Learn Java Unit Testing with JUnit 5 in 20 Steps - Step 15 - Tip - Unit Testing for Performance

The video tutorial explains how to conduct performance tests on specific methods using JUnit. It highlights the importance of performance testing, especially when methods need to run within certain time constraints. The tutorial covers the use of assertTimeout in JUnit 5, demonstrating how to set a duration for method execution and use lambda expressions to encapsulate the code. An example is provided where a method is tested to run within 5 seconds, but it fails, taking 12 seconds. The video concludes by emphasizing the value of integrating performance tests into unit testing to ensure critical methods remain efficient.

What happens if a performance test exceeds the specified timeout?

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In what scenarios would you want to implement performance tests?

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How does the approach to performance testing differ from traditional unit testing?

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