michael@0: load(libdir + "parallelarray-helpers.js");
michael@0: 
michael@0: // Tests that reduce saves its intermediate state correctly by
michael@0: // inducing a bailout in the middle of the reduction.  This test may
michael@0: // fail to test what it is intended to test if the wrong number of
michael@0: // worker threads etc are present.  It reproduced an existing bug when
michael@0: // used with 8 worker threads.
michael@0: 
michael@0: function testReduce() {
michael@0:   var aCounter = 0;
michael@0:   function sum(a, b) {
michael@0:     var r = a + b;
michael@0:     if (r == 234) // occurs once per slice
michael@0:       aCounter++;
michael@0:     return r;
michael@0:   }
michael@0: 
michael@0:   // We use a big array, to make sure that the test runs with 64 slices.
michael@0:   var array = build(8 * 4096, function() { return 1; });
michael@0:   var seqResult = array.reduce(sum);
michael@0:   var seqCounter = aCounter;
michael@0: 
michael@0:   aCounter = 0;
michael@0:   var parResult = array.reducePar(sum);
michael@0:   var parCounter = aCounter;
michael@0: 
michael@0:   assertEq(true, parCounter >= seqCounter);
michael@0:   assertStructuralEq(parResult, seqResult);
michael@0: }
michael@0: 
michael@0: if (getBuildConfiguration().parallelJS)
michael@0:   testReduce();