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-rw-r--r--Lib/test/test_tarfile.py16
1 files changed, 16 insertions, 0 deletions
diff --git a/Lib/test/test_tarfile.py b/Lib/test/test_tarfile.py
index 94ef61c0ce..68e094d5db 100644
--- a/Lib/test/test_tarfile.py
+++ b/Lib/test/test_tarfile.py
@@ -419,6 +419,22 @@ class StreamReadTest(CommonReadTest):
mode="r|"
+ def test_read_through(self):
+ # Issue #11224: A poorly designed _FileInFile.read() method
+ # caused seeking errors with stream tar files.
+ for tarinfo in self.tar:
+ if not tarinfo.isreg():
+ continue
+ fobj = self.tar.extractfile(tarinfo)
+ while True:
+ try:
+ buf = fobj.read(512)
+ except tarfile.StreamError:
+ self.fail("simple read-through using TarFile.extractfile() failed")
+ if not buf:
+ break
+ fobj.close()
+
def test_fileobj_regular_file(self):
tarinfo = self.tar.next() # get "regtype" (can't use getmember)
fobj = self.tar.extractfile(tarinfo)