Argument	Scope
Empty/`all`	All tests
`backend`	Backend only
`frontend`	Frontend only
`path/to/test.py`	Specific file
`test_name`	Specific test

Phase 1: Execute Tests

# Backend with coverage
cd backend
poetry run pytest tests/unit/ -v --tb=short \
  --cov=app --cov-report=term-missing

# Frontend with coverage
cd frontend
npm run test -- --coverage

Phase 2: Failure Analysis

If tests fail, launch 3 parallel analyzers:

Backend Failure Analysis - Root cause, fix suggestions
Frontend Failure Analysis - Component issues, mock problems
Coverage Gap Analysis - Low coverage areas

Phase 3: Generate Report

# Test Results Report

## Summary
| Suite | Total | Passed | Failed | Coverage |
|-------|-------|--------|--------|----------|
| Backend | X | Y | Z | XX% |
| Frontend | X | Y | Z | XX% |

## Status: [ALL PASS | SOME FAILURES]

## Failures (if any)
| Test | Error | Fix |
|------|-------|-----|
| test_name | AssertionError | [suggestion] |

Quick Commands

# All backend tests
poetry run pytest tests/unit/ -v --tb=short

# With coverage
poetry run pytest tests/unit/ --cov=app

# Quick (no tracebacks)
poetry run pytest tests/unit/ --tb=no -q

# Specific test
poetry run pytest tests/unit/ -k "test_name" -v

# Frontend
npm run test -- --coverage

# Watch mode
npm run test -- --watch

Key Options

Option	Purpose
`--maxfail=3`	Stop after 3 failures
`-x`	Stop on first failure
`--lf`	Run only last failed
`-v`	Verbose output
`--tb=short`	Shorter tracebacks

Related Skills

unit-testing - Unit test patterns and best practices
integration-testing - Integration test patterns for component interactions
e2e-testing - End-to-end testing with Playwright
test-data-management - Test data fixtures and factories

Key Decisions

Decision	Choice	Rationale
Parallel Analyzers	3 agents	Backend, frontend, and coverage analysis in parallel
Default Traceback	`--tb=short`	Balance between detail and readability
Stop Threshold	`--maxfail=3`	Quick feedback without overwhelming output
Coverage Tool	pytest-cov / jest	Native integration with test frameworks

References

Test Commands

run-tests

Run Tests

Quick Start

Test Scope