[ERROR][TaskAgile] java.lang.IllegalStateException: Failed to load ApplicationContext; org.mockito.exceptions.base.MockitoException: Mockito cannot mock this class; java.lang.IllegalArgumentException: Could not create type at net.bytebuddy.TypeCache.f..

register_existedEmailAddress_shouldFailAndReturn400

java.lang.IllegalStateException: Failed to load ApplicationContext
	at org.springframework.test.context.cache.DefaultCacheAwareContextLoaderDelegate.loadContext
 ...
 Caused by: org.mockito.exceptions.base.MockitoException: 
Mockito cannot mock this class: interface com.taskagile.domain.application.UserService.
...
Underlying exception : java.lang.IllegalArgumentException: Could not create type
	at org.springframework.boot.test.mock.mockito.MockDefinition.createMock(MockDefinition.java:157)
    ...
Caused by: java.lang.IllegalArgumentException: Could not create type
	at net.bytebuddy.TypeCache.findOrInsert(TypeCache.java:140)
    ...    
Caused by: java.lang.NoSuchMethodError: 'net.bytebuddy.dynamic.loading.MultipleParentClassLoader$Builder net.bytebuddy.dynamic.loading.MultipleParentClassLoader$Builder.appendMostSpecific(java.util.Collection)'
...

 

register_validPayload_shouldSucceedAndReturn201

java.lang.IllegalStateException: Failed to load ApplicationContext
	at org.springframework.test.context.cache.DefaultCacheAwareContextLoaderDelegate.loadContext(DefaultCacheAwareContextLoaderDelegate.java:125)
...      
Caused by: org.mockito.exceptions.base.MockitoException: 
Mockito cannot mock this class: interface com.taskagile.domain.application.UserService.
Mockito can only mock non-private & non-final classes.
If you're not sure why you're getting this error, please report to the mailing list.
Java               : 14
...
Underlying exception : java.lang.IllegalArgumentException: Could not create type
	at org.springframework.boot.test.mock.mockito.MockDefinition.createMock(MockDefinition.java:157)
...
Caused by: java.lang.IllegalArgumentException: Could not create type
	at net.bytebuddy.TypeCache.findOrInsert(TypeCache.java:140)
...
Caused by: java.lang.NoSuchMethodError: 'net.bytebuddy.dynamic.loading.MultipleParentClassLoader$Builder net.bytebuddy.dynamic.loading.MultipleParentClassLoader$Builder.appendMostSpecific(java.util.Collection)'
	at org.mockito.internal.creation.bytebuddy.SubclassBytecodeGenerator.mockClass(SubclassBytecodeGenerator.java:89)
...
    
    
    .... 다 같은 에러
    
    

 

 

 

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해결 방법

•  나의 mockito-core의 버전이 3.6.0이기 때문에 해당 버전 1.10.5가 적절하다. pom.xml에 추가

<dependency>
   <groupId>net.bytebuddy</groupId>
   <artifactId>byte-buddy</artifactId>
   <version>1.10.5</version>	
</dependency>

 

참고한 사이트에서 아래와 같이 쓰여있었다.

 

Initially, I was using mockito-core library version-3.3.3 which actually required byte-buddy 1.10.5.

우선, 나는 mockito-core 라이브러리 버전을 3.3.3을 사용하고 있었는데, 그것은 byte-buddy 1.10.5버전이 필요했다.

 

So, I downgraded the mockito-core library to 2.21.0 version which uses byte-buddy version 1.8.15.

그래서, 나는 mockito-core 라이브러리를 byte-buddy 버전이 1.8.15인 2.21.0 버전으로 내렸다.

 

 

---

참고 사이트  : 

stackoverflow.com/questions/58199214/mockito-mockito-cannot-mock-this-class-illegalargumentexception-could-not-c