Question

我们正在方法内部创建一个RestTemplate对象，我想模拟该对象。

尝试使用powermockito却遇到异常，尝试使用其他方法模拟对象，但仍然无助。

org.mockito.exceptions.base.MockitoException: Field 'eAPIRestService' annotated with @InjectMocks is null.
Please make sure the instance is created *before* MockitoAnnotations.initMocks();
Example of correct usage:
   class SomeTest {
      @InjectMocks private Foo foo = new Foo();

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

    at org.mockito.internal.runners.JUnit45AndHigherRunnerImpl$1.withBefores(JUnit45AndHigherRunnerImpl.java:27)
    at org.junit.runners.BlockJUnit4ClassRunner.methodBlock(BlockJUnit4ClassRunner.java:276)
    at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:78)
    at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:57)
    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.junit.runners.ParentRunner.run(ParentRunner.java:363)
    at org.mockito.internal.runners.JUnit45AndHigherRunnerImpl.run(JUnit45AndHigherRunnerImpl.java:37)
    at org.mockito.runners.MockitoJUnitRunner.run(MockitoJUnitRunner.java:62)
    at org.eclipse.jdt.internal.junit4.runner.JUnit4TestReference.run(JUnit4TestReference.java:89)
    at org.eclipse.jdt.internal.junit.runner.TestExecution.run(TestExecution.java:41)
    at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:541)
    at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:763)
    at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.run(RemoteTestRunner.java:463)
    at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.main(RemoteTestRunner.java:209)

这是我在模拟剩余模板的测试用例

@RunWith(MockitoJUnitRunner.class)
public class Test{

    @InjectMocks
    private MyService myService

    RestTemplate restTemplate;

    public Test() throws Exception {
        restTemplate = new RestTemplate();
        PowerMockito.whenNew(RestTemplate.class).withNoArguments().thenReturn(restTemplate);
    }
  ..........
}

Answer 1

错误消息实际上为您提供了答案。

@InjectMocks
private MyService myService = new MyService();

应该解决您的问题。

模拟其余模板引发异常

1 个答案: