Added additional unit test to debug html edge cas

roles/srv-web-7-7-certbot/vars/main.yml

@@ -1 +0,0 @@
-application_id: certbot

tests/unit/filter_plugins/test_applications_filter_for_html.py

@@ -0,0 +1,56 @@
+import os
+import yaml
+import unittest
+from filter_plugins.applications_if_group_and_deps import FilterModule
+
+
+def load_vars(role_name):
+    # locate project root relative to this test file
+    tests_dir = os.path.dirname(__file__)
+    project_root = os.path.abspath(os.path.join(tests_dir, '..', '..', '..'))
+    vars_path = os.path.join(project_root, 'roles', role_name, 'vars', 'main.yml')
+    with open(vars_path) as f:
+        data = yaml.safe_load(f) or {}
+    return data
+
+
+class TestApplicationsIfGroupAndDeps(unittest.TestCase):
+    def setUp(self):
+        self.filter = FilterModule().applications_if_group_and_deps
+        self.sample_apps = {
+            'html': {},
+            'legal': {},
+            'file': {},
+            'asset': {},
+            'portfolio': {},
+            'corporate-identity': {},
+        }
+
+    def test_direct_group(self):
+        result = self.filter(self.sample_apps, ['html'])
+        self.assertIn('html', result)
+        self.assertNotIn('legal', result)
+
+    def test_recursive_deps(self):
+        # html -> depends on none, but corporate-identity pulls in web-svc-legal -> web-svc-html -> legal
+        result = self.filter(self.sample_apps, ['util-srv-corporate-identity'])
+        self.assertIn('corporate-identity', result)
+        self.assertIn('legal', result)  # via web-svc-legal
+        self.assertIn('html', result)   # via web-svc-legal -> html
+
+    def test_real_vars_files(self):
+        # load real vars to get application_id
+        corp_vars = load_vars('util-srv-corporate-identity')
+        asset_vars = load_vars('web-svc-asset')
+        # ensure IDs exist
+        self.assertIn('application_id', corp_vars)
+        self.assertIn('application_id', asset_vars)
+        # run filter
+        result = self.filter(self.sample_apps, ['util-srv-corporate-identity'])
+        # ids from vars should appear
+        self.assertIn(corp_vars['application_id'], result)
+        self.assertIn(asset_vars['application_id'], result)
+
+
+if __name__ == '__main__':
+    unittest.main()