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2.0.8-beta -> 2.0.9-beta 'Unable to initialize @Spy annotated field

See original GitHub issue

No test failures when using 2.0.8-beta, but when incrementing to 2.0.9-beta, the following error occurs:

org.mockito.exceptions.base.MockitoException: Unable to initialize @Spy annotated field 'monitorTaskScheduler'.
Unable to create mock instance of type 'MonitorTaskScheduler'
    at net.project.dash.monitor.MonitorTaskScheduler$MockitoMock$1184625981.getExecutorService(Unknown Source)
    at net.project.dash.monitor.MonitorTaskScheduler.<init>(MonitorTaskScheduler.java:39)
    at net.project.dash.monitor.MonitorTaskScheduler$MockitoMock$1184625981.<init>(Unknown Source)
    at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
    at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:62)
    at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
    at java.lang.reflect.Constructor.newInstance(Constructor.java:422)
    at org.mockito.internal.creation.instance.ConstructorInstantiator.invokeConstructor(ConstructorInstantiator.java:42)
    at org.mockito.internal.creation.instance.ConstructorInstantiator.noArgConstructor(ConstructorInstantiator.java:66)
    at org.mockito.internal.creation.instance.ConstructorInstantiator.newInstance(ConstructorInstantiator.java:17)
    at org.mockito.internal.creation.bytebuddy.ByteBuddyMockMaker.createMock(ByteBuddyMockMaker.java:27)
    at org.mockito.internal.util.MockUtil.createMock(MockUtil.java:33)
    at org.mockito.internal.MockitoCore.mock(MockitoCore.java:59)
    at org.mockito.Mockito.mock(Mockito.java:1284)
    at org.mockito.internal.configuration.SpyAnnotationEngine.newSpyInstance(SpyAnnotationEngine.java:117)
    at org.mockito.internal.configuration.SpyAnnotationEngine.process(SpyAnnotationEngine.java:67)
    at org.mockito.internal.configuration.InjectingAnnotationEngine.processIndependentAnnotations(InjectingAnnotationEngine.java:73)
    at org.mockito.internal.configuration.InjectingAnnotationEngine.process(InjectingAnnotationEngine.java:55)
    at org.mockito.MockitoAnnotations.initMocks(MockitoAnnotations.java:108)
    at net.project.dash.monitor.MonitorTaskSchedulerTest.setUp(MonitorTaskSchedulerTest.java:38)

Relevant code (MonitorTaskSchedulerTest.java)

@Spy
MonitorTaskScheduler monitorTaskScheduler;

@Before
public void setUp()
{
    MockitoAnnotations.initMocks(this);
}

Relevant code (MonitorTaskScheduler.java)

public class MonitorTaskScheduler
{
    public MonitorTaskScheduler()
    {
        this.futureToTaskMap = new ConcurrentHashMap<>();
    }
}

Issue Analytics

State:
Created 8 years ago
Comments:10 (5 by maintainers)

Top GitHub Comments

1reaction

bric3commented, Jun 6, 2015

Actually there maybe a better workaround, using the Mockito.spy() factory method.

class MonitorTaskSchedulerTest {

// @Spy
MonitorTaskScheduler monitorTaskScheduler = spy(new MinitorTaskScheduler());

This even works with @InjectMocks

0reactions

brcolowcommented, Jun 26, 2015

2d036ec fixed my original issue indeed! Thanks so much, great work.

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