5.1.0: test suite is using `case` module which is unmaintained

Test suite is using case module which is unmaintained and whcih uses unitest module which is for python 2.x. case as well is using nose which is fo python 2.x https://docs.nose2.io/en/latest/differences.html so maintaining set of modules to perform kombu tests is harder and harder. IMO the best would be swoitch to pytest only. pytest output:

=========================================================================== test session starts ============================================================================
platform linux -- Python 3.8.11, pytest-6.2.4, py-1.10.0, pluggy-0.13.1
benchmark: 3.4.1 (defaults: timer=time.perf_counter disable_gc=False min_rounds=5 min_time=0.000005 max_time=1.0 calibration_precision=10 warmup=False warmup_iterations=100000)
Using --randomly-seed=3682244645
rootdir: /home/tkloczko/rpmbuild/BUILD/kombu-5.1.0, configfile: setup.cfg, testpaths: t/unit/
plugins: forked-1.3.0, shutil-1.7.0, virtualenv-1.7.0, expect-1.1.0, flake8-1.0.7, timeout-1.4.2, betamax-0.8.1, freezegun-0.4.2, aspectlib-1.5.2, toolbox-0.5, rerunfailures-9.1.1, requests-mock-1.9.3, cov-2.12.1, pyfakefs-4.5.0, flaky-3.7.0, benchmark-3.4.1, xdist-2.3.0, pylama-7.7.1, datadir-1.3.1, regressions-2.2.0, cases-3.6.3, xprocess-0.18.1, black-0.3.12, checkdocs-2.7.1, anyio-3.3.0, Faker-8.11.0, asyncio-0.15.1, trio-0.7.0, httpbin-1.0.0, subtests-0.5.0, isort-2.0.0, hypothesis-6.14.6, mock-3.6.1, profiling-1.7.0, randomly-3.8.0
collected 558 items / 18 errors / 20 deselected / 5 skipped / 515 selected

