JSON 解析を検証するために、仕様テストを作成しました。テストは完璧に機能しますが、かなりうるさく感じます。
OptionとEitherをアンボックスする仕様に既存のコードがあるのだろうか?
"twitter json to Scala class mapper" should {
"parsing a tweet" in {
TwitterJsonMapper.tweetP(tweetS) match {
case Right(t: Tweet) => {
implicit def unOption[T](t: Option[T]): T = t.get
implicit def unEither[T](t: Either[T,Throwable]): T = t match {case Left(left) => left ;case Right(t) => throw t}
"test id" in {
true must_== (t.id.get == 228106060337135617l)
}
"test id_str" in {
true must_== (t.id_str.get == "228106060337135617")
}
"test time" in {
true must_== (t.created_at.getHours == 13 )
}
}
case Left((pe: JsonParseException, reason: String)) => fail(reason + "\n" + pe)
}
}
}
//The Tweet is produced from JSON using Fasterxml's Jackson-Scala library.
//I want to use Option or Either monads over all child attributes - for the usual reasons.
case class Tweet(
@BeanProperty contributors: Option[String],
@BeanProperty coordinates: Option[String],
@BeanProperty @JsonDeserialize (
using = classOf[TwitterDateDeserializer]
) created_at: Either[Date,Throwable],
@BeanProperty favorited: Boolean = false,
//elided etc etc
@BeanProperty id_str: Option[String]
}