diff options
Diffstat (limited to 'src/test/scala/cc/spray/json/AdditionalFormatsSpec.scala')
-rw-r--r-- | src/test/scala/cc/spray/json/AdditionalFormatsSpec.scala | 41 |
1 files changed, 41 insertions, 0 deletions
diff --git a/src/test/scala/cc/spray/json/AdditionalFormatsSpec.scala b/src/test/scala/cc/spray/json/AdditionalFormatsSpec.scala new file mode 100644 index 0000000..7368128 --- /dev/null +++ b/src/test/scala/cc/spray/json/AdditionalFormatsSpec.scala @@ -0,0 +1,41 @@ +package cc.spray.json + +import org.specs2.mutable._ + +class AdditionalFormatsSpec extends Specification { + + case class Container[A](inner: Option[A]) + + object ReaderProtocol extends DefaultJsonProtocol { + implicit def containerReader[T :JsonFormat] = lift { + new JsonReader[Container[T]] { + def read(value: JsValue) = value match { + case JsObject(JsField("content", obj: JsValue) :: Nil) => Container(Some(jsonReader[T].read(obj))) + case _ => throw new DeserializationException("Unexpected format: " + value.toString) + } + } + } + } + + object WriterProtocol extends DefaultJsonProtocol { + implicit def containerWriter[T :JsonFormat] = lift { + new JsonWriter[Container[T]] { + def write(obj: Container[T]) = JsObject(JsField("content", obj.inner.toJson)) + } + } + } + + "The liftJsonWriter" should { + val obj = Container(Some(Container(Some(List(1, 2, 3))))) + + "properly write a Container[Container[List[Int]]] to JSON" in { + import WriterProtocol._ + obj.toJson.toString mustEqual """{"content":{"content":[1,2,3]}}""" + } + + "properly read a Container[Container[List[Int]]] from JSON" in { + import ReaderProtocol._ + JsonParser("""{"content":{"content":[1,2,3]}}""").fromJson[Container[Container[List[Int]]]] mustEqual obj + } + } +}
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