3 files changed, 17 insertions, 7 deletions
diff --git a/src/test/scala/CoproductTypeFormats.scala b/src/test/scala/CoproductTypeFormats.scala
index cdf0201..e20871c 100644
--- a/src/test/scala/CoproductTypeFormats.scala
+++ b/src/test/scala/CoproductTypeFormats.scala
@@ -28,12 +28,12 @@ class CoproductTypeFormats
 
   "Nested parameter case class child" should behave like checkCoherence[Expr](
     Plus(Value(42), One),
-    """{"type":"Plus","lhs":{"type":"Value","x":42},"rhs":"One"}"""
+    """{"type":"Plus","lhs":{"type":"Value","x":42},"rhs":{"type":"One"}}"""
   )
 
   "Case object child" should behave like checkCoherence[Expr](
     One,
-    """"One""""
+    """{"type": "One"}"""
   )
 
   @gadt("kind")
@@ -45,13 +45,23 @@ class CoproductTypeFormats
     """{"kind":"If","type":"class"}"""
   )
 
+  @gadt("""_`crazy type!`"""")
+  sealed abstract trait Crazy
+  case class CrazyType() extends Crazy
+
+  "GADT with special characters in type field" should behave like checkCoherence[
+    Crazy](
+    CrazyType(),
+    """{"_`crazy type!`\"": "CrazyType"}"""
+  )
+
   sealed trait Enum
   case object A extends Enum
   case object B extends Enum
 
   "Enum" should behave like checkCoherence[List[Enum]](
     A :: B :: Nil,
-    """["A", "B"]"""
+    """[{"type":"A"}, {"type":"B"}]"""
   )
 
   "Serializing as sealed trait an deserializing as child" should "work" in {
diff --git a/src/test/scala/FormatTests.scala b/src/test/scala/FormatTests.scala
index e29e49f..68a4765 100644
--- a/src/test/scala/FormatTests.scala
+++ b/src/test/scala/FormatTests.scala
@@ -5,7 +5,7 @@ import org.scalatest._
 
 trait FormatTests { self: FlatSpec =>
 
-  def checkCoherence[A: JsonFormat](a: A, expectedJson: String) = {
+  def checkCoherence[A: RootJsonFormat](a: A, expectedJson: String) = {
     it should "serialize to the expected JSON value" in {
       val expected: JsValue = expectedJson.parseJson
       assert(a.toJson == expected)
diff --git a/src/test/scala/ProductTypeFormats.scala b/src/test/scala/ProductTypeFormats.scala
index 9755198..48f1bf1 100644
--- a/src/test/scala/ProductTypeFormats.scala
+++ b/src/test/scala/ProductTypeFormats.scala
@@ -31,16 +31,16 @@ class ProductTypeFormats
 
   "Case object" should behave like checkCoherence(
     D,
-    """"D""""
+    "{}"
   )
 
   "Case object as parameter" should behave like checkCoherence(
     E(D),
-    """{"d":"D"}"""
+    """{"d":{}}"""
   )
 
   // custom format for F, that inverts the value of parameter x
-  implicit val fFormat: JsonFormat[F] = new JsonFormat[F] {
+  implicit val fFormat: RootJsonFormat[F] = new RootJsonFormat[F] {
     override def write(f: F): JsValue = JsObject("x" -> JsNumber(-f.x))
     override def read(js: JsValue): F =
       F(-js.asJsObject.fields("x").convertTo[Int])