Upgrade test_normalization for django 4.1 and above

survey/tests/locale/test_locale_normalization.py

@@ -19,31 +19,32 @@ def test_normalization(self):
             python_3 = ["py", "-3"]
         else:
             python_3 = ["python3"]
-        makemessages_command = python_3 + [
-            "manage.py",
-            "makemessages",
-            "--no-obsolete",
-            "--no-wrap",
-            "--ignore",
-            "venv",
-        ]
+        base_command = ["manage.py", "makemessages", "--no-obsolete", "--no-wrap", "--ignore", "venv"]
+        makemessages_command = python_3 + base_command
         if django_version > "3.0":
             for x in settings.LANGUAGES:
                 if x[0] not in ["en"]:
                     makemessages_command += ["--locale", x[0]]
             logging.warning("Command to launch for makemessages is : %s", " ".join(makemessages_command))
-        number_of_language = len(os.listdir(self.LOCALE_PATH))
+
         subprocess.check_call(makemessages_command)
         git_diff_command = ["git", "diff", self.LOCALE_PATH]
         git_diff = subprocess.check_output(git_diff_command).decode("utf8")
-        # In the diff we should have a change only for the date of the generation
-        # So 2 * @@ * number of language
         command_as_str = " ".join(makemessages_command)
-        number_of_change = git_diff.count("@@") / 2
         msg = (
             "You did not update the translation following your changes. Maybe you did not use the "
             "normalized 'python3 manage.py makemessages --no-obsolete --no-wrap' ? If you're "
             f"working locally, just use 'git add {self.LOCALE_PATH}', we launched "
             f"'{command_as_str}' during tests.\ngit diff\n{git_diff}",
         )
-        self.assertEqual(number_of_change, number_of_language, msg)
+        number_of_change = git_diff.count("@@") / 2
+        if django_version >= "4.1":
+            # There's no date modification when there isn't any change for
+            # django above 4.1.0
+            expected_number_of_change = 0
+        else:
+            # In the diff we should have a change only for the date of the generation
+            # So 2 * @@ * number of language
+            number_of_language = len(os.listdir(self.LOCALE_PATH))
+            expected_number_of_change = number_of_language
+        self.assertEqual(number_of_change, expected_number_of_change, msg)