Testing Strategy, Quality Assurance, and Validation
Version: 1.0
Classification: Internal Engineering
Last Updated: January 2026
Table of Contents
- Testing Strategy
- Unit Testing
- Integration Testing
- End-to-End Testing
- Load & Performance Testing
- Security Testing
- Regression Testing
- UAT Process
- Quality Gates
1. Testing Strategy
1.1 Testing Pyramid
┌─────────────────────────────────────────────────────────────────────────────┐
│ TESTING PYRAMID │
└─────────────────────────────────────────────────────────────────────────────┘
╱╲
╱ ╲
╱ E2E╲ ~10% of tests
╱ Tests╲ Slow, high confidence
╱────────╲
╱ ╲
╱ Integration╲ ~20% of tests
╱ Tests ╲ Medium speed, medium confidence
╱────────────────╲
╱ ╲
╱ Unit Tests ╲ ~70% of tests
╱ ╲ Fast, focused
╱────────────────────────╲
1.2 Test Coverage Targets
| Layer | Target Coverage | Current |
|---|
| Unit Tests | 80% | 82% |
| Integration Tests | 70% | 75% |
| E2E Tests | Critical paths | 100% |
| Overall | 80% | 81% |
1.3 Test Organization
tests/
├── unit/ # Unit tests
│ ├── lib/ # Library function tests
│ ├── services/ # Service layer tests
│ └── utils/ # Utility function tests
├── integration/ # Integration tests
│ ├── api/ # API endpoint tests
│ ├── database/ # Database integration tests
│ └── services/ # Service integration tests
├── e2e/ # End-to-end tests
│ ├── flows/ # User flow tests
│ └── smoke/ # Smoke tests
├── load/ # Load/performance tests
└── fixtures/ # Test fixtures and mocks
2. Unit Testing
2.1 Unit Test Standards
| Standard | Requirement |
|---|
| Framework | Vitest |
| Coverage tool | c8 / Vitest built-in |
| Mocking | vi.mock(), vi.spyOn() |
| Assertions | Vitest expect() |
| Naming | describe → it → expect |
2.2 Unit Test Examples
// tests/unit/services/health-score.test.ts
describe("Health Score Service", () => {
describe("calculateHealthScore", () => {
it("should return 100 for perfect engagement", async () => {
const account = {
id: "acc_123",
engagement: { loginDays: 30, featureUsage: 100 },
support: { openTickets: 0, csat: 5 },
billing: { paymentStatus: "current", daysOverdue: 0 },
};
const score = await calculateHealthScore(account);
expect(score.value).toBe(100);
expect(score.status).toBe("healthy");
});
it("should return at-risk for low engagement", async () => {
const account = {
id: "acc_123",
engagement: { loginDays: 2, featureUsage: 10 },
support: { openTickets: 5, csat: 2 },
billing: { paymentStatus: "overdue", daysOverdue: 30 },
};
const score = await calculateHealthScore(account);
expect(score.value).toBeLessThan(40);
expect(score.status).toBe("at_risk");
expect(score.riskFactors).toContain("low_engagement");
});
it("should handle missing data gracefully", async () => {
const account = { id: "acc_123" };
const score = await calculateHealthScore(account);
expect(score.value).toBe(50); // Default score
expect(score.status).toBe("needs_attention");
});
});
});
2.3 Mocking Patterns
// Mock external services
vi.mock("@/lib/openai", () => ({
generateCompletion: vi.fn().mockResolvedValue({
text: "Mocked AI response",
usage: { tokens: 100 },
}),
}));
// Mock database
vi.mock("@/lib/db", () => ({
query: vi.fn(),
transaction: vi.fn((fn) => fn({ query: vi.fn() })),
}));
// Spy on methods
const logSpy = vi.spyOn(console, "log");
expect(logSpy).toHaveBeenCalledWith("Expected message");
3. Integration Testing
3.1 Integration Test Matrix
| Component A | Component B | Test Coverage |
|---|
| API Routes | Database | CRUD operations |
| API Routes | Authentication | Auth flows |
| Services | External APIs | API calls |
| Webhooks | Event handlers | Event processing |
| Automations | All services | Automation triggers |
3.2 API Integration Tests
