Я пытаюсь провести модульное тестирование очень базового класса, который расширяет некоторые классы из Vaadin
framework.Но я получаю NullPointerException
при запуске теста.
Нужно ли издеваться над классом UI
?Пожалуйста, руководство.
Журнал ошибок:
into the enter method......
java.lang.NullPointerException
at com.jpmorgan.tss.payhub.template.views.MainView.enter(MainView.java:46)
at com.jpmorgan.tss.payhub.template.views.MainViewTest.testEnter(MainViewTest.java:17)
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.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$2.evaluate(ParentRunner.java:229)
at org.junit.runners.ParentRunner.run(ParentRunner.java:309)
at org.junit.runner.JUnitCore.run(JUnitCore.java:160)
at com.intellij.junit4.JUnit4IdeaTestRunner.startRunnerWithArgs(JUnit4IdeaTestRunner.java:68)
at com.intellij.rt.execution.junit.IdeaTestRunner$Repeater.startRunnerWithArgs(IdeaTestRunner.java:47)
at com.intellij.rt.execution.junit.JUnitStarter.prepareStreamsAndStart(JUnitStarter.java:242)
at com.intellij.rt.execution.junit.JUnitStarter.main(JUnitStarter.java:70)
MainViewTest.java
public class MainViewTest {
@Mock
ViewChangeListener.ViewChangeEvent viewChangeEvent = Mockito.mock(ViewChangeListener.ViewChangeEvent.class);
@Test
public void testEnter() {
MainView instance = new MainView();
instance.enter(viewChangeEvent);
assertNotNull(instance);
}
}
MainView.Java (тестируемый класс)
@Component
@Scope("prototype")
@VaadinView(MainView.NAME)
@Title("Mortgage Banking")
@Theme("PymtTemplateUI")
public class MainView extends VerticalLayout implements View {
@PostConstruct
public void PostConstruct() {
}
@Override
public void enter(ViewChangeListener.ViewChangeEvent event) {
System.out.println("into the enter method......");
UI ui = UI.getCurrent();
Navigator nav = ui.getNavigator();
nav.navigateTo("homePageView");
}
}