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I'm running JUnit tests on a large code base, and I've been realizing that sometimes I get "Errors" while other times I get "Failures". What's the difference?
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When a JUnit test is "Failed", u have gotten an AssertionException. Means in your case result was false, where it should have been true.
The fail assertion fails a test throwing an AssertionError. It can be used to verify that an actual exception is thrown or when we want to make a test failing during its development. In JUnit 5 all JUnit 4 assertion methods are moved to org.
Why does JUnit only report the first failure in a single test? Reporting multiple failures in a single test is generally a sign that the test does too much and it is too big a unit test. JUnit is designed to work best with a number of small tests. It executes each test within a separate instance of the test class.
Failures are when your test cases fail – i.e. your assertions are incorrect.
Errors are when unexpected errors/exceptions occur - i.e. while trying to actually run the test and an unexpected exception is thrown like FileNotFound, etc`.
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