================================================================================== ERRORS ==================================================================================
__________________________________________________________________ ERROR collecting t/unit/test_common.py __________________________________________________________________
ImportError while importing test module '/home/tkloczko/rpmbuild/BUILD/kombu-5.1.0/t/unit/test_common.py'.
Hint: make sure your test modules/packages have valid Python names.
Traceback:
/usr/lib64/python3.8/importlib/__init__.py:127: in import_module
    return _bootstrap._gcd_import(name[level:], package, level)
t/unit/test_common.py:6: in <module>
    from case import ContextMock
E   ModuleNotFoundError: No module named 'case'
__________________________________________________________________ ERROR collecting t/unit/test_compat.py __________________________________________________________________
ImportError while importing test module '/home/tkloczko/rpmbuild/BUILD/kombu-5.1.0/t/unit/test_compat.py'.
Hint: make sure your test modules/packages have valid Python names.
Traceback:
/usr/lib64/python3.8/importlib/__init__.py:127: in import_module
    return _bootstrap._gcd_import(name[level:], package, level)
t/unit/test_compat.py:8: in <module>
    from t.mocks import Transport, Channel
t/mocks.py:4: in <module>
    from case import ContextMock
E   ModuleNotFoundError: No module named 'case'
_______________________________________________________________ ERROR collecting t/unit/test_compression.py ________________________________________________________________
ImportError while importing test module '/home/tkloczko/rpmbuild/BUILD/kombu-5.1.0/t/unit/test_compression.py'.
Hint: make sure your test modules/packages have valid Python names.
Traceback:
/usr/lib64/python3.8/importlib/__init__.py:127: in import_module
    return _bootstrap._gcd_import(name[level:], package, level)
t/unit/test_compression.py:4: in <module>
    from case import mock
E   ModuleNotFoundError: No module named 'case'
________________________________________________________________ ERROR collecting t/unit/test_connection.py ________________________________________________________________
ImportError while importing test module '/home/tkloczko/rpmbuild/BUILD/kombu-5.1.0/t/unit/test_connection.py'.
Hint: make sure your test modules/packages have valid Python names.
Traceback:
/usr/lib64/python3.8/importlib/__init__.py:127: in import_module
    return _bootstrap._gcd_import(name[level:], package, level)
t/unit/test_connection.py:14: in <module>
    from t.mocks import Transport
t/mocks.py:4: in <module>
    from case import ContextMock
E   ModuleNotFoundError: No module named 'case'
__________________________________________________________________ ERROR collecting t/unit/test_entity.py __________________________________________________________________
ImportError while importing test module '/home/tkloczko/rpmbuild/BUILD/kombu-5.1.0/t/unit/test_entity.py'.
Hint: make sure your test modules/packages have valid Python names.
Traceback:
/usr/lib64/python3.8/importlib/__init__.py:127: in import_module
    return _bootstrap._gcd_import(name[level:], package, level)
t/unit/test_entity.py:11: in <module>
    from t.mocks import Transport
t/mocks.py:4: in <module>
    from case import ContextMock
E   ModuleNotFoundError: No module named 'case'
________________________________________________________________ ERROR collecting t/unit/test_messaging.py _________________________________________________________________
ImportError while importing test module '/home/tkloczko/rpmbuild/BUILD/kombu-5.1.0/t/unit/test_messaging.py'.
Hint: make sure your test modules/packages have valid Python names.
Traceback:
/usr/lib64/python3.8/importlib/__init__.py:127: in import_module
    return _bootstrap._gcd_import(name[level:], package, level)
t/unit/test_messaging.py:14: in <module>
    from t.mocks import Transport
t/mocks.py:4: in <module>
    from case import ContextMock
E   ModuleNotFoundError: No module named 'case'
__________________________________________________________________ ERROR collecting t/unit/test_mixins.py __________________________________________________________________
ImportError while importing test module '/home/tkloczko/rpmbuild/BUILD/kombu-5.1.0/t/unit/test_mixins.py'.
Hint: make sure your test modules/packages have valid Python names.
Traceback:
/usr/lib64/python3.8/importlib/__init__.py:127: in import_module
    return _bootstrap._gcd_import(name[level:], package, level)
t/unit/test_mixins.py:5: in <module>
    from case import ContextMock
E   ModuleNotFoundError: No module named 'case'
______________________________________________________________ ERROR collecting t/unit/test_serialization.py _______________________________________________________________
ImportError while importing test module '/home/tkloczko/rpmbuild/BUILD/kombu-5.1.0/t/unit/test_serialization.py'.
Hint: make sure your test modules/packages have valid Python names.
Traceback:
/usr/lib64/python3.8/importlib/__init__.py:127: in import_module
    return _bootstrap._gcd_import(name[level:], package, level)
t/unit/test_serialization.py:8: in <module>
    from case import mock
E   ModuleNotFoundError: No module named 'case'
_______________________________________________________ ERROR collecting t/unit/asynchronous/aws/test_connection.py ________________________________________________________
ImportError while importing test module '/home/tkloczko/rpmbuild/BUILD/kombu-5.1.0/t/unit/asynchronous/aws/test_connection.py'.
Hint: make sure your test modules/packages have valid Python names.
Traceback:
/usr/lib64/python3.8/importlib/__init__.py:127: in import_module
    return _bootstrap._gcd_import(name[level:], package, level)
t/unit/asynchronous/aws/test_connection.py:23: in <module>
    from t.mocks import PromiseMock
t/mocks.py:4: in <module>
    from case import ContextMock
E   ModuleNotFoundError: No module named 'case'
_____________________________________________________ ERROR collecting t/unit/asynchronous/aws/sqs/test_connection.py ______________________________________________________
ImportError while importing test module '/home/tkloczko/rpmbuild/BUILD/kombu-5.1.0/t/unit/asynchronous/aws/sqs/test_connection.py'.
Hint: make sure your test modules/packages have valid Python names.
Traceback:
/usr/lib64/python3.8/importlib/__init__.py:127: in import_module
    return _bootstrap._gcd_import(name[level:], package, level)
t/unit/asynchronous/aws/sqs/test_connection.py:11: in <module>
    from t.mocks import PromiseMock
t/mocks.py:4: in <module>
    from case import ContextMock
E   ModuleNotFoundError: No module named 'case'
________________________________________________________ ERROR collecting t/unit/asynchronous/aws/sqs/test_queue.py ________________________________________________________
ImportError while importing test module '/home/tkloczko/rpmbuild/BUILD/kombu-5.1.0/t/unit/asynchronous/aws/sqs/test_queue.py'.
