Question

我侦察一个对象来测试一个方法

List<HighWay> mockedList = mock(List.class);
request = Mockito.spy(new HighWayRequest());
Mockito.doReturn(mockedList).when(request).getHighWays();
request.updateNewHighWay(repository);

updateNewHighWay方法调用我要返回列表的getHighWays方法，而真正的请求方法就是那样

public void updateNewHighWay(HighWayRepository repository) {
        List<HighWay> total = getHighWays();
        List<HighWay> willSave = new ArrayList<HighWay>();
        for (HighWay highWay : total) {
            if (!repository.exists(highWay.getId())) {
                willSave.add(highWay);
                repository.save(highWay);
            }
        }
        while (total.size() == willSave.size()) {
            total = getHighWays();
            willSave = new ArrayList<HighWay>();
            for (HighWay highWay : total) {
                if (!repository.exists(highWay.getId())) {
                    willSave.add(highWay);
                    repository.save(highWay);
                }
            }
        }
    }
public List<HighWay> getHighWays() {
        // TODO Auto-generated method stub
        return null;
    }

但实际上它会引发一场愚蠢的行为。

java.lang.NullPointerException at chinahighway.HighWayRequest.updateNewHighWay（HighWayRequest.java:206） at chinahighway.HttpTest.testpageinsert（HttpTest.java:269）at at sun.reflect.NativeMethodAccessorImpl.invoke0（Native Method）at sun.reflect.NativeMethodAccessorImpl.invoke（NativeMethodAccessorImpl.java:57）在 sun.reflect.DelegatingMethodAccessorImpl.invoke（DelegatingMethodAccessorImpl.java:43）在java.lang.reflect.Method.invoke（Method.java:606）at org.junit.runners.model.FrameworkMethod $ 1.runReflectiveCall（FrameworkMethod.java:47）在 org.junit.internal.runners.model.ReflectiveCallable.run（ReflectiveCallable.java:12）在 org.junit.runners.model.FrameworkMethod.invokeExplosively（FrameworkMethod.java:44）在 org.junit.internal.runners.statements.InvokeMethod.evaluate（InvokeMethod.java:17）在 org.springframework.test.context.junit4.statements.RunBeforeTestMethodCallbacks.evaluate（RunBeforeTestMethodCallbacks.java:73）在 org.springframework.test.context.junit4.statements.RunAfterTestMethodCallbacks.evaluate（RunAfterTestMethodCallbacks.java:82）在 org.springframework.test.context.junit4.statements.SpringRepeat.evaluate（SpringRepeat.java:73）在org.junit.runners.ParentRunner.runLeaf（ParentRunner.java:271）at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.runChild（SpringJUnit4ClassRunner.java:217）在 org.springframework.test.context.junit4.SpringJUnit4ClassRunner.runChild（SpringJUnit4ClassRunner.java:83）在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 at org.junit.runners.ParentRunner.access $ 000（ParentRunner.java:53）at at org.junit.runners.ParentRunner $ 2.evaluate（ParentRunner.java:229）at at org.springframework.test.context.junit4.statements.RunBeforeTestClassCallbacks.evaluate（RunBeforeTestClassCallbacks.java:61）在 org.springframework.test.context.junit4.statements.RunAfterTestClassCallbacks.evaluate（RunAfterTestClassCallbacks.java:68）在org.junit.runners.ParentRunner.run（ParentRunner.java:309）at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.run（SpringJUnit4ClassRunner.java:163）在 org.eclipse.jdt.internal.junit4.runner.JUnit4TestReference.run（JUnit4TestReference.java:50）在 org.eclipse.jdt.internal.junit.runner.TestExecution.run（TestExecution.java:38）在 org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests（RemoteTestRunner.java:459）在 org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests（RemoteTestRunner.java:675）在 org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.run（RemoteTestRunner.java:382）在 org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.main（RemoteTestRunner.java:192）

为什么doReturn不起作用？如何让getHighWays方法返回我想要的列表？

请帮助我非常感谢！

真正的方法调用mock方法但不起作用

0 个答案: