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-8.js	Wed Dec 31 06:09:35 2014 +0100
     1.3 @@ -0,0 +1,44 @@
     1.4 +// Test that yield* can appear in a loop, and alongside yield.
     1.5 +
     1.6 +function* countdown(n) {
     1.7 +    while (n > 0) {
     1.8 +        yield n;
     1.9 +        yield* countdown(--n);
    1.10 +    }
    1.11 +    return 34;
    1.12 +}
    1.13 +
    1.14 +function collect_results(iter) {
    1.15 +    var ret = [];
    1.16 +    var result;
    1.17 +    do {
    1.18 +        result = iter.next();
    1.19 +        ret.push(result);
    1.20 +    } while (!result.done);
    1.21 +    return ret;
    1.22 +}
    1.23 +
    1.24 +var expected = [
    1.25 +    // yield in countdown(3), n == 3
    1.26 +    {value: 3, done: false},
    1.27 +    // yield in yield* countdown(2), n == 2
    1.28 +    {value: 2, done: false},
    1.29 +    // yield in nested yield* countdown(1), n == 1
    1.30 +    {value: 1, done: false},
    1.31 +    // countdown(0) yields no values
    1.32 +    // second go-through of countdown(2) loop, n == 1
    1.33 +    {value: 1, done: false},
    1.34 +    // second go-through of countdown(3) loop, n == 2
    1.35 +    {value: 2, done: false},
    1.36 +    // yield in yield* countdown(1), n == 1
    1.37 +    {value: 1, done: false},
    1.38 +    // third go-through of countdown(3) loop, n == 1
    1.39 +    {value: 1, done: false},
    1.40 +    // done
    1.41 +    {value: 34, done: true}
    1.42 +];
    1.43 +
    1.44 +assertDeepEq(expected, collect_results(countdown(3)));
    1.45 +
    1.46 +if (typeof reportCompare == "function")
    1.47 +    reportCompare(true, true);