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/arguments/args-attributes.js	Wed Dec 31 06:09:35 2014 +0100
     1.3 @@ -0,0 +1,75 @@
     1.4 +function strictArgs() {
     1.5 +    return (function (a, b, c) {'use strict'; return arguments; })(1, 2);
     1.6 +}
     1.7 +
     1.8 +function normalArgs() {
     1.9 +    return (function (a, b, c) { return arguments; })(1, 2);
    1.10 +}
    1.11 +
    1.12 +function checkProperty(options, prop, shouldThrow) {
    1.13 +    var desc, orig;
    1.14 +    var obj = options.strict ? strictArgs() : normalArgs();
    1.15 +    var objType = options.strict ? "strict arguments." : "normal arguments.";
    1.16 +
    1.17 +    function check() {
    1.18 +        orig = Object.getOwnPropertyDescriptor(obj, prop);
    1.19 +
    1.20 +        var threw = false;
    1.21 +        try {
    1.22 +            obj[prop] = obj[prop];
    1.23 +        }
    1.24 +        catch (e) {
    1.25 +            threw = true;
    1.26 +        }
    1.27 +        assertEq(threw, shouldThrow, objType + prop + " threw");
    1.28 +
    1.29 +        if (orig === undefined) {
    1.30 +            // The property wasn't defined, so we can skip it.
    1.31 +            return;
    1.32 +        }
    1.33 +
    1.34 +        desc = Object.getOwnPropertyDescriptor(obj, prop);
    1.35 +        if ("value" in orig) {
    1.36 +            assertEq(desc.value, orig.value, objType + prop + " value");
    1.37 +        } else {
    1.38 +            assertEq(desc.get, orig.get, objType + prop + " get");
    1.39 +            assertEq(desc.set, orig.set, objType + prop + " set");
    1.40 +        }
    1.41 +        assertEq(desc.writable, orig.writable, objType + prop + " writable");
    1.42 +        assertEq(desc.enumerable, orig.enumerable, objType + prop + " enumerable");
    1.43 +        assertEq(desc.configurable, orig.configurable, objType + prop + " configurable");
    1.44 +    }
    1.45 +
    1.46 +    check();
    1.47 +
    1.48 +    if (orig && orig.configurable) {
    1.49 +        if(options.refresh) { obj = options.strict ? strictArgs() : normalArgs(); }
    1.50 +        Object.defineProperty(obj, prop, {writable: false, enumerable: true});
    1.51 +        check();
    1.52 +
    1.53 +        if(options.refresh) { obj = options.strict ? strictArgs() : normalArgs(); }
    1.54 +        Object.defineProperty(obj, prop, {writable: true, enumerable: false});
    1.55 +        check();
    1.56 +
    1.57 +        if(options.refresh) { obj = options.strict ? strictArgs() : normalArgs(); }
    1.58 +        Object.defineProperty(obj, prop, {writable: false, configurable: false});
    1.59 +        check();
    1.60 +    }
    1.61 +}
    1.62 +
    1.63 +checkProperty({strict: true, refresh: true}, 'callee', true);
    1.64 +checkProperty({strict: true, refresh: false}, 'callee', true);
    1.65 +checkProperty({strict: false, refresh: true}, 'callee', false);
    1.66 +checkProperty({strict: false, refresh: false}, 'callee', false);
    1.67 +
    1.68 +checkProperty({strict: true, refresh: true}, 'length', false);
    1.69 +checkProperty({strict: true, refresh: false}, 'length', false);
    1.70 +checkProperty({strict: false, refresh: true}, 'length', false);
    1.71 +checkProperty({strict: false, refresh: false}, 'length', false);
    1.72 +
    1.73 +for (var i = 0; i <= 5; i++) {
    1.74 +    checkProperty({strict: true, refresh: true}, "" + i, false);
    1.75 +    checkProperty({strict: true, refresh: false}, "" + i, false);
    1.76 +    checkProperty({strict: false, refresh: true}, "" + i, false);
    1.77 +    checkProperty({strict: false, refresh: false}, "" + i, false);
    1.78 +}