// tests/integration/api/accounts.test.ts
describe("Accounts API", () => {
let server: TestServer;
let authToken: string;
beforeAll(async () => {
server = await createTestServer();
const user = await createTestUser();
authToken = user.token;
});
afterAll(async () => {
await server.close();
});
describe("GET /v1/accounts", () => {
it("should return paginated accounts", async () => {
const response = await server.inject({
method: "GET",
url: "/v1/accounts?limit=10",
headers: { Authorization: `Bearer ${authToken}` },
});
expect(response.statusCode).toBe(200);
const body = JSON.parse(response.body);
expect(body.data).toBeInstanceOf(Array);
expect(body.meta.limit).toBe(10);
});
it("should filter by health score", async () => {
const response = await server.inject({
method: "GET",
url: "/v1/accounts?health_max=50",
headers: { Authorization: `Bearer ${authToken}` },
});
expect(response.statusCode).toBe(200);
const body = JSON.parse(response.body);
body.data.forEach((account: any) => {
expect(account.health_score).toBeLessThanOrEqual(50);
});
});
it("should require authentication", async () => {
const response = await server.inject({
method: "GET",
url: "/v1/accounts",
});
expect(response.statusCode).toBe(401);
});
});
describe("POST /v1/accounts", () => {
it("should create a new account", async () => {
const response = await server.inject({
method: "POST",
url: "/v1/accounts",
headers: {
Authorization: `Bearer ${authToken}`,
"Content-Type": "application/json",
},
payload: {
name: "Test Account",
domain: "test.com",
status: "prospect",
},
});
expect(response.statusCode).toBe(201);
const body = JSON.parse(response.body);
expect(body.data.name).toBe("Test Account");
expect(body.data.id).toMatch(/^acc_/);
});
it("should validate required fields", async () => {
const response = await server.inject({
method: "POST",
url: "/v1/accounts",
headers: {
Authorization: `Bearer ${authToken}`,
"Content-Type": "application/json",
},
payload: {},
});
expect(response.statusCode).toBe(400);
const body = JSON.parse(response.body);
expect(body.error.code).toBe("VALIDATION_ERROR");
});
});
});
3.3 Database Integration Tests
// tests/integration/database/accounts.test.ts
describe("Account Repository", () => {
let repo: AccountRepository;
beforeEach(async () => {
await resetTestDatabase();
repo = new AccountRepository(db);
});
it("should enforce RLS policies", async () => {
// Create account for org A
const accountA = await repo.create({
name: "Account A",
organization_id: "org_a",
});
// Try to access from org B context
await db.setContext({ organization_id: "org_b" });
const result = await repo.findById(accountA.id);
expect(result).toBeNull(); // RLS blocks access
});
it("should handle concurrent updates", async () => {
const account = await repo.create({ name: "Test" });
// Simulate concurrent updates
const [result1, result2] = await Promise.all([
repo.update(account.id, { name: "Update 1" }),
repo.update(account.id, { name: "Update 2" }),
]);
// Last write wins
const final = await repo.findById(account.id);
expect(["Update 1", "Update 2"]).toContain(final.name);
});
});
4. End-to-End Testing
4.1 E2E Test Framework
| Tool | Purpose |
|---|
| Playwright | Browser automation |
| Test fixtures | Setup/teardown |
| Page objects | Encapsulate pages |
| Visual regression | Screenshot comparison |
4.2 Critical User Flows
| Flow | Priority | Automated |
|---|
| User login | P0 | ✅ |
| Account creation | P0 | ✅ |
| Health score view | P0 | ✅ |
| Integration connect | P0 | ✅ |
| Automation create | P1 | ✅ |
| Document generation | P1 | ✅ |
| Settings update | P2 | ✅ |
| User invitation | P2 | ✅ |
4.3 E2E Test Examples
// tests/e2e/flows/account-management.test.ts
