相关疑难解决方法(0)

我有一个最后的课,类似这样:

public final class RainOnTrees{

   public void startRain(){

        // some code here
   }
}

我在其他类中使用此类,如下所示:

public class Seasons{

   RainOnTrees rain = new RainOnTrees();

   public void findSeasonAndRain(){

        rain.startRain();

    }
}

在我的JUnit测试类中,Seasons.java我想模拟这个RainOnTrees类.我怎么能和Mockito一起做这件事？

我有一个非常简单的测试用例,它使用的是Mockito和Spring Test框架.当我做

when(pcUserService.read("1")).thenReturn(pcUser);

我得到了这个例外.

org.mockito.exceptions.misusing.MissingMethodInvocationException: 
when() requires an argument which has to be 'a method call on a mock'.
For example:
    when(mock.getArticles()).thenReturn(articles);

Also, this error might show up because:
1. you stub either of: final/private/equals()/hashCode() methods.
   Those methods *cannot* be stubbed/verified.
2. inside when() you don't call method on mock but on some other object.

    at com.project.cleaner.controller.test.PcUserControllerTest.shouldGetPcUser(PcUserControllerTest.java:93)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
    at java.lang.reflect.Method.invoke(Unknown Source)
    at org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:44)

我尝试过不同的方法,但继续收到此错误消息.我正在使用Spring 3.1.0.RELEASE和Mockito.请分享并指导我正确的方向.

我正在使用Mockito来模拟我正在编写测试的同一个类中的方法.我已经在SO上看到了其他答案(同一类中的模拟方法),但可能是我误解了它们,因为我遇到了问题.

 class Temp() {

    public boolean methodA(String param) {

         try {

             if(methodB(param))
                   return true;

             return false;
         } catch (Exception e) {
               e.printStackTrace();
         }
    }
 }

我的测试方法:

 @Test
 public void testMethodA() {

    Temp temp = new Temp();
    Temp spyTemp = Mockito.spy(temp);

    Mockito.doReturn(true).when(spyTemp).methodB(Mockito.any()); 
    boolean status = temp.methodA("XYZ");

    Assert.assertEquals(true, status);
 }

然而,由于方法B的定义被执行,我打印出了预期.我的理解是使用spyTemp来模拟methodB的定义.然而,情况似乎并非如此.

有人可以解释我哪里出错吗？

我正在从我正在进行的项目中删除Powermock,所以我试图仅用Mockito(mockito-core-2.2.28)重写一些现有的单一测试.

当我运行测试时,我有以下错误:

org.mockito.exceptions.base.MockitoException:

不能模拟/间谍类com.ExternalpackagePath.Externalclass

Mockito不能嘲笑/间谍,因为:

• 最后一堂课

我知道,这个问题已经被问(如何嘲弄与一的Mockito final类,调用final类与静态的Mockito方法Mock对象),但我没有找到我要找的答案.

这是我的代码的摘录:

public class MyClassToTest extends TestCase {
    private MyClass myClass;
    @Mock private Externalclass ext;  // This class is final, I would like to mock it

    @Override
    protected void setUp() throws Exception {
        MockitoAnnotations.initMocks(this); // <<<< The exception is thrown here
        ext = Mockito.mock(Externalclass.class);
    }
}

由于文档的Mockito中提到(https://github.com/mockito/mockito/wiki/What%27s-new-in-Mockito-2,§Mock的unmockable),我增加了org.mockito.plugins.MockMaker文件.这是我项目的树:

• 项目
  • SRC
    • com.packagePath.myPackage
      • 我的课
  • 测试
    • com.packagePath.myPackage
      • myClassToTest
    • 资源
      • 的Mockito的扩展
        • org.mockito.plugins.MockMaker

我还尝试将"resources"目录放在"src"中,在一个名为"test"的子目录中,但结果仍然相同.

我认为用Mockito v2嘲笑决赛是可能的.有人知道这里缺少什么吗？

谢谢!

我没有嘲笑ResourceBundle.getString().

这是我的代码:

ResourceBundle schemaBundle = Mockito.mock(ResourceBundle.class);
Mockito.when(schemaBundle.getString("testKey_testPropertyName_ect")).thenReturn("testString1");

这在第二行给出以下异常:

java.util.MissingResourceException: Can't find resource for bundle $java.util.ResourceBundle$$EnhancerByMockitoWithCGLIB$$9e259f03, key testKey_testPropertyName_ect
    at java.util.ResourceBundle.getObject(ResourceBundle.java:374)
    at java.util.ResourceBundle.getString(ResourceBundle.java:334)
    at com.foo.bar.resource.PropertyResourceTest.testGet(PropertyResourceTest.java:104)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
    at java.lang.reflect.Method.invoke(Method.java:597)
    at org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:44)
    at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:15)
    at org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:41)
    at org.junit.internal.runners.statements.InvokeMethod.evaluate(InvokeMethod.java:20)
    at org.junit.internal.runners.statements.RunBefores.evaluate(RunBefores.java:28)
    at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:76)
    at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:50)
    at org.junit.runners.ParentRunner$3.run(ParentRunner.java:193)
    at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:52)
    at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:191)
    at org.junit.runners.ParentRunner.access$000(ParentRunner.java:42)
    at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:184)
    at org.junit.runners.ParentRunner.run(ParentRunner.java:236)
    at org.eclipse.jdt.internal.junit4.runner.JUnit4TestReference.run(JUnit4TestReference.java:50)
    at org.eclipse.jdt.internal.junit.runner.TestExecution.run(TestExecution.java:38)
    at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:467)
    at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:683)
    at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.run(RemoteTestRunner.java:390)
    at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.main(RemoteTestRunner.java:197)

对我来说,这看起来好像schemaBundle根本没有被嘲笑.但是debuger清楚地表明,实例是由mockito包裹的.

