Bug 977849 - Sync test262. (r=evilpie)

--HG--
rename : js/src/tests/test262/built-ins/Date/UTC/nans.js => js/src/tests/test262/built-ins/Date/UTC/no-arg.js
rename : js/src/tests/test262/built-ins/Object/prototype/toString/symbol-tag-override.js => js/src/tests/test262/built-ins/Object/prototype/toString/symbol-tag-override-instances.js
extra : rebase_source : abd712d80a59758d251e54bad64a3c1f86cc17c2

js/src/tests/jstests.list

@@ -722,6 +722,39 @@ skip script test262/annexB/language/eval-code/indirect/global-if-decl-else-decl-
 skip script test262/annexB/language/eval-code/indirect/global-block-decl-eval-global-exsting-global-init.js
 skip script test262/annexB/language/eval-code/indirect/global-switch-case-eval-global-exsting-global-init.js
 
+# https://bugzilla.mozilla.org/show_bug.cgi?id=1331092
+skip script test262/language/expressions/async-generators/expression-yield-as-statement.js
+skip script test262/language/expressions/async-generators/expression-await-thenable-as-yield-operand.js
+skip script test262/language/expressions/async-generators/expression-yield-as-operand.js
+skip script test262/language/expressions/async-generators/expression-await-as-yield-operand.js
+skip script test262/language/expressions/async-generators/expression-yield-newline.js
+skip script test262/language/expressions/async-generators/expression-await-promise-as-yield-operand.js
+skip script test262/language/expressions/async-generators/expression-yield-star-before-newline.js
+
+# https://bugzilla.mozilla.org/show_bug.cgi?id=1050755
+skip script test262/built-ins/Date/UTC/return-value.js
+
+# PluralRules.
+skip script test262/intl402/PluralRules/builtin.js
+skip script test262/intl402/PluralRules/this-not-ignored.js
+skip script test262/intl402/PluralRules/name.js
+skip script test262/intl402/PluralRules/length.js
+skip script test262/intl402/PluralRules/supportedLocalesOf/main.js
+skip script test262/intl402/PluralRules/can-be-subclassed.js
+skip script test262/intl402/PluralRules/internals.js
+skip script test262/intl402/PluralRules/prototype/properties.js
+skip script test262/intl402/PluralRules/supportedLocalesOf/supportedLocalesOf.js
+skip script test262/intl402/PluralRules/supportedLocalesOf/name.js
+skip script test262/intl402/PluralRules/supportedLocalesOf/arguments.js
+skip script test262/intl402/PluralRules/prototype/builtins.js
+skip script test262/intl402/PluralRules/prototype/prototype.js
+skip script test262/intl402/PluralRules/prototype/bind.js
+skip script test262/intl402/PluralRules/prototype/resolvedOptions/name.js
+skip script test262/intl402/PluralRules/prototype/resolvedOptions/properties.js
+skip script test262/intl402/PluralRules/prototype/resolvedOptions/builtins.js
+skip script test262/intl402/PluralRules/prototype/constructor/main.js
+skip script test262/intl402/PluralRules/prototype/select/name.js
+
 # SIMD.
 skip script test262/built-ins/Simd/check.js
 skip script test262/built-ins/Simd/from.js

js/src/tests/test262/GIT-INFO

@@ -1,8 +1,5 @@
-commit 4ff7e4342e1a15ce7af893ba9af9bd55c7d95e51
+commit 8a0563dd5eb9c6ee1df8a17cf8f626c35fa56a46
-Author: Adam Klein <adamk@chromium.org>
+Author: Corey Frang <gnarf@gnarf.net>
-Date:   Wed Dec 28 17:18:19 2016 -0800
+Date:   Tue Jan 31 10:50:39 2017 -0500
 
-    Fix test for instantiating a class extending null (#813)
+    Remove old test file (now using the named version)
-    
-    The sameValue assertion should be that the [[Prototype]] is
-    equal to the class's prototype, not the constructor.

