我想测试一个返回a的方法Future
。我的尝试如下:
import org.specs2.mutable.Specification
import scala.concurrent.ExecutionContext.Implicits.global
import scala.util.{Failure, Success}
class AsyncWebClientSpec extends Specification{
"WebClient when downloading images" should {
"for a valid link return non-zero content " in {
val testImage = AsyncWebClient.get("https://www.google.cz/images/srpr/logo11ww.png")
testImage.onComplete { res =>
res match {
case Success(image) => image must not have length(0)
case _ =>
}
AsyncWebClient.shutDown
}
}
}
}
除了我无法使这段代码工作这一事实之外,我想可能有更好的方法来测试期货Future
面向匹配器。
如何在specs2中正确地做到这一点?
您可以使用Matcher.await
方法来变换一个Matcher[T]
into a Matcher[Future[T]]
:
val testImage: Future[String] =
AsyncWebClient.get("https://www.google.cz/images/srpr/logo11ww.png")
// you must specify size[String] here to help type inference
testImage must not have size[String](0).await
// you can also specify a number of retries and duration between retries
testImage must not have size[String](0).await(retries = 2, timeout = 2.seconds)
// you might also want to check exceptions in case of a failure
testImage must throwAn[Exception].await
本文内容由网友自发贡献,版权归原作者所有,本站不承担相应法律责任。如您发现有涉嫌抄袭侵权的内容,请联系:hwhale#tublm.com(使用前将#替换为@)