简化示例

Question

我正在为我的程序创建一个单元测试。我有一个void方法，它接受五个参数，然后将这些参数转换为一个闭包，并将其传递给另一个服务，转换成电子邮件并发送。我唯一关心的是这封电子邮件的正文，它存储在传递给此函数的一个参数中。是否可以在不改变程序设计的情况下验证此参数？

我考虑过使用Spock样式的模拟，但是我无法确定我是否可以在经过规范测试的类中实际模拟/存根方法，或者我是否只能模拟出依赖项。

简化示例

Class myTestService
{
    def outsideService
    private void sendEmail (User source, String subj, String body, List to, List attachments){
       outsideService.sendMail{
           //blah blah
           subject subj
           html wrapWithDefault(body) //wrapWithDefault is a big styling document also in this function
           //blah blah
           }
       }

int send(GrailsParameterMap params, HttpServletRequest request) {
      //Parse out attachments from request and body/subject/addressee from params
      //little bit of business logic to ensure that we can send emails in our system
      sendEmail(source,
                subject,
                "$body <br /><br /> important extra information", 
                sendTo,
                attachments)

      //Send another email to the source as a receipt
      sendEmail(source,
                subject,
                "$body extra junk $receiptBody",
                source,
                attachments)
   }

}

我需要查看收据是否正确添加了receiptBody。鉴于我正在向outsideService发送一个闭包，很难从中删除变量，所以我有点亏。

编辑：为了回应下面的答案，我在我的测试中插入了spock样式模拟，但我认为我没有正确的语义，因为值存储为null。 void“#value contains＃params.body”（） { 给出：

   //def params, request, filling in all necessary values

   def value
   def mailServiceMock = Mock(MailService)
   mailServiceMock.sendMail(*_) >> {closure ->
        closure.delegate = new Expando(
            multipart:{},
            from: {},
            subject: {},
            html: {value = it}
            bcc: {}
            )
        closure()
   }
   //inform service of mock
   service.mailService = mailServiceMock

   when:
       service.send(params, request)
   then:
   println("value = $value")
   1 * mailServiceMock.sendMail(*_) // this should fail, since this should be called twice, but one thing at a time.
   value.contains(params.body)

   }

值显示为null。有什么想法吗？

Answer 1

您可以模拟您的服务。

这是一个非常简单的脚本，它扼杀outsideService以将html方法中收到的值存储在脚本var中。你应该去Spock / JUnit / YouNameIt来使这个整洁。

class MyTestService
{
    def outsideService
    private void sendEmail (source, String subj, String body, List to, List attachments){
       outsideService.sendMail{
           subject subj
           html "<body>$body</body>"
       }
   }
}


myTest = new MyTestService()

def body
myTest.outsideService = [sendMail: { closure ->
  closure.delegate = new Expando(
    subject: { }, //don't care
    html: { body = it }
  )
  closure()
}]

myTest.sendEmail(null, 'my subject', 'my email body', null, null) 
assert '<body>my email body</body>' == body

单元测试void方法：验证参数

简化示例

1 个答案: