kobotoolbox / kpi / 12124740746

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master: 76%

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github

ci: skip tests if unaffected TASK-1316 (#5295)

### 💭 Notes

Trigger PR workflows based on files affected.

The lists of path matchers corresponding to pytest, npm-test, darker are 
in .github/filters.yml.

For a given CI run, the "Detect changed files" step shows a list of files
changed and which filters were matched by them. You can inspect this on
GitHub:

-> Click "Details" on a PR step 
-> Click the "changes" job
-> Expand the "Detect Changed Files" step
-> Expand individual logs to see:
  - list of files changed
  - list of filters triggered

Ideally, these filters always match whenever a PR has any chance of affecting
a job's pass/fail result.

### 👀 Preview steps

1. 🟢 See the "Checks" section of this PR, or screenshots in the description
2. 🟢 Notice the addition of the "ci / changes" job, which runs first and may
  cause pytest, npm-test, or darker to be skipped if no relevant
  files are changed

5645 of 9120 branches covered (61.9%)

21615 of 27000 relevant lines covered (80.06%)

0.8 hits per line