LayoutTests/ietestcenter/Javascript/TestCases/15.2.3.6-4-1.js

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/*
Step 4 of defineProperty calls the [[DefineOwnProperty]] internal method
of O passing 'true' for the Throw flag. In this case, step 3 of
[[DefineOwnProperty]] requires that it throw a TypeError exception when
current is undefined and extensible is false. The value of desc does not
matter.
*/


ES5Harness.registerTest( {
id: "15.2.3.6-4-1",

path: "TestCases/chapter15/15.2/15.2.3/15.2.3.6/15.2.3.6-4-1.js",

description: "Object.defineProperty throws TypeError when adding properties to non-extensible objects",

test: function testcase() {
  var o = {};
  Object.preventExtensions(o);

  try {
    var desc = { value: 1 };
    Object.defineProperty(o, "foo", desc);
  }
  catch (e) {
      if (e instanceof TypeError &&
          (o.hasOwnProperty("foo") === false)) {
      return true;
    }
  }
 },

precondition: function prereq() {
  return fnExists(Object.defineProperty) && fnExists(Object.preventExtensions);
 }
});