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/collections/for-in.js	Wed Dec 31 06:09:35 2014 +0100
     1.3 @@ -0,0 +1,25 @@
     1.4 +// for-in loops on Maps and Sets enumerate properties.
     1.5 +
     1.6 +var test = function test(obj) {
     1.7 +    assertEq(Object.keys(obj).length, 0);
     1.8 +
     1.9 +    var i = 0, v;
    1.10 +    for (v in obj)
    1.11 +        i++;
    1.12 +    assertEq(i, 0);
    1.13 +
    1.14 +    obj.ownProp = 1;
    1.15 +    assertEq(Object.keys(obj).join(), "ownProp");
    1.16 +
    1.17 +    for (v in obj)
    1.18 +        i++;
    1.19 +    assertEq(i, 1);
    1.20 +    assertEq(v, "ownProp");
    1.21 +
    1.22 +    delete obj.ownProp;
    1.23 +};
    1.24 +
    1.25 +test(Map.prototype);
    1.26 +test(new Map);
    1.27 +test(Set.prototype);
    1.28 +test(new Set);