Version 4.3.13.1 (cherry-pick)

test/mjsunit/es6/function-name-configurable.js

-// Copyright 2015 the V8 project authors. All rights reserved.
-// Use of this source code is governed by a BSD-style license that can be
-// found in the LICENSE file.
-
-function getStrictF() {
-  'use strict';
-  return function f() {};
-}
-
-
-function getSloppyF() {
-  return function f() {};
-}
-
-
-function test(testFunction) {
-  testFunction(getStrictF());
-  testFunction(getSloppyF());
-}
-
-
-function testDescriptor(f) {
-  var descr = Object.getOwnPropertyDescriptor(f, 'name');
-  assertTrue(descr.configurable);
-  assertFalse(descr.enumerable);
-  assertEquals('f', descr.value);
-  assertFalse(descr.writable);
-}
-test(testDescriptor);
-
-
-function testSet(f) {
-  f.name = 'g';
-  assertEquals('f', f.name);
-}
-test(testSet);
-
-
-function testSetStrict(f) {
-  'use strict';
-  assertThrows(function() {
-    f.name = 'g';
-  }, TypeError);
-}
-test(testSetStrict);
-
-
-function testReconfigureAsDataProperty(f) {
-  Object.defineProperty(f, 'name', {
-    value: 'g',
-  });
-  assertEquals('g', f.name);
-  Object.defineProperty(f, 'name', {
-    writable: true
-  });
-  f.name = 'h';
-  assertEquals('h', f.name);
-
-  f.name = 42;
-  assertEquals(42, f.name);
-}
-test(testReconfigureAsDataProperty);
-
-
-function testReconfigureAsAccessorProperty(f) {
-  var name = 'g';
-  Object.defineProperty(f, 'name', {
-    get: function() { return name; },
-    set: function(v) { name = v; }
-  });
-  assertEquals('g', f.name);
-  f.name = 'h';
-  assertEquals('h', f.name);
-}
-test(testReconfigureAsAccessorProperty);
-
-
-function testFunctionToString(f) {
-  Object.defineProperty(f, 'name', {
-    value: {toString: function() { assertUnreachable(); }},
-  });
-  assertEquals('function f() {}', f.toString());
-}
-test(testFunctionToString);
-
-
-(function testSetOnInstance() {
-  // This needs to come before testDelete below
-  assertTrue(Function.prototype.hasOwnProperty('name'));
-
-  function f() {}
-  delete f.name;
-  assertEquals('Empty', f.name);
-
-  f.name = 42;
-  assertEquals('Empty', f.name);  // non writable prototype property.
-  assertFalse(f.hasOwnProperty('name'));
-
-  Object.defineProperty(Function.prototype, 'name', {writable: true});
-
-  f.name = 123;
-  assertTrue(f.hasOwnProperty('name'));
-  assertEquals(123, f.name);
-})();
-
-
-(function testDelete() {
-  function f() {}
-  assertTrue(delete f.name);
-  assertFalse(f.hasOwnProperty('name'));
-  assertEquals('Empty', f.name);
-
-  assertTrue(delete Function.prototype.name);
-  assertEquals(undefined, f.name);
-})();