js/src/tests/ecma_6/Comprehensions/scope.js

Wed, 31 Dec 2014 06:09:35 +0100

author
Michael Schloh von Bennewitz <michael@schloh.com>
date
Wed, 31 Dec 2014 06:09:35 +0100
changeset 0
6474c204b198
permissions
-rw-r--r--

Cloned upstream origin tor-browser at tor-browser-31.3.0esr-4.5-1-build1
revision ID fc1c9ff7c1b2defdbc039f12214767608f46423f for hacking purpose.

michael@0 1 // The identifier of a ComprehensionFor is only bound within its tail.
michael@0 2
michael@0 3 function t() {
michael@0 4 var x = [0, 1, 2];
michael@0 5 return [for (x of x) x*2]
michael@0 6 }
michael@0 7 assertDeepEq(t(), [0, 2, 4]);
michael@0 8
michael@0 9 // Each iteration should create a fresh binding. Unfortunately this is
michael@0 10 // not currently the case, but bug 449811 will fix this.
michael@0 11 function t2() {
michael@0 12 var x = [0, 1, 2];
michael@0 13 return [for (x of x) ()=>x]
michael@0 14 }
michael@0 15 // FIXME: Should be [0, 1, 2].
michael@0 16 assertDeepEq([for (x of t2()) x()], [2, 2, 2]);
michael@0 17
michael@0 18 reportCompare(null, null, "test");

mercurial