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Are there any advantages to junit 4 over junit 5?


Asked by Raya Mayer on Dec 06, 2021 jUnit



JUnit 5 Advantages Let's start with the previous version – JUnit 4 has some clear limitations: The entire framework was contained in a single jar library. The whole library needs to be imported even when only a particular feature is required. In JUnit 5, we get more granularity and can import only what is necessary
And,
JUnit 5 leverages features from Java 8 or later, like lambda functions, making tests more powerful and easier to maintain. JUnit 5 has added some very useful new features for describing, organizing, and executing tests. For instance, tests get better display names and can be organized hierarchically.
In addition, One test runner can only execute tests in JUnit 4 at a time (e.g. SpringJUnit4ClassRunner or Parameterized ). JUnit 5 allows multiple runners to work simultaneously JUnit 4 never advanced beyond Java 7, missing out on a lot of features from Java 8.
Moreover,
The emphasis on unit testing and test driven development has resulted in developers creating a significant corpus of JUnit tests using the JUnit 3 test framework. The migration of these unit tests to JUnit 4, though, has been fairly slow. Some of the reason for this is the less than rapid move from JDK 1.4.x to Java 5 (or later).
Keeping this in consideration,
JUnit 4 came with a lot of new features that introduce a lots of advantages. JDK 1.5+ is requered as is using annotations, generic, static import, features introduced in Java 5. Here is a practical example of the same test case in both JUnit versions. To generate the test cases for each version a simple class will be used.