In this post we will talk and learn about JUnit 5 life cycle @AfterAll annotation.
In JUnit 5 @AfterAll annotation is used to signal that the annotated method should be executed after all tests in the current test Class.
It is a replacement of @AfterClass annotation in JUnit 4.
@AfterAll annotated method must be declare as static method otherwise it will throw runtime error.
@AfterAll Annotation Example
Let’s understand @AfterAll Annotation using an example. Here I have MyUtils.java class with add method. I will write a Junit test for this add method and we will see how we can make use of @AfterAll Annotation in the same Unit class
Utility Class for that we have to write JUnit Test:
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package kkjavatutorials.com; public class MyUtils { public int add (int n1,int n2) { return n1+n2; } } |
JUnit Test Class , method setUp() is annotated with @BeforeAll and method tearDown() is annotated with @AfterAll Annotation.
NOTE: Both setUp() and tearDown() method must be declared as static else it will throw Runtime Exception.
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org.junit.platform.commons.JUnitException: @AfterAll method 'void kkjavatutorials.com.MyUtilsTest.tearDown()' must be static unless the test class is annotated with @TestInstance(Lifecycle.PER_CLASS). at org.junit.jupiter.engine.descriptor.LifecycleMethodUtils.assertStatic(LifecycleMethodUtils.java:57) at org.junit.jupiter.engine.descriptor.LifecycleMethodUtils.lambda$findMethodsAndAssertStatic$0(LifecycleMethodUtils.java:81) at java.util.ArrayList.forEach(ArrayList.java:1249) at java.util.Collections$UnmodifiableCollection.forEach(Collections.java:1080) at org.junit.jupiter.engine.descriptor.LifecycleMethodUtils.findMethodsAndAssertStatic(LifecycleMethodUtils.java:81) |
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package kkjavatutorials.com; import static org.junit.jupiter.api.Assertions.assertEquals; import org.junit.jupiter.api.AfterAll; import org.junit.jupiter.api.BeforeAll; import org.junit.jupiter.api.Test; class MyUtilsTest { private static MyUtils myUtils; @BeforeAll static void setUp(){ System.out.println("Test data set up.."); myUtils = new MyUtils(); } @Test void addTest() { System.out.println("addTest Method.."); assertEquals(10, myUtils.add(6, 4)); } @AfterAll static void tearDown(){ System.out.println("Test data tearDown.."); myUtils = null; } } |
Output of above test class
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That’s all about JUnit 5 @AfterAll annotation example
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