiration = now + 3600  # arbitrary "big" value