fix(test): make HookBackendTestCase abstract with test_git

Converted `HookBackendTestCase` to an abstract class by adding the `ABC` base and `abstractmethod`. Standardized `test_git` method across test cases to enforce implementation in subclasses.

weblate/trans/tests/test_hooks.py

@@ -5,6 +5,7 @@
 """Test for notification hooks."""
 
 import json
+from abc import ABC, abstractmethod
 from unittest.mock import patch
 
 from django.test import SimpleTestCase
@@ -1582,7 +1583,7 @@ def test_hook_pagure(self) -> None:
         self.assertContains(response, "Hook working", status_code=201)
 
 
-class HookBackendTestCase(SimpleTestCase):
+class HookBackendTestCase(SimpleTestCase, ABC):
     hook: str = ""
 
     def assert_hook(self, payload, expected) -> None:
@@ -1595,6 +1596,10 @@ def assert_hook(self, payload, expected) -> None:
         self.maxDiff = None
         self.assertEqual(expected, result)
 
+    @abstractmethod
+    def test_git(self):
+        raise NotImplementedError
+
 
 class GitHubBackendTest(HookBackendTestCase):
     hook = "github"
@@ -1867,7 +1872,7 @@ def test_git_old(self) -> None:
             },
         )
 
-    def test_git_new(self) -> None:
+    def test_git(self) -> None:
         self.assert_hook(
             AZURE_PAYLOAD_NEW,
             {