issue #18698: ensure importlib.reload() returns the module out of sys.modules.
diff --git a/Lib/test/test_imp.py b/Lib/test/test_imp.py
index 3fb119b..bf29e42 100644
--- a/Lib/test/test_imp.py
+++ b/Lib/test/test_imp.py
@@ -5,6 +5,7 @@
import shutil
import sys
from test import support
+from test.test_importlib import util
import unittest
import warnings
@@ -285,6 +286,22 @@
with self.assertRaisesRegex(ImportError, 'html'):
imp.reload(parser)
+ def test_module_replaced(self):
+ # see #18698
+ def code():
+ module = type(sys)('top_level')
+ module.spam = 3
+ sys.modules['top_level'] = module
+ mock = util.mock_modules('top_level',
+ module_code={'top_level': code})
+ with mock:
+ with util.import_state(meta_path=[mock]):
+ module = importlib.import_module('top_level')
+ reloaded = imp.reload(module)
+ actual = sys.modules['top_level']
+ self.assertEqual(actual.spam, 3)
+ self.assertEqual(reloaded.spam, 3)
+
class PEP3147Tests(unittest.TestCase):
"""Tests of PEP 3147."""