Refs #24526 -- Made the django logger handle INFO messages.

Without an explicit 'level', only messages at WARNING or higher
are handled. This makes the config consistent with the docs
which say, "The django catch-all logger sends all messages at
the INFO level or higher to the console."

tests/logging_tests/tests.py

@@ -6,6 +6,7 @@ import warnings
 
 from admin_scripts.tests import AdminScriptTestCase
 
+from django.conf import settings
 from django.core import mail
 from django.core.files.temp import NamedTemporaryFile
 from django.test import RequestFactory, SimpleTestCase, override_settings
@@ -13,7 +14,8 @@ from django.test.utils import LoggingCaptureMixin, patch_logger
 from django.utils.deprecation import RemovedInNextVersionWarning
 from django.utils.encoding import force_text
 from django.utils.log import (
-    AdminEmailHandler, CallbackFilter, RequireDebugFalse, RequireDebugTrue,
+    DEFAULT_LOGGING, AdminEmailHandler, CallbackFilter, RequireDebugFalse,
+    RequireDebugTrue,
 )
 from django.utils.six import StringIO
 
@@ -67,6 +69,17 @@ class LoggingFiltersTest(SimpleTestCase):
 
 class DefaultLoggingTest(LoggingCaptureMixin, SimpleTestCase):
 
+    @classmethod
+    def setUpClass(cls):
+        super(DefaultLoggingTest, cls).setUpClass()
+        cls._logging = settings.LOGGING
+        logging.config.dictConfig(DEFAULT_LOGGING)
+
+    @classmethod
+    def tearDownClass(cls):
+        super(DefaultLoggingTest, cls).tearDownClass()
+        logging.config.dictConfig(cls._logging)
+
     def test_django_logger(self):
         """
         The 'django' base logger only output anything when DEBUG=True.
@@ -78,6 +91,21 @@ class DefaultLoggingTest(LoggingCaptureMixin, SimpleTestCase):
             self.logger.error("Hey, this is an error.")
             self.assertEqual(self.logger_output.getvalue(), 'Hey, this is an error.\n')
 
+    def test_django_logger_warning(self):
+        with self.settings(DEBUG=True):
+            self.logger.warning('warning')
+            self.assertEqual(self.logger_output.getvalue(), 'warning\n')
+
+    def test_django_logger_info(self):
+        with self.settings(DEBUG=True):
+            self.logger.info('info')
+            self.assertEqual(self.logger_output.getvalue(), 'info\n')
+
+    def test_django_logger_debug(self):
+        with self.settings(DEBUG=True):
+            self.logger.debug('debug')
+            self.assertEqual(self.logger_output.getvalue(), '')
+
 
 class WarningLoggerTests(SimpleTestCase):
     """