michael@0: /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
michael@0: /* This Source Code Form is subject to the terms of the Mozilla Public
michael@0:  * License, v. 2.0. If a copy of the MPL was not distributed with this
michael@0:  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
michael@0: 
michael@0: //-----------------------------------------------------------------------------
michael@0: var BUGNUMBER = 394709;
michael@0: var summary = 'Do not leak with object.watch and closure';
michael@0: var actual = 'No Leak';
michael@0: var expect = 'No Leak';
michael@0: 
michael@0: if (typeof countHeap == 'undefined')
michael@0: {
michael@0:   countHeap = function () { 
michael@0:     print('This test requires countHeap which is not supported'); 
michael@0:     return 0;
michael@0:   };
michael@0: }
michael@0: 
michael@0: //-----------------------------------------------------------------------------
michael@0: test();
michael@0: //-----------------------------------------------------------------------------
michael@0: 
michael@0: function test()
michael@0: {
michael@0:   enterFunc ('test');
michael@0:   printBugNumber(BUGNUMBER);
michael@0:   printStatus (summary);
michael@0: 
michael@0:   // Ensure that we flush all values so that gc() collects all objects that
michael@0:   // the user cannot reach from JS.
michael@0:   eval();
michael@0: 
michael@0:   runtest();
michael@0:   gc();
michael@0:   var count1 = countHeap();
michael@0:   runtest();
michael@0:   gc();
michael@0:   var count2 = countHeap();
michael@0:   runtest();
michael@0:   gc();
michael@0:   var count3 = countHeap();
michael@0:   /* Try to be tolerant of conservative GC noise: we want a steady leak. */
michael@0:   if (count1 < count2 && count2 < count3)
michael@0:     throw "A leaky watch point is detected";
michael@0: 
michael@0:   function runtest () {
michael@0:     var obj = { b: 0 };
michael@0:     obj.watch('b', watcher);
michael@0: 
michael@0:     function watcher(id, old, value) {
michael@0:       ++obj.n;
michael@0:       return value;
michael@0:     }
michael@0:   }
michael@0: 
michael@0:   reportCompare(expect, actual, summary);
michael@0: 
michael@0:   exitFunc ('test');
michael@0: }