Applied ignore_warnings to Django tests

tests/migrations/test_writer.py

@@ -7,12 +7,11 @@ import os
 import re
 import tokenize
 import unittest
-import warnings
 
 from django.core.validators import RegexValidator, EmailValidator
 from django.db import models, migrations
 from django.db.migrations.writer import MigrationWriter, SettingsReference
-from django.test import TestCase
+from django.test import TestCase, ignore_warnings
 from django.conf import settings
 from django.utils import datetime_safe, six
 from django.utils.deconstruct import deconstructible
@@ -288,6 +287,10 @@ class WriterTests(TestCase):
                     )
                 )
 
+    # Silence warning on Python 2: Not importing directory
+    # 'tests/migrations/migrations_test_apps/without_init_file/migrations':
+    # missing __init__.py
+    @ignore_warnings(category=ImportWarning)
     def test_migration_path(self):
         test_apps = [
             'migrations.migrations_test_apps.normal',
@@ -302,12 +305,7 @@ class WriterTests(TestCase):
                 migration = migrations.Migration('0001_initial', app.split('.')[-1])
                 expected_path = os.path.join(base_dir, *(app.split('.') + ['migrations', '0001_initial.py']))
                 writer = MigrationWriter(migration)
-                # Silence warning on Python 2: Not importing directory
-                # 'tests/migrations/migrations_test_apps/without_init_file/migrations':
-                # missing __init__.py
-                with warnings.catch_warnings():
-                    warnings.filterwarnings("ignore", category=ImportWarning)
-                    self.assertEqual(writer.path, expected_path)
+                self.assertEqual(writer.path, expected_path)
 
     def test_custom_operation(self):
         migration = type(str("Migration"), (migrations.Migration,), {