Use mock sample in tests

[williambdean]

Saving about 50s in the test suite by mocking pm.sample

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📚 Documentation preview 📚: https://causalpy--489.org.readthedocs.build/en/489/

[codecov]

Codecov Report

Attention: Patch coverage is 92.59259% with 2 lines in your changes missing coverage. Please review.

Project coverage is 94.33%. Comparing base (a626c1e) to head (9250f3d).

Files with missing lines	Patch %	Lines
causalpy/tests/conftest.py	75.00%	2 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #489      +/-   ##
==========================================
- Coverage   94.40%   94.33%   -0.08%     
==========================================
  Files          29       29              
  Lines        2075     2083       +8     
==========================================
+ Hits         1959     1965       +6     
- Misses        116      118       +2     

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[williambdean]

66s -> 16s test suite runs. nice

[williambdean]

Doing for doctest would be greater reduction of time

[williambdean]

6m31s down to 1m58s

[drbenvincent]

This is pretty cool - thanks for the contribution.

On my local machine...

• make test runs in 24 seconds (down from 50 seconds on main) ✅
• make doctest speed is unchanged❓

I guess I just have some questions to make sure I understand this

• mock_sample_for_doctest kind of looks transparent in that we're overriding pm.sample with pymc.testing.mock_sample. Though that's not working or doing much?
• mock_pymc_sample is provided as an input to tests (like test_did for example) but it's never used anywhere in those test functions. So this is a bit confusing. Does this make the use of sample_kwargs irrelevant now?

[williambdean]

Noticing that too. Weird thing is pytest --doctest-modules seems to work for me but pytest --doctest-modules causalpy/ does not