michael@0: //length, string, object
michael@0: 
michael@0: var expected = "3,6,4,3,6,4,3,6,4,3,6,4,";
michael@0: var actual = '';
michael@0: 
michael@0: function f() {
michael@0:     var ss = [new String("abc"), new String("foobar"), new String("quux")];
michael@0: 
michael@0:     for (var i = 0; i < 12; ++i) {
michael@0:         actual += ss[i%3].length + ',';
michael@0:     }
michael@0: }
michael@0: 
michael@0: f();
michael@0: 
michael@0: assertEq(actual, expected);
michael@0: 
michael@0: 
michael@0: function g(s) {
michael@0:     return new String(s).length;
michael@0: }
michael@0: 
michael@0: assertEq(g("x"), 1); // Warm-up
michael@0: assertEq(g("x"), 1); // Create IC
michael@0: assertEq(g("x"), 1); // Test IC
michael@0: 
michael@0: function h(s) {
michael@0:     var x = new String(s);
michael@0:     for (var i = 0; i < 100; i++)
michael@0:         x[i] = i;
michael@0:     return x.length;
michael@0: }
michael@0: 
michael@0: assertEq(h("x"), 1);
michael@0: assertEq(h("x"), 1);
michael@0: assertEq(h("x"), 1);