js/src/tests/test262/built-ins/Array/isArray/descriptor.js

@@ -0,0 +1,15 @@
+// Copyright 2017 Lyza Danger Gardner. All rights reserved.
+// This code is governed by the license found in the LICENSE file.
+
+/*---
+description: Testing descriptor property of Array.isArray
+includes:
+    - propertyHelper.js
+esid: sec-array.isarray
+---*/
+
+verifyWritable(Array, "isArray");
+verifyNotEnumerable(Array, "isArray");
+verifyConfigurable(Array, "isArray");
+
+reportCompare(0, 0);

js/src/tests/test262/built-ins/Array/prototype/every/15.4.4.16-0-2.js

@@ -1,11 +0,0 @@
-// Copyright (c) 2012 Ecma International.  All rights reserved.
-// This code is governed by the BSD license found in the LICENSE file.
-
-/*---
-es5id: 15.4.4.16-0-2
-description: Array.prototype.every.length must be 1
----*/
-
-assert.sameValue(Array.prototype.every.length, 1, 'Array.prototype.every.length');
-
-reportCompare(0, 0);

js/src/tests/test262/built-ins/Array/prototype/every/length.js

@@ -0,0 +1,23 @@
+// Copyright (c) 2012 Ecma International.  All rights reserved.
+// Copyright (C) 2017 Corey Frang. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+esid: sec-array.prototype.every
+description: >
+  Array.prototype.every.length value and property descriptor
+info: >
+  Array.prototype.every ( callbackfn [ , thisArg] )
+  The length property of the of function is 1.
+includes: [propertyHelper.js]
+---*/
+
+assert.sameValue(
+  Array.prototype.every.length, 1,
+  'The value of `Array.prototype.every.length` is `1`'
+);
+
+verifyNotEnumerable(Array.prototype.every, 'length');
+verifyNotWritable(Array.prototype.every, 'length');
+verifyConfigurable(Array.prototype.every, 'length');
+
+reportCompare(0, 0);

js/src/tests/test262/built-ins/ArrayBuffer/data-allocation-after-object-creation.js

@@ -1,44 +1,3 @@
-<<<<<<< HEAD
-// Copyright (C) 2015 André Bargull. All rights reserved.
-// This code is governed by the BSD license found in the LICENSE file.
-
-/*---
-es6id: 24.1.2.1
-description: >
-  The new ArrayBuffer instance is created prior to allocating the Data Block.
-info: >
-  ArrayBuffer( length )
-
-  ...
-  6. Return AllocateArrayBuffer(NewTarget, byteLength).
-
-  AllocateArrayBuffer( constructor, byteLength )
-    1. Let obj be OrdinaryCreateFromConstructor(constructor, "%ArrayBufferPrototype%",
-       «[[ArrayBufferData]], [[ArrayBufferByteLength]]» ).
-    2. ReturnIfAbrupt(obj).
-    ...
-    4. Let block be CreateByteDataBlock(byteLength).
-    5. ReturnIfAbrupt(block).
-    ...
-features: [Reflect.construct]
----*/
-
-function DummyError() { }
-
-var newTarget = function(){}.bind(null);
-Object.defineProperty(newTarget, "prototype", {
-  get: function() {
-    throw new DummyError();
-  }
-});
-
-assert.throws(DummyError, function() {
-  // Allocating 7 PiB should fail with a RangeError.
-  // Math.pow(1024, 5) = 1125899906842624
-  Reflect.construct(ArrayBuffer, [7 * 1125899906842624], newTarget);
-});
-||||||| parent of f70a7f3... p3
-=======
 // Copyright (C) 2015 André Bargull. All rights reserved.
 // This code is governed by the BSD license found in the LICENSE file.
 
@@ -79,4 +38,3 @@ assert.throws(DummyError, function() {
 });
 
 reportCompare(0, 0);
->>>>>>> f70a7f3... p3

js/src/tests/test262/built-ins/Date/UTC/infinity-make-day.js

@@ -14,6 +14,9 @@ info: |
      NaN.
 ---*/
 
+assert.sameValue(Date.UTC(Infinity), NaN, 'year: Infinity - single arg');
+assert.sameValue(Date.UTC(-Infinity), NaN, 'year: -Infinity - single arg');
+
 assert.sameValue(Date.UTC(Infinity, 0), NaN, 'year: Infinity');
 assert.sameValue(Date.UTC(-Infinity, 0), NaN, 'year: -Infinity');
 
