js/src/tests/non262/Iterator/prototype/reduce/next-throws-iterator-not-closed.js


1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22

// |reftest| skip-if(!this.hasOwnProperty('Iterator')) -- Iterator is not enabled unconditionally

class TestIterator extends Iterator {
  next() {
    throw new Error();
  }

  closed = false;
  return() {
    this.closed = true;
  }
}

const sum = (x, y) => x + y;
const iter = new TestIterator();

assertEq(iter.closed, false);
assertThrowsInstanceOf(() => iter.reduce(sum), Error);
assertEq(iter.closed, false);

if (typeof reportCompare === 'function')
  reportCompare(0, 0);