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seratch/AppInjector.scala

Forked from yamashiro/AppInjector.scala
Created May 10, 2012 06:22
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ScalaでDIというかServiceLocator的な名状しがたい何か
Raw
AppInjector.scala
trait ApiInjector {
//var twitter : TwitterApi = new TwitterApiImpl;
val twitter : TwitterApi = new TwitterApiImpl;
//他にもいろいろなサービス
}
Raw
TwitterApi.scala
trait TwitterApi {
def publicTimeLines : List[String]
//他にも沢山の api
}
Raw
TwitterApiImpl.scala
class TwitterApiImpl extends TwitterApi {
def publicTimeLines : List[String] = {
//Twitter API つかってごにょごにょするはず
List("本当は", "リアルに", "public", "timeline", "取得する")
}
}
Raw
TwitterClient.scala
class TwitterClient extends ApiInjector {
def indexedPublicTimeLine : List[String] = {
twitter.publicTimeLines.zipWithIndex
.map{ case (s, i) => (i + 1) + " " + s}
}
}
Raw
TwitterClientTest.scala
import org.specs2.mutable._
trait TestApiInjector extends ApiInjector {
//twitter = new TwitterApi {
override val twitter = new TwitterApi {
def publicTimeLines = {
List ("dummy", "public", "timeline")
}
}
}
class TwitterClientTest extends Specification {
"Twitter Api Client" should {
val client = new TwitterClient with TestApiInjector
val indexedPublicTimeLine = client.indexedPublicTimeLine
"indexedPublicTimeLine return size " in {
indexedPublicTimeLine.size must_== 3
}
"indexedPublicTimeLine return indexedLine" in {
indexedPublicTimeLine(0) must_== "1 dummy"
}
}
}
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