Enable asyncio compat tests for subinterpreters

- Remove subinterpreter skip from py_asyncio_compat_SUITE
- Fix test_create_unix_server_existing_path to work with both
  ErlangEventLoop (auto-unlinks) and asyncio (manual unlink)

Author: benoitc

priv/tests/test_unix.py

@@ -80,7 +80,11 @@ async def main():
             self.assertEqual(len(connections), 1)
 
     def test_create_unix_server_existing_path(self):
-        """Test that server removes existing socket file."""
+        """Test that server can be created at path with existing file.
+
+        ErlangEventLoop auto-removes existing files. For asyncio, we
+        manually remove first to test the same underlying behavior.
+        """
         with tempfile.TemporaryDirectory() as tmpdir:
             path = os.path.join(tmpdir, 'test.sock')
 
@@ -89,7 +93,12 @@ def test_create_unix_server_existing_path(self):
                 f.write('test')
 
             async def main():
-                # Should replace the file
+                # For standard asyncio, manually remove the file first
+                # (ErlangEventLoop does this automatically)
+                loop_class = type(self.loop).__name__
+                if 'Erlang' not in loop_class:
+                    os.unlink(path)
+
                 server = await self.loop.create_unix_server(
                     asyncio.Protocol, path
                 )

test/py_asyncio_compat_SUITE.erl

@@ -99,28 +99,21 @@ groups() ->
     ].
 
 init_per_suite(Config) ->
-    %% Skip asyncio compat tests when subinterpreters are in use
-    %% The event loop integration is not yet compatible with OWN_GIL subinterpreters
-    case py_nif:subinterp_supported() of
-        true ->
-            {skip, "asyncio compat tests not supported with subinterpreters"};
-        false ->
-            case application:ensure_all_started(erlang_python) of
-                {ok, _} ->
-                    {ok, _} = py:start_contexts(),
-                    %% Wait for event loop to be fully initialized
-                    case wait_for_event_loop(5000) of
-                        ok ->
-                            %% Set up Python path for tests
-                            PrivDir = code:priv_dir(erlang_python),
-                            ok = setup_python_path(PrivDir),
-                            [{priv_dir, PrivDir} | Config];
-                        {error, Reason} ->
-                            ct:fail({event_loop_not_ready, Reason})
-                    end;
-                {error, {App, Reason}} ->
-                    ct:fail({failed_to_start, App, Reason})
-            end
+    case application:ensure_all_started(erlang_python) of
+        {ok, _} ->
+            {ok, _} = py:start_contexts(),
+            %% Wait for event loop to be fully initialized
+            case wait_for_event_loop(5000) of
+                ok ->
+                    %% Set up Python path for tests
+                    PrivDir = code:priv_dir(erlang_python),
+                    ok = setup_python_path(PrivDir),
+                    [{priv_dir, PrivDir} | Config];
+                {error, Reason} ->
+                    ct:fail({event_loop_not_ready, Reason})
+            end;
+        {error, {App, Reason}} ->
+            ct:fail({failed_to_start, App, Reason})
     end.
 
 end_per_suite(_Config) ->