CODEWITHSUNDEEP
javaunit-testingpowermockito
user6032518
user6032518

Reputation:

How do I mock Authentication objects in PowerMockito?

Note that this is a UNIT test, not an integration test so I don't want any Spring and literally everything that can be mocked, should be.

This code:

@RunWith(PowerMockRunner.class)
@PrepareForTest({...})
@PowerMockIgnore({
        "com.sun.crypto.*",
        "javax.crypto.*",
        "javax.management.*"})
public class TestClass {
...


@Test
public void testMethod (
          Authentication mockAuthentication = Mockito
                .mock(Authentication.class);  
  ) 
}

...throws this exception:

java.lang.LinkageError: loader constraint violation: loader (instance of org/powermock/core/classloader/MockClassLoader) previously initiated loading for a different type with name "javax/security/auth/Subject"

    at java.lang.ClassLoader.defineClass1(Native Method)
    at java.lang.ClassLoader.defineClass(ClassLoader.java:763)
    at org.powermock.core.classloader.MockClassLoader.loadUnmockedClass(MockClassLoader.java:262)
    at org.powermock.core.classloader.MockClassLoader.loadModifiedClass(MockClassLoader.java:206)
    at org.powermock.core.classloader.DeferSupportingClassLoader.loadClass1(DeferSupportingClassLoader.java:89)
    at org.powermock.core.classloader.DeferSupportingClassLoader.loadClass(DeferSupportingClassLoader.java:79)
    at java.lang.ClassLoader.loadClass(ClassLoader.java:357)
    at org.springframework.security.authentication.TestingAuthenticationToken$MockitoMock$2107019845.<clinit>(Unknown Source)
    at sun.reflect.GeneratedSerializationConstructorAccessor27.newInstance(Unknown Source)
    at java.lang.reflect.Constructor.newInstance(Constructor.java:423)
    at org.objenesis.instantiator.sun.SunReflectionFactoryInstantiator.newInstance(SunReflectionFactoryInstantiator.java:48)
    at org.objenesis.ObjenesisBase.newInstance(ObjenesisBase.java:73)
    at org.mockito.internal.creation.instance.ObjenesisInstantiator.newInstance(ObjenesisInstantiator.java:18)
    at org.mockito.internal.creation.bytebuddy.SubclassByteBuddyMockMaker.createMock(SubclassByteBuddyMockMaker.java:47)
    at org.powermock.api.mockito.mockmaker.PowerMockMaker.createMock(PowerMockMaker.java:50)
    at org.mockito.internal.util.MockUtil.createMock(MockUtil.java:35)
    at org.mockito.internal.MockitoCore.mock(MockitoCore.java:63)
    at org.mockito.Mockito.mock(Mockito.java:1729)
    at org.mockito.Mockito.mock(Mockito.java:1642)

Clue? I've been trying various things from StackOverflow but haven't found a solution yet. Surely PowerMockito uses this class to work it's magic, so maybe this is loaded by PowerMockito and cannot be changed?

Upvotes: 9

Views: 3352

Answers (1)

Gustavo Santos
Gustavo Santos

Reputation: 121

In that case, the class are not load belongs to javax.security, thus you should ignore "javax.security.*" in @PowerMockIgnore. It works.

Upvotes: 12

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