Improve test coverage

Change-Id: Ib3c220638790ea02ad7285916fc98320ecada31b
diff --git a/build.gradle b/build.gradle
index 88287a6..f953fdb 100644
--- a/build.gradle
+++ b/build.gradle
@@ -88,7 +88,7 @@
     showStandardStreams = true
     exceptionFormat = "full"
   }
-  outputs.upToDateWhen { false }
+//  outputs.upToDateWhen { false }
 }
 
 tasks.withType(Checkstyle) {