1 files changed, 4 insertions, 0 deletions
diff --git a/test/files/scalacheck/parallel-collections/PairOperators.scala b/test/files/scalacheck/parallel-collections/PairOperators.scala
index 2055c29d38..fe851114be 100644
--- a/test/files/scalacheck/parallel-collections/PairOperators.scala
+++ b/test/files/scalacheck/parallel-collections/PairOperators.scala
@@ -73,6 +73,10 @@ trait PairOperators[K, V] extends Operators[(K, V)] {
 
   def newArray(sz: Int) = new Array[(K, V)](sz)
 
+  def groupByFunctions = (koperators.groupByFunctions zip voperators.groupByFunctions) map {
+    opt => { (p: (K, V)) => (opt._1(p._1), opt._2(p._2)) }
+  }
+
 }