do not require return statement anymore (#2)

Author: DerThorsten

pyjs_code_runner/backend/node/node_main.js

@@ -72,7 +72,10 @@ _async_done_ = [False]
 _ret_code = [0]
 async def main_runner():
     try:
-        _ret_code[0] = await main()
+        ret = await main()
+        if ret is None:
+            ret = 0
+        _ret_code[0] = ret
     except Exception as e:
         _ret_code[0] = 1
         print("EXCEPTION",e)

pyjs_code_runner/js/utils.js

@@ -43,7 +43,10 @@ _async_done_ = [False]
 _ret_code = [0]
 async def main_runner():
     try:
-        _ret_code[0] = await main()
+        ret = await main()
+        if ret is None:
+            ret = 0
+        _ret_code[0] = ret
     except Exception as e:
         _ret_code[0] = 1
         print("EXCEPTION",e)

test/test_cli.py

@@ -44,13 +44,11 @@ def test_sync_err(
         result = runner.invoke(app, cli_args)
         assert result.exit_code == 1
 
-    @pytest.mark.parametrize("execution_number", range(1))
     def test_async_error(
         self,
         env_prefix,
         em_work_dir,
         backend_cli_settings,
-        execution_number,
         tmpdir,
         runner,
     ):
@@ -111,27 +109,35 @@ def test_sync_hello_world(
         assert result.exit_code == 0
         assert "hello world" in result.stdout
 
-    @pytest.mark.parametrize("execution_number", range(1))
+    @pytest.mark.parametrize("with_return", [False, True])
     def test_async_hello_world(
         self,
         env_prefix,
         em_work_dir,
         backend_cli_settings,
-        execution_number,
+        with_return,
         tmpdir,
         runner,
     ):
         to_mount_dir = tmpdir
         cli_mount = f"{str(tmpdir)}:{str(em_work_dir)}"
         backend_type, backend_args = backend_cli_settings
 
-        main_content = """\n
-            import asyncio
-            async def main():
-                await asyncio.sleep(1)
-                print('hello world')
-                return 0
-        """
+        if with_return:
+            main_content = """\n
+                import asyncio
+                async def main():
+                    await asyncio.sleep(1)
+                    print('hello world')
+                    return 0
+            """
+        else:
+            main_content = """\n
+                import asyncio
+                async def main():
+                    await asyncio.sleep(1)
+                    print('hello world')
+            """
         write_main(to_mount_dir, main_content)
 
         # fmt: off