Added warnings concerning application_id

tests/integration/test_application_id_matches_role_name.py

@@ -0,0 +1,51 @@
+import os
+import unittest
+import yaml
+import glob
+import warnings
+
+class TestApplicationIdMatchesRoleName(unittest.TestCase):
+    def test_application_id_matches_role_directory(self):
+        """
+        Warn if application_id in vars/main.yml does not match
+        the role directory basename, to avoid confusion.
+        If vars/main.yml is missing, do nothing.
+        """
+        # locate the 'roles' directory (two levels up)
+        base_dir = os.path.dirname(__file__)
+        roles_dir = os.path.abspath(os.path.join(base_dir, '..', '..', 'roles'))
+
+        # iterate over each role folder
+        for role_path in glob.glob(os.path.join(roles_dir, '*')):
+            if not os.path.isdir(role_path):
+                continue
+
+            role_name = os.path.basename(role_path)
+            vars_main = os.path.join(role_path, 'vars', 'main.yml')
+
+            # skip roles without vars/main.yml
+            if not os.path.exists(vars_main):
+                continue
+
+            with open(vars_main, 'r', encoding='utf-8') as f:
+                data = yaml.safe_load(f) or {}
+
+            app_id = data.get('application_id')
+            if app_id is None:
+                warnings.warn(
+                    f"{role_name}: 'application_id' is missing in vars/main.yml. "
+                    f"Consider setting it to '{role_name}' to avoid confusion."
+                )
+            elif app_id != role_name:
+                warnings.warn(
+                    f"{role_name}: 'application_id' is '{app_id}', "
+                    f"but the folder name is '{role_name}'. "
+                    "This can lead to confusion—using the directory name "
+                    "as the application_id is recommended."
+                )
+
+        # always pass
+        self.assertTrue(True)
+
+if __name__ == '__main__':
+    unittest.main()