1 files changed, 20 insertions, 0 deletions
diff --git a/Lib/test/test_asyncio/test_subprocess.py b/Lib/test/test_asyncio/test_subprocess.py
index 9bc60b9..7b7df40 100644
--- a/Lib/test/test_asyncio/test_subprocess.py
+++ b/Lib/test/test_asyncio/test_subprocess.py
@@ -427,6 +427,26 @@ class SubprocessMixin:
         self.assertEqual(output, None)
         self.assertEqual(exitcode, 0)
 
+    @unittest.skipIf(sys.platform != 'linux', "Don't have /dev/stdin")
+    def test_devstdin_input(self):
+
+        async def devstdin_input(message):
+            code = 'file = open("/dev/stdin"); data = file.read(); print(len(data))'
+            proc = await asyncio.create_subprocess_exec(
+                sys.executable, '-c', code,
+                stdin=asyncio.subprocess.PIPE,
+                stdout=asyncio.subprocess.PIPE,
+                stderr=asyncio.subprocess.PIPE,
+                close_fds=False,
+            )
+            stdout, stderr = await proc.communicate(message)
+            exitcode = await proc.wait()
+            return (stdout, exitcode)
+
+        output, exitcode = self.loop.run_until_complete(devstdin_input(b'abc'))
+        self.assertEqual(output.rstrip(), b'3')
+        self.assertEqual(exitcode, 0)
+
     def test_cancel_process_wait(self):
         # Issue #23140: cancel Process.wait()