Attempt to fix test_stdin_broken_pipe on Travis (#7210)

diff --git a/Lib/test/test_asyncio/test_subprocess.py b/Lib/test/test_asyncio/test_subprocess.py
index 428510f771612509e2c6dc11590bf5dce42b755d..235813aa977c1e625cad5a3ba5e9a393e529a952 100644 (file)
--- a/Lib/test/test_asyncio/test_subprocess.py
+++ b/Lib/test/test_asyncio/test_subprocess.py
@@ -228,6 +228,7 @@ class SubprocessMixin:
         proc, large_data = self.prepare_broken_pipe_test()
 
         async def write_stdin(proc, data):
+            await asyncio.sleep(0.5, loop=self.loop)
             proc.stdin.write(data)
             await proc.stdin.drain()