Drive the clock in the UDP no-progress test

2026-10-22 13:56:10 +00:00 · 2026-10-20 04:13:44 -10:00
1 changed files with 9 additions and 5 deletions
@@ -1779,14 +1779,18 @@ def test_udp_channel_no_progress_names_last_error() -> None:
    """Without refusals, the no-progress timeout names the last socket error."""
    sock = Mock()
    sock.send.side_effect = BlockingIOError(35, "full")
-    channel = espota2.UdpChannel(sock, b"\x01\x01\x01\x01")
-    channel.settimeout(0.2)
-    channel.sendall(b"x")
+    # A hand-driven clock, so a slow runner cannot pass the timeout before the first send
+    now = [100.0]
    with (
+        patch.object(espota2, "time", Mock(monotonic=lambda: now[0])),
        patch("select.select", return_value=([], [], [])),
-        pytest.raises(espota2.OTANetworkError, match="no progress.*full"),
    ):
-        while True:
+        channel = espota2.UdpChannel(sock, b"\x01\x01\x01\x01")
+        channel.settimeout(0.2)
+        channel.sendall(b"x")
+        channel._pump()
+        now[0] += 1.0
+        with pytest.raises(espota2.OTANetworkError, match="no progress.*full"):
            channel._pump()