In test_cbor.py TestRoot class does not have an attribute named _ld.

[mercurytoxic]

After successful build while running tests I get:

platform linux -- Python 3.11.3, pytest-7.4.0, pluggy-1.2.0
Using --randomly-seed=3873878859
rootdir: /home/pizzaman/Downloads/work-folder/PKGBUILDs/python-cbor/src/cbor_py-b3af679e7cf3e12d50acb83c3c591fc5db9a658d
plugins: anyio-3.7.1, xdist-3.3.1, randomly-3.13.0, cov-4.1.0, forked-1.6.0
collected 63 items                                                                                                                                                                                                                                                                                                          

cbor/tests/test_cbor.py ...............F.....................................                                                                                                                                                                                                                                         [ 84%]
cbor/tests/test_objects.py .....                                                                                                                                                                                                                                                                                      [ 92%]
cbor/tests/test_vectors.py .                                                                                                                                                                                                                                                                                          [ 93%]
cbor/tests/test_usage.py ....                                                                                                                                                                                                                                                                                         [100%]

========================================================================================================================================================= FAILURES ==========================================================================================================================================================
_____________________________________________________________________________________________________________________________________________________ TestRoot.testable _____________________________________________________________________________________________________________________________________________________

cls = <class 'cbor.tests.test_cbor.TestRoot'>

    @classmethod
    def testable(cls):
>       ok = (cls._ld[0] is not None) and (cls._ld[1] is not None) and (cls._ld[3] is not None) and (cls._ld[4] is not None)
E       AttributeError: type object 'TestRoot' has no attribute '_ld'

cbor/tests/test_cbor.py:63: AttributeError
===================================================================================================================================================== warnings summary ======================================================================================================================================================
cbor/tests/test_cbor.py::TestCBORPyC::testable
  /usr/lib/python3.11/unittest/case.py:678: DeprecationWarning: It is deprecated to return a value that is not None from a test case (<bound method TestRoot.testable of <class 'cbor.tests.test_cbor.TestCBORPyC'>>)
    return self.run(*args, **kwds)

cbor/tests/test_cbor.py::TestCPy::testable
  /usr/lib/python3.11/site-packages/_pytest/python.py:198: PytestReturnNotNoneWarning: Expected None, but cbor/tests/test_cbor.py::TestCPy::testable returned False, which will be an error in a future version of pytest.  Did you mean to use `assert` instead of `return`?
    warnings.warn(

cbor/tests/test_cbor.py::TestPyC::testable
  /usr/lib/python3.11/site-packages/_pytest/python.py:198: PytestReturnNotNoneWarning: Expected None, but cbor/tests/test_cbor.py::TestPyC::testable returned False, which will be an error in a future version of pytest.  Did you mean to use `assert` instead of `return`?
    warnings.warn(

cbor/tests/test_cbor.py::TestCC::testable
  /usr/lib/python3.11/site-packages/_pytest/python.py:198: PytestReturnNotNoneWarning: Expected None, but cbor/tests/test_cbor.py::TestCC::testable returned False, which will be an error in a future version of pytest.  Did you mean to use `assert` instead of `return`?
    warnings.warn(

cbor/tests/test_cbor.py::TestPyPy::testable
  /usr/lib/python3.11/site-packages/_pytest/python.py:198: PytestReturnNotNoneWarning: Expected None, but cbor/tests/test_cbor.py::TestPyPy::testable returned True, which will be an error in a future version of pytest.  Did you mean to use `assert` instead of `return`?
    warnings.warn(

cbor/tests/test_cbor.py::TestCBORPyPy::testable
  /usr/lib/python3.11/unittest/case.py:678: DeprecationWarning: It is deprecated to return a value that is not None from a test case (<bound method TestRoot.testable of <class 'cbor.tests.test_cbor.TestCBORPyPy'>>)
    return self.run(*args, **kwds)

cbor/tests/test_cbor.py::TestCBORCPy::testable
  /usr/lib/python3.11/unittest/case.py:678: DeprecationWarning: It is deprecated to return a value that is not None from a test case (<bound method TestRoot.testable of <class 'cbor.tests.test_cbor.TestCBORCPy'>>)
    return self.run(*args, **kwds)

cbor/tests/test_cbor.py::TestCBORCC::testable
  /usr/lib/python3.11/unittest/case.py:678: DeprecationWarning: It is deprecated to return a value that is not None from a test case (<bound method TestRoot.testable of <class 'cbor.tests.test_cbor.TestCBORCC'>>)
    return self.run(*args, **kwds)

cbor/tests/test_objects.py::TestPyPy::testable
  /usr/lib/python3.11/site-packages/_pytest/python.py:198: PytestReturnNotNoneWarning: Expected None, but cbor/tests/test_objects.py::TestPyPy::testable returned True, which will be an error in a future version of pytest.  Did you mean to use `assert` instead of `return`?
    warnings.warn(

-- Docs: https://docs.pytest.org/en/stable/how-to/capture-warnings.html
================================================================================================================================================== short test summary info ==================================================================================================================================================
FAILED cbor/tests/test_cbor.py::TestRoot::testable - AttributeError: type object 'TestRoot' has no attribute '_ld'
========================================================================================================================================= 1 failed, 62 passed, 9 warnings in 0.17s ==========================================================================================================================================
==> ERROR: A failure occurred in check().
    Aborting...

[mercurytoxic]

One way to fix this error would be to add an _ld attribute to the TestRoot class.

class TestRoot:
    _ld = [None, None, None, None, None]

The following patch fixes the problem.

--- a/cbor/tests/test_cbor.py	2023-08-18 10:06:40.923167800 +1000
+++ b/cbor/tests/test_cbor.py	2023-08-18 10:10:04.420155700 +1000
@@ -43,6 +43,7 @@

 class TestRoot(object):
+    _ld = [None, None, None, None, None]
     @classmethod
     def loads(cls, *args):
         return cls._ld[0](*args)