@@ -23,4 +26,5 @@ assert.sameValue(Date.UTC(0, -Infinity), NaN, 'month: -Infinity');
 assert.sameValue(Date.UTC(0, 0, Infinity), NaN, 'date: Infinity');
 assert.sameValue(Date.UTC(0, 0, -Infinity), NaN, 'date: -Infinity');
 
+
 reportCompare(0, 0);

js/src/tests/test262/built-ins/Date/UTC/nans.js

@@ -17,12 +17,13 @@ info: |
   9. Return TimeClip(MakeDate(MakeDay(yr, m, dt), MakeTime(h, min, s, milli))).
 ---*/
 
-assert.sameValue(new Date(NaN, 0).getTime(), NaN, 'year');
+assert.sameValue(Date.UTC(NaN), NaN, 'year');
-assert.sameValue(new Date(1970, NaN).getTime(), NaN, 'month');
+assert.sameValue(Date.UTC(NaN, 0), NaN, 'year');
-assert.sameValue(new Date(1970, 0, NaN).getTime(), NaN, 'date');
+assert.sameValue(Date.UTC(1970, NaN), NaN, 'month');
-assert.sameValue(new Date(1970, 0, 1, NaN).getTime(), NaN, 'hours');
+assert.sameValue(Date.UTC(1970, 0, NaN), NaN, 'date');
-assert.sameValue(new Date(1970, 0, 1, 0, NaN).getTime(), NaN, 'minutes');
+assert.sameValue(Date.UTC(1970, 0, 1, NaN), NaN, 'hours');
-assert.sameValue(new Date(1970, 0, 1, 0, 0, NaN).getTime(), NaN, 'seconds');
+assert.sameValue(Date.UTC(1970, 0, 1, 0, NaN), NaN, 'minutes');
-assert.sameValue(new Date(1970, 0, 1, 0, 0, 0, NaN).getTime(), NaN, 'ms');
+assert.sameValue(Date.UTC(1970, 0, 1, 0, 0, NaN), NaN, 'seconds');
+assert.sameValue(Date.UTC(1970, 0, 1, 0, 0, 0, NaN), NaN, 'ms');
 
 reportCompare(0, 0);

js/src/tests/test262/built-ins/Date/UTC/no-arg.js

@@ -0,0 +1,22 @@
+// Copyright (C) 2016 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+esid: sec-date.utc
+es6id: 20.3.3.4
+description: Tests for non optional arguments
+info: |
+  1. Let y be ? ToNumber(year).
+  2. Let m be ? ToNumber(month).
+  3. If date is supplied, let dt be ? ToNumber(date); else let dt be 1.
+  4. If hours is supplied, let h be ? ToNumber(hours); else let h be 0.
+  5. If minutes is supplied, let min be ? ToNumber(minutes); else let min be 0.
+  6. If seconds is supplied, let s be ? ToNumber(seconds); else let s be 0.
+  7. If ms is supplied, let milli be ? ToNumber(ms); else let milli be 0.
+  8. If y is not NaN and 0 ≤ ToInteger(y) ≤ 99, let yr be 1900+ToInteger(y);
+     otherwise, let yr be y.
+  9. Return TimeClip(MakeDate(MakeDay(yr, m, dt), MakeTime(h, min, s, milli))).
+---*/
+
+assert.sameValue(Date.UTC(), NaN, 'missing non-optional year argument');
+
+reportCompare(0, 0);

js/src/tests/test262/built-ins/Date/UTC/return-value.js

@@ -17,6 +17,8 @@ info: |
   9. Return TimeClip(MakeDate(MakeDay(yr, m, dt), MakeTime(h, min, s, milli))).
 ---*/
 
+assert.sameValue(Date.UTC(1970), 0, '1970');
+
 assert.sameValue(Date.UTC(1970, 0), 0, '1970, 0');
 assert.sameValue(Date.UTC(2016, 0), 1451606400000, '2016, 0');
 assert.sameValue(Date.UTC(2016, 6), 1467331200000, '2016, 6');

js/src/tests/test262/built-ins/Function/prototype/toString/line-terminator-normalisation-CR-LF.js

