mockito | 易学教程

mockito: Is there a way of capturing the return value of stubbed method?

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问题 If I mock a method to return a new instance of some object, how can I capture the returned instance? E.g.: when(mock.someMethod(anyString())).thenAnswer(new Answer() { Object answer(InvocationOnMock invocation) { Object[] args = invocation.getArguments(); Object mock = invocation.getMock(); return new Foo(args[0]) } }); Obviously, I can have a field of type Foo and inside answer set it to the new instance, but is there a nicer way? Something like ArgumentCaptor? 回答1: Looks like you want to

Spring Best practice for Dependency Injection

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问题 I have some confusion about DI in spring public interface A{ void methodA(); } public class AImpl implements A{ public void methodA(){ // todo something } } public interface B{ void methodB(); } public class BImpl implements B{ public void methodB(){ //todo somethong } } I have two interface A and B and 2 class implements it. So, I have 2 Class that implement interface C, it depend on Interface A and B This is case 1: public interface C{ void methodC(); } public class CAutowired implements C{

Robolectric buildActivity() with Mockito spy?

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问题 It seems to me that building an Activity unit test with Robolectric's lifecycle utilities (starting with Robolectric.buildActivity() ) and spying on the same Activity with a Mockito spy are mutually exclusive. Because buildActivity() controls the construction of the Activity object, the only place to add a spy for the Activity is after calling buildActivity() . However, the spy doesn't function properly when it's added after the fact. This is especially true when spying for side effects of

在spring中简单使用Mockito解决Bean依赖树问题

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前提本文不是针对Mockito的入门教学，主要叙述如何简单的使用Mockito解决Bean依赖树问题，对于Mockito的学习请找其他的文章或者查阅官方文档基本概念 Junit初始化及存在的问题 spring应用在unit test时，test是独立运行的，所以需要自行 init ApplicationContext，启动 Ioc容器。 Junit要求： Test类中涉及的所有Spring bean 注入成功才能完成applicationContext初始化，并启动IOC容器，否则无法执行unit test。 ApplicationContext初始化的两种方式手动注入（使用 @Bean或者 @Component 注入所需的类）编写@Configuration 类（使用@ComponentScan 指定扫描beans）两种初始化方式存在的问题方式一：所需的beans中，一个bean少注入了就会导致无法初始化上下文需要注入的bean太多时，需要花费大量的时间和精力，排查缺漏难度大方式二：颗粒度难以把控，随着项目规模变大之后，可能导致bean导入过多，单元测试跑很久才能通过当项目规模大了之后，bean之间的依赖往往是复杂的，扫描bean的方式可能出现一些不属于自己模块的未知问题或者某些中间件在unitTest环境无法正常启动，导致无法初始化上下文

EasyMock deep stubs

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问题 I have to mock the following security step using EasyMock or UnitilsMock. Could you please suggest a way to achieve this? String id = context.getCallerPrincipal().getName(); This step is related to security. So I will not be able to create a Principle object and make a two tier mocking. I know that mockito handles such stuff easily as follows, @Mock(answer = Answers.RETURNS_DEEP_STUBS) SessionContext mockContext; But, I need a similar solution using EasyMock or Unitils Mock. The complete code

How to write junit test cases for rest controller, service and dao layer using springboot?

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问题 How to write JUnit Test cases for RestController , Service and DAO layer ? I've tried MockMvc @RunWith(SpringRunner.class) public class EmployeeControllerTest { private MockMvc mockMvc; private static List<Employee> employeeList; @InjectMocks EmployeeController employeeController; @Mock EmployeeRepository employeeRepository; @Test public void testGetAllEmployees() throws Exception { Mockito.when(employeeRepository.findAll()).thenReturn(employeeList); assertNotNull(employeeController

How to write junit test cases for rest controller, service and dao layer using springboot?

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How to Unit-Test Thread which takes time to perform action

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问题 I have Thread which runs while the program runs and polls a queue and check whether it has object and if yes then it calls method on the object Here is the code : while(isRunning){ synchronized (loginQueue) { if(loginQueue.peek() != null) { Object[] loginObjectWithConnection = loginQueue.poll(); tryLogin(loginObjectWithConnection); } } try { Thread.sleep(10); } catch (InterruptedException e) { e.printStackTrace(); } } Here is the tryLogin method private void tryLogin(Object[]

Mockito runnable: wanted but not invoked?

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问题 I want to make sure I'm not doing something terribly wrong before I submit a bug report. This is really weird. The setup: robolectric 3.0; mockito 1.10.19 Unit under test: public BbScrollView( Context context ){ this( context, null ); } public BbScrollView( Context context, AttributeSet attrs ) { super( context, attrs ); mScrollTask = new Runnable() { public void run() { checkForStopped(); } }; } public void checkForStopped(){ int newPosition = getScrollY(); // the rest is irrelevant , but I

Mocking static private final variable using Powermock?

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问题 I have a utility class which is a final class. There i have used injection for injecting LOGGER. public final class Utilities { @Inject private static Logger.ALogger LOGGER; private Utilities() { //this is the default constructor. so there is no implementation } public static String convertToURl(string input){ try{ //do some job }catch(IllegalArgumentException ex){ LOGGER.error("Invalid Format", ex); } } } While I writing unit testing for this method i have to mock LOGGER otherwise it will