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Unit Testing Best Practices: 9 to Ensure You Do It Right
- Unit testing is a valuable type of automated testing that exercises small parts of an application in complete isolation.
- Unit tests are essential for finding and fixing bugs early, acting as a safety net for developers, and contributing to higher code quality.
- Unit tests also help detect code smells, contribute to better application architecture, and act as documentation.
- Unit tests provide fast and precise feedback, unlike other types of testing like end-to-end testing, which offer more realistic feedback.
- Unit tests should be fast, simple, readable, deterministic, and ideally part of the build process.
- It's crucial to understand the difference between unit tests and integration tests, and to ensure testable code by avoiding enemies of testability.
- Best practices for unit testing include ensuring tests are fast, simple, and do not duplicate implementation logic.
- Tests should be readable, deterministic, part of the build process, and should use test doubles appropriately.
- Adopting a sound naming convention for tests and avoiding coupling tests with implementation details are also crucial best practices.
- Unit testing is essential in all programming languages, and following unit testing best practices can help avoid common pitfalls and make the process easier and more effective.
- Unit testing, when done right by following best practices, can greatly improve app health and overall code quality.
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