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 load(libdir + "parallelarray-helpers.js");

 // Tests that reduce saves its intermediate state correctly by

 // inducing a bailout in the middle of the reduction.  This test may

 // fail to test what it is intended to test if the wrong number of

 // worker threads etc are present.  It reproduced an existing bug when

 // used with 8 worker threads.

 function testReduce() {

   var aCounter = 0;

   function sum(a, b) {

     var r = a + b;

     if (r == 234) // occurs once per slice

       aCounter++;

     return r;

   }

   // We use a big array, to make sure that the test runs with 64 slices.

   var array = build(8 * 4096, function() { return 1; });

   var seqResult = array.reduce(sum);

   var seqCounter = aCounter;

   aCounter = 0;

   var parResult = array.reducePar(sum);

   var parCounter = aCounter;

   assertEq(true, parCounter >= seqCounter);

   assertStructuralEq(parResult, seqResult);

 }

 if (getBuildConfiguration().parallelJS)

   testReduce();