嘲弄的对象仍在调用方法（Mockito + Kotlin）

我试图测试这个类：

class LoginPresenter(val mPostman: Postman) : ContractLoginPresenter, Validator.ValidationListener { private var view: ContractLoginView? = null override fun setView(_view: BaseView) { view = _view as ContractLoginView } override fun getValidationListener(): Validator.ValidationListener { return this } override fun onValidationSucceeded() { view!!.getContext().showCircularProgressBar() mPostman.login(view!!.getUsername(), view!!.getPassword()) } 

为此，我创建了这个测试类：

 @RunWith(PowerMockRunner::class) @PrepareForTest(App::class) class TestLoginPresenter { var mockedPostman = mock(Postman::class.java) var mockedComponent = mock(MainComponent::class.java) var mockedView = mock(ContractLoginView::class.java) var mockedContext = mock(AppCompatActivity::class.java) var loginPresenter: LoginPresenter? = null @Before fun setUp() { PowerMockito.mockStatic(App::class.java) `when`(App.component).thenReturn(mockedComponent) loginPresenter = LoginPresenter(mockedPostman) loginPresenter!!.setView(mockedView) `when`(mockedView.getContext()).thenReturn(mockedContext) } @Test fun testGetValidationListener() { assertEquals(loginPresenter!!.getValidationListener(), loginPresenter) } @Test fun testOnValidationSucceeded() { val password = "password" val username = "username" `when`(mockedView.getPassword()).thenReturn(password) `when`(mockedView.getUsername()).thenReturn(username) //Mockito.doNothing().`when`(mockedPostman).login(anyString(), anyString()) loginPresenter!!.onValidationSucceeded() verify(mockedPostman.login(username, password)) } 

下面的堆栈跟踪失败：

 java.lang.NullPointerException at br.com.tyllt.controller.Postman.login(Postman.kt:26) at br.com.tyllt.presenter.LoginPresenter.onValidationSucceeded(LoginPresenter.kt:43) at br.com.tyllt.presenter.TestLoginPresenter.testOnValidationSucceeded(TestLoginPresenter.kt:63) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.junit.internal.runners.TestMethod.invoke(TestMethod.java:68) at org.powermock.modules.junit4.internal.impl.PowerMockJUnit44RunnerDelegateImpl$PowerMockJUnit44MethodRunner.runTestMethod(PowerMockJUnit44RunnerDelegateImpl.java:310) at org.junit.internal.runners.MethodRoadie$2.run(MethodRoadie.java:89) at org.junit.internal.runners.MethodRoadie.runBeforesThenTestThenAfters(MethodRoadie.java:97) at org.powermock.modules.junit4.internal.impl.PowerMockJUnit44RunnerDelegateImpl$PowerMockJUnit44MethodRunner.executeTest(PowerMockJUnit44RunnerDelegateImpl.java:294) at org.powermock.modules.junit4.internal.impl.PowerMockJUnit47RunnerDelegateImpl$PowerMockJUnit47MethodRunner.executeTestInSuper(PowerMockJUnit47RunnerDelegateImpl.java:127) at org.powermock.modules.junit4.internal.impl.PowerMockJUnit47RunnerDelegateImpl$PowerMockJUnit47MethodRunner.executeTest(PowerMockJUnit47RunnerDelegateImpl.java:82) at org.powermock.modules.junit4.internal.impl.PowerMockJUnit44RunnerDelegateImpl$PowerMockJUnit44MethodRunner.runBeforesThenTestThenAfters(PowerMockJUnit44RunnerDelegateImpl.java:282) at org.junit.internal.runners.MethodRoadie.runTest(MethodRoadie.java:87) at org.junit.internal.runners.MethodRoadie.run(MethodRoadie.java:50) at org.powermock.modules.junit4.internal.impl.PowerMockJUnit44RunnerDelegateImpl.invokeTestMethod(PowerMockJUnit44RunnerDelegateImpl.java:207) at org.powermock.modules.junit4.internal.impl.PowerMockJUnit44RunnerDelegateImpl.runMethods(PowerMockJUnit44RunnerDelegateImpl.java:146) at org.powermock.modules.junit4.internal.impl.PowerMockJUnit44RunnerDelegateImpl$1.run(PowerMockJUnit44RunnerDelegateImpl.java:120) at org.junit.internal.runners.ClassRoadie.runUnprotected(ClassRoadie.java:34) at org.junit.internal.runners.ClassRoadie.runProtected(ClassRoadie.java:44) at org.powermock.modules.junit4.internal.impl.PowerMockJUnit44RunnerDelegateImpl.run(PowerMockJUnit44RunnerDelegateImpl.java:122) at org.powermock.modules.junit4.common.internal.impl.JUnit4TestSuiteChunkerImpl.run(JUnit4TestSuiteChunkerImpl.java:106) at org.powermock.modules.junit4.common.internal.impl.AbstractCommonPowerMockRunner.run(AbstractCommonPowerMockRunner.java:53) at org.powermock.modules.junit4.PowerMockRunner.run(PowerMockRunner.java:59) at org.junit.runner.JUnitCore.run(JUnitCore.java:137) at com.intellij.junit4.JUnit4IdeaTestRunner.startRunnerWithArgs(JUnit4IdeaTestRunner.java:119) at com.intellij.junit4.JUnit4IdeaTestRunner.startRunnerWithArgs(JUnit4IdeaTestRunner.java:42) at com.intellij.rt.execution.junit.JUnitStarter.prepareStreamsAndStart(JUnitStarter.java:234) at com.intellij.rt.execution.junit.JUnitStarter.main(JUnitStarter.java:74) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at com.intellij.rt.execution.application.AppMain.main(AppMain.java:144) Process finished with exit code -1 

堆栈跟踪点是邮递员登录乐趣的最后一行的地方：

 open class Postman(val mMessenger: TylltEndPoint) { fun login(email: String, password: String) { val user = User() user.email = email user.password = password mMessenger.login(user).enqueue(ResponseWrapperCallback(EventCatalog.e0014)) } 

一旦邮差被嘲笑，为什么在世界上它调用登录（）的实际实现的乐趣？