**Effective Testing Strategies for Developers**

Developers can benefit from a robust testing approach, incorporating unit, integration, and end-to-end (E2E) testing methods. This comprehensive strategy not only enhances code quality but also boosts developer confidence and user satisfaction.

Recently, a developer shared an example of implementing these testing techniques using Jest, Supertest, and Puppeteer in a simple user registration project with Node.js and MongoDB. The example demonstrated how to reset mock functions before each test, use mocks for database interactions, and run all test types simultaneously while respecting their configurations.

By adopting a solid testing strategy, developers can improve code reliability, reduce bugs, and enhance overall application performance. This approach is essential for building trustworthy applications that meet user expectations.

Source: https://dev.to/mayallo/unit-integration-and-e2e-testing-in-one-example-using-jest-1h6p