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Pragmatic Unit Testing in Java 8 with JUnit

FIRST: Properties of Good Tests

Explore the FIRST principles that guide the creation of good unit tests. Understand how to write tests that are fast, isolated, repeatable, self-validating, and timely. This lesson helps you improve the reliability and effectiveness of your unit testing practices, whether you follow test-driven development or traditional approaches.

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FIRST principle

We can avoid many of the pitfalls that unit testers often fall into by following the FIRST principles of unit testing:

  • [F]ast: Unit tests should be fast
  • [I]
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