Mockito mock of interfaces lost annotation information #2640
Description
I see some different behaviour after updating mockito, and I think it's a bug.
See code below - the test fails because the mocked interface has lost the expected annotation.
Making mocks of classes, keeps the annotation information.
Making mocks of interfaces, annotation information is lost.
Junit version: junit:junit:4.13.2
mockito version: org.mockito:mockito-core:4.5.1
openJDK 11
package com.company;
import java.lang.annotation.ElementType;
import java.lang.annotation.Retention;
import java.lang.annotation.RetentionPolicy;
import java.lang.annotation.Target;
import org.hamcrest.MatcherAssert;
import org.hamcrest.core.IsNull;
import org.junit.Test;
import org.mockito.Mockito;
public class TestAnnotation {
@Retention(RetentionPolicy.RUNTIME)
@Target(ElementType.TYPE)
public @interface SomeAnnotation {
}
@SomeAnnotation
public class SomeClass {
}
@SomeAnnotation
public interface SomeInterface {
}
@Test
public void testAnnotation() {
SomeClass someClass = new SomeClass();
MatcherAssert.assertThat(someClass.getClass().getAnnotation(SomeAnnotation.class), IsNull.notNullValue());
SomeClass spyOnSomeClass = Mockito.spy(someClass);
MatcherAssert.assertThat(spyOnSomeClass.getClass().getAnnotation(SomeAnnotation.class), IsNull.notNullValue());
SomeClass someClassMock = Mockito.mock(SomeClass.class);
MatcherAssert.assertThat(someClassMock.getClass().getAnnotation(SomeAnnotation.class), IsNull.notNullValue());
MatcherAssert.assertThat(SomeInterface.class.getAnnotation(SomeAnnotation.class), IsNull.notNullValue());
SomeInterface someInterfaceMock = Mockito.mock(SomeInterface.class);
MatcherAssert.assertThat(someInterfaceMock.getClass().getAnnotation(SomeAnnotation.class), IsNull.notNullValue());
}
}
The test works on previous versions of mockito like, 4.4.0