# Run Tests

> Execute test suites and report results. Use when validating code functionality.

- Skill: `majiayu000/run-tests-9` (Agent Skill, multi-file: 2 files)
- Install (CLI): `npx skillmds add majiayu000/run-tests-9`
- Raw SKILL.md: https://api.skillmd.com/api/skills/majiayu000/run-tests-9/raw
- Safety review: pending
- Works with: Claude Code, Claude.ai, OpenAI Codex
- Category: Docs & Writing
- Author: majiayu000 (https://skillmd.com/u/majiayu000)
- Updated: 2026-09-09
- Page: https://skillmd.com/skills/majiayu000/run-tests-9

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# Run Tests

Execute test suites to verify code functionality and identify regressions or failures.

## When to Use

- Pre-commit validation
- Running tests after changes
- Verifying test suite passes
- Generating test reports

## Quick Reference

```bash
# Run all tests with Mojo
pixi run mojo test -I . tests/

# Run specific test file
mojo test -I . tests/shared/core/test_example.mojo

# Run with verbose output
mojo test -I . tests/ -v

# Python pytest
pytest tests/
pytest tests/ -v --tb=short
```

## Workflow

1. **Set up test environment**: Ensure all dependencies installed
2. **Select tests**: Choose which test suite or specific tests to run
3. **Execute tests**: Run test runner with appropriate options
4. **Review results**: Check pass/fail status and output
5. **Debug failures**: Investigate and fix failing tests

## Output Format

Test results:

- Total tests run
- Passed/failed/skipped counts
- Failure details (assertion message, stack trace)
- Execution time per test
- Test coverage metrics (if applicable)

## References

- See `generate-tests` skill for creating tests
- See `calculate-coverage` skill for coverage analysis
- See CLAUDE.md > TDD in Key Development Principles