# Testing Guide: [Feature Name]

## Overview
Brief description of what feature/component is being tested and its main functionality.

## Test Strategy

### Testing Scope
- **In Scope**: What will be tested
- **Out of Scope**: What won't be tested in this phase
- **Dependencies**: External services or components needed

### Test Types
- [ ] Unit Tests
- [ ] Integration Tests
- [ ] API Tests
- [ ] End-to-End Tests
- [ ] Performance Tests
- [ ] Security Tests
- [ ] Accessibility Tests

## Test Scenarios

### ✅ Happy Path Scenarios
- [ ] **Scenario 1**: User successfully [performs main action]
  - **Given**: [Initial conditions]
  - **When**: [User action]
  - **Then**: [Expected result]

- [ ] **Scenario 2**: System handles valid input correctly
  - **Given**: [Setup conditions]
  - **When**: [Input provided]
  - **Then**: [Expected behavior]

### ⚠️ Edge Cases
- [ ] **Empty/Null Data**: System handles empty or null inputs
- [ ] **Boundary Values**: Maximum/minimum allowed values
- [ ] **Special Characters**: Unicode, SQL injection attempts
- [ ] **Large Data Sets**: Performance with large amounts of data
- [ ] **Concurrent Users**: Multiple users accessing same resource

### ❌ Error Scenarios
- [ ] **Invalid Input**: System rejects invalid data with proper errors
- [ ] **Network Failures**: Handles network timeouts gracefully
- [ ] **Server Errors**: Displays appropriate error messages
- [ ] **Authentication Failures**: Proper handling of auth errors
- [ ] **Permission Denied**: Appropriate access control

## Automated Test Implementation

### Unit Tests
```typescript
// Jest unit test example
describe('[ComponentName]', () => {
  beforeEach(() => {
    // Setup before each test
  });

  afterEach(() => {
    // Cleanup after each test
  });

  describe('Happy Path', () => {
    it('should [expected behavior] when [condition]', () => {
      // Arrange
      const input = { /* test data */ };
      
      // Act
      const result = functionUnderTest(input);
      
      // Assert
      expect(result).toEqual(expectedOutput);
    });
  });

  describe('Error Handling', () => {
    it('should throw error when [invalid condition]', () => {
      const invalidInput = { /* invalid data */ };
      
      expect(() => {
        functionUnderTest(invalidInput);
      }).toThrow('Expected error message');
    });
  });
});
```

### API Integration Tests
```typescript
// API test example
describe('API: [Endpoint Name]', () => {
  beforeAll(async () => {
    // Setup test database
    await setupTestDb();
  });

  afterAll(async () => {
    // Cleanup test database
    await cleanupTestDb();
  });

  it('should return success with valid data', async () => {
    const testData = {
      field1: 'test value',
      field2: 123
    };

    const response = await request(app)
      .post('/api/endpoint')
      .send(testData)
      .expect(200);

    expect(response.body).toMatchObject({
      success: true,
      data: expect.objectContaining(testData)
    });
  });

  it('should return 400 for invalid data', async () => {
    const invalidData = {
      field1: '', // Invalid
      field2: 'not a number' // Invalid
    };

    const response = await request(app)
      .post('/api/endpoint')
      .send(invalidData)
      .expect(400);

    expect(response.body.success).toBe(false);
    expect(response.body.error.code).toBe('VALIDATION_ERROR');
  });
});
```

### End-to-End Tests
```typescript
// Playwright E2E test example
import { test, expect } from '@playwright/test';

test.describe('[Feature Name] E2E Tests', () => {
  test.beforeEach(async ({ page }) => {
    // Setup: Login user, navigate to feature
    await page.goto('/login');
    await page.fill('[data-testid="email"]', 'test@example.com');
    await page.fill('[data-testid="password"]', 'password123');
    await page.click('[data-testid="login-button"]');
    await page.waitForURL('/dashboard');
  });

  test('should complete full user workflow', async ({ page }) => {
    // Navigate to feature
    await page.goto('/feature-page');
    
    // Perform main user action
    await page.fill('[data-testid="input-field"]', 'test input');
    await page.click('[data-testid="submit-button"]');
    
    // Verify result
    await expect(page.locator('[data-testid="success-message"]')).toBeVisible();
    await expect(page.locator('[data-testid="result"]')).toContainText('Expected result');
  });

  test('should show validation errors', async ({ page }) => {
    await page.goto('/feature-page');
    
    // Submit without required data
    await page.click('[data-testid="submit-button"]');
    
    // Verify error messages
    await expect(page.locator('[data-testid="error-message"]')).toBeVisible();
    await expect(page.locator('[data-testid="error-message"]')).toContainText('Required field');
  });
});
```

## Manual Testing Checklist

### Functional Testing
- [ ] All required fields are properly validated
- [ ] Optional fields work correctly when empty
- [ ] Form submissions work as expected
- [ ] Navigation between screens functions properly
- [ ] Data persistence works correctly
- [ ] Error messages are clear and helpful

### User Experience Testing
- [ ] Interface is intuitive and easy to use
- [ ] Loading states are displayed appropriately
- [ ] Success/error feedback is clear
- [ ] Responsive design works on different screen sizes
- [ ] Performance is acceptable (< 3 seconds load time)

