diff --git a/tests/test_context_stream_semantics.py b/tests/test_context_stream_semantics.py
index 1f5e3db..79df9fe 100644
--- a/tests/test_context_stream_semantics.py
+++ b/tests/test_context_stream_semantics.py
@@ -845,7 +845,10 @@ async def keep_sending_from_callee(
         ('caller', 1, never_open_stream),
         ('callee', 0, keep_sending_from_callee),
     ],
-    ids='overrun_condition={}'.format,
+    ids=[
+         ('caller_1buf_never_open_stream'),
+         ('callee_0buf_keep_sending_from_callee'),
+    ]
 )
 def test_one_end_stream_not_opened(
     overrun_by: tuple[str, int, Callable],
@@ -869,29 +872,30 @@ def test_one_end_stream_not_opened(
                 enable_modules=[__name__],
             )
 
-            async with portal.open_context(
-                entrypoint,
-            ) as (ctx, sent):
-                assert sent is None
+            with trio.fail_after(1):
+                async with portal.open_context(
+                    entrypoint,
+                ) as (ctx, sent):
+                    assert sent is None
 
-                if 'caller' in overrunner:
+                    if 'caller' in overrunner:
 
-                    async with ctx.open_stream() as stream:
+                        async with ctx.open_stream() as stream:
 
-                        # itersend +1 msg more then the buffer size
-                        # to cause the most basic overrun.
-                        for i in range(buf_size):
-                            print(f'sending {i}')
-                            await stream.send(i)
+                            # itersend +1 msg more then the buffer size
+                            # to cause the most basic overrun.
+                            for i in range(buf_size):
+                                print(f'sending {i}')
+                                await stream.send(i)
 
-                        else:
-                            # expect overrun error to be relayed back
-                            # and this sleep interrupted
-                            await trio.sleep_forever()
+                            else:
+                                # expect overrun error to be relayed back
+                                # and this sleep interrupted
+                                await trio.sleep_forever()
 
-                else:
-                    # callee overruns caller case so we do nothing here
-                    await trio.sleep_forever()
+                    else:
+                        # callee overruns caller case so we do nothing here
+                        await trio.sleep_forever()
 
             await portal.cancel_actor()