tests/integration: Automate manual no_services test

tests/integration/no_services/test_podman_compose_no_services.py

@@ -0,0 +1,49 @@
+# SPDX-License-Identifier: GPL-2.0
+
+import os
+import unittest
+
+from tests.integration.test_utils import RunSubprocessMixin
+from tests.integration.test_utils import podman_compose_path
+from tests.integration.test_utils import test_path
+
+
+def compose_yaml_path():
+    return os.path.join(os.path.join(test_path(), "no_services"), "docker-compose.yaml")
+
+
+class TestComposeNoServices(unittest.TestCase, RunSubprocessMixin):
+    # test if a network was created, but not the services
+    def test_no_services(self):
+        try:
+            output, return_code = self.run_subprocess_assert_returncode(
+                [
+                    podman_compose_path(),
+                    "-f",
+                    compose_yaml_path(),
+                    "up",
+                    "-d",
+                ],
+            )
+            self.assertEqual(
+                b'WARNING:__main__:WARNING: unused networks: shared-network\n', return_code
+            )
+
+            container_id, _ = self.run_subprocess_assert_returncode([
+                podman_compose_path(),
+                "-f",
+                compose_yaml_path(),
+                "ps",
+                "--format",
+                '{{.ID}}',
+            ])
+            self.assertEqual(container_id, b"")
+        finally:
+            self.run_subprocess_assert_returncode([
+                podman_compose_path(),
+                "-f",
+                compose_yaml_path(),
+                "down",
+                "-t",
+                "0",
+            ])