Spring 尽管有 doAnswer 设置，mockito bean 仍然什么都不做

Question

我正在尝试将注入的依赖存入其 void 方法：

@Autowired
private FeedbackService service;
@MockBean
private MailSender sender;

@Test
public void testMonitor() {
    // mocking MailSender#sendMessage
    Mockito.doAnswer(invocation -> {
        log.info("SUBJECT: {}", invocation.getArgument(0, String.class));
        log.info("CONTENT: {}", invocation.getArgument(1, String.class));
        for (String dest : (String[]) invocation.getArgument(2)) {
            log.info("DEST: {}", dest);
        }
        return null;    // Void anyway
    }).when(sender).sendMessage(anyString(), anyString(), any(String[].class)); //FIXME still doNothing
    // invoking the service which calls MailSender#sendMessage
    service.monitor();
}

但是记录和调试显示运行时没有发生拦截。请问有人知道我做错了什么吗？

字符串数组的转换似乎比我想象的要棘手。这用作拦截器：

.sendMessage(anyString(), anyString(), any());

但是第三个参数作为字符串而不是字符串数组到达。注意：第三个参数是可变参数，但#anyVararg 也不起作用。

Answer 1

好吧，我终于想通了，即使编译器允许将可变参数视为数组，调用参数仍会将参数视为单独的实体。

@Test
public void testMonitor() {
    // mocking MailSender#sendMessage
    Mockito.doAnswer(invocation -> {
        log.info("SUBJECT: {}", invocation.getArgument(0, String.class));
        log.info("CONTENT: {}", invocation.getArgument(1, String.class));
        for (int i = 2; i < invocation.getArguments().length; i++) {
            log.info("DEST: {}", (String) invocation.getArgument(i));
        }
        return null;    // Void
    }).when(sender)
      .sendMessage(anyString(), anyString(), (String[]) any());
    // invoking the service, depending on the above stub
    service.monitor();
}

Spring 尽管有 doAnswer 设置，mockito bean 仍然什么都不做

Spring mockito bean still does nothing, despite doAnswer setting

testing

spring

mocking

spring-test

mockito