Integrate MaxText CI with Codecov#2864
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Integrates Codecov using a two-flag scheme (regular, scheduled) and carryforward logic to accurately track coverage across tiered test suites. Adds codecov.yml to enable carryforward for tests skipped in PRs (scheduled_only). Updates test workflows to generate coverage reports via pytest-cov and upload results with conditional flags. Sets Project coverage to track the full scheduled baseline and Patch coverage to evaluate new code against regular PR tests.
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Integrates code coverage (Codecov) in MaxText. The complexity of doing so stems from the fact that we don't always run the same set of tests -- PRs run a subset of tests, while tests marked as scheduled_only are executed only on scheduled runs. In this PR we use a two-flag scheme (regular, scheduled) and carryforward logic to accurately track coverage.
This PR adds codecov.yml to enable carryforward for tests skipped in PRs (scheduled_only). Updates test workflows to generate coverage reports via pytest-cov and upload results with conditional flags. We also set Project coverage to track the full scheduled baseline and Patch coverage to evaluate new code against regular PR tests. A 5% regression in coverage will fail a PR or test run.
Tests
Testing in CI.
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