Mockito无法通过Pact契约测试

Question

Mockito ArgumentCaptor在JUnit5 Pact契约测试中失败

我发现一个奇怪的行为时使用Pact与Mockito (JUnit5):

我想在测试中获得Manager类的Client.send(payload)中payload的内容:

public void send(Event event){
var payload = new SendEvent(event);
client.send(payload);
}

所以在测试中，我们通常可以检查Client.send(payload)调用，没有任何问题:

manager.sendEvent(foo);
verify(client).send(payload);

虽然使用ArgumentCaptor获取内容结果如下:

@Captor
private ArgumentCaptor<Event> captor;
@State("state")
@PactVerifyProvider("pactVerifyProvider")
public String pactEvent(){
manager.sendEvent(foo);
verify(client).send(captor.capture());
}

=> Verification Failed - Failed to invoke provider method '...'

有人知道这是一个已知的问题吗?当使用Pact时，基本上是不可能抓取内容的。同样的代码，只有纯Mockito没有任何缺陷。

全部加:

Event
generates a message which
Verification Failed - Failed to invoke provider method 'sendEvent'
...

java.lang.AssertionError: Service - Generates message 'event'  
Failures:
1) Event
1.1) Failed to invoke provider method 'sendEvent'
at au.com.dius.pact.provider.junit5.PactVerificationContext.verifyInteraction(PactVerificationContext.kt:63)
at test.ContractTest.testTemplate(ProviderContractTest.java:80) -> thats where "context.verifyInteraction();"" is used
at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.accept(ForEachOps.java:183)
at java.base/java.util.ArrayList$ArrayListSpliterator.forEachRemaining(ArrayList.java:1655)
at java.base/java.util.ArrayList$ArrayListSpliterator.forEachRemaining(ArrayList.java:1655)
at java.base/java.util.stream.ForEachOps$ForEachOp.evaluateSequential(ForEachOps.java:150)
at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.evaluateSequential(ForEachOps.java:173)
at java.base/java.util.stream.ReferencePipeline.forEach(ReferencePipeline.java:497)
at java.base/java.util.ArrayList.forEach(ArrayList.java:1541)
at java.base/java.util.ArrayList.forEach(ArrayList.java:1541)
Process finished with exit code -1

所以看起来ArgumentCaptors不能与Pact一起使用?

编辑:更正了ArgumentCaptor并添加了全栈跟踪

Answer 1

我找到了解决办法:

@State("state")
@PactVerifyProvider("pactVerifyProvider")
public String pactEvent(){
manager.sendEvent(foo);
verify(client).send(captor.capture());
}

@State需要引用一个空方法，所以设置一个独立于@PactVerifyProvider的空状态。