test.describe("Account Management", () => {
test.beforeEach(async ({ page }) => {
await page.goto("/login");
await page.fill('[data-testid="email"]', "test@example.com");
await page.fill('[data-testid="password"]', "testpassword");
await page.click('[data-testid="login-button"]');
await expect(page).toHaveURL("/dashboard");
});
test("should create a new account", async ({ page }) => {
await page.click('[data-testid="new-account-button"]');
await page.fill('[data-testid="account-name"]', "New Test Account");
await page.fill('[data-testid="account-domain"]', "newtest.com");
await page.selectOption('[data-testid="account-status"]', "prospect");
await page.click('[data-testid="save-button"]');
await expect(page.locator('[data-testid="success-toast"]')).toBeVisible();
await expect(page.locator('[data-testid="account-name"]')).toHaveText("New Test Account");
});
test("should display health score", async ({ page }) => {
await page.click('[data-testid="account-row"]:first-child');
const healthScore = page.locator('[data-testid="health-score"]');
await expect(healthScore).toBeVisible();
const scoreValue = await healthScore.textContent();
expect(parseInt(scoreValue!)).toBeGreaterThanOrEqual(0);
expect(parseInt(scoreValue!)).toBeLessThanOrEqual(100);
});
test("should filter accounts by status", async ({ page }) => {
await page.selectOption('[data-testid="status-filter"]', "active");
await page.waitForResponse("**/api/v1/accounts*");
const statusBadges = page.locator('[data-testid="status-badge"]');
const count = await statusBadges.count();
for (let i = 0; i < count; i++) {
await expect(statusBadges.nth(i)).toHaveText("Active");
}
});
});
4.4 Smoke Tests
// tests/e2e/smoke/api-smoke.test.ts
test.describe("API Smoke Tests", () => {
const API_URL = process.env.API_URL;
test("health endpoint is responding", async ({ request }) => {
const response = await request.get(`${API_URL}/health`);
expect(response.status()).toBe(200);
const body = await response.json();
expect(body.status).toBe("healthy");
});
test("accounts endpoint requires auth", async ({ request }) => {
const response = await request.get(`${API_URL}/v1/accounts`);
expect(response.status()).toBe(401);
});
test("accounts endpoint works with auth", async ({ request }) => {
const response = await request.get(`${API_URL}/v1/accounts`, {
headers: { Authorization: `Bearer ${process.env.TEST_API_KEY}` },
});
expect(response.status()).toBe(200);
});
});
5. Load & Performance Testing
5.1 Performance Targets
| Metric | Target | Acceptable |
|---|
| API Response (p50) | < 100ms | < 200ms |
| API Response (p95) | < 500ms | < 1000ms |
| API Response (p99) | < 1000ms | < 2000ms |
| Concurrent users | 1000 | 500 |
| Requests/second | 500 | 250 |
5.2 Load Test Scenarios
// tests/load/accounts-load.js (k6)
stages: [
{ duration: "2m", target: 100 }, // Ramp up
{ duration: "5m", target: 100 }, // Steady state
{ duration: "2m", target: 200 }, // Spike
{ duration: "5m", target: 200 }, // Sustained spike
{ duration: "2m", target: 0 }, // Ramp down
],
thresholds: {
http_req_duration: ["p(95)<500", "p(99)<1000"],
http_req_failed: ["rate<0.01"],
},
};
const API_URL = __ENV.API_URL;
const API_KEY = __ENV.API_KEY;
// List accounts
const listResponse = http.get(`${API_URL}/v1/accounts`, {
headers: { Authorization: `Bearer ${API_KEY}` },
});
check(listResponse, {
"list status is 200": (r) => r.status === 200,
"list response time OK": (r) => r.timings.duration < 500,
});
// Get single account
const accounts = JSON.parse(listResponse.body).data;
if (accounts.length > 0) {
const accountId = accounts[0].id;
const getResponse = http.get(`${API_URL}/v1/accounts/${accountId}`, {
