Implemented filter functions to get roles by application_id

tests/unit/filter_plugins/test_role_path_by_app_id.py

@@ -0,0 +1,80 @@
+import os
+import tempfile
+import shutil
+import yaml
+import unittest
+
+from ansible.errors import AnsibleFilterError
+from filter_plugins.role_path_by_app_id import (
+    abs_role_path_by_application_id,
+    rel_role_path_by_application_id,
+)
+
+
+def write_vars_file(base_dir, role_name, app_id):
+    """
+    Helper to create roles/<role_name>/vars/main.yml with application_id
+    """
+    role_vars_dir = os.path.join(base_dir, 'roles', role_name, 'vars')
+    os.makedirs(role_vars_dir, exist_ok=True)
+    file_path = os.path.join(role_vars_dir, 'main.yml')
+    with open(file_path, 'w') as f:
+        yaml.safe_dump({'application_id': app_id}, f)
+    return file_path
+
+
+class TestRolePathByApplicationId(unittest.TestCase):
+    def setUp(self):
+        # Create temporary directory for each test and switch cwd
+        self.tmp_dir = tempfile.mkdtemp()
+        self.prev_cwd = os.getcwd()
+        os.chdir(self.tmp_dir)
+
+    def tearDown(self):
+        # Restore cwd and clean up
+        os.chdir(self.prev_cwd)
+        shutil.rmtree(self.tmp_dir)
+
+    def test_abs_single_match(self):
+        write_vars_file(self.tmp_dir, 'role_one', 'app123')
+        write_vars_file(self.tmp_dir, 'role_two', 'other_id')
+        result = abs_role_path_by_application_id('app123')
+        expected = os.path.abspath(os.path.join(self.tmp_dir, 'roles', 'role_one'))
+        self.assertEqual(result, expected)
+
+    def test_rel_single_match(self):
+        write_vars_file(self.tmp_dir, 'role_one', 'app123')
+        write_vars_file(self.tmp_dir, 'role_two', 'other_id')
+        result = rel_role_path_by_application_id('app123')
+        expected = os.path.relpath(os.path.join(self.tmp_dir, 'roles', 'role_one'), self.tmp_dir)
+        self.assertEqual(result, expected)
+
+    def test_abs_no_match(self):
+        write_vars_file(self.tmp_dir, 'role_one', 'app123')
+        with self.assertRaises(AnsibleFilterError) as cm:
+            abs_role_path_by_application_id('nonexistent')
+        self.assertIn("No role found with application_id='nonexistent'", str(cm.exception))
+
+    def test_rel_no_match(self):
+        write_vars_file(self.tmp_dir, 'role_one', 'app123')
+        with self.assertRaises(AnsibleFilterError) as cm:
+            rel_role_path_by_application_id('nonexistent')
+        self.assertIn("No role found with application_id='nonexistent'", str(cm.exception))
+
+    def test_abs_multiple_match(self):
+        write_vars_file(self.tmp_dir, 'role_one', 'dup_id')
+        write_vars_file(self.tmp_dir, 'role_two', 'dup_id')
+        with self.assertRaises(AnsibleFilterError) as cm:
+            abs_role_path_by_application_id('dup_id')
+        self.assertIn("Multiple roles found with application_id='dup_id'", str(cm.exception))
+
+    def test_rel_multiple_match(self):
+        write_vars_file(self.tmp_dir, 'role_one', 'dup_id')
+        write_vars_file(self.tmp_dir, 'role_two', 'dup_id')
+        with self.assertRaises(AnsibleFilterError) as cm:
+            rel_role_path_by_application_id('dup_id')
+        self.assertIn("Multiple roles found with application_id='dup_id'", str(cm.exception))
+
+
+if __name__ == '__main__':
+    unittest.main()