为什么在Mockito.when创建内部调用了该方法？

huangapple
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英文:

Why method is invoked inside Mockito.when creation?

问题

以下是您要翻译的内容：

方法 DefaultMessageListenerContainer.isRunning() 被调用在 Mockito.doReturn(..).when() 声明中。为什么？

  1. @Test
  2. public void isRunning_validParams_isOk() {
  3.     DefaultMessageListenerContainer mockMessageListenerContainer = Mockito.mock(DefaultMessageListenerContainer.class);
  4.     List<DefaultMessageListenerContainer> internalState = Arrays.asList();
  5.     Whitebox.setInternalState(this.theService, "jmsListeners", internalState);
  6.     try {
  7.         Mockito
  8.             .doReturn(true)
  9.             .doReturn(false)
  10.             .when(mockMessageListenerContainer.isRunning());
  11.     } catch (Exception e) {
  12.         e.printStackTrace();
  13.         Assert.fail("unexpected exception");
  14.     }
  15.     internalState.add(mockMessageListenerContainer);
  16.     boolean result1 = this.theService.isRunning();
  17.     Assert.assertTrue(result1);
  18.     boolean result2 = this.theService.isRunning();
  19.     Assert.assertFalse(result2);
  20. }
英文:

The method DefaultMessageListenerContainer.isRunning() is called in the Mockito.doReturn(..).when() declaration. Why?

  1. @Test
  2. public void isRunning_validParams_isOk() {
  3.     DefaultMessageListenerContainer mockMessageListenerContainer = Mockito.mock(DefaultMessageListenerContainer.class);
  4.     List&lt;DefaultMessageListenerContainer&gt; internalState = Arrays.asList();
  5.     Whitebox.setInternalState(this.theService, &quot;jmsListeners&quot;, internalState);
  6.     try {
  7.         Mockito
  8.             .doReturn(true)
  9.             .doReturn(false)
  10.             .when(mockMessageListenerContainer.isRunning());
  11.     } catch (Exception e) {
  12.         e.printStackTrace();
  13.         Assert.fail(&quot;unexpected exception&quot;);
  14.     }
  15.     internalState.add(mockMessageListenerContainer);
  16.     boolean result1 = this.theService.isRunning();
  17.     Assert.assertTrue(result1);
  18.     boolean result2 = this.theService.isRunning();
  19.     Assert.assertFalse(result2);
  20. }

答案1

得分: 1

  1. 你的代码应该更改为：

.doReturn(false)
.when(mockMessageListenerContainer).isRunning();

  2. ---
  4. 在使用 `doReturn` 时，`when` 方法期望一个模拟对象，更多信息请参考[文档](https://javadoc.io/doc/org.mockito/mockito-core/latest/org/mockito/Mockito.html#doReturn-java.lang.Object-)
英文:

your code should be changed to:

  1. .doReturn(false)
  2. .when(mockMessageListenerContainer).isRunning();

When using doReturn, the when method expects a mock object, more info in the documentation

答案2

得分: 0

问题可能与“isRunning”方法被声明为final有关。

英文:

The problem might be related to the fact that the "isRunning" method is declared as final

huangapple
  • 本文由 发表于 2020年9月23日 16:34:19
  • 转载请务必保留本文链接：https://go.coder-hub.com/64024033.html
  • java
  • junit
  • mockito
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