core-js/tests/unit-pure/es.object.define-setter.js

/* eslint-disable id-match -- unification with global tests */
import { DESCRIPTORS, STRICT } from '../helpers/constants.js';

import __defineGetter__ from 'core-js-pure/es/object/define-getter';
import __defineSetter__ from 'core-js-pure/es/object/define-setter';

if (DESCRIPTORS) {
  QUnit.test('Object#__defineSetter__', assert => {
    assert.isFunction(__defineSetter__);
    let object = {};
    assert.same(__defineSetter__(object, 'key', function () {
      this.foo = 43;
    }), undefined, 'void');
    object.key = 44;
    assert.same(object.foo, 43, 'works');
    object = {};
    __defineSetter__(object, 'key', function () {
      this.foo = 43;
    });
    __defineGetter__(object, 'key', () => 42);
    object.key = 44;
    assert.same(object.key, 42, 'works with getter #1');
    assert.same(object.foo, 43, 'works with getter #2');
    if (STRICT) {
      assert.throws(() => __defineSetter__(null, 1, () => { /* empty */ }), TypeError, 'Throws on null as `this`');
      assert.throws(() => __defineSetter__(undefined, 1, () => { /* empty */ }), TypeError, 'Throws on undefined as `this`');
    }
  });
}