npm test in CI

npm test is the conventional entry point for your test suite.

Most CI configs call npm test. The CI environment variable changes some runners to non-interactive, non-watch mode automatically.

Common usage

• npm test - run the test script
• npm test -- --ci - pass CI flags
• CI=true - many tools auto-detect this

Example in CI

Run tests with a JUnit reporter for the dashboard.

CI=true npm test -- --reporters=default --reporters=jest-junit

In CI

Ensure your test command exits and does not start a watcher. Jest/Vitest watch is disabled when CI is set, but verify in your config.

Key takeaways

• CI=true disables watch mode in many runners.
• Emit JUnit XML for CI dashboards.
• A failing test exits non-zero and fails the job.

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