The Tor Browser / file diff

     1.1 --- /dev/null	Thu Jan 01 00:00:00 1970 +0000
     1.2 +++ b/js/src/jit-test/tests/for-of/semantics-10.js	Wed Dec 31 06:09:35 2014 +0100
     1.3 @@ -0,0 +1,31 @@
     1.4 +// The LHS of a for-loop is not bound to a particular scope until after the .next() method returns.
     1.5 +
     1.6 +var obj = {};
     1.7 +
     1.8 +// Test 1
     1.9 +function g() {
    1.10 +    obj.x = 0;
    1.11 +    yield 1;
    1.12 +}
    1.13 +var x = 2, n = 0;
    1.14 +with (obj) {
    1.15 +    for (x of g())  // g().next() inserts a binding for x on obj
    1.16 +        n++;
    1.17 +}
    1.18 +assertEq(x, 2);
    1.19 +assertEq(obj.x, 1);
    1.20 +assertEq(n, 1);
    1.21 +
    1.22 +// Test 2
    1.23 +function h() {
    1.24 +    delete obj.x;
    1.25 +    yield 3;
    1.26 +}
    1.27 +n = 0;
    1.28 +with (obj) {
    1.29 +    for (x of h())  // h().next() deletes the binding for x on obj
    1.30 +        n++;
    1.31 +}
    1.32 +assertEq(x, 3);
    1.33 +assertEq("x" in obj, false);
    1.34 +assertEq(n, 1);