我也尝试过

Mockito.doReturn("testString1").when(schemaBundle).getString("testKey_testPropertyName_ect");

但是这会返回相同的异常.

知道什么是错的吗？

我正在尝试解决一个简单的问题,并陷入Java内存模型兔子洞.

什么是最简单和/或最有效(判断调用此处),但无竞争(根据JMM精确定义)编写包含非最终引用字段的Java类的方法,该字段初始化为非空值构造函数,后来从未改变过,这样任何其他线程的后续访问都不能看到非空值？

破碎的起始示例:

public class Holder {

  private Object value;

  public Holder(Object value) {
    if (value == null)
        throw NullPointerException();
    this.value = value;
  }

  public Object getValue() {    // this could return null!
    return this.value;
  }
}

而根据这篇文章,标记该领域volatile甚至不起作用!

public class Holder {

  private volatile Object value;

  public Holder(Object value) {
    if (value == null)
        throw NullPointerException();
    this.value = value;
  }

  public Object getValue() {    // this STILL could return null!!
    return this.value;
  }
} …

我正在为一个有两个方法methodA,methodB的类编写JUnit Test案例.我想在我的测试用例中模拟从methodA调用methodB我在我正在测试的类上使用spy,但仍然执行了methodB.

这是班级

 public class SomeClass
{

     public Object methodA(Object object) 
    {
         object=methodB(object);

        return object;
    }



    public Object methodB(Object object) 
    {
        //do somthing
        return object;
    }
}

这是测试类

  @RunWith( org.powermock.modules.junit4.legacy.PowerMockRunner.class )
    @PrepareForTest(SomeClass.class)
    public class SomeClassTest { 

        private SomeClass var = null; 


        @Before
        public void setUp() {

            var=new SomeClass();

        }

        @After
        public void tearDown()
            {
            var= null;

        }

        @Test
        public void testMethodA_1()
            throws Exception {
            Object object =new Object();
        SomeClass spy_var=PowerMockito.spy(var);
        PowerMockito.when(spy_var.methodB(object)).thenReturn(object);

    Object result = var.methodA(object);        

        assertNotNull(result);

        }

    }

虽然我已经模拟了它,但方法B仍然可以调用它.但是PLease建议我使用适当的方法来模拟同一类的methodA中的methodB调用.

我正在尝试使用Mockito创建一个从Mock对象返回的Mock对象.具体来说,我正在尝试模拟PlayerConnection我的程序可以用来检索IP地址的对象.

你可以PlayerConnection object 在这里找到更多相关信息.它返回一个InetSocketAddress然后InetAddress可以返回一个可以返回String与播放器的IP的a .但我无法走得那么远,因为我的第一次when(class.function()).thenReturn(returnVariable)投掷了NullPointerException.这是我的代码:

/**
 * Creates a partial mock of a connection that can return an ip address.
 * 
 * @param String
 *            The IP to return when the connection gets asked.
 * @return
 */
private PlayerConnection newConnection(String ipString)
{
    PlayerConnection playerConnection = mock(PlayerConnection.class);
    InetSocketAddress inetSocketAddress = mock(InetSocketAddress.class);
    InetAddress inetAddress = mock(InetAddress.class);

    when(playerConnection.getAddress()).thenReturn(inetSocketAddress);
    when(inetSocketAddress.getAddress()).thenReturn(inetAddress);
    when(inetAddress.getHostAddress()).thenReturn(ipString);

    return playerConnection;
}

这是堆栈跟踪,发生在when(playerConnection.getAddress()).thenReturn(inetSocketAddress):

Tests run: 1, …

我正在尝试模拟一个SimpleDateFormat对象，但 Mockito 说我的参数数量错误。代码：

 SimpleDateFormat spyDateFormat = spy(new SimpleDateFormat(DateFormatManager.MAIN_ACTIVITY_TITLE_FORMAT));
 // exception points to below line
 when(spyDateFormat.format(any(Date.class))).thenReturn("foo format");

例外：

org.mockito.exceptions.misusing.InvalidUseOfMatchersException:
Invalid use of argument matchers!
3 matchers expected, 1 recorded:

该方法存在于其父 DateFormat 中：

http://docs.oracle.com/javase/7/docs/api/java/text/DateFormat.html#format(java.util.Date)

尝试切换到 DateFormat，使用spy. 没有运气。