@@ -5,7 +5,7 @@
 esid: sec-function-definitions-runtime-semantics-instantiatefunctionobject
 description: Function.prototype.toString line terminator normalisation (CR-LF)
 info: >
-  Function.prototype.toString should normalise line terminator sequences to Line Feed characters.
+  Function.prototype.toString should not normalise line terminator sequences to Line Feed characters.
   This file uses (Carriage Return, Line Feed) sequences as line terminators.
 ---*/
 
@@ -33,6 +33,6 @@ y
 }
 // after
 
-assert.sameValue(f.toString(), "function\n// a\nf\n// b\n(\n// c\nx\n// d\n,\n// e\ny\n// f\n)\n// g\n{\n// h\n;\n// i\n;\n// j\n}");
+assert.sameValue(f.toString(), "function\r\n// a\r\nf\r\n// b\r\n(\r\n// c\r\nx\r\n// d\r\n,\r\n// e\r\ny\r\n// f\r\n)\r\n// g\r\n{\r\n// h\r\n;\r\n// i\r\n;\r\n// j\r\n}");
 
 reportCompare(0, 0);

js/src/tests/test262/built-ins/Function/prototype/toString/line-terminator-normalisation-CR.js

@@ -1,2 +1,3 @@
-// Copyright (C) 2016 Michael Ficarra. All rights reserved.
// This code is governed by the BSD license found in the LICENSE file.

/*---
esid: sec-function-definitions-runtime-semantics-instantiatefunctionobject
description: Function.prototype.toString line terminator normalisation (CR)
info: >
  Function.prototype.toString should normalise line terminator sequences to Line Feed characters.
  This file uses Carriage Return characters as line terminators.
---*/

// before
function
// a
f
// b
(
// c
x
// d
,
// e
y
// f
)
// g
{
// h
;
// i
;
// j
}
// after

assert.sameValue(f.toString(), "function\n// a\nf\n// b\n(\n// c\nx\n// d\n,\n// e\ny\n// f\n)\n// g\n{\n// h\n;\n// i\n;\n// j\n}");
+// Copyright (C) 2016 Michael Ficarra. All rights reserved.
// This code is governed by the BSD license found in the LICENSE file.

/*---
esid: sec-function-definitions-runtime-semantics-instantiatefunctionobject
description: Function.prototype.toString line terminator normalisation (CR)
info: >
  Function.prototype.toString should not normalise line terminator sequences to Line Feed characters.
  This file uses Carriage Return characters as line terminators.
---*/

// before
function
// a
f
// b
(
// c
x
// d
,
// e
y
// f
)
// g
{
// h
;
// i
;
// j
}
// after

assert.sameValue(f.toString(), "function\r// a\rf\r// b\r(\r// c\rx\r// d\r,\r// e\ry\r// f\r)\r// g\r{\r// h\r;\r// i\r;\r// j\r}");
+
 reportCompare(0, 0);

js/src/tests/test262/built-ins/Function/prototype/toString/line-terminator-normalisation-LF.js

@@ -5,7 +5,7 @@
 esid: sec-function-definitions-runtime-semantics-instantiatefunctionobject
 description: Function.prototype.toString line terminator normalisation (LF)
 info: >
-  Function.prototype.toString should normalise line terminator sequences to Line Feed characters.
+  Function.prototype.toString should not normalise line terminator sequences to Line Feed characters.
   This file uses Line Feed characters as line terminators.
 ---*/
 

js/src/tests/test262/built-ins/Number/prototype/toFixed/length.js

@@ -0,0 +1,32 @@
+// Copyright (C) 2017 Michael "Z" Goddard. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+esid: sec-number.prototype.tofixed
+es6id: 20.1.3.3
+description: >
+  Number.prototype.toFixed.length is 1.
+info: >
+  Number.prototype.toFixed ( fractionDigits )
+
+  17 ECMAScript Standard Built-in Objects:
+    Every built-in Function object, including constructors, has a length
+    property whose value is an integer. Unless otherwise specified, this
+    value is equal to the largest number of named arguments shown in the
+    subclause headings for the function description, including optional
+    parameters. However, rest parameters shown using the form “...name”
+    are not included in the default argument count.
+
+    Unless otherwise specified, the length property of a built-in Function
+    object has the attributes { [[Writable]]: false, [[Enumerable]]: false,
+    [[Configurable]]: true }.
+includes: [propertyHelper.js]
+---*/
+
+assert.sameValue(Number.prototype.toFixed.length, 1);
+
+verifyNotEnumerable(Number.prototype.toFixed, "length");
+verifyNotWritable(Number.prototype.toFixed, "length");
+verifyConfigurable(Number.prototype.toFixed, "length");
+
+reportCompare(0, 0);

