Qe Test Design Techniques

// Age field: 18-120 valid
const boundaryTests = [
  { input: 17, expected: 'invalid' },  // Below min
  { input: 18, expected: 'valid' },    // Min boundary
  { input: 19, expected: 'valid' },    // Above min
  { input: 119, expected: 'valid' },   // Below max
  { input: 120, expected: 'valid' },   // Max boundary
  { input: 121, expected: 'invalid' }  // Above max
];

// Discount rules:
// 1-10:  No discount
// 11-100: 10% discount
// 101+:   20% discount

const partitionTests = [
  { quantity: -1, expected: 'invalid' },  // Invalid partition
  { quantity: 5, expected: 0 },           // Partition 1: 1-10
  { quantity: 50, expected: 0.10 },       // Partition 2: 11-100
  { quantity: 200, expected: 0.20 }       // Partition 3: 101+
];

// 4 tests cover all behavior (vs 200+ if testing every value)

Loan Approval Rules:
┌──────────────┬───────┬───────┬───────┬───────┬───────┐
│ Conditions   │ R1    │ R2    │ R3    │ R4    │ R5    │
├──────────────┼───────┼───────┼───────┼───────┼───────┤
│ Age ≥ 18     │ Yes   │ Yes   │ Yes   │ No    │ Yes   │
│ Credit ≥ 700 │ Yes   │ Yes   │ No    │ Yes   │ No    │
│ Income ≥ 50k │ Yes   │ No    │ Yes   │ Yes   │ Yes   │
├──────────────┼───────┼───────┼───────┼───────┼───────┤
│ Result       │Approve│Approve│Reject │Reject │Reject │
└──────────────┴───────┴───────┴───────┴───────┴───────┘

// 5 tests cover all decision combinations

States: Logged Out → Logged In → Premium → Suspended

Valid Transitions:
- Login: Logged Out → Logged In
- Upgrade: Logged In → Premium
- Payment Fail: Premium → Suspended
- Logout: Any → Logged Out

Invalid Transitions to Test:
- Logged Out → Premium (should reject)
- Suspended → Premium (should reject)

test('cannot upgrade without login', async () => {
  const result = await user.upgrade(); // While logged out
  expect(result.error).toBe('Login required');
});

// Parameters:
// Browser: Chrome, Firefox, Safari (3)
// OS: Windows, Mac, Linux (3)
// Screen: Desktop, Tablet, Mobile (3)

// All combinations: 3 × 3 × 3 = 27 tests
// Pairwise: 9 tests cover all pairs

const pairwiseTests = [
  { browser: 'Chrome', os: 'Windows', screen: 'Desktop' },
  { browser: 'Chrome', os: 'Mac', screen: 'Tablet' },
  { browser: 'Chrome', os: 'Linux', screen: 'Mobile' },
  { browser: 'Firefox', os: 'Windows', screen: 'Tablet' },
  { browser: 'Firefox', os: 'Mac', screen: 'Mobile' },
  { browser: 'Firefox', os: 'Linux', screen: 'Desktop' },
  { browser: 'Safari', os: 'Windows', screen: 'Mobile' },
  { browser: 'Safari', os: 'Mac', screen: 'Desktop' },
  { browser: 'Safari', os: 'Linux', screen: 'Tablet' }
];
// Each pair appears at least once

// Auto-generate BVA tests
await Task("Generate BVA Tests", {
  field: 'age',
  dataType: 'integer',
  constraints: { min: 18, max: 120 }
}, "qe-test-generator");
// Returns: 6 boundary test cases

// Auto-generate pairwise tests
await Task("Generate Pairwise Tests", {
  parameters: {
    browser: ['Chrome', 'Firefox', 'Safari'],
    os: ['Windows', 'Mac', 'Linux'],
    screen: ['Desktop', 'Tablet', 'Mobile']
  }
}, "qe-test-generator");
// Returns: 9-12 tests (vs 27 full combination)

aqe/test-design/
├── bva-analysis/*       - Boundary value tests
├── partitions/*         - Equivalence partitions
├── decision-tables/*    - Decision table tests
└── pairwise/*           - Combinatorial reduction

const designFleet = await FleetManager.coordinate({
  strategy: 'systematic-test-design',
  agents: [
    'qe-test-generator',    // Apply design techniques
    'qe-coverage-analyzer', // Analyze coverage
    'qe-quality-analyzer'   // Assess test quality
  ],
  topology: 'sequential'
});