Backported test for issue #20238.

aef44edf · Serhiy Storchaka · e6e07a49 · aef44edf
Commit aef44edf authored Jan 18, 2014 by Serhiy Storchaka
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Lib/test/test_tarfile.py Lib/test/test_tarfile.py +6 -0

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--- a/Lib/test/test_tarfile.py
+++ b/Lib/test/test_tarfile.py
@@ -657,6 +657,12 @@ class WriteTestBase(unittest.TestCase):
        tar.addfile(tarfile.TarInfo("foo"))
        tar.close()
        self.assertTrue(fobj.closed is False, "external fileobjs must never closed")
+        # Issue #20238: Incomplete gzip output with mode="w:gz"
+        data = fobj.getvalue()
+        del tar
+        test_support.gc_collect()
+        self.assertFalse(fobj.closed)
+        self.assertEqual(data, fobj.getvalue())


 class WriteTest(WriteTestBase):