js/src/tests/test262/built-ins/Number/prototype/toFixed/return-type.js

@@ -0,0 +1,12 @@
+// Copyright (C) 2017 K. Adam White. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+esid: sec-number.prototype.tofixed
+description: >
+  Number.prototype.toFixed returns a string value
+---*/
+
+assert.sameValue(typeof (123.456).toFixed(), "string");
+
+reportCompare(0, 0);

js/src/tests/test262/built-ins/Object/prototype/toString/symbol-tag-override-primitives.js

@@ -0,0 +1,44 @@
+// Copyright (C) 2017 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+description: >
+    String values of `Symbol.toStringTag` property override built-in tags
+es6id: 19.1.3.6
+info: >
+    1. If the this value is undefined, return "[object Undefined]".
+    2. If the this value is null, return "[object Null]".
+
+    14. Else, let builtinTag be "Object".
+    15. Let tag be ? Get(O, @@toStringTag).
+    16. If Type(tag) is not String, let tag be builtinTag.
+    17. Return the String that is the result of concatenating "[object ", tag, and "]".
+
+    4.3.2 primitive value
+
+    member of one of the types Undefined, Null, Boolean, Number, Symbol, or String as defined in clause 6
+
+features: [Symbol.toStringTag]
+---*/
+
+
+Boolean.prototype[Symbol.toStringTag] = 'test262';
+assert.sameValue(Object.prototype.toString.call(Boolean.prototype), '[object test262]');
+assert.sameValue(Object.prototype.toString.call(true), '[object test262]');
+
+Number.prototype[Symbol.toStringTag] = 'test262';
+assert.sameValue(Object.prototype.toString.call(Number.prototype), '[object test262]');
+assert.sameValue(Object.prototype.toString.call(0), '[object test262]');
+
+String.prototype[Symbol.toStringTag] = 'test262';
+assert.sameValue(Object.prototype.toString.call(String.prototype), '[object test262]');
+assert.sameValue(Object.prototype.toString.call(''), '[object test262]');
+
+
+Object.defineProperty(Symbol.prototype, Symbol.toStringTag, {
+  value: 'test262'
+});
+
+assert.sameValue(Object.prototype.toString.call(Symbol.prototype), '[object test262]');
+
+reportCompare(0, 0);

js/src/tests/test262/intl402/6.2.2_b.js

@@ -19,7 +19,9 @@ var invalidLanguageTags = [
     "i_klingon",
     "cmn-hans-cn-t-ca-u-ca-x_t-u",
     "enochian_enochian",
-    "de-gregory_u-ca-gregory"
+    "de-gregory_u-ca-gregory",
+    "de-tester-Tester",  // Case-insensitive duplicate variant subtag
+    "de-DE-u-kn-true-U-kn-true",  // Case-insensitive duplicate singleton subtag
 ];
 
 testWithIntlConstructors(function (Constructor) {

js/src/tests/test262/intl402/NumberFormat/11.1.1_20_c.js

@@ -37,7 +37,6 @@ var currencyDigits = {
     BSD: 2,
     BTN: 2,
     BWP: 2,
-    BYR: 0,
     BZD: 2,
     CAD: 2,
     CDF: 2,

js/src/tests/test262/intl402/PluralRules/builtin.js

@@ -0,0 +1,17 @@
+// |reftest| skip-if(!this.hasOwnProperty('Intl')) -- needs Intl
+// Copyright 2016 Mozilla Corporation. All rights reserved.
+// This code is governed by the license found in the LICENSE file.
+
+/*---
+esid: sec-Intl.PluralRules
+description: >
+    Tests that Intl.PluralRules meets the requirements for
+    built-in objects defined by the introduction of chapter 17 of the
+    ECMAScript Language Specification.
+author: Zibi Braniecki
+includes: [testBuiltInObject.js]
+---*/
+
+testBuiltInObject(Intl.PluralRules, true, true, ["supportedLocalesOf"], 0);
+
+reportCompare(0, 0);

