1 files changed, 11 insertions, 0 deletions
diff --git a/src/test/scala/spray/json/ProductFormatsSpec.scala b/src/test/scala/spray/json/ProductFormatsSpec.scala
index e452639..ec9d65f 100644
--- a/src/test/scala/spray/json/ProductFormatsSpec.scala
+++ b/src/test/scala/spray/json/ProductFormatsSpec.scala
@@ -84,4 +84,15 @@ class ProductFormatsSpec extends Specification {
     }
   }
 
+  "A JsonFormat for a generic case class with an explicitly provided type parameter" should {
+    "support the jsonFormat1 syntax" in {
+      case class Box[A](a: A)
+      object BoxProtocol extends DefaultJsonProtocol {
+        implicit val boxFormat = jsonFormat1(Box[Int])
+      }
+      import BoxProtocol._
+      Box(42).toJson === JsObject(Map("a" -> JsNumber(42)))
+    }
+  }
+
 }