ci: add unit test workflow and package setup for ldapsm

- Add GitHub Actions workflow to run make test
- Introduce pyproject.toml with python-ldap dependency and CLI entrypoint
- Add Makefile with install/test/clean targets
- Move tests to src-based package layout and fix imports
- Remove legacy requirements.yml

https://chatgpt.com/share/695d2615-d664-800f-b821-5705c631bfe8

tests/unit/test_manage_schema.py

@@ -0,0 +1,98 @@
+import sys
+import unittest
+from unittest.mock import MagicMock, patch
+
+import ldapsm.__main__ as manage_schema
+
+
+class TestManageSchema(unittest.TestCase):
+    def test_normalize_removes_extra_whitespace(self):
+        input_data = b'  ( 1.2.3.4  NAME   \'foo\' \n DESC \t "bar" )  '
+        expected = b'( 1.2.3.4 NAME \'foo\' DESC "bar" )'
+        self.assertEqual(manage_schema.normalize(input_data), expected)
+
+    def test_extract_oid_from_definition(self):
+        ldif = "( 1.3.6.1.4.1.99999.1 NAME 'example' DESC 'something' )"
+        oid = manage_schema.extract_oid(ldif)
+        self.assertEqual(oid, "1.3.6.1.4.1.99999.1")
+
+    @patch("ldapsm.__main__.ldap.initialize")
+    def test_add_new_object_class_no_double_add(self, mock_ldap_init):
+        mock_conn = MagicMock()
+        mock_ldap_init.return_value = mock_conn
+
+        schema_name = "nextcloud"
+        ocdef = "( 1.3.6.1.4.1.99999.2 NAME 'nextcloudUser' DESC 'Auxiliary class' AUXILIARY MAY ( nextcloudQuota ) )"
+        encoded = ocdef.encode()
+
+        mock_conn.search_s.side_effect = [
+            [(f"cn={{0}}{schema_name},cn=schema,cn=config", {"dn": [b"dummy"]})],
+            [(f"cn={{0}}{schema_name},cn=schema,cn=config", {"olcObjectClasses": [encoded]})],
+        ]
+
+        with patch.object(
+            sys,
+            "argv",
+            [
+                "ldapsm",
+                "-s",
+                "ldap://localhost",
+                "-D",
+                "cn=admin,dc=example,dc=org",
+                "-W",
+                "secret",
+                "-n",
+                schema_name,
+                "-c",
+                ocdef,
+            ],
+        ):
+            manage_schema.main()
+
+        mock_conn.modify_s.assert_not_called()
+
+    @patch("ldapsm.__main__.ldap.initialize")
+    def test_replace_attribute_type_same_oid(self, mock_ldap_init):
+        mock_conn = MagicMock()
+        mock_ldap_init.return_value = mock_conn
+
+        schema_name = "nextcloud"
+        atdef = "( 1.3.6.1.4.1.99999.1 NAME 'nextcloudQuota' DESC 'Quota for Nextcloud' SYNTAX 1.3.6.1.4.1.1466.115.121.1.27 SINGLE-VALUE )"
+        encoded = atdef.encode()
+
+        existing_attr_old = b"( 1.3.6.1.4.1.99999.1 NAME 'nextcloudQuota' DESC 'Old desc' SYNTAX 1.3.6.1.4.1.1466.115.121.1.27 )"
+
+        mock_conn.search_s.side_effect = [
+            [(f"cn={{0}}{schema_name},cn=schema,cn=config", {"dn": [b"dummy"]})],
+            [(f"cn={{0}}{schema_name},cn=schema,cn=config", {"olcAttributeTypes": [existing_attr_old]})],
+        ]
+
+        with patch.object(
+            sys,
+            "argv",
+            [
+                "ldapsm",
+                "-s",
+                "ldap://localhost",
+                "-D",
+                "cn=admin,dc=example,dc=org",
+                "-W",
+                "secret",
+                "-n",
+                schema_name,
+                "-a",
+                atdef,
+            ],
+        ):
+            manage_schema.main()
+
+        mock_conn.modify_s.assert_called_once()
+        args, _kwargs = mock_conn.modify_s.call_args
+        self.assertIn("cn={0}nextcloud,cn=schema,cn=config", args[0])
+        self.assertEqual(args[1][0][0], manage_schema.ldap.MOD_REPLACE)
+        self.assertEqual(args[1][0][1], "olcAttributeTypes")
+        self.assertEqual(args[1][0][2], [encoded])
+
+
+if __name__ == "__main__":
+    unittest.main()