bpo-38688, shutil.copytree: consume iterator and create list of entries to prevent infinite recursion (GH-17098)
diff --git a/Lib/test/test_shutil.py b/Lib/test/test_shutil.py
index dd5589b..460b979 100644
--- a/Lib/test/test_shutil.py
+++ b/Lib/test/test_shutil.py
@@ -727,6 +727,17 @@
rv = shutil.copytree(src_dir, dst_dir)
self.assertEqual(['foo'], os.listdir(rv))
+ def test_copytree_subdirectory(self):
+ # copytree where dst is a subdirectory of src, see Issue 38688
+ base_dir = self.mkdtemp()
+ self.addCleanup(shutil.rmtree, base_dir, ignore_errors=True)
+ src_dir = os.path.join(base_dir, "t", "pg")
+ dst_dir = os.path.join(src_dir, "somevendor", "1.0")
+ os.makedirs(src_dir)
+ src = os.path.join(src_dir, 'pol')
+ write_file(src, 'pol')
+ rv = shutil.copytree(src_dir, dst_dir)
+ self.assertEqual(['pol'], os.listdir(rv))
class TestCopy(BaseTest, unittest.TestCase):