headers: { Authorization: `Bearer ${API_KEY}` },
});
check(getResponse, {
"get status is 200": (r) => r.status === 200,
"get response time OK": (r) => r.timings.duration < 200,
});
}
sleep(1);
}
5.3 Performance Test Report
## Performance Test Report - 2026-01-07
### Test Configuration
- Duration: 16 minutes
- Max VUs: 200
- Target: Production API
### Results Summary
| Metric | Value | Target | Status |
| -------------- | ------ | ------ | ------ |
| Total Requests | 45,234 | - | - |
| Request Rate | 47.1/s | 50/s | ✅ |
| P50 Response | 85ms | 100ms | ✅ |
| P95 Response | 342ms | 500ms | ✅ |
| P99 Response | 876ms | 1000ms | ✅ |
| Error Rate | 0.02% | <1% | ✅ |
### Bottlenecks Identified
- Database connection pool saturated at 180 VUs
- Recommendation: Increase pool size from 20 to 50
### Action Items
- [ ] Increase connection pool
- [ ] Add caching for account list endpoint
- [ ] Review slow queries
6. Security Testing
6.1 Security Test Checklist
| Category | Test | Status |
|---|
| Authentication | Invalid tokens rejected | ✅ |
| Authentication | Expired tokens rejected | ✅ |
| Authentication | Rate limiting on login | ✅ |
| Authorization | RLS enforcement | ✅ |
| Authorization | RBAC enforcement | ✅ |
| Input Validation | SQL injection | ✅ |
| Input Validation | XSS prevention | ✅ |
| Input Validation | Path traversal | ✅ |
| Data Protection | PII exposure check | ✅ |
| Data Protection | Sensitive data in logs | ✅ |
6.2 Security Test Examples
// tests/security/injection.test.ts
describe("SQL Injection Prevention", () => {
it("should prevent SQL injection in search", async () => {
const server = await createTestServer();
const response = await server.inject({
method: "GET",
url: `/v1/accounts?search='; DROP TABLE accounts; --`,
headers: { Authorization: `Bearer ${validToken}` },
});
// Should not error, query should be escaped
expect(response.statusCode).toBe(200);
// Verify table still exists
const verifyResponse = await server.inject({
method: "GET",
url: "/v1/accounts",
headers: { Authorization: `Bearer ${validToken}` },
});
expect(verifyResponse.statusCode).toBe(200);
});
it("should prevent NoSQL injection", async () => {
const response = await server.inject({
method: "POST",
url: "/v1/accounts",
headers: {
Authorization: `Bearer ${validToken}`,
"Content-Type": "application/json",
},
payload: {
name: { $gt: "" }, // NoSQL injection attempt
},
});
expect(response.statusCode).toBe(400);
expect(JSON.parse(response.body).error.code).toBe("VALIDATION_ERROR");
});
});
6.3 Dependency Scanning
# GitHub Actions security scan
- name: Run security scan
uses: snyk/actions/node@master
with:
command: test
args: --severity-threshold=high
env:
SNYK_TOKEN: ${{ secrets.SNYK_TOKEN }}
- name: Check for vulnerabilities
run: |
npm audit --audit-level=high
if [ $? -ne 0 ]; then
echo "High severity vulnerabilities found!"
exit 1
fi
7. Regression Testing
7.1 Regression Test Suite
| Category | Tests | Run Frequency |
|---|
| Core API | 150 | Every PR |
| Integrations | 75 | Every PR |
| UI Critical Paths | 50 | Every PR |
| Full Regression | 400 | Nightly |
7.2 Regression Test Strategy
┌─────────────────────────────────────────────────────────────────────────────┐
│ REGRESSION TEST STRATEGY │
└─────────────────────────────────────────────────────────────────────────────┘
PR Created PR Approved Merged to Main
────────── ─────────── ──────────────
┌─────────────┐ ┌─────────────┐ ┌─────────────┐
│ Quick │ │ Full │ │ Nightly │
│ Tests │ │ PR Tests │ │ Full │
│ (~5 min) │ │ (~15 min) │ │ (~45 min) │
└─────────────┘ └─────────────┘ └─────────────┘
│ │ │
▼ ▼ ▼
• Unit tests • Unit tests • All unit tests
• Lint/typecheck • Integration tests • All integration
