fix(sync): deactivate resume callbacks when waits end

playwright/_impl/_greenlets.py

@@ -94,12 +94,14 @@ def wait_for_future(
 ) -> None:
     __tracebackhide__ = True
     g_self = greenlet.getcurrent()
+    waiting = True
 
     def resume(_: "asyncio.Future") -> None:
-        g_self.switch()
+        if waiting:
+            g_self.switch()
 
     # The wait owns the callback that resumes this greenlet, so that it can
-    # remove it again when the wait is abandoned. A callback left behind would
+    # remove it again when the wait ends. A callback left behind would
     # resume this greenlet at an arbitrary later point.
     future.add_done_callback(resume)
     try:
@@ -118,6 +120,10 @@ def resume(_: "asyncio.Future") -> None:
         future.cancel()
         raise
     finally:
+        # A done future has already queued its callbacks; removing them from the
+        # future cannot stop them, so also make a queued callback inactive.
+        waiting = False
+        future.remove_done_callback(resume)
         # The loop is only running for as long as the dispatcher fiber is alive.
         # Also after a signal handler interrupted it: run_forever() cleared this
         # on its way out, but the dispatcher is going to run the loop again.

tests/sync/python/test_sync.py

@@ -186,6 +186,9 @@ def _test_call_sync_method_after_playwright_close_with_own_loop(
     context = browser.new_context()
     page = context.new_page()
     page.goto(empty_page)
+    with page.expect_console_message(lambda m: m.text == "hello") as console_info:
+        page.evaluate("console.log('hello')")
+    assert console_info.value.text == "hello"
     playwright.stop()
     with pytest.raises(Error) as exc:
         page.evaluate("1+1")
@@ -196,6 +199,7 @@ def _test_call_sync_method_after_playwright_close_with_own_loop(
 def test_call_sync_method_after_playwright_close_with_own_loop(
     server: Server, browser_name: str, launch_arguments: Dict[str, Any]
 ) -> None:
+    # Regression test for https://github.com/microsoft/playwright-python/issues/3307.
     p = multiprocessing.get_context("spawn").Process(
         target=_test_call_sync_method_after_playwright_close_with_own_loop,
         args=[browser_name, launch_arguments, server.EMPTY_PAGE],