js/src/tests/test262/intl402/PluralRules/can-be-subclassed.js

@@ -0,0 +1,31 @@
+// |reftest| skip-if(!this.hasOwnProperty('Intl')) -- needs Intl
+// Copyright 2016 Mozilla Corporation. All rights reserved.
+// This code is governed by the license found in the LICENSE file.
+
+/*---
+esid: sec-intl-pluralrules-constructor
+description: Tests that Intl.PluralRules can be subclassed.
+author: Zibi Braniecki
+includes: [testIntl.js]
+---*/
+
+// get a plural-rules and have it format an array of dates for comparison with the subclass
+var locales = ["tlh", "id", "en"];
+var a = [1, 5, 12];
+
+var referencePluralRules = new Intl.PluralRules(locales);
+var referenceSelected = a.map(referencePluralRules.select.bind(referencePluralRules));
+
+class MyPluralRules extends Intl.PluralRules {
+  constructor(locales, options) {
+    super(locales, options);
+    // could initialize MyPluralRules properties
+  }
+  // could add methods to MyPluralRules.prototype
+}
+
+var pr = new MyPluralRules(locales);
+var actual = a.map(pr.select.bind(pr));
+testArraysAreSame(referenceSelected, actual);
+
+reportCompare(0, 0);

js/src/tests/test262/intl402/PluralRules/internals.js

@@ -0,0 +1,24 @@
+// |reftest| skip-if(!this.hasOwnProperty('Intl')) -- needs Intl
+// Copyright 2016 Mozilla Corporation. All rights reserved.
+// This code is governed by the license found in the LICENSE file.
+
+/*---
+esid: sec-intl-pluralrules-constructor
+description: >
+    Tests that objects constructed by Intl.PluralRules have the specified
+    internal properties.
+author: Zibi Braniecki
+---*/
+
+var obj = new Intl.PluralRules();
+
+var actualPrototype = Object.getPrototypeOf(obj);
+if (actualPrototype !== Intl.PluralRules.prototype) {
+    $ERROR("Prototype of object constructed by Intl.PluralRules isn't Intl.PluralRules.prototype; got " + actualPrototype);
+}
+
+if (!Object.isExtensible(obj)) {
+    $ERROR("Object constructed by Intl.PluralRules must be extensible.");
+}
+
+reportCompare(0, 0);

js/src/tests/test262/intl402/PluralRules/length.js

@@ -0,0 +1,18 @@
+// |reftest| skip-if(!this.hasOwnProperty('Intl')) -- needs Intl
+// Copyright 2016 Mozilla Corporation. All rights reserved.
+// This code is governed by the license found in the LICENSE file.
+
+/*---
+esid: sec-Intl.PluralRules
+description: Intl.PluralRules.length.
+author: Zibi Braniecki
+includes: [propertyHelper.js]
+---*/
+
+assert.sameValue(Intl.PluralRules.length, 0);
+
+verifyNotEnumerable(Intl.PluralRules, "length");
+verifyNotWritable(Intl.PluralRules, "length");
+verifyConfigurable(Intl.PluralRules, "length");
+
+reportCompare(0, 0);

js/src/tests/test262/intl402/PluralRules/name.js

@@ -0,0 +1,18 @@
+// |reftest| skip-if(!this.hasOwnProperty('Intl')) -- needs Intl
+// Copyright 2016 Mozilla Corporation. All rights reserved.
+// This code is governed by the license found in the LICENSE file.
+
+/*---
+esid: sec-Intl.PluralRules
+description: Intl.PluralRules.name is "PluralRules"
+author: Zibi Braniecki
+includes: [propertyHelper.js]
+---*/
+
+assert.sameValue(Intl.PluralRules.name, "PluralRules");
+
+verifyNotEnumerable(Intl.PluralRules, "name");
+verifyNotWritable(Intl.PluralRules, "name");
+verifyConfigurable(Intl.PluralRules, "name");
+
+reportCompare(0, 0);

