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      1 // Copyright 2015 the V8 project authors. All rights reserved.
      2 // Use of this source code is governed by a BSD-style license that can be
      3 // found in the LICENSE file.
      4 
      5 assertThrows(function() {
      6   Object.getOwnPropertyDescriptor(null, 'x');
      7 }, TypeError);
      8 
      9 
     10 assertThrows(function() {
     11   Object.getOwnPropertyDescriptor(undefined, 'x');
     12 }, TypeError);
     13 
     14 
     15 assertEquals({
     16   configurable: false,
     17   enumerable: false,
     18   value: 3,
     19   writable: false,
     20 }, Object.getOwnPropertyDescriptor('abc', 'length'));
     21 
     22 
     23 assertEquals({
     24   configurable: false,
     25   enumerable: true,
     26   value: 'a',
     27   writable: false,
     28 }, Object.getOwnPropertyDescriptor('abc', 0));
     29 
     30 
     31 assertSame(undefined, Object.getOwnPropertyDescriptor(42, 'x'));
     32 assertSame(undefined, Object.getOwnPropertyDescriptor(true, 'x'));
     33 assertSame(undefined, Object.getOwnPropertyDescriptor(false, 'x'));
     34 assertSame(undefined, Object.getOwnPropertyDescriptor(Symbol(), 'x'));
     35