Support for nested tests

[czietsman]

I've been playing with JUnit 5 and spring-test-junit5. I then tried to use the nested tests feature, but my tests fail. This also happens when I run directly from the command line using gradle.

	@ExtendWith(SpringExtension.class)
	@ContextConfiguration(classes = TestConfig.class)
	@DisplayName("In cat club")
	public class NestedCatTests {
	    @Autowired
	    Cat cat;
	
	    @Autowired
	    List<Cat> cats;
	
	    @Test
	    @DisplayName("Catbert is the cat")
	    void catWasAutowired() {
	        assertEquals(
	                "Catbert",
	                cat.getName()
	        );
	    }
	
	    @Nested
	    @DisplayName("Catbert")
	    class IsMemberOfClub {
	        @Test
	        @DisplayName("is a member")
	        void isMemberOf() {
	            assertTrue(cats.contains(cat));
	        }
	    }
	}

I get the following exception:

	java.lang.IllegalStateException: Failed to load ApplicationContext
	
	at org.springframework.test.context.cache.DefaultCacheAwareContextLoaderDelegate.loadContext(DefaultCacheAwareContextLoaderDelegate.java:124)
	at org.springframework.test.context.support.DefaultTestContext.getApplicationContext(DefaultTestContext.java:83)
	at org.springframework.test.context.support.DependencyInjectionTestExecutionListener.injectDependencies(DependencyInjectionTestExecutionListener.java:117)
	at org.springframework.test.context.support.DependencyInjectionTestExecutionListener.prepareTestInstance(DependencyInjectionTestExecutionListener.java:83)
	at org.springframework.test.context.TestContextManager.prepareTestInstance(TestContextManager.java:230)
	at org.springframework.test.context.junit.jupiter.SpringExtension.postProcessTestInstance(SpringExtension.java:91)
	at org.junit.jupiter.engine.descriptor.ClassTestDescriptor.lambda$null$1(ClassTestDescriptor.java:196)
	at org.junit.jupiter.engine.descriptor.JupiterTestDescriptor.executeAndMaskThrowable(JupiterTestDescriptor.java:102)
	...
	at java.lang.reflect.Method.invoke(Method.java:497)
	at com.intellij.rt.execution.application.AppMain.main(AppMain.java:147)
	
	Caused by: java.lang.IllegalStateException: Neither GenericXmlContextLoader nor AnnotationConfigContextLoader was able to load an ApplicationContext from [MergedContextConfiguration@4816278d testClass = NestedCatTests.IsMemberOfClub, locations = '{}', classes = '{}', contextInitializerClasses = '[]', activeProfiles = '{}', propertySourceLocations = '{}', propertySourceProperties = '{}', contextCustomizers = set[[empty]], contextLoader = 'org.springframework.test.context.support.DelegatingSmartContextLoader', parent = [null]].
	at org.springframework.test.context.support.AbstractDelegatingSmartContextLoader.loadContext(AbstractDelegatingSmartContextLoader.java:263)
	at org.springframework.test.context.cache.DefaultCacheAwareContextLoaderDelegate.loadContextInternal(DefaultCacheAwareContextLoaderDelegate.java:98)
	at org.springframework.test.context.cache.DefaultCacheAwareContextLoaderDelegate.loadContext(DefaultCacheAwareContextLoaderDelegate.java:116)
	... 44 more

I've managed to get it to work if I add @ContextConfiguration(classes = TestConfig.class) to the nested class. I think however that support could be improved to resolve the configuration from the enclosing class.

[sbrannen]

Thanks for raising the issue!

However, this code base is not actively maintained: it has been moved to the spring-test module in the Spring Framework.

Would you mind creating an issue against the "Spring Framework" and its "Test" component here?

[sbrannen]

FYI: this is somewhat related to SPR-14150.

[sbrannen]

Closing in lieu of SPR-15366.