🙆‍♂️ import 🙇‍♂️

SpringRunner unable to detect configuration[StackOverflow]

문제 상황

VSCode에서 jUnit으로 TestCode 작성 중 테스트 실행 자체가 안되는 문제가 발생했다.

Message:
N/A
Stack trace:
java.lang.Exception: No tests found matching [{ExactMatcher:fDisplayName=saveAndGetUser], {ExactMatcher:fDisplayName=saveAndGetUser(com.ddaja.repository.UserRepositoryTest)], {LeadingIdentifierMatcher:fClassName=com.ddaja.repository.UserRepositoryTest,fLeadingIdentifier=saveAndGetUser]] from org.junit.internal.requests.ClassRequest@491666ad
	at org.junit.internal.requests.FilterRequest.getRunner(FilterRequest.java:40)
	at org.eclipse.jdt.internal.junit4.runner.JUnit4TestLoader.createFilteredTest(JUnit4TestLoader.java:83)
	at org.eclipse.jdt.internal.junit4.runner.JUnit4TestLoader.createTest(JUnit4TestLoader.java:74)
	at org.eclipse.jdt.internal.junit4.runner.JUnit4TestLoader.loadTests(JUnit4TestLoader.java:49)
	at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:513)
	at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:756)
	at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.run(RemoteTestRunner.java:452)
	at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.main(RemoteTestRunner.java:210)

08:29:34.864 [main] DEBUG org.springframework.test.context.junit4.SpringJUnit4ClassRunner - SpringJUnit4ClassRunner constructor called with [class com.ddaja.repository.UserRepositoryTest]
08:29:34.870 [main] DEBUG org.springframework.test.context.BootstrapUtils - Instantiating CacheAwareContextLoaderDelegate from class [org.springframework.test.context.cache.DefaultCacheAwareContextLoaderDelegate]
08:29:34.886 [main] DEBUG org.springframework.test.context.BootstrapUtils - Instantiating BootstrapContext using constructor [public org.springframework.test.context.support.DefaultBootstrapContext(java.lang.Class,org.springframework.test.context.CacheAwareContextLoaderDelegate)]
08:29:34.963 [main] DEBUG org.springframework.test.context.BootstrapUtils - Instantiating TestContextBootstrapper for test class [com.ddaja.repository.UserRepositoryTest] from class [org.springframework.boot.test.context.SpringBootTestContextBootstrapper]
08:29:34.979 [main] INFO org.springframework.boot.test.context.SpringBootTestContextBootstrapper - Neither @ContextConfiguration nor @ContextHierarchy found for test class [com.ddaja.repository.UserRepositoryTest], using SpringBootContextLoader
08:29:34.985 [main] DEBUG org.springframework.test.context.support.AbstractContextLoader - Did not detect default resource location for test class [com.ddaja.repository.UserRepositoryTest]: class path resource [com/ddaja/repository/UserRepositoryTest-context.xml] does not exist
08:29:34.985 [main] DEBUG org.springframework.test.context.support.AbstractContextLoader - Did not detect default resource location for test class [com.ddaja.repository.UserRepositoryTest]: class path resource [com/ddaja/repository/UserRepositoryTestContext.groovy] does not exist
08:29:34.985 [main] INFO org.springframework.test.context.support.AbstractContextLoader - Could not detect default resource locations for test class [com.ddaja.repository.UserRepositoryTest]: no resource found for suffixes {-context.xml, Context.groovy}.
08:29:34.987 [main] INFO org.springframework.test.context.support.AnnotationConfigContextLoaderUtils - Could not detect default configuration classes for test class [com.ddaja.repository.UserRepositoryTest]: UserRepositoryTest does not declare any static, non-private, non-final, nested classes annotated with @Configuration.
08:29:35.133 [main] DEBUG org.springframework.test.context.support.ActiveProfilesUtils - Could not find an 'annotation declaring class' for annotation type [org.springframework.test.context.ActiveProfiles] and class [com.ddaja.repository.UserRepositoryTest]

핵심 문구

나는 핵심 문구를 Did not detct default resource location for test class로 정하고,

역시나 구글 신께 여쭈어 보았다.

원인

원인은 Spring Boot의 @SpringBootApplication Annotation으로 설정한 Class 명과,
Test수행을 위해 작성한 Class 명이 일치하지 않아서 발생했다.

위 사진 처럼 기본 Spring Boot에서 생성과 동시에 나오는 Test Class는 TestClss 명과 @SpringBootApplication 으로 생성된 DdajaApplication Class 명이 일치한다.

하지만 아래 사진 처럼 임의로 작성한 TestClass명은 Class 명이 일치하지 않는다.

해결

해결 방법은 @SpringBootApplication Annotation으로 설정한 Class 명을 @ContextConfiguration(classes = DdajaApplication.class)
이렇게 TestClass 위에 Annotation을 추가해주면 된다.

이제 jUnit Test를 마음 껏 누릴 수 있다!

오늘도 해결 완료 :) 🙆🏻‍♂️