js/src/jit-test/tests/for-of/semantics-07.js

changeset 0
6474c204b198
     1.1 --- /dev/null	Thu Jan 01 00:00:00 1970 +0000
     1.2 +++ b/js/src/jit-test/tests/for-of/semantics-07.js	Wed Dec 31 06:09:35 2014 +0100
     1.3 @@ -0,0 +1,17 @@
     1.4 +// Deleting the .next method of an iterator in the middle of a for-of loop
     1.5 +// causes a TypeError at the next iteration.
     1.6 +
     1.7 +load(libdir + "asserts.js");
     1.8 +load(libdir + "iteration.js");
     1.9 +
    1.10 +var iterProto = Object.getPrototypeOf([][std_iterator]());
    1.11 +var s = '';
    1.12 +assertThrowsInstanceOf(function () {
    1.13 +    for (var v of ['duck', 'duck', 'duck', 'goose', 'FAIL']) {
    1.14 +        s += v;
    1.15 +        if (v === 'goose')
    1.16 +            delete iterProto.next;
    1.17 +        s += '.';
    1.18 +    }
    1.19 +}, TypeError);
    1.20 +assertEq(s, 'duck.duck.duck.goose.');

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