js/src/tests/test262/intl402/PluralRules/prototype/bind.js

@@ -0,0 +1,37 @@
+// |reftest| skip-if(!this.hasOwnProperty('Intl')) -- needs Intl
+// Copyright 2016 Mozilla Corporation. All rights reserved.
+// This code is governed by the license found in the LICENSE file.
+
+/*---
+esid: sec-properties-of-intl-pluralrules-prototype-object
+description: >
+    Tests that Intl.PluralRules.prototype functions throw a TypeError if
+    called on a non-object value or an object that hasn't been
+    initialized as a PluralRules.
+author: Zibi Braniecki
+---*/
+
+var functions = {
+    select: Intl.PluralRules.prototype.select,
+    resolvedOptions: Intl.PluralRules.prototype.resolvedOptions
+};
+var invalidTargets = [undefined, null, true, 0, "PluralRules", [], {}];
+
+Object.getOwnPropertyNames(functions).forEach(function (functionName) {
+    var f = functions[functionName];
+    invalidTargets.forEach(function (target) {
+        var error;
+        try {
+            f.call(target);
+        } catch (e) {
+            error = e;
+        }
+        if (error === undefined) {
+            $ERROR("Calling " + functionName + " on " + target + " was not rejected.");
+        } else if (error.name !== "TypeError") {
+            $ERROR("Calling " + functionName + " on " + target + " was rejected with wrong error " + error.name + ".");
+        }
+    });
+});
+
+reportCompare(0, 0);

js/src/tests/test262/intl402/PluralRules/prototype/builtins.js

@@ -0,0 +1,17 @@
+// |reftest| skip-if(!this.hasOwnProperty('Intl')) -- needs Intl
+// Copyright 2016 Mozilla Corporation. All rights reserved.
+// This code is governed by the license found in the LICENSE file.
+
+/*---
+esid: sec-properties-of-intl-pluralrules-prototype-object
+description: >
+    Tests that Intl.PluralRules.prototype meets the requirements for
+    built-in objects defined by the introduction of chapter 17 of the
+    ECMAScript Language Specification.
+author: Zibi Braniecki
+includes: [testBuiltInObject.js]
+---*/
+
+testBuiltInObject(Intl.PluralRules.prototype, false, false, ["constructor", "select", "resolvedOptions"]);
+
+reportCompare(0, 0);

js/src/tests/test262/intl402/PluralRules/prototype/constructor/main.js

@@ -0,0 +1,18 @@
+// |reftest| skip-if(!this.hasOwnProperty('Intl')) -- needs Intl
+// Copyright 2016 Mozilla Corporation. All rights reserved.
+// This code is governed by the license found in the LICENSE file.
+
+/*---
+esid: sec-Intl.PluralRules.prototype.constructor
+description: >
+    Tests that Intl.PluralRules.prototype is an object that has been
+    initialized as an Intl.PluralRules.
+author: Zibi Braniecki
+---*/
+
+if (Intl.PluralRules.prototype.constructor !== Intl.PluralRules) {
+    $ERROR("Intl.PluralRules.prototype.constructor is not the same as " +
+          "Intl.PluralRules");
+}
+
+reportCompare(0, 0);

js/src/tests/test262/intl402/PluralRules/prototype/properties.js

@@ -0,0 +1,25 @@
+// |reftest| skip-if(!this.hasOwnProperty('Intl')) -- needs Intl
+// Copyright 2016 Mozilla Corporation. All rights reserved.
+// This code is governed by the license found in the LICENSE file.
+
+/*---
+esid: sec-properties-of-intl-pluralrules-prototype-object
+description: Tests that Intl.PluralRules.prototype has the required attributes.
+author: Zibi Braniecki
+---*/
+
+var desc = Object.getOwnPropertyDescriptor(Intl.PluralRules, "prototype");
+if (desc === undefined) {
+    $ERROR("Intl.PluralRules.prototype is not defined.");
+}
+if (desc.writable) {
+    $ERROR("Intl.PluralRules.prototype must not be writable.");
+}
+if (desc.enumerable) {
+    $ERROR("Intl.PluralRules.prototype must not be enumerable.");
+}
+if (desc.configurable) {
+    $ERROR("Intl.PluralRules.prototype must not be configurable.");
+}
+
+reportCompare(0, 0);

