text: // Copyright (C) 2015 the V8 project authors. All rights reserved.
  // This code is governed by the BSD license found in the LICENSE file.
  /*---
  es6id: 9.5.5
  description: >
      Throws a TypeError exception if trap result is neither Object nor Undefined
  info: |
      [[GetOwnProperty]] (P)
  
      ...
      11. If Type(trapResultObj) is neither Object nor Undefined, throw a
      TypeError exception.
      ...
  features: [Proxy, Symbol]
  ---*/
  
  var target = {
    number: 1,
    symbol: Symbol(),
    string: '',
    boolean: true,
    fn: function() {}
  };
  var p = new Proxy(target, {
    getOwnPropertyDescriptor: function(t, prop) {
      return t[prop];
    }
  });
  
  assert.throws(TypeError, function() {
    Object.getOwnPropertyDescriptor(p, "number");
  });
  
  assert.throws(TypeError, function() {
    Object.getOwnPropertyDescriptor(p, "string");
  });
  
  assert.throws(TypeError, function() {
    Object.getOwnPropertyDescriptor(p, "symbol");
  });
  
  assert.throws(TypeError, function() {
    Object.getOwnPropertyDescriptor(p, "boolean");
  });
  
  assert.throws(TypeError, function() {
    Object.getOwnPropertyDescriptor(p, "fn");
  });
  