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/Map-set-undefined.js	Wed Dec 31 06:09:35 2014 +0100
     1.3 @@ -0,0 +1,15 @@
     1.4 +// Setting a Map key to undefined, or a missing argument, isn't the same as deleting it.
     1.5 +
     1.6 +var m = new Map;
     1.7 +m.set(42, undefined);
     1.8 +assertEq(m.has(42), true);
     1.9 +assertEq(m.get(42), undefined);
    1.10 +
    1.11 +m.set(42, "wrong");
    1.12 +m.set(42);
    1.13 +assertEq(m.has(42), true);
    1.14 +assertEq(m.get(42), undefined);
    1.15 +
    1.16 +m.set();
    1.17 +assertEq(m.has(undefined), true);
    1.18 +assertEq(m.get(undefined), undefined);