Qe Test Generation

# Generate unit tests for a file
aqe test generate --file src/services/UserService.ts --framework jest

# Generate tests with coverage target
aqe test generate --scope src/api/ --coverage 90 --type unit

# Generate integration tests
aqe test generate --file src/controllers/AuthController.ts --type integration

# Generate from patterns
aqe test generate --pattern repository --target src/repositories/

// Spawn test generation agents — durable-first
Task("Generate durable-first tests", `
  Analyze src/services/PaymentService.ts and generate Jest tests in tier order.
  1. DURABLE (write these first, >=1 per public method):
     - Invariants ("a refund never makes a balance negative")
     - Contract/schema checks on inputs and outputs crossing the boundary
     - Property-based tests (fast-check) over input ranges, not single examples
  2. EPHEMERAL (the red-green loop; tag '// @tier ephemeral'):
     - Specific happy-path examples and error paths
     - Mock external dependencies ONLY — never let a mock-call assertion be the
       only test for a method
  Apply the language-swap check: if a Python rewrite of PaymentService would break
  the test, move it up to the durable tier.
  Output to tests/unit/services/PaymentService.test.ts
`, "qe-test-architect")

// Property + contract generation (first-class, not opt-in)
Task("Generate property and contract tests", `
  For src/repositories/, derive:
  - Properties: round-trip (write→read returns same), idempotence, ordering invariants
  - Contracts: the repository interface schema, enforced on every CRUD result
  These survive a storage-engine swap; example-based CRUD tests do not.
`, "qe-property-tester")

await testGenerator.analyzeAndGenerate({
  source: 'src/services/OrderService.ts',
  analysis: {
    methods: true,
    branches: true,
    dependencies: true,
    errorPaths: true
  },
  output: {
    framework: 'jest',
    style: 'describe-it',
    assertions: 'expect'
  }
});

await testGenerator.applyPattern({
  pattern: 'service-layer',
  targets: ['src/services/*.ts'],
  customizations: {
    mockStrategy: 'jest.mock',
    asyncHandling: 'async-await',
    errorAssertion: 'toThrow'
  }
});

await testGenerator.fillCoverageGaps({
  coverageReport: 'coverage/lcov.info',
  targetCoverage: 90,
  prioritize: ['uncovered-branches', 'error-paths'],
  maxTests: 50
});

quality_checks:
  durability:                  # the primary check (ADR-113)
    durable_assertions_per_target: 1   # >=1 invariant/contract/property each
    language_swap_safe: true           # would survive a reimplementation
    tier_tags_present: true            # every test tagged durable|ephemeral|live

  fault_detection:             # do the tests actually catch bugs?
    mutation_score_min: 0.6            # kill rate against seeded mutants
    no_assertionless_tests: true       # reject tests that kill 0 mutants

  assertions:
    minimum_per_test: 1
    meaningful: true

  isolation:
    no_shared_state: true
    proper_setup_teardown: true

  naming:
    descriptive: true
    follows_convention: true

  coverage:                    # necessary but NOT sufficient — see fault_detection
    branches: 80
    statements: 85