在Spring Integration中模拟MessageHandler时出现java.lang.NoSuchMethodError

Question

I have a simple Spring Integration configuration that works

@Configuration
public class FTPIntegration {


@Bean
public MessageChannel outputIntegrationChannel(ErrorHandler errorHandler) {
    return MessageChannels
            .publishSubscribe()
            .errorHandler(errorHandler)
            .get();
}

@Bean
public IntegrationFlow ftpIntegration(ErrorHandler errorHandler, MessageHandler messageHandler) {
    return IntegrationFlows
            .from(outputIntegrationChannel(errorHandler))
            .transform(Transformers.toJson())
            .handle(messageHandler)
            .get();
}
}

I want to prepare some integration tests using Mockito to mock, spy MessageHandler and ErrorHandler. So that's why I want to replace them in test configuration.

@Profile("test")
@EnableIntegration
@Configuration
@Import(value = FTPIntegration.class)
public class TestConf {

@Bean
@Primary
public ErrorHandler errorHandler() {
    return mock(ErrorHandler.class);
}

@Bean
@Primary
public MessageHandler messageHandler() {
    return mock(MessageHandler.class);
}
}

And use it in my test class

@ActiveProfiles("test")
@RunWith(SpringRunner.class)
@SpringBootTest(classes = TestConf.class)
public class FTPIntegrationTest {

@Autowired
@Qualifier("outputIntegrationChannel")
private MessageChannel integrationChannel;
}

But with initialization I got an error that

java.lang.NoSuchMethodError: org.mockito.MockingDetails.getMockCreationSettings()Lorg/mockito/mock/MockCreationSettings;

at org.springframework.boot.test.mock.mockito.MockReset.get(MockReset.java:107)
at org.springframework.boot.test.mock.mockito.ResetMocksTestExecutionListener.resetMocks(ResetMocksTestExecutionListener.java:84)
at org.springframework.boot.test.mock.mockito.ResetMocksTestExecutionListener.resetMocks(ResetMocksTestExecutionListener.java:70)
at org.springframework.boot.test.mock.mockito.ResetMocksTestExecutionListener.beforeTestMethod(ResetMocksTestExecutionListener.java:57)
at org.springframework.test.context.TestContextManager.beforeTestMethod(TestContextManager.java:291)
at org.springframework.test.context.junit4.statements.RunBeforeTestMethodCallbacks.evaluate(RunBeforeTestMethodCallbacks.java:74)
at org.springframework.test.context.junit4.statements.RunAfterTestMethodCallbacks.evaluate(RunAfterTestMethodCallbacks.java:86)
at org.springframework.test.context.junit4.statements.SpringRepeat.evaluate(SpringRepeat.java:84)
at org.junit.runners.ParentRunner.runLeaf(ParentRunner.java:325)
at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.runChild(SpringJUnit4ClassRunner.java:251)
at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.runChild(SpringJUnit4ClassRunner.java:97)
at org.junit.runners.ParentRunner$3.run(ParentRunner.java:290)
at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:71)
at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:288)
at org.junit.runners.ParentRunner.access$000(ParentRunner.java:58)
at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:268)
at org.springframework.test.context.junit4.statements.RunBeforeTestClassCallbacks.evaluate(RunBeforeTestClassCallbacks.java:61)
at org.springframework.test.context.junit4.statements.RunAfterTestClassCallbacks.evaluate(RunAfterTestClassCallbacks.java:70)
at org.junit.runners.ParentRunner.run(ParentRunner.java:363)
at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.run(SpringJUnit4ClassRunner.java:190)
at org.junit.runner.JUnitCore.run(JUnitCore.java:137)
at com.intellij.junit4.JUnit4IdeaTestRunner.startRunnerWithArgs(JUnit4IdeaTestRunner.java:68)
at com.intellij.rt.execution.junit.IdeaTestRunner$Repeater.startRunnerWithArgs(IdeaTestRunner.java:47)
at com.intellij.rt.execution.junit.JUnitStarter.prepareStreamsAndStart(JUnitStarter.java:242)
at com.intellij.rt.execution.junit.JUnitStarter.main(JUnitStarter.java:70)

Is it a fault of my configuration or there is no possibility to use Mockito's components in Spring Integration?

When I use some simple method reference like returning log::error or log::info in MessageError and MessageHandler it works properly .

I also tried to use MockIntegration.mockMessageHandler(); but result is the same (exception) because it use Mockito's mock underneath.

Answer 1

Mockito was in 1.x version which was incompatible with Spring Integration with 5.x version. Upgrading Mockito into 2.x (2.22.0) fixed this issue and works with Spring Integration (5.0.8.RELEASE).