[jira] [Assigned] (ARROW-16681) [Python] Fix doc for PyArrow unit tests dependant on module path

["Yaron Gvili (Jira)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/ARROW-16681?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Yaron Gvili reassigned ARROW-16681:
-----------------------------------

    Assignee: Yaron Gvili

> [Python] Fix doc for PyArrow unit tests dependant on module path
> ----------------------------------------------------------------
>
>                 Key: ARROW-16681
>                 URL: https://issues.apache.org/jira/browse/ARROW-16681
>             Project: Apache Arrow
>          Issue Type: Improvement
>          Components: Python
>            Reporter: Yaron Gvili
>            Assignee: Yaron Gvili
>            Priority: Major
>              Labels: pull-request-available
>          Time Spent: 10m
>  Remaining Estimate: 0h
>
> The [PyArrow dev docs|https://arrow.apache.org/docs/developers/python.html] currently gives
> {code:java}
> python -m pytest arrow/python/pyarrow{code}
> as the unit-testing command, however there are some unit tests (see list at the bottom) that currently fail because they depend on the "arrow/python" directory being included in the module path whereas it includes instead the current directory - see example below.
>  
> The fix should be either in the unit tests, to avoid the dependency on the current directory being in the module path, or in the documentation, to instruct that the unit tests should be run from the "arrow/python" directory.
> As example for a failed test, for
> {code:java}
> python -m pytest arrow/python/pyarrow/tests/test_misc.py::test_runtime_info{code}
> I'm getting an error with this tail:
>  
> {noformat}
> Traceback (most recent call last):
>   File "<string>", line 2, in <module>
> ModuleNotFoundError: No module named 'pyarrow'
> ========================================================================================= short test summary info ==========================================================================================
> FAILED arrow/python/pyarrow/tests/test_misc.py::test_runtime_info - subprocess.CalledProcessError: Command '['/mnt/soft1/tscontract/pkg/miniconda3/envs/pyarrow-dev/bin/python', '-c', "if 1:\n          ...{noformat}
> Here is the list of unit tests I'm getting a similar error:
>  
>  
> {noformat}
> test_memory.py::test_env_var
> test_memory.py::test_debug_memory_pool_abort[default_memory_pool]
> test_memory.py::test_debug_memory_pool_abort[jemalloc_memory_pool]
> test_memory.py::test_debug_memory_pool_abort[system_memory_pool]
> test_memory.py::test_debug_memory_pool_trap[default_memory_pool]
> test_memory.py::test_debug_memory_pool_trap[jemalloc_memory_pool]
> test_memory.py::test_debug_memory_pool_trap[system_memory_pool]
> test_memory.py::test_debug_memory_pool_warn[default_memory_pool]
> test_memory.py::test_debug_memory_pool_warn[jemalloc_memory_pool]
> test_memory.py::test_debug_memory_pool_warn[system_memory_pool]
> test_memory.py::test_debug_memory_pool_disabled[default_memory_pool]
> test_memory.py::test_debug_memory_pool_disabled[jemalloc_memory_pool]
> test_memory.py::test_debug_memory_pool_disabled[system_memory_pool]
> test_misc.py::test_env_var_io_thread_count
> test_misc.py::test_runtime_info{noformat}
>  



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