带PowerMockRunner的静态函数

Question

我有一个从缓存实例中获取数据的函数，我需要对其进行模拟

public List<Map<String, Object>> getDuplicateCheckNotificationJSON(String identityAction) {
        IdentityActions identityActions = IdentityActionsCache.getInstance().getIdentityActionsByName(identityAction);


        List<RequestCategoryView> requestCategoryViews= identityActions.getReqCategory().getReqCategoryViews();
        for (RequestCategoryView requestCategoryView : requestCategoryViews) {
        ...
        }
        return null;
    }

IdentityActionsCache类

public static IdentityActionsCache getInstance() {
        if(null == singleton) {
            singleton = new IdentityActionsCache();
            singleton.init();
        }
        return singleton;
    }

public IdentityActions getIdentityActionsByName(String actionName){
    xyz
    return result;
}

JUnit与powermock

@RunWith(PowerMockRunner.class)
@PrepareForTest({IdentityService.class, IdentityActionsCache.class})
public class IdentityServiceTest  {

@InjectMocks
IdentityService identityService;



 @Test
    public void getDuplicateCheckNotificationJSONTest() {
        List<Map<String, Object>> result;
        try {
            PowerMockito.mockStatic(ServiceLocator.class);
            PowerMockito.mockStatic(IdentityActionsCache.class);
            when(ServiceLocator.findService("workflowConfigDataService")).thenReturn(workflowConfigDataService);

            IdentityActions identityActions = new IdentityActions();

when(IdentityActionsCache.getInstance().getIdentityActionsByName(action)).thenReturn(identityActions);

            result = identityService.getDuplicateCheckNotificationJSON(action);


            assertTrue(result.equals(1l));
        } catch (ALNTApplicationException e) {
            assertFalse(false);
        } 
    }
}

我无法模仿IdentityActionsCache。getInstance（）。getIdentityActionsByName（操作）获取空指针

JAVAcom上的lang.NullPointerException。alnt公司。idm。使用者身份服务。IdentityService测试。sun上的getDuplicateCheckNotificationJSONTest（IdentityServiceTest.java:70）。反映NativeMethodAccessorImpl。在sun调用0（本机方法）。反映NativeMethodAccessorImpl。在sun调用（未知源）。反映DelegatingMethodAccessorImpl。在java上调用（未知源）。lang.reflect。方法在组织中调用（未知源）。朱尼特。内部的跑步者。测试方法。在org调用（TestMethod.java:68）。powermock。模块。junit4。内部的实施。PowerMockJUnit44RunnerDelegateImpl$PowerMockJUnit44MethodRunner。org上的runTestMethod（PowerMockJUnit44RunnerDelegateImpl.java:310）。朱尼特。内部的跑步者。MethodRoadie 2美元。在org上运行（MethodRoadie.java:89）。朱尼特。内部的跑步者。MethodRoadie。在org上运行beforesthentestthenauts（MethodRoadie.java:97）。powermock。模块。junit4。内部的实施。PowerMockJUnit44RunnerDelegateImpl$PowerMockJUnit44MethodRunner。org上的executeTest（PowerMockJUnit44RunnerDelegateImpl.java:294）。powermock。模块。junit4。内部的实施。PowerMockJUnit47RunnerDelegateImpl$PowerMockJUnit47MethodRunner。org上的ExecuteTestinsteSuper（PowerMockJUnit47RunnerDelegateImpl.java:127）。powermock。模块。junit4。内部的实施。PowerMockJUnit47RunnerDelegateImpl$PowerMockJUnit47MethodRunner。org上的executeTest（PowerMockJUnit47RunnerDelegateImpl.java:82）。powermock。模块。junit4。内部的实施。PowerMockJUnit44RunnerDelegateImpl$PowerMockJUnit44MethodRunner。在org上运行beforesthentestthenurts（powermockjunit44runnerdelegateinpl.java:282）。朱尼特。内部的跑步者。MethodRoadie。在org上运行测试（MethodRoadie.java:87）。朱尼特。内部的跑步者。MethodRoadie。在org上运行（MethodRoadie.java:50）。powermock。模块。junit4。内部的实施。PowerMockJUnit44RunnerDelegateImpl。org上的invokeTestMethod（powermockjunit44runnerdelegatepimpl.java:207）。powermock。模块。junit4。内部的实施。PowerMockJUnit44RunnerDelegateImpl。org上的runMethods（PowerMockJUnit44RunnerDelegateImpl.java:146）。powermock。模块。junit4。内部的实施。PowerMockJUnit44RunnerDelegateImpl 1美元。在org上运行（PowerMockJUnit44RunnerDelegateImpl.java:120）。朱尼特。内部的跑步者。ClassRoadie。org上的runUnprotected（ClassRoadie.java:34）。朱尼特。内部的跑步者。ClassRoadie。org上的runProtected（ClassRoadie.java:44）。powermock。模块。junit4。内部的实施。PowerMockJUnit44RunnerDelegateImpl。在org上运行（PowerMockJUnit44RunnerDelegateImpl.java:122）。powermock。模块。junit4。常见的内部的实施。JUnit4TestSuiteChunkerImpl。在org上运行（JUnit4TestSuiteChunkerImpl.java:106）。powermock。模块。junit4。常见的内部的实施。AbstractCommonPowerMockRunner。在org上运行（AbstractCommonPowerMockRunner.java:53）。powermock。模块。junit4。PowerMockRunner。在org上运行（PowerMockRunner.java:59）。日食jdt。内部的junit4。跑步者JUnit4TestReference。在org上运行（JUnit4TestReference.java:86）。日食jdt。内部的朱尼特。跑步者测试执行。在org上运行（TestExecution.java:38）。日食jdt。内部的朱尼特。跑步者RemoteTestRunner。在org上运行测试（RemoteTestRunner.java:538）。日食jdt。内部的朱尼特。跑步者RemoteTestRunner。在org上运行测试（RemoteTestRunner.java:760）。日食jdt。内部的朱尼特。跑步者RemoteTestRunner。在org上运行（RemoteTestRunner.java:460）。日食jdt。内部的朱尼特。跑步者RemoteTestRunner。main（RemoteTestRunner.java:206）

Answer 1

这是因为您需要模拟静态调用和实例调用

@RunWith(PowerMockRunner.class)
@PrepareForTest({IdentityService.class, IdentityActionsCache.class})
public class IdentityServiceTest  {

    @InjectMocks
    IdentityService identityService;

    @Test
    public void getDuplicateCheckNotificationJSONTest() {
        List<Map<String, Object>> result;
        try {
            //Arrange

            //...other members missing

            PowerMockito.mockStatic(ServiceLocator.class);
            when(ServiceLocator.findService("workflowConfigDataService"))
                .thenReturn(workflowConfigDataService);

            IdentityActions identityActions = new IdentityActions();
            IdentityActionsCache cacheMock = mock(IdentityActionsCache.class); //instance mock
            when(cacheMock.getIdentityActionsByName(action)).thenReturn(identityActions);

            PowerMockito.mockStatic(IdentityActionsCache.class);
            when(IdentityActionsCache.getInstance()).thenReturn(cacheMock); //static call returns instance

            //Act
            result = identityService.getDuplicateCheckNotificationJSON(action);

            //Assert
            assertTrue(result.equals(1l));
        } catch (ALNTApplicationException e) {
            assertFalse(false);
        } 
    }
}