### Cross-Browser Testing
| Browser | Version | Status | Notes |
|---------|---------|--------|-------|
| Chrome | Latest | ⏳ | |
| Firefox | Latest | ⏳ | |
| Safari | Latest | ⏳ | |
| Edge | Latest | ⏳ | |

### Mobile Testing
| Device | Browser | Status | Notes |
|--------|---------|--------|-------|
| iPhone | Safari | ⏳ | |
| Android | Chrome | ⏳ | |
| Tablet | Safari/Chrome | ⏳ | |

### Accessibility Testing
- [ ] **Keyboard Navigation**: All interactive elements accessible via keyboard
- [ ] **Screen Reader**: Content readable with screen reader software
- [ ] **Color Contrast**: Sufficient contrast ratios (4.5:1 minimum)
- [ ] **Focus Indicators**: Clear focus indicators for all interactive elements
- [ ] **Alternative Text**: Images have appropriate alt text
- [ ] **Form Labels**: All form fields have associated labels

## Performance Testing

### Load Testing Scenarios
```yaml
# k6 load test configuration
scenarios:
  normal_load:
    users: 10
    duration: 5m
    expected_response_time: < 200ms
    
  stress_test:
    users: 100  
    duration: 2m
    expected_response_time: < 500ms
    
  spike_test:
    users: 500
    duration: 30s
    acceptable_error_rate: < 5%
```

### Performance Acceptance Criteria
- [ ] Page load time < 3 seconds
- [ ] API response time < 200ms (95th percentile)
- [ ] Database query time < 50ms (average)
- [ ] No memory leaks during extended use
- [ ] Graceful degradation under high load

## Security Testing

### Security Test Cases
- [ ] **Input Validation**: SQL injection prevention
- [ ] **XSS Protection**: Cross-site scripting prevention
- [ ] **CSRF Protection**: Cross-site request forgery prevention
- [ ] **Authentication**: Proper login/logout functionality
- [ ] **Authorization**: Access control working correctly
- [ ] **Session Management**: Secure session handling
- [ ] **Password Security**: Strong password requirements
- [ ] **Data Encryption**: Sensitive data encrypted

### Security Testing Tools
```bash
# OWASP ZAP security scan
zap-baseline.py -t http://localhost:3000

# Dependency vulnerability scan
npm audit

# Static security analysis
semgrep --config=auto src/
```

## Test Data Management

### Test Data Requirements
```yaml
test_users:
  - email: test@example.com
    password: password123
    role: user
    status: active
    
  - email: admin@example.com
    password: admin123
    role: admin
    status: active

test_data:
  - valid_records: 10
  - invalid_records: 5
  - edge_case_records: 3
```

### Data Cleanup
```typescript
// Test data cleanup utilities
export const cleanupTestData = async () => {
  await TestUser.destroy({ where: { email: { [Op.like]: '%@test.com' } } });
  await TestRecord.destroy({ where: { isTestData: true } });
};
```

## Test Execution

### Test Suite Execution
```bash
# Run all tests
npm test

# Run specific test types
npm run test:unit
npm run test:integration
npm run test:e2e

# Run tests with coverage
npm run test:coverage

# Run performance tests
npm run test:performance
```

### Continuous Integration
```yaml
# CI test pipeline
stages:
  - unit_tests
  - integration_tests
  - security_scan
  - e2e_tests
  - performance_tests

quality_gates:
  - test_coverage: > 80%
  - security_scan: no_critical_issues
  - performance: response_time < 500ms
```

## Test Reports

### Coverage Report
- **Target**: 80% code coverage minimum
- **Critical Paths**: 100% coverage required
- **Report Location**: `coverage/lcov-report/index.html`

### Test Results Summary
| Test Type | Total | Passed | Failed | Skipped | Coverage |
|-----------|-------|--------|--------|---------|----------|
| Unit | - | - | - | - | -% |
| Integration | - | - | - | - | -% |
| E2E | - | - | - | - | -% |
| **Total** | - | - | - | - | -% |

## Issue Tracking

### Bug Report Template
```markdown
**Bug Title**: [Brief description]

**Environment**: [Development/Staging/Production]

**Steps to Reproduce**:
1. [Step 1]
2. [Step 2]
3. [Step 3]

**Expected Result**: [What should happen]

**Actual Result**: [What actually happened]

**Screenshots/Logs**: [Attach if applicable]

**Priority**: [Critical/High/Medium/Low]

**Assigned To**: [Team member]
```

## Sign-off Criteria

### Definition of Done
- [ ] All test scenarios executed and passed
- [ ] Code coverage meets minimum requirements
- [ ] Security testing completed with no critical issues
- [ ] Performance requirements met
- [ ] Cross-browser testing completed
- [ ] Accessibility requirements verified
- [ ] Documentation updated
- [ ] Stakeholder acceptance received

### Test Sign-off
- **Tested By**: [Name]
- **Date**: [Date]
- **Test Environment**: [Environment details]
- **Overall Status**: [PASS/FAIL]
- **Recommendation**: [GO/NO-GO for deployment]

---
**Test Plan Version**: 1.0  
**Last Updated**: [Date]  
**Next Review**: [Date]