test262/test/language/expressions/assignment/dstr/array-elision-iter-nrml-close-skip.js

// This file was procedurally generated from the following sources:
// - src/dstr-assignment/array-elision-iter-nrml-close-skip.case
// - src/dstr-assignment/default/assignment-expr.template
/*---
description: IteratorClose is not called when iteration has exhausted the iterator (AssignmentExpression)
esid: sec-variable-statement-runtime-semantics-evaluation
features: [Symbol.iterator, destructuring-binding]
flags: [generated]
info: |
    VariableDeclaration : BindingPattern Initializer

    1. Let rhs be the result of evaluating Initializer.
    2. Let rval be GetValue(rhs).
    3. ReturnIfAbrupt(rval).
    4. Return the result of performing BindingInitialization for
       BindingPattern passing rval and undefined as arguments.

    ArrayAssignmentPattern : [ Elision ]

    1. Let iterator be GetIterator(value).
    [...]
    5. If iteratorRecord.[[done]] is false, return IteratorClose(iterator,
       result).
    [...]

---*/
var nextCount = 0;
var returnCount = 0;
var iterable = {};
var iterator = {
  next: function() {
    nextCount += 1;
    return { done: true };
  },
  return: function() {
    returnCount += 1;
    return {};
  }
};
iterable[Symbol.iterator] = function() {
  return iterator;
};

var result;
var vals = iterable;

result = [ , ] = vals;

assert.sameValue(nextCount, 1);
assert.sameValue(returnCount, 0);

assert.sameValue(result, vals);