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Could someone describe in a few words what the main differences between JUnit 3 and 4 are?
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Differences Between JUnit 4 and JUnit 5 Some other differences include: The minimum JDK for JUnit 4 was JDK 5, while JUnit 5 requires at least JDK 8. The @Before , @BeforeClass , @After , and @AfterClass annotations are now the more readable as the @BeforeEach , @BeforeAll , @AfterEach , and @AfterAll annotations.
JUnit 5 is 10x slower than JUnit 4 #880.
The JUnit 4 dependency is still part of newer spring-boot-test project because of backward compatibility. It essentially means if there are existing JUnit 4 test cases available in the same project, JUnit's will not break. In the next few steps, we will see how we will exclude JUnit 4 fully and move to JUnit 5 fully.
Java 5 annotations for setup and teardown (@before and @after) instead of setUp() and tearDown().
don't need to extend TestCase anymore.
@Test annotation replaces testSomeMethod() naming convention.
static imports for asserts.
Junit theories, which allow you to separate data sets from the test itself.
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