2.10 在verification中捕获调用参数

单次调用捕获

使用withCapture()捕获最后一次调用的参数。

@Test
public void capturingArgumentsFromSingleInvocation(@Mocked final Collaborator mock)
{
   new Collaborator().doSomething(0.5, new int[2], "test");

   new Verifications() {{
      double d;
      String s;
      mock.doSomething(d = withCapture(), null, s = withCapture());

      assertTrue(d > 0.0);
      assertTrue(s.length() > 1);
   }};
}

多次调用捕获

使用withCapture(List)捕获所有参数。

@Test
public void capturingArgumentsFromMultipleInvocations(@Mocked final Collaborator mock)
{
   mock.doSomething(dataObject1);
   mock.doSomething(dataObject2);

   new Verifications() {{
      List<DataObject> dataObjects = new ArrayList<>();
      mock.doSomething(withCapture(dataObjects));

      assertEquals(2, dataObjects.size());
      DataObject data1 = dataObjects.get(0);
      DataObject data2 = dataObjects.get(1);
      // Perform arbitrary assertions on data1 and data2.
   }};
}

捕获新实例

使用withCapture(new XX())

@Test
public void capturingNewInstances(@Mocked Person mockedPerson) {
   new Person("Paul", 10);
   new Person("Mary", 15);
   new Person("Joe", 20);

   new Verifications() {{
      List<Person> personsInstantiated = withCapture(new Person(anyString, anyInt));
   }};
}