reducing number of tooling tests to one (#37848)

* updated tooling tests to run single test

Closes #37848

COPYBARA_INTEGRATE_REVIEW=https://github.com/grpc/grpc/pull/37848 from sourabhsinghs:feature/python/tooling-tests 72199557e9
PiperOrigin-RevId: 695350627

src/python/grpcio_tests/tests/unit/test_all_modules_installed.py

@@ -0,0 +1,36 @@
+# Copyright 2024 gRPC authors.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+import logging
+import unittest
+
+
+class TestAllModulesInstalled(unittest.TestCase):
+    def test_import_all_modules(self):
+        import grpc_admin
+        import grpc_channelz
+        import grpc_csds
+        import grpc_csm_observability
+        import grpc_health
+        import grpc_observability
+        import grpc_reflection
+        import grpc_status
+
+        # This test simply imports all the modules.
+        # If any module fails to import, the test will fail.
+
+
+if __name__ == "__main__":
+    logging.basicConfig()
+    unittest.main(verbosity=3)

tools/distrib/python_tooling_tests.sh

@@ -18,11 +18,12 @@ set -ex
 BASEDIR=$(dirname "$0")/../..
 cd "$BASEDIR";
 
-# Run tests for grpcio_tests
+# the test module 
+TEST_MODULE="tests.unit.test_all_modules_installed" 
+
+# Run the specific test module
 pushd src/python/grpcio_tests;
-  python3 setup.py test_lite
+  python3 -m unittest "$TEST_MODULE" 
-  python3 setup.py test_aio
-  python3 setup.py test_py3_only
 popd;
 
 chmod -R 755 src/