Testing Tools

Testing tools are critical for ensuring software quality in regulated environments. This guide provides tool recommendations by testing type and technology stack, enabling teams to select appropriate tools for their verification activities.

Automated Testing Process

Testing Tools by Technology Stack

JavaScript/TypeScript

// Example: Jest unit test
describe('calculateTotal', () => {
  it('should calculate correct total with tax', () => {
    const items = [{ price: 100 }, { price: 50 }];
    const taxRate = 0.1;

    const result = calculateTotal(items, taxRate);

    expect(result).toBe(165); // 150 + 15 tax
  });
});

Java

// Example: JUnit 5 with Mockito
@ExtendWith(MockitoExtension.class)
class UserServiceTest {
    @Mock
    private UserRepository userRepository;

    @InjectMocks
    private UserService userService;

    @Test
    void shouldReturnUserWhenExists() {
        when(userRepository.findById(1L))
            .thenReturn(Optional.of(new User(1L, "John")));

        User result = userService.findById(1L);

        assertThat(result.getName()).isEqualTo("John");
    }
}

.NET

// Example: xUnit with Moq
public class UserServiceTests
{
    [Fact]
    public async Task GetUser_ReturnsUser_WhenExists()
    {
        // Arrange
        var mockRepo = new Mock<IUserRepository>();
        mockRepo.Setup(r => r.GetByIdAsync(1))
            .ReturnsAsync(new User { Id = 1, Name = "John" });

        var service = new UserService(mockRepo.Object);

        // Act
        var result = await service.GetByIdAsync(1);

        // Assert
        Assert.Equal("John", result.Name);
    }
}

Python

# Example: pytest with fixtures
import pytest
from myapp.services import UserService

@pytest.fixture
def user_service(mocker):
    repo = mocker.Mock()
    return UserService(repository=repo)

def test_get_user_returns_user_when_exists(user_service, mocker):
    user_service.repository.find_by_id.return_value = {"id": 1, "name": "John"}

    result = user_service.get_by_id(1)

    assert result["name"] == "John"

PHP

Performance Testing Tools

Load Testing Example (k6)

import http from 'k6/http';
import { check, sleep } from 'k6';

export const options = {
  stages: [
    { duration: '2m', target: 100 }, // Ramp up
    { duration: '5m', target: 100 }, // Stay at 100
    { duration: '2m', target: 0 },   // Ramp down
  ],
  thresholds: {
    http_req_duration: ['p(95)<500'], // 95% under 500ms
    http_req_failed: ['rate<0.01'],   // Error rate under 1%
  },
};

export default function () {
  const res = http.get('https://api.example.com/users');
  check(res, {
    'status is 200': (r) => r.status === 200,
    'response time < 500ms': (r) => r.timings.duration < 500,
  });
  sleep(1);
}

Security Testing Tools

See Security Tools for comprehensive security testing guidance.

Test Environment Tools

Containerized Testing

# docker-compose.test.yml
version: '3.8'
services:
  app:
    build: .
    depends_on:
      - db
      - redis
    environment:
      - DATABASE_URL=postgresql://test:test@db/testdb
      - REDIS_URL=redis://redis:6379

  db:
    image: postgres:15
    environment:
      - POSTGRES_DB=testdb
      - POSTGRES_USER=test
      - POSTGRES_PASSWORD=test

  redis:
    image: redis:7-alpine

Test Data Generation

CI/CD Integration

GitHub Actions Example

name: Test Suite

on: [push, pull_request]

jobs:
  test:
    runs-on: ubuntu-latest

    services:
      postgres:
        image: postgres:15
        env:
          POSTGRES_PASSWORD: test
        options: >-
          --health-cmd pg_isready
          --health-interval 10s
        ports:
          - 5432:5432

    steps:
      - uses: actions/checkout@v4

      - name: Setup Node.js
        uses: actions/setup-node@v4
        with:
          node-version: '20'
          cache: 'npm'

      - name: Install dependencies
        run: npm ci

      - name: Run unit tests
        run: npm run test:unit -- --coverage

      - name: Run integration tests
        run: npm run test:integration
        env:
          DATABASE_URL: postgresql://postgres:test@localhost:5432/test

      - name: Run E2E tests
        run: npm run test:e2e

      - name: Upload coverage
        uses: codecov/codecov-action@v3

Related Resources

• Automated Testing - Testing strategies and patterns
• Security Tools - Security testing guidance
• CI/CD & DevOps - Pipeline implementation
• Code Reviews - Review processes

Compliance

This section fulfills ISO 13485 requirements for design verification (7.3.6), validation tools (7.5.2), and monitoring equipment (7.6), and ISO 27001 requirements for security testing (A.8.29), test information management (A.8.33), and secure development lifecycle (A.8.25).

View full compliance matrix