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
+    }
+  }
+}
+\ No newline at end of file