michael@0: var a = 1.1;
michael@0: function f1() {
michael@0:     return a + 0.2;
michael@0: }
michael@0: function test1() {
michael@0:     for (var i=0; i<100; i++) {
michael@0:         assertEq(f1(), 1.3);
michael@0:     }
michael@0:     a = 20;
michael@0:     assertEq(f1(), 20.2);
michael@0: }
michael@0: test1();
michael@0: 
michael@0: function f2(arr) {
michael@0:     return arr[2] + 0.2;
michael@0: }
michael@0: function test2() {
michael@0:     var a = [1.1, 2.2, 3.3, 4.4];
michael@0:     for (var i=0; i<100; i++) {
michael@0:         assertEq(f2(a), 3.5);
michael@0:     }
michael@0:     a[2] = 123;
michael@0:     assertEq(f2(a), 123.2);
michael@0: }
michael@0: test2();
michael@0: 
michael@0: function f3(arr, idx) {
michael@0:     return arr[idx] + 0.2;
michael@0: }
michael@0: function test3() {
michael@0:     var a = [1.1, 2.2, 3.3, 4.4];
michael@0:     for (var i=0; i<100; i++) {
michael@0:         assertEq(f3(a, 2), 3.5);
michael@0:     }
michael@0:     a[2] = 123;
michael@0:     assertEq(f3(a, 2), 123.2);
michael@0: }
michael@0: test3();