add PackageTest for routes

src/test/scala/com/fluency03/blockchain/api/routes/PackageTest.scala

@@ -0,0 +1,33 @@
+package com.fluency03.blockchain.api.routes
+
+import akka.http.scaladsl.model.StatusCodes
+import com.fluency03.blockchain.api.{FailureMsg, SuccessMsg}
+import org.scalatest.{FlatSpec, Matchers}
+
+class PackageTest extends FlatSpec with Matchers {
+
+  "failsafeMsg" should "return corresponding message based on success/failure of the function." in {
+    failsafeMsg({
+      throw new Exception("some error")
+      "some string"
+    }) shouldEqual FailureMsg("some error")
+
+    failsafeMsg({
+      "some string"
+    }) shouldEqual SuccessMsg("some string")
+
+  }
+
+  "failsafeResp" should "return corresponding message based on success/failure of the function." in {
+    failsafeResp({
+      throw new Exception("some error")
+      "some string"
+    }) shouldEqual (StatusCodes.InternalServerError, FailureMsg("some error"))
+
+    failsafeResp({
+      "some string"
+    }) shouldEqual (StatusCodes.OK, SuccessMsg("some string"))
+
+  }
+
+}