feat(ci): add coverage.py measurement and 82% threshold enforcement#278
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…114) Integrates pytest-cov into the test suite and CI pipeline so that branch gaps in exporter/exporter.py (especially error paths in collect()) are automatically detectable. Baseline measured at 85%; threshold set to 82% as a regression buffer. - pyproject.toml: new file with [tool.pytest.ini_options] (--cov flags), [tool.coverage.run] (branch=true), and [tool.coverage.report] (fail_under=82, standard exclude_lines) - pixi.toml: adds pytest-cov>=5.0 dependency and test-unit task - justfile: test recipe delegates to pixi run test-unit - ci.yml: new unit-tests job runs pixi run test-unit and uploads coverage.xml as a workflow artifact - .gitignore: excludes .coverage, htmlcov/, coverage.xml, .pytest_cache/ Closes #114 Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
…ixi.lock - Close unclosed parenthesis in test_loki_datasource_url_uses_proxy (SyntaxError causing pytest collection failure) - Regenerate pixi.lock with pixi v0.67.2 after adding pytest-cov dependency Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
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Summary
pytest-covto pixi dependencies and wires coverage measurement into every test run viapyproject.tomladdoptsfail_under = 82) — measured baseline is 85%, buffer guards against regressionstest-unitpixi task and updatedjust testrecipe give developers and CI an identical invocationunit-testsjob inci.ymlrunspixi run test-unitand uploadscoverage.xmlas a downloadable artifact.gitignoreupdated to exclude generated coverage artifactsTest plan
pixi run test-unitexits 0 — 102 tests pass, 85% coverage ≥ 82% thresholdcoverage.xmlandhtmlcov/generated and gitignored (not shown ingit status)pyproject.tomlparses without error (tomllib.loadexits 0)114-auto-implCloses #114
Part of #100
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