
Master JavaScript unit testing fundamentals, from setup to test-driven development. Learn to write effective tests, reduce bugs, and improve code quality through hands-on exercises and practical examples.

Comprehensive guide to software testing techniques, covering unit tests, integration tests, TDD, and both automated and manual approaches for ensuring code quality and reliability.

Comprehensive overview of essential PHP development tools, including dephpend, php-cs-fixer, phpstan, phan, and PHPUnit. Learn how to integrate these tools into your workflow for improved productivity and code quality.

Learn to write unit and integration tests for Next.js apps using React Testing Library and Jest. Covers test types, query methods, and practical examples for components and app-level testing.

Learn to mock a REST API server for testing with Jest and React Testing Library in Next.js. Covers async unit and integration tests, MSW setup, and CRUD operations implementation.

Explore integration testing for Jakarta EE apps using various libraries and Testcontainers. Learn to deploy, test, and debug applications in containers with production runtime.

Explore JUnit 5 features for effective and readable automated tests in Java, covering setup, assertions, assumptions, data-driven tests, and test organization.

Explore Android Testing Support Library's features for test-driven development, including Robolectric, level testing, and Android Test Orchestrator, to enhance app quality and efficiency.

Learn effective techniques for testing coroutines in Android development, covering key concepts, best practices, and common challenges to ensure robust asynchronous code.

Develop robust Android apps using modern design patterns and AndroidX Test libraries. Learn a comprehensive testing strategy mirroring real-world scenarios for reliable application development.

Learn to create a robust data layer for Android apps, focusing on repositories, data sources, and models. Explore stream-based data exposure and effective testing techniques.

Comprehensive guide to Android testing, covering unit, UI, and end-to-end tests in clean architecture. Learn to write effective tests for your app's reliability and performance.

Learn Python unit testing techniques, mock print outputs, and update PyPI packages to enhance your development skills and package management abilities.

Explore techniques for refactoring monolithic Python functions into smaller, modular, and testable units. Learn mental models for writing maintainable and predictable code.

Learn to contribute to open source by submitting your first pull request, using GitHub Actions for CI/CD, and understanding unit tests and coverage in this practical guide.

Explore JUnit 5's modern testing capabilities for Java, including extensibility, Java 8 features, and a new programming API. Learn about its architecture, Jupiter model, and migration strategies.

Explore Testcontainers for integration testing, local development, and CI pipelines through live coding. Learn to boot database containers, replace docker-compose, and create reliable tests.

Learn essential Extreme Programming practices like unit testing, Test-Driven Development, and Continuous Integration to enhance software quality and development efficiency.

Explore JUnit 5's architecture, features, and extension model for enhanced Java testing. Learn about tagging, custom names, parameterized tests, and integration with Spring Framework 5.0.

Explore innovative lambda techniques to simplify Java code, enhance APIs, and improve resource management. Learn practical recipes for more expressive and efficient programming.

Explore asynchronous programming in Java using Loom and Structured Concurrency. Learn to build real applications with virtual threads, custom scopes, and ExtentLocal for efficient concurrent programming.