Refs #28478 -- Deprecated TestCase's allow_database_queries and multi_db in favor of databases.

1 files changed, 64 insertions, 0 deletions

diff --git a/tests/test_utils/test_deprecated_features.py b/tests/test_utils/test_deprecated_features.py
new file mode 100644
index 0000000000..fbed5e14c5
--- /dev/null
+++ b/tests/test_utils/test_deprecated_features.py
@@ -0,0 +1,64 @@
+from django.db import connections
+from django.db.utils import DEFAULT_DB_ALIAS
+from django.test import SimpleTestCase, TestCase, TransactionTestCase
+from django.utils.deprecation import RemovedInDjango31Warning
+
+
+class AllowDatabaseQueriesDeprecationTests(SimpleTestCase):
+    def test_enabled(self):
+        class AllowedDatabaseQueries(SimpleTestCase):
+            allow_database_queries = True
+        message = (
+            '`SimpleTestCase.allow_database_queries` is deprecated. Restrict '
+            'the databases available during the execution of '
+            'test_utils.test_deprecated_features.AllowDatabaseQueriesDeprecationTests.'
+            'test_enabled.<locals>.AllowedDatabaseQueries with the '
+            '`databases` attribute instead.'
+        )
+        with self.assertWarnsMessage(RemovedInDjango31Warning, message):
+            self.assertEqual(AllowedDatabaseQueries.databases, {'default'})
+
+    def test_explicitly_disabled(self):
+        class AllowedDatabaseQueries(SimpleTestCase):
+            allow_database_queries = False
+        message = (
+            '`SimpleTestCase.allow_database_queries` is deprecated. Restrict '
+            'the databases available during the execution of '
+            'test_utils.test_deprecated_features.AllowDatabaseQueriesDeprecationTests.'
+            'test_explicitly_disabled.<locals>.AllowedDatabaseQueries with '
+            'the `databases` attribute instead.'
+        )
+        with self.assertWarnsMessage(RemovedInDjango31Warning, message):
+            self.assertEqual(AllowedDatabaseQueries.databases, set())
+
+
+class MultiDbDeprecationTests(SimpleTestCase):
+    def test_transaction_test_case(self):
+        class MultiDbTestCase(TransactionTestCase):
+            multi_db = True
+        message = (
+            '`TransactionTestCase.multi_db` is deprecated. Databases '
+            'available during this test can be defined using '
+            'test_utils.test_deprecated_features.MultiDbDeprecationTests.'
+            'test_transaction_test_case.<locals>.MultiDbTestCase.databases.'
+        )
+        with self.assertWarnsMessage(RemovedInDjango31Warning, message):
+            self.assertEqual(MultiDbTestCase.databases, set(connections))
+        MultiDbTestCase.multi_db = False
+        with self.assertWarnsMessage(RemovedInDjango31Warning, message):
+            self.assertEqual(MultiDbTestCase.databases, {DEFAULT_DB_ALIAS})
+
+    def test_test_case(self):
+        class MultiDbTestCase(TestCase):
+            multi_db = True
+        message = (
+            '`TestCase.multi_db` is deprecated. Databases available during '
+            'this test can be defined using '
+            'test_utils.test_deprecated_features.MultiDbDeprecationTests.'
+            'test_test_case.<locals>.MultiDbTestCase.databases.'
+        )
+        with self.assertWarnsMessage(RemovedInDjango31Warning, message):
+            self.assertEqual(MultiDbTestCase.databases, set(connections))
+        MultiDbTestCase.multi_db = False
+        with self.assertWarnsMessage(RemovedInDjango31Warning, message):
+            self.assertEqual(MultiDbTestCase.databases, {DEFAULT_DB_ALIAS})