test-automation-strategy

Test Automation Strategy

<default_to_action> When designing or improving test automation:

1. DETECT anti-patterns: Ice cream cone? Slow suite? Flaky tests?
2. USE patterns: Page Object Model, Builder pattern, Factory pattern
3. INTEGRATE in CI/CD: Every commit runs tests, fail fast
4. MANAGE flaky tests: Quarantine, fix, or delete - never ignore

Quick Anti-Pattern Detection:

• Ice cream cone (many E2E, few unit) → Invert to pyramid
• Slow tests (> 10 min suite) → Parallelize, mock external deps
• Flaky tests → Fix timing, isolate data, or quarantine
• Brittle selectors → Use data-testid, semantic locators </default_to_action>

Quick Reference Card

When to Use

• Building new automation framework
• Improving existing test efficiency
• Reducing flaky test burden
• Optimizing CI/CD pipeline speed

Anti-Patterns to Detect

Problem	Symptom	Fix
Ice cream cone	80% E2E, 10% unit	Invert pyramid
Slow suite	30+ min CI	Parallelize, prune
Flaky tests	Random failures	Quarantine, fix timing
Coupled tests	Order-dependent	Isolate data
Brittle selectors	Break on CSS change	Use data-testid

---

CI/CD Integration

name: Test Pipeline
on: [push, pull_request]

jobs:
  unit-tests:
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v4
      - run: npm ci
      - run: npm run test:unit -- --coverage
        timeout-minutes: 5
      - uses: codecov/codecov-action@v3

  integration-tests:
    needs: unit-tests
    runs-on: ubuntu-latest
    services:
      postgres:
        image: postgres:15
    steps:
      - run: npm run test:integration
        timeout-minutes: 10

  e2e-tests:
    needs: integration-tests
    runs-on: ubuntu-latest
    steps:
      - run: npx playwright test
        timeout-minutes: 15

---

Flaky Test Management

// Quarantine flaky tests
describe.skip('Quarantined - INC-123', () => {
  test('flaky test awaiting fix', () => { /* ... */ });
});

// Agent-assisted stabilization
await Task("Fix Flaky Tests", {
  tests: quarantinedTests,
  analysis: ['timing-issues', 'data-isolation', 'race-conditions'],
  strategies: ['add-waits', 'isolate-fixtures', 'mock-externals']
}, "qe-flaky-test-hunter");

---

Agent-Assisted Automation

// Generate tests following pyramid
await Task("Generate Test Suite", {
  sourceCode: 'src/',
  pyramid: { unit: 70, integration: 20, e2e: 10 },
  patterns: ['page-object', 'builder', 'factory'],
  framework: 'jest'
}, "qe-test-generator");

// Optimize test execution
await Task("Optimize Suite", {
  algorithm: 'johnson-lindenstrauss',
  targetReduction: 0.3,
  maintainCoverage: 0.95
}, "qe-regression-risk-analyzer");

// Analyze flaky patterns
await Task("Flaky Analysis", {
  testHistory: 'last-30-days',
  detectPatterns: ['timing', 'data', 'environment'],
  recommend: 'stabilization-strategy'
}, "qe-flaky-test-hunter");

---

Agent Coordination Hints

Memory Namespace

aqe/automation/
├── test-pyramid/*        - Coverage by layer
├── page-objects/*        - Shared page objects
├── flaky-registry/*      - Quarantined tests
└── execution-metrics/*   - Suite performance data

Fleet Coordination

const automationFleet = await FleetManager.coordinate({
  strategy: 'test-automation',
  agents: [
    'qe-test-generator',         // Generate pyramid-compliant tests
    'qe-test-executor',          // Parallel execution
    'qe-coverage-analyzer',      // Coverage gaps
    'qe-flaky-test-hunter',      // Flaky detection
    'qe-regression-risk-analyzer' // Smart selection
  ],
  topology: 'hierarchical'
});

---

Related Skills

• tdd-london-chicago - TDD for unit tests
• api-testing-patterns - Integration patterns
• cicd-pipeline-qe-orchestrator - Pipeline integration
• shift-left-testing - Early automation

---

Remember

With Agents: Agents generate pyramid-compliant tests, detect flaky patterns, optimize execution time, and maintain test infrastructure. Use agents to scale automation quality.

Gotchas

• Agent generates 80% E2E tests and 20% unit tests (inverted pyramid) — explicitly enforce 70/20/10 ratio
• Page Object Model tests become brittle when selectors change — prefer data-testid attributes over CSS selectors
• Flaky tests quarantined but never fixed is technical debt — set a 2-week SLA to fix or delete
• Agent treats test code as second-class — test code needs the same review standards as production code
• Parallel test execution requires test isolation — shared state between tests causes non-deterministic failures