Adding directory to PymodeRope #1159

Using the python project scheme suggested by the pytest documentation, pymode does not include the tests/ directory into its ropeproject when the “include method” of the src/ directory is done via an editable install (pip install -e .).

How do I add an additional source directory to PymodeRope, namely the tests/ directory?

Minimal working example

First create a venv virtual environment as well as a temporary directory. The abbreviation pmt stands for “pymode test”.

$ mkdir -p /tmp/pmt/{.venv,src/pmt,tests}
$ cd /tmp/pmt
$ python -m venv /tmp/pmt/.venv/pmt
$ source /tmp/pmt/.venv/pmt/bin/activate
(pmt) $ python -m pip install -U pip
(pmt) $ python -m pip install build pytest
(pmt) $ touch pyproject.toml src/pmt/__init__.py

Create the three source files with an editor of your choice, namely

• # ––– file /tmp/pmt/src/pmt/spam.py
  def spamfunc() -> int:
      return 1

• # ––– file /tmp/pmt/src/pmt/bacon.py
  from .spam import spamfunc
  
  
  def baconfunc() -> None:
      return 1 + spamfunc()

• # ––– file /tmp/pmt/tests/test_pmt.py
  from pmt.bacon import baconfunc
  from pmt.spam import spamfunc
  
  
  def test_baconfunc() -> None:
      assert 2 == baconfunc()
  
  
  def test_spamfunc() -> None:
      assert 1 == spamfunc()

The project directory will look like this:

.
├── pyproject.toml
├── src
│   └── pmt
│       ├── bacon.py
│       ├── __init__.py
│       └── spam.py
└── tests
    └── test_pmt.py

As suggested by pytest, install the editable version of the package and invoke pytest:

(pmt) $ python -m pip install -e .
(pmt) $ python -m pytest
================================ test session starts =================================
platform linux -- Python 3.10.6, pytest-7.1.3, pluggy-1.0.0
rootdir: /tmp/pmt
collected 2 items                                                                    

tests/test_pmt.py ..                                                           [100%]

================================= 2 passed in 0.01s ==================================

To finally reproduce the behaviour:

• open the source file with vim /tmp/pmt/src/pmt/spam.py
• move the cursor to spamfunc
• start function renaming by hitting <C-c>rr
• insert a different name, for instance hamfunc and press <Enter>
• perform the renaming by inserting 1<Enter>

After that, the renaming was successfully done in /tmp/pmt/src/pmt/spam.py and /tmp/pmt/src/pmt/bacon.py but not in tmp/pmt/tests/test_pmt.py (as I expect).

What I have tried

I tried to add manually the tests directory to the .ropeproject/config.py file

def set_prefs(prefs):
    # … more code of the default config.py file …

    # Custom source folders:  By default rope searches the project
    # for finding source folders (folders that should be searched
    # for finding modules).  You can add paths to that list.  Note
    # that rope guesses project source folders correctly most of the
    # time; use this if you have any problems.
    # The folders should be relative to project root and use '/' for
    # separating folders regardless of the platform rope is running on.
    # 'src/my_source_folder' for instance.
    prefs.add('source_folders', 'tests')

    # … more code of the default config.py file …

with no success.

When I change the import policy by

• uninstalling the module again with (pmt) $ python -m pip uninstall pmt
• change the imports of tmp/pmt/tests/test_pmt.py to

  from src.pmt.bacon import baconfunc
  from src.pmt.spam import spamfunc

then the renaming as suggested above does work, but that project structure is not as I or the pytest guys, respectively, want it to be.

Used versions

(pmt) $ python --version
Python 3.10.6
(pmt) $ python -m pip freeze | grep 'build\|pytest'
build==0.8.0
pytest==7.1.3

Pymode version: commit 85d2cd1a196ac1def79d4599b5be69395ed5b603 (HEAD → develop)