michael@0: var Test = function (foo) {
michael@0:     var a = [];
michael@0: 
michael@0:     this.fillArray = function() {
michael@0:         a = [];
michael@0:         for (var i = 0; i < 10; i++)
michael@0:             a.push(0);
michael@0:         assertEq(a.length, 10);
michael@0:     }
michael@0: 
michael@0:     foo.go(this);
michael@0: };
michael@0: 
michael@0: // Import assertEq now to prevent global object shape from changing.
michael@0: assertEq(true, true);
michael@0: 
michael@0: (new Test({ go: function(p) {
michael@0:     p.fill = function() {
michael@0:         p.fillArray();
michael@0:     }
michael@0: }})).fill();
michael@0: 
michael@0: new Test({ go: function(p) {
michael@0:     for (var k = 0; k < 10; k++)
michael@0:         p.fillArray();
michael@0: }});