可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效,请关闭广告屏蔽插件后再试):
问题:
Mockito appears to be throwing an UnfinishedVerificationException
when I think I've done everything correctly. Here's my partial test case:
HttpServletRequest req = mock(HttpServletRequest.class);
when(req.getHeader("Authorization")).thenReturn("foo");
HttpServletResponse res = mock(HttpServletResponse.class);
classUnderTest.doMethod(req, res); // Use the mock
verify(res, never());
verify(req).setAttribute(anyString(), anyObject());
And here's the partial class and method:
class ClassUnderTest extends AnotherClass {
@Override
public String doMethod(ServletRequest req, ServletRequest res) {
// etc.
return "someString";
}
}
Ignoring the fact that you should never mock interfaces you don't own, why is Mockito giving me the following message?
org.mockito.exceptions.misusing.UnfinishedVerificationException:
Missing method call for verify(mock) here:
-> at (redacted)
Example of correct verification:
verify(mock).doSomething()
Also, this error might show up because you verify either of: final/private/equals()/hashCode() methods.
Those methods *cannot* be stubbed/verified.
at [test method name and class redacted]
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:47)
at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:12)
at org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:44)
at org.junit.internal.runners.statements.InvokeMethod.evaluate(InvokeMethod.java:17)
at org.junit.runners.ParentRunner.runLeaf(ParentRunner.java:271)
at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:70)
at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:50)
at org.junit.runners.ParentRunner$3.run(ParentRunner.java:238)
at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:63)
at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:236)
at org.junit.runners.ParentRunner.access$000(ParentRunner.java:53)
at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:229)
at org.junit.runners.ParentRunner.run(ParentRunner.java:309)
at org.mockito.internal.runners.JUnit45AndHigherRunnerImpl.run(JUnit45AndHigherRunnerImpl.java:37)
at org.mockito.runners.MockitoJUnitRunner.run(MockitoJUnitRunner.java:62)
at org.junit.runner.JUnitCore.run(JUnitCore.java:160)
... etc
回答1:
I just came across this my self and it caused me a lot of confusion.
As David mentioned above Mockito reports errors in the next Mockito method call which may not be in the same test method. While the exception message does contain a reference to the actual place the error occurred I find having incorrect tests failing counter productive to the testing process. And the simpler the tests the more likely an error is to show up in the next test!
Here is an easy fix that will ensure errors appear in the correct test method:
@After
public void validate() {
validateMockitoUsage();
}
From the Mockito documentation here:
Mockito throws exceptions if you misuse it so that you know if your
tests are written correctly. The gotcha is that Mockito does the
validation next time you use the framework (e.g. next time you verify,
stub, call mock etc.). But even though the exception might be thrown
in the next test, the exception message contains a navigable stack
trace element with location of the defect. Hence you can click and
find the place where Mockito was misused.
Sometimes though, you might
want to validate the framework usage explicitly. For example, one of
the users wanted to put validateMockitoUsage() in his @After method so
that he knows immediately when he misused Mockito. Without it, he
would have known about it not sooner than next time he used the
framework. One more benefit of having validateMockitoUsage() in @After
is that jUnit runner will always fail in the test method with defect
whereas ordinary 'next-time' validation might fail the next test
method. But even though JUnit might report next test as red, don't
worry about it and just click at navigable stack trace element in the
exception message to instantly locate the place where you misused
mockito.
回答2:
This might also be caused if you try to verify
a method which expects primitive arguments with any()
:
For example, if our method has this signature:
method(long l, String s);
And you try to verify it like this, it will fail with aforementioned message:
verify(service).method(any(), anyString());
Change it to anyLong()
and it will work:
verify(service).method(anyLong(), anyString());
回答3:
I was getting this same error due to using any()
with a boolean
parameter, when apparently it needed to be anyBoolean()
.
回答4:
For me the issue turned out to be a missing bean declaration in the test context xml. It was for a custom aspect class used by another class, an instance of which is a parameter to the constructor of the class which is the parameter to failing verify() call. So I added the bean declaration to the context xml and it worked fine after that.
回答5:
I had similar exception with class MyRepository
org.mockito.exceptions.misusing.UnfinishedVerificationException:
Missing method call for verify(mock) here:
-> at MyRepository$$FastClassBySpringCGLIB$$de8d8358.invoke()
Example of correct verification:
verify(mock).doSomething()
The problem was resolved when I created interface for MyRepository, and mock interface, but not implementation.
It seems spring creates some CGLIB proxies and it leads to UnfinishedVerificationException exception.
回答6:
I had a similar problem, i found a way to solve this. Mock objects which you for verify haven't been reseted, so you should reset it .You can reset(mock) before your test case function, it may be helpful.
回答7:
I'm not sure where are your "classUnderTest" come from, but please keep sure it's mocked, not a real one.
I have the same issue for my test case below:
MyAgent rpc = new MyAgent("myNodeName");
...
rpc.doSomething();
...
PowerMockito.verifyPrivate(rpc).invoke("initPowerSwitch");
PowerMockito.verifyPrivate(rpc).invoke("init", "192.168.0.23", "b2", 3);
But it's disappeared for the following test case:
MyAgent rpc = PowerMockito.spy(new MyAgent("myNodeName"));
...
rpc.doSomething();
...
PowerMockito.verifyPrivate(rpc).invoke("initPowerSwitch");
PowerMockito.verifyPrivate(rpc).invoke("init", "192.168.0.23", "b2", 3);
Attention, the Object rpc should be mocked by PowerMockito.spy(...).
回答8:
With Junit 5, you can add the following to show more meaningful Mockito exceptions in the console
@AfterEach
public void validate() {
validateMockitoUsage()
}
Also see this answer: https://stackoverflow.com/a/22550055/8073652
回答9:
If you try to verify a private or package-private method with Mockito.verify you will get this error.
If you don't want to use PowerMockito you can set your method as protected and I advise you to add the @VisibleForTesting tag:
Before:
void doSomething() {
//Some behaviour
}
After :
@VisibleForTesting
protected void doSomething() {
//Some behaviour
}