The Tor Browser / file diff

     1.1 --- /dev/null	Thu Jan 01 00:00:00 1970 +0000
     1.2 +++ b/js/src/tests/ecma_6/Generators/delegating-yield-9.js	Wed Dec 31 06:09:35 2014 +0100
     1.3 @@ -0,0 +1,37 @@
     1.4 +// Test that yield* can appear in a loop, and inside yield.
     1.5 +
     1.6 +function* countdown(n) {
     1.7 +    while (n > 0) {
     1.8 +        yield (yield* countdown(--n));
     1.9 +    }
    1.10 +    return 34;
    1.11 +}
    1.12 +
    1.13 +function collect_results(iter) {
    1.14 +    var ret = [];
    1.15 +    var result;
    1.16 +    do {
    1.17 +        result = iter.next();
    1.18 +        ret.push(result);
    1.19 +    } while (!result.done);
    1.20 +    return ret;
    1.21 +}
    1.22 +
    1.23 +var expected = [
    1.24 +    // Only 34 yielded from the "yield" and the last return make it out.
    1.25 +    // Three yields in countdown(3), two in countdown(2), and one in
    1.26 +    // countdown(1) (called twice).
    1.27 +    {value: 34, done: false},
    1.28 +    {value: 34, done: false},
    1.29 +    {value: 34, done: false},
    1.30 +    {value: 34, done: false},
    1.31 +    {value: 34, done: false},
    1.32 +    {value: 34, done: false},
    1.33 +    {value: 34, done: false},
    1.34 +    {value: 34, done: true}, // final
    1.35 +];
    1.36 +
    1.37 +assertDeepEq(collect_results(countdown(3)), expected);
    1.38 +
    1.39 +if (typeof reportCompare == "function")
    1.40 +    reportCompare(true, true);