Agent-Skills.md

Agent Skills: Test Writer

Write tests with TDD. Supports Jest, Cypress, Detox, PHPUnit, PyTest, Go testing.

UncategorizedID: nguyenthienthanh/aura-frog/test-writer

Repository

nguyenthienthanh/aura-frog
nguyenthienthanh
142

Install this agent skill to your local

pnpm dlx add-skill https://github.com/nguyenthienthanh/aura-frog/tree/HEAD/aura-frog/skills/test-writer

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aura-frog/skills/test-writer/SKILL.md

Skill Metadata

Name
test-writer
Description
"Write tests with TDD. Supports Jest, Cypress, Detox, PHPUnit, PyTest, Go testing."

Test Writer

When to Use

  • Adding tests, improving coverage, creating test suites, TDD (Phase 2/3)
  • NOT for: bug fixes (→ bugfix-quick), full features (→ workflow-orchestrator)

Process

  1. Load test patterns from .claude/cache/test-patterns.json if exists (framework, imports, mock style, naming convention). Otherwise detect from package.json/pyproject.toml.

  2. Analyze target — read file, identify testable units, list dependencies to mock.

  3. Write tests:

    • TDD (new code): Write failing tests (RED) → implement (GREEN) → refactor
    • Existing code: Write passing tests → add edge cases → add error handling tests

  4. Verify coverage — run tests with coverage flag, check against 80% target (or project-specific).

Test Strategy

types[3]{type,scope,when}:
  Unit,"Single function/component with mocked deps","Default for most code"
  Integration,"Module interactions + API calls","Data layers + service boundaries"
  E2E,"Complete user flows with real deps","Critical paths (login checkout payment)"

Coverage Targets

coverage[4]{scope,target}:
  Critical paths (auth/payment),100%
  Business logic,90%
  UI / utilities,80%
  Overall minimum,80%

Test Quality Rules

  • AAA pattern: Arrange, Act, Assert
  • "should...when..." naming: it('should display error when API returns 400')
  • One concern per test
  • Test behavior, not implementation
  • Mock external dependencies only
  • Cover: happy path + errors + edge cases + boundaries

File Naming

naming[6]{framework,pattern,location}:
  Jest,"*.test.ts / *.spec.ts","__tests__/ or alongside"
  PHPUnit,"*Test.php","tests/Unit/ tests/Feature/"
  PyTest,"test_*.py","tests/"
  Go,"*_test.go","Same package"
  Detox,"*.e2e.ts","e2e/"
  Cypress,"*.cy.ts","cypress/e2e/"

Running Tests

commands[5]{framework,test,coverage}:
  Jest/Vitest,"npm test","npm test -- --coverage"
  PHPUnit,"./vendor/bin/phpunit","--coverage-html coverage"
  PyTest,"pytest","pytest --cov=. --cov-report=html"
  Go,"go test ./...","go test -coverprofile=coverage.out ./..."
  Detox,"detox test --configuration ios.sim.debug",N/A