What is the difference between SpringJUnit4ClassRunner and SpringRunner

SpringRunner is an alias for the SpringJUnit4ClassRunner. @RunWith(SpringRunner.class) tells JUnit to run using Spring’s testing support. SpringRunner is the new name for SpringJUnit4ClassRunner, it’s just a bit easier on the eye. SpringRunner is only available after spring-test 4.3. SpringRunner class extends SpringJUnit4ClassRunner.   Read the doc source code package org.springframework.test.context.junit4; import org.junit.runners.model.InitializationError; public final class SpringRunner extends SpringJUnit4ClassRunner Read more…

@RunWith(SpringJUnit4ClassRunner.class)

In order for the unit test to run a batch job, the framework must load the job’s ApplicationContext. Two annotations are used to trigger this: @RunWith(SpringJUnit4ClassRunner.class): Indicates that the class should use Spring’s JUnit facilities. @ContextConfiguration(locations = {…}): Indicates which XML files contain the ApplicationContext. For example: import org.junit.Test; import Read more…

A Template of JUnit5 with Mockito

@ExtendWith(MockitoExtension.class) class ArticleManagerTest { @Mock ArticleDatabase database; @Mock User user; @Spy @InjectMocks private ArticleManager manager; @BeforeEach void setup(){ // some initialization codes } @Test void shouldDoSomething() { // TODO perform some tests with this managers when(database.some(param)).thenReturn(data); Object res = manager.exe(); assertEquals(res, "data"); verify(database).some(param); } } Reading more: Unit tests with Read more…

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