randomwalk test fix

Author: kushti

src/main/scala/scorex/crypto/authds/avltree/batch/BatchAVLProver.scala

@@ -355,7 +355,7 @@ class BatchAVLProver[D <: Digest, HF <: CryptographicHash[D]](val keyLength: Int
   /**
     *
     * @param rand - source of randomness
-    * @return Random leaf from the tree, that is not positive or negative infinity
+    * @return Random leaf from the tree that is not positive or negative infinity
     */
   def randomWalk(rand: Random = new Random): Option[(ADKey, ADValue)] = {
     def internalNodeFn(r: InternalProverNode[D], dummy: Unit.type) =

src/test/scala/scorex/crypto/authds/avltree/batch/AVLBatchSpecification.scala

@@ -172,8 +172,8 @@ class AVLBatchSpecification extends PropSpec with GeneratorDrivenPropertyChecks
     forAll { seed: Long =>
       val e1 = prover.randomWalk(new scala.util.Random(seed))
       val e2 = prover.randomWalk(new scala.util.Random(seed))
-      e1.get._1 shouldEqual e2.get._1
-      e1.get._2 shouldEqual e2.get._2
+      e1.map(_._1) shouldEqual e2.map(_._1)
+      e1.map(_._2) shouldEqual e2.map(_._2)
     }
   }