Test Until Green
Run your test suite, fix the smallest root cause on failure, and repeat until every test passes.
Kickoff prompt
Start the "Test Until Green" loop.
Goal: all tests pass
Max iterations: 10
Between iterations run: npm test
Exit when: tests exit 0
Step 1: Run tests. If there are failures, fix the smallest root cause, then repeat.
Self-pace this loop. After each iteration, run the check command, read the output, and only continue if the exit condition is not met. Stop when the exit condition passes or max iterations is reached. Give a short status update each pass.Basic information
Category
Testing
Goal
all tests pass
Max iterations
10
Check command
npm test
Exit when
tests exit 0
Supported agents
Cursor, Claude Code
Steps
- 1
Run tests
Run the project test command and capture failures.
npm test - 2
Fix failures
Fix the smallest root cause for the current failing tests. Prefer minimal diffs.
- 3
Re-run tests
Run tests again and verify progress toward zero failures.
npm test
More Testing loops
Build Until Green
Run the production build, fix compile and bundling errors, and loop until the build succeeds.
Coverage Until Threshold
Add focused tests until coverage meets your threshold (e.g. 80%), without changing production behavior unnecessarily.
Pre-Commit Guard
Hook that runs tests before git commit commands to block commits when the suite is red.
Post-Edit Test Guard
Hook-based loop that runs related tests after file edits to catch regressions early.
Format Until Clean
Run the formatter, fix any remaining style issues, and loop until the codebase formats cleanly with no diffs.
Flaky Test Triage
Run failing tests repeatedly, classify each failure as flaky or real, and fix only confirmed regressions.