lazy-methods-throw-eagerly-on-non-callable.js

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// |reftest| skip-if(!this.hasOwnProperty('Iterator'))

//

//

/*---

esid: pending

description: Lazy %Iterator.prototype% methods throw eagerly when passed non-callables.

info: >

  Iterator Helpers proposal 2.1.5

features: [iterator-helpers]

---*/

const methods = [

  (iter, fn) => iter.map(fn),

  (iter, fn) => iter.filter(fn),

  (iter, fn) => iter.flatMap(fn),

];

for (const method of methods) {

  assertThrowsInstanceOf(() => method(Iterator.prototype, 0), TypeError);

  assertThrowsInstanceOf(() => method(Iterator.prototype, false), TypeError);

  assertThrowsInstanceOf(() => method(Iterator.prototype, undefined), TypeError);

  assertThrowsInstanceOf(() => method(Iterator.prototype, null), TypeError);

  assertThrowsInstanceOf(() => method(Iterator.prototype, ''), TypeError);

  assertThrowsInstanceOf(() => method(Iterator.prototype, Symbol('')), TypeError);

  assertThrowsInstanceOf(() => method(Iterator.prototype, {}), TypeError);

  assertThrowsInstanceOf(() => method([].values(), 0), TypeError);

  assertThrowsInstanceOf(() => method([].values(), false), TypeError);

  assertThrowsInstanceOf(() => method([].values(), undefined), TypeError);

  assertThrowsInstanceOf(() => method([].values(), null), TypeError);

  assertThrowsInstanceOf(() => method([].values(), ''), TypeError);

  assertThrowsInstanceOf(() => method([].values(), Symbol('')), TypeError);

  assertThrowsInstanceOf(() => method([].values(), {}), TypeError);

if (typeof reportCompare == 'function')

  reportCompare(0, 0);