diff options
Diffstat (limited to 'Lib/test/test_gzip.py')
| -rw-r--r-- | Lib/test/test_gzip.py | 12 |
1 files changed, 11 insertions, 1 deletions
diff --git a/Lib/test/test_gzip.py b/Lib/test/test_gzip.py index cf80127..ae384c3 100644 --- a/Lib/test/test_gzip.py +++ b/Lib/test/test_gzip.py @@ -714,7 +714,6 @@ class TestGzip(BaseTest): self.assertEqual(f.mtime, mtime) def test_compress_correct_level(self): - # gzip.compress calls with mtime == 0 take a different code path. for mtime in (0, 42): with self.subTest(mtime=mtime): nocompress = gzip.compress(data1, compresslevel=0, mtime=mtime) @@ -722,6 +721,17 @@ class TestGzip(BaseTest): self.assertIn(data1, nocompress) self.assertNotIn(data1, yescompress) + def test_issue112346(self): + # The OS byte should be 255, this should not change between Python versions. + for mtime in (0, 42): + with self.subTest(mtime=mtime): + compress = gzip.compress(data1, compresslevel=1, mtime=mtime) + self.assertEqual( + struct.unpack("<IxB", compress[4:10]), + (mtime, 255), + "Gzip header does not properly set either mtime or OS byte." + ) + def test_decompress(self): for data in (data1, data2): buf = io.BytesIO() |