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-iterator-remove-1.js	Wed Dec 31 06:09:35 2014 +0100
     1.3 @@ -0,0 +1,40 @@
     1.4 +// A map iterator can cope with removing the current entry.
     1.5 +
     1.6 +function test(pairs) {
     1.7 +    print(uneval(pairs));
     1.8 +    var map = Map(pairs);
     1.9 +    
    1.10 +    var all_keys = '';
    1.11 +    var false_keys = '';
    1.12 +    for (let [k, v] of map) {
    1.13 +        all_keys += k;
    1.14 +        if (!v)
    1.15 +            false_keys += k;
    1.16 +    }
    1.17 +
    1.18 +    var log = '';
    1.19 +    for (let [k, remove] of map) {
    1.20 +        log += k;
    1.21 +        if (remove)
    1.22 +            map.delete(k);
    1.23 +    }
    1.24 +    assertEq(log, all_keys);
    1.25 +
    1.26 +    var remaining_keys = [k for ([k] of map)].join('');
    1.27 +    assertEq(remaining_keys, false_keys);
    1.28 +}
    1.29 +
    1.30 +// removing the only entry
    1.31 +test([['a', true]]);
    1.32 +
    1.33 +// removing the first entry
    1.34 +test([['a', true], ['b', false], ['c', false]]);
    1.35 +
    1.36 +// removing a middle entry
    1.37 +test([['a', false], ['b', true], ['c', false]]);
    1.38 +
    1.39 +// removing the last entry
    1.40 +test([['a', false], ['b', false], ['c', true]]);
    1.41 +
    1.42 +// removing all entries
    1.43 +test([['a', true], ['b', true], ['c', true]]);