Hint: make sure your test modules/packages have valid Python names.
Traceback:
/usr/lib64/python3.8/importlib/__init__.py:127: in import_module
    return _bootstrap._gcd_import(name[level:], package, level)
t/unit/asynchronous/aws/sqs/test_queue.py:8: in <module>
    from t.mocks import PromiseMock
t/mocks.py:4: in <module>
    from case import ContextMock
E   ModuleNotFoundError: No module named 'case'
__________________________________________________________ ERROR collecting t/unit/asynchronous/http/test_http.py __________________________________________________________
ImportError while importing test module '/home/tkloczko/rpmbuild/BUILD/kombu-5.1.0/t/unit/asynchronous/http/test_http.py'.
Hint: make sure your test modules/packages have valid Python names.
Traceback:
/usr/lib64/python3.8/importlib/__init__.py:127: in import_module
    return _bootstrap._gcd_import(name[level:], package, level)
t/unit/asynchronous/http/test_http.py:13: in <module>
    from t.mocks import PromiseMock
t/mocks.py:4: in <module>
    from case import ContextMock
E   ModuleNotFoundError: No module named 'case'
_____________________________________________________________ ERROR collecting t/unit/transport/test_pyamqp.py _____________________________________________________________
ImportError while importing test module '/home/tkloczko/rpmbuild/BUILD/kombu-5.1.0/t/unit/transport/test_pyamqp.py'.
Hint: make sure your test modules/packages have valid Python names.
Traceback:
/usr/lib64/python3.8/importlib/__init__.py:127: in import_module
    return _bootstrap._gcd_import(name[level:], package, level)
t/unit/transport/test_pyamqp.py:6: in <module>
    from case import mock
E   ModuleNotFoundError: No module named 'case'
_____________________________________________________________ ERROR collecting t/unit/transport/test_redis.py ______________________________________________________________
ImportError while importing test module '/home/tkloczko/rpmbuild/BUILD/kombu-5.1.0/t/unit/transport/test_redis.py'.
Hint: make sure your test modules/packages have valid Python names.
Traceback:
/usr/lib64/python3.8/importlib/__init__.py:127: in import_module
    return _bootstrap._gcd_import(name[level:], package, level)
t/unit/transport/test_redis.py:10: in <module>
    from case import ContextMock, mock
E   ModuleNotFoundError: No module named 'case'
________________________________________________________ ERROR collecting t/unit/transport/virtual/test_exchange.py ________________________________________________________
ImportError while importing test module '/home/tkloczko/rpmbuild/BUILD/kombu-5.1.0/t/unit/transport/virtual/test_exchange.py'.
Hint: make sure your test modules/packages have valid Python names.
Traceback:
/usr/lib64/python3.8/importlib/__init__.py:127: in import_module
    return _bootstrap._gcd_import(name[level:], package, level)
t/unit/transport/virtual/test_exchange.py:8: in <module>
    from t.mocks import Transport
t/mocks.py:4: in <module>
    from case import ContextMock
E   ModuleNotFoundError: No module named 'case'
____________________________________________________________ ERROR collecting t/unit/utils/test_amq_manager.py _____________________________________________________________
ImportError while importing test module '/home/tkloczko/rpmbuild/BUILD/kombu-5.1.0/t/unit/utils/test_amq_manager.py'.
Hint: make sure your test modules/packages have valid Python names.
Traceback:
/usr/lib64/python3.8/importlib/__init__.py:127: in import_module
    return _bootstrap._gcd_import(name[level:], package, level)
t/unit/utils/test_amq_manager.py:4: in <module>
    from case import mock
E   ModuleNotFoundError: No module named 'case'
_______________________________________________________________ ERROR collecting t/unit/utils/test_compat.py _______________________________________________________________
ImportError while importing test module '/home/tkloczko/rpmbuild/BUILD/kombu-5.1.0/t/unit/utils/test_compat.py'.
Hint: make sure your test modules/packages have valid Python names.
Traceback:
/usr/lib64/python3.8/importlib/__init__.py:127: in import_module
    return _bootstrap._gcd_import(name[level:], package, level)
t/unit/utils/test_compat.py:6: in <module>
    from case import mock
E   ModuleNotFoundError: No module named 'case'
_____________________________________________________________ ERROR collecting t/unit/utils/test_functional.py _____________________________________________________________
ImportError while importing test module '/home/tkloczko/rpmbuild/BUILD/kombu-5.1.0/t/unit/utils/test_functional.py'.
Hint: make sure your test modules/packages have valid Python names.
Traceback:
/usr/lib64/python3.8/importlib/__init__.py:127: in import_module
    return _bootstrap._gcd_import(name[level:], package, level)
t/unit/utils/test_functional.py:8: in <module>
    from case import mock
E   ModuleNotFoundError: No module named 'case'
========================================================================= short test summary info ==========================================================================
SKIPPED [1] t/unit/transport/test_consul.py:9: could not import 'consul': No module named 'consul'
SKIPPED [1] t/unit/transport/test_etcd.py:9: could not import 'etcd': No module named 'etcd'
SKIPPED [1] t/unit/transport/test_librabbitmq.py:5: could not import 'librabbitmq': No module named 'librabbitmq'
SKIPPED [1] t/unit/transport/test_mongodb.py:10: could not import 'pymongo': No module named 'pymongo'
SKIPPED [1] t/unit/transport/test_zookeeper.py:5: could not import 'kazoo': No module named 'kazoo'
ERROR t/unit/test_common.py
ERROR t/unit/test_compat.py
ERROR t/unit/test_compression.py
ERROR t/unit/test_connection.py
ERROR t/unit/test_entity.py
ERROR t/unit/test_messaging.py
ERROR t/unit/test_mixins.py
ERROR t/unit/test_serialization.py
ERROR t/unit/asynchronous/aws/test_connection.py
ERROR t/unit/asynchronous/aws/sqs/test_connection.py
ERROR t/unit/asynchronous/aws/sqs/test_queue.py
ERROR t/unit/asynchronous/http/test_http.py
ERROR t/unit/transport/test_pyamqp.py
ERROR t/unit/transport/test_redis.py
ERROR t/unit/transport/virtual/test_exchange.py
ERROR t/unit/utils/test_amq_manager.py
ERROR t/unit/utils/test_compat.py
ERROR t/unit/utils/test_functional.py
!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! Interrupted: 18 errors during collection !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
=============================================================== 5 skipped, 20 deselected, 18 errors in 2.57s ===============================================================

[matusvalo]

Most of case usages were removed by me. The only pending ones are mainly special helper utilities which maybe can be moved directly to each Celery repository. This will increase duplicities but it will remove easily dependency to case.

[kloczek]

Sorry have no time to work on that. I’m only reporting what I found during package kombu as rpm and Solaris IPS packages.