Fixed warning about unit.

In scala 2.11 and later, warning message is output if try to
interpret it automatically with the value of Unit when simply
writing "()".

Therefore, write "(())".

1 files changed, 1 insertions, 1 deletions

diff --git a/src/test/scala/spray/json/BasicFormatsSpec.scala b/src/test/scala/spray/json/BasicFormatsSpec.scala
index 00da813..8417df2 100644
--- a/src/test/scala/spray/json/BasicFormatsSpec.scala
+++ b/src/test/scala/spray/json/BasicFormatsSpec.scala
@@ -127,7 +127,7 @@ class BasicFormatsSpec extends Specification with DefaultJsonProtocol {
       ().toJson mustEqual JsNumber(1)
     }
     "convert a JsNumber to Unit" in {
-      JsNumber(1).convertTo[Unit] mustEqual ()
+      JsNumber(1).convertTo[Unit] mustEqual (())
     }
   }