• Critical E2E • E2E critical paths • All E2E tests
• Security scan • Performance tests
• Visual regression
7.3 Flaky Test Management
// Mark flaky tests for tracking
test.skip("flaky test - tracked in #123", async () => {
// Test code
});
// Retry flaky tests
test.describe("Network-dependent tests", () => {
test.describe.configure({ retries: 2 });
test("external API call", async () => {
// Test code
});
});
8. UAT Process
8.1 UAT Workflow
┌─────────────────────────────────────────────────────────────────────────────┐
│ UAT WORKFLOW │
└─────────────────────────────────────────────────────────────────────────────┘
PREPARE EXECUTE COMPLETE
─────── ─────── ────────
┌─────────────┐ ┌─────────────┐ ┌─────────────┐
│ Deploy to │───────▶│ Execute │───────▶│ Review │
│ Staging │ │ Test Cases │ │ Results │
└─────────────┘ └─────────────┘ └─────────────┘
│ │ │
▼ ▼ ▼
┌─────────────┐ ┌─────────────┐ ┌─────────────┐
│ Notify │ │ Log │ │ Sign-off │
│ Testers │ │ Results │ │ or Fix │
└─────────────┘ └─────────────┘ └─────────────┘
8.2 UAT Test Case Template
## UAT Test Case: TC-001
**Feature:** Account Creation
**Priority:** High
**Tester:** [Name]
**Date:** [Date]
### Preconditions
- User is logged in
- User has "Member" or higher role
### Test Steps
1. Navigate to Accounts page
2. Click "New Account" button
3. Fill in required fields:
- Name: "UAT Test Account"
- Domain: "uattest.com"
- Status: "Prospect"
4. Click "Save"
### Expected Results
- Account is created successfully
- Success toast is displayed
- User is redirected to account detail page
- Account appears in account list
### Actual Results
[To be filled during testing]
### Status
[ ] Pass
[ ] Fail
[ ] Blocked
### Notes
[Any observations or issues]
8.3 UAT Sign-off
## UAT Sign-off Document
**Release:** v1.5.0
**Date:** 2026-01-07
**Environment:** Staging
### Test Summary
| Category | Total | Passed | Failed | Blocked |
| ------------- | ----- | ------ | ------ | ------- |
| Core Features | 25 | 24 | 1 | 0 |
| New Features | 10 | 10 | 0 | 0 |
| Regression | 30 | 30 | 0 | 0 |
### Critical Issues
- None
### Minor Issues
- TC-015: UI alignment issue on mobile (P3, fix in v1.5.1)
### Sign-off
- [ ] Product Owner: [Name] - [Date]
- [ ] QA Lead: [Name] - [Date]
- [ ] Engineering Lead: [Name] - [Date]
### Approval for Production Release
☑️ Approved for release
9. Quality Gates
9.1 PR Quality Gates
| Gate | Threshold | Required |
|---|
| Unit test coverage | > 80% | Yes |
| All tests passing | 100% | Yes |
| No lint errors | 0 | Yes |
| No type errors | 0 | Yes |
| Security scan | No high/critical | Yes |
| Code review | 1 approval | Yes |
| Performance regression | < 10% degradation | Yes |
9.2 Release Quality Gates
| Gate | Threshold | Required |
|---|
| All PR gates passed | Yes | Yes |
| E2E tests passing | 100% | Yes |
| Staging smoke tests | 100% | Yes |
| UAT sign-off | Approved | Yes |
| Security review | Approved | For major releases |
| Performance benchmarks | Within targets | Yes |
9.3 Quality Metrics Dashboard
┌─────────────────────────────────────────────────────────────────────────────┐
│ QUALITY METRICS DASHBOARD │
└─────────────────────────────────────────────────────────────────────────────┘
Code Coverage Test Success Build Health
───────────── ──────────── ────────────
████████████ 82% ████████████ 100% ████████████ 98%
Target: 80% ✅ Target: 100% ✅ Target: 95% ✅
Bug Escape Rate Mean Time to Fix Technical Debt
─────────────── ─────────────── ──────────────
██░░░░░░░░░░ 2% ████████░░░░ 4h ████████░░░░ 15%
Target: <5% ✅ Target: <8h ✅ Target: <20% ✅
IntegrateWise Testing & Quality Documentation
Version 1.0 — January 2026
For questions: qa@integratewise.com