我正在尝试对在 Consumer 功能接口(interface)中作为回调运行的代码进行单元测试。
@Component
class SomeClass {
@Autowired
private SomeInteface toBeMockedDependency;
public method() {
toBeMockedDependency.doSomething(message -> {
// Logic under test goes here
// (implements java.util.function.Consumer interface)
...
});
}
}
@RunWith(MockitoJUnitRunner.class)
public class SomeClassTest {
@InjectMocks
private SomeClass someClass;
@Mock
private SomeInteface toBeMockedDependency;
@Test
public void testMethod() {
...
someClass.method();
...
}
}
本质上,我想通过“toBeMockedDependency”向测试代码提供一些经过测试的“消息”。
如何模拟“toBeMockedDependency”以提供预定义的消息?
这是正确的方法吗?
最佳答案
不要试图制造 toBeMockedDependency
自动调用您的功能接口(interface)。相反,使用 @Captor
至 capture匿名函数式接口(interface),然后使用您的测试手动调用它。
@RunWith(MockitoJUnitRunner.class)
public class SomeClassTest {
@InjectMocks
private SomeClass someClass;
@Mock
private SomeInteface toBeMockedDependency;
@Captor
private ArgumentCaptor<Consumer<Message>> messageConsumerCaptor;
@Test
public void testMethod() {
someClass.method();
verify(toBeMockedDependency).doSomething(messageConsumerCaptor.capture());
Consumer<Message> messageConsumer = messageConsumerCaptor.getValue();
// Now you have your message consumer, so you can test it all you want.
messageConsumer.accept(new Message(...));
assertEquals(...);
}
}
关于unit-testing - 基于Consumer功能接口(interface)的单元测试回调,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/39017627/