When iterating a data file, loop back to the beginning rather than repeat the last element

Author: ThePieBandit

lib/runner/extensions/waterfall.command.js

@@ -51,13 +51,8 @@ extractSNR = function (executions, previous) {
  * @return {Any} - The data for the iteration
  */
 getIterationData = function (data, iteration) {
-    // if iteration has a corresponding data element use that
-    if (iteration < data.length) {
-        return data[iteration];
-    }
-
-    // otherwise use the last data element
-    return data[data.length - 1];
+    // if iteration has a corresponding data element use that, otherwise, start from the beginning again.
+    return data[iteration % data.length];
 };
 
 /**