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

The video tutorial explains how to test the performance of array sorting using JUnit. It covers setting up a test to sort a million arrays, implementing logic to vary array values, and using timeouts to measure performance. The tutorial also discusses evaluating test results, setting performance benchmarks, and considerations for running tests on build servers.

What considerations does the teacher mention regarding the build server's performance?

Why is it important to have a performance test for the array sorting functionality?