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FAILED tests/test_igzip_threaded.py::test_flush on openEuler 22.03 #241
Description
I ran python-isal tests on the openEuler OS and Kunpeng AArch64 platform, where two test cases in tests/test_igzip_threaded.py failed.
OS:
[root@node1 python-isal]# cat /etc/os-release
NAME="openEuler"
VERSION="22.03 (LTS-SP3)"
ID="openEuler"
VERSION_ID="22.03"
PRETTY_NAME="openEuler 22.03 (LTS-SP3)"
ANSI_COLOR="0;31"
platform: Kunpeng-920
`
==================== short test summary info ==============
FAILED tests/test_igzip_threaded.py::test_flush[1] - AssertionError: assert b'\x01\x00\x00\x00' == b'\x00\x00\xff\xff'
FAILED tests/test_igzip_threaded.py::test_flush[2] - AssertionError: assert b'\x01\x00\x00\x00' == b'\x00\x00\xff\xff'
============== 2 failed, 9439 passed, 6 skipped, 2 warnings in 35.67s ====================
`
tmp_path = PosixPath('/tmp/pytest-of-root/pytest-11/test_flush_1_0'), threads = 1
@pytest.mark.parametrize("threads", [1, 2])
def test_flush(tmp_path, threads):
empty_block_end = b"\x00\x00\xff\xff"
compressobj = zlib.compressobj(wbits=-15)
deflate_last_block = compressobj.compress(b"") + compressobj.flush()
test_file = tmp_path / "output.gz"
with igzip_threaded.open(test_file, "wb", threads=threads) as f:
f.write(b"1")
f.flush()
data = test_file.read_bytes()
> assert data[-4:] == empty_block_end
E AssertionError: assert b'\x01\x00\x00\x00' == b'\x00\x00\xff\xff'
E At index 0 diff: b'\x01' != b'\x00'
E Use -v to get more difftests/test_igzip_threaded.py:255: AssertionError
I subsequently reproduced the same issue on an Intel(R) Xeon(R) Gold 6266C platform.
Activity
rhpvorderman commentedon Sep 9, 2025
Thank you for submitting the bug. It does work correctly on Linux (Ubuntu, Debian), MacOS and Windows. It also works on ubuntu aarch64 (emulated). Are you sure this is not an OpenEuler bug?
I ran it on an intel skylake processor: also no issue. Since I am not able to reproduce the error, I can not fix it. If you manage to find the cause, then fixes are welcome.
[-]FAILED tests/test_igzip_threaded.py::test_flush[/-][+]FAILED tests/test_igzip_threaded.py::test_flush on openEuler 22.03[/+]liuqinfei commentedon Sep 9, 2025
rhpvorderman commentedon Sep 10, 2025
Hey, I did a check and there are some test cases in the current test suite that fail on older versions of python-isal. If you did not test the latest and greatest code on the develop branch this test is expected to fail. I am in the process of releasing 1.8.0 which should fix the issue.