bpo-46425: fix direct invocation of `test_importlib` by sobolevn · Pull Request #30682 · python/cpython

sobolevn

Multiple tests in test_importlib were not suited to direct invocation. Why?

» ./python.exe ./Lib/test/test_importlib/test_open.py
Traceback (most recent call last):
  File "/Users/sobolev/Desktop/cpython/./Lib/test/test_importlib/test_open.py", line 4, in <module>
    from . import data01
    ^^^^^^^^^^^^^^^^^^^^
ImportError: attempted relative import with no known parent package

In several places relative imports were used in setUp(). It was also problematic:

» ./python.exe ./Lib/test/test_importlib/test_open.py
..................../Users/sobolev/Desktop/cpython/./Lib/test/test_importlib/test_open.py:71: ImportWarning: can't resolve package from __spec__ or __package__, falling back on __name__ and __path__
  from . import namespacedata01
EEEEEE............
======================================================================
ERROR: test_open_binary (__main__.OpenDiskNamespaceTests)
----------------------------------------------------------------------
Traceback (most recent call last):
  File "/Users/sobolev/Desktop/cpython/./Lib/test/test_importlib/test_open.py", line 71, in setUp
    from . import namespacedata01
    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
ImportError: attempted relative import with no known parent package

======================================================================
ERROR: test_open_binary_FileNotFoundError (__main__.OpenDiskNamespaceTests)
----------------------------------------------------------------------
Traceback (most recent call last):
  File "/Users/sobolev/Desktop/cpython/./Lib/test/test_importlib/test_open.py", line 71, in setUp
    from . import namespacedata01
    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
ImportError: attempted relative import with no known parent package

======================================================================
ERROR: test_open_text_FileNotFoundError (__main__.OpenDiskNamespaceTests)
----------------------------------------------------------------------
Traceback (most recent call last):
  File "/Users/sobolev/Desktop/cpython/./Lib/test/test_importlib/test_open.py", line 71, in setUp
    from . import namespacedata01
    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
ImportError: attempted relative import with no known parent package

======================================================================
ERROR: test_open_text_default_encoding (__main__.OpenDiskNamespaceTests)
----------------------------------------------------------------------
Traceback (most recent call last):
  File "/Users/sobolev/Desktop/cpython/./Lib/test/test_importlib/test_open.py", line 71, in setUp
    from . import namespacedata01
    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
ImportError: attempted relative import with no known parent package

======================================================================
ERROR: test_open_text_given_encoding (__main__.OpenDiskNamespaceTests)
----------------------------------------------------------------------
Traceback (most recent call last):
  File "/Users/sobolev/Desktop/cpython/./Lib/test/test_importlib/test_open.py", line 71, in setUp
    from . import namespacedata01
    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
ImportError: attempted relative import with no known parent package

======================================================================
ERROR: test_open_text_with_errors (__main__.OpenDiskNamespaceTests)
----------------------------------------------------------------------
Traceback (most recent call last):
  File "/Users/sobolev/Desktop/cpython/./Lib/test/test_importlib/test_open.py", line 71, in setUp
    from . import namespacedata01
    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
ImportError: attempted relative import with no known parent package

----------------------------------------------------------------------
Ran 38 tests in 0.017s

FAILED (errors=6)

This PR is quite big. If desireable, I can split it into multiple parts.