diff options
Diffstat (limited to 'Lib/test')
| -rw-r--r-- | Lib/test/test_tarfile.py | 25 |
1 files changed, 25 insertions, 0 deletions
diff --git a/Lib/test/test_tarfile.py b/Lib/test/test_tarfile.py index affbeeb..f4c0035 100644 --- a/Lib/test/test_tarfile.py +++ b/Lib/test/test_tarfile.py @@ -1121,6 +1121,30 @@ class Bz2WriteTest(WriteTest): class Bz2StreamWriteTest(StreamWriteTest): mode = "w|bz2" +class Bz2PartialReadTest(unittest.TestCase): + # Issue5068: The _BZ2Proxy.read() method loops forever + # on an empty or partial bzipped file. + + def _test_partial_input(self, mode): + class MyBytesIO(io.BytesIO): + hit_eof = False + def read(self, n): + if self.hit_eof: + raise AssertionError("infinite loop detected in tarfile.open()") + self.hit_eof = self.tell() == len(self.getvalue()) + return super(MyBytesIO, self).read(n) + + data = bz2.compress(tarfile.TarInfo("foo").tobuf()) + for x in range(len(data) + 1): + tarfile.open(fileobj=MyBytesIO(data[:x]), mode=mode) + + def test_partial_input(self): + self._test_partial_input("r") + + def test_partial_input_bz2(self): + self._test_partial_input("r:bz2") + + def test_main(): if not os.path.exists(TEMPDIR): os.mkdir(TEMPDIR) @@ -1178,6 +1202,7 @@ def test_main(): Bz2StreamReadTest, Bz2WriteTest, Bz2StreamWriteTest, + Bz2PartialReadTest, ] try: |