js/src/tests/test262/intl402/PluralRules/prototype/prototype.js

@@ -0,0 +1,20 @@
+// |reftest| skip-if(!this.hasOwnProperty('Intl')) -- needs Intl
+// Copyright 2016 Mozilla Corporation. All rights reserved.
+// This code is governed by the license found in the LICENSE file.
+
+/*---
+esid: sec-properties-of-intl-pluralrules-prototype-object
+description: >
+    Tests that Intl.PluralRules.prototype is an object that  has been
+    initialized as an Intl.PluralRules.
+author: Zibi Braniecki
+---*/
+
+// test by calling a function that would fail if "this" were not an object
+// initialized as an Intl.PluralRules
+if (typeof Intl.PluralRules.prototype.select(0) !== "string") {
+    $ERROR("Intl.PluralRules's prototype is not an object that has been " +
+        "initialized as an Intl.PluralRules");
+}
+
+reportCompare(0, 0);

js/src/tests/test262/intl402/PluralRules/prototype/resolvedOptions/builtins.js

@@ -0,0 +1,17 @@
+// |reftest| skip-if(!this.hasOwnProperty('Intl')) -- needs Intl
+// Copyright 2016 Mozilla Corporation. All rights reserved.
+// This code is governed by the license found in the LICENSE file.
+
+/*---
+esid: sec-Intl.PluralRules.prototype.resolvedOptions
+description: >
+    Tests that Intl.PluralRules.prototype.resolvedOptions meets the requirements for
+    built-in objects defined by the introduction of chapter 17 of the
+    ECMAScript Language Specification.
+author: Zibi Braniecki
+includes: [testBuiltInObject.js]
+---*/
+
+testBuiltInObject(Intl.PluralRules.prototype.resolvedOptions, true, false, [], 0);
+
+reportCompare(0, 0);

js/src/tests/test262/intl402/PluralRules/prototype/resolvedOptions/name.js

@@ -0,0 +1,18 @@
+// |reftest| skip-if(!this.hasOwnProperty('Intl')) -- needs Intl
+// Copyright 2016 Mozilla Corporation. All rights reserved.
+// This code is governed by the license found in the LICENSE file.
+
+/*---
+esid: sec-Intl.PluralRules.resolvedOptions.name
+description: Intl.PluralRules.resolvedOptions.name is "resolvedOptions"
+author: Zibi Braniecki
+includes: [propertyHelper.js]
+---*/
+
+assert.sameValue(Intl.PluralRules.prototype.resolvedOptions.name, "resolvedOptions");
+
+verifyNotEnumerable(Intl.PluralRules.prototype.resolvedOptions, "name");
+verifyNotWritable(Intl.PluralRules.prototype.resolvedOptions, "name");
+verifyConfigurable(Intl.PluralRules.prototype.resolvedOptions, "name");
+
+reportCompare(0, 0);

js/src/tests/test262/intl402/PluralRules/prototype/resolvedOptions/properties.js

@@ -0,0 +1,33 @@
+// |reftest| skip-if(!this.hasOwnProperty('Intl')) -- needs Intl
+// Copyright 2016 Mozilla Corporation. All rights reserved.
+// This code is governed by the license found in the LICENSE file.
+
+/*---
+esid: sec-Intl.PluralRules.prototype.resolvedOptions
+description: >
+    Tests that the object returned by
+    Intl.PluralRules.prototype.resolvedOptions  has the right
+    properties.
+author: Zibi Braniecki
+includes: [testIntl.js]
+---*/
+
+var actual = new Intl.PluralRules().resolvedOptions();
+
+var actual2 = new Intl.PluralRules().resolvedOptions();
+if (actual2 === actual) {
+    $ERROR("resolvedOptions returned the same object twice.");
+}
+
+// this assumes the default values where the specification provides them
+mustHaveProperty(actual, "locale", isCanonicalizedStructurallyValidLanguageTag);
+mustHaveProperty(actual, "type", ["cardinal"]);
+mustNotHaveProperty(actual, "currency");
+mustNotHaveProperty(actual, "currencyDisplay");
+mustHaveProperty(actual, "minimumIntegerDigits", [1]);
+mustHaveProperty(actual, "minimumFractionDigits", [0]);
+mustHaveProperty(actual, "maximumFractionDigits", [3]);
+mustNotHaveProperty(actual, "minimumSignificantDigits");
+mustNotHaveProperty(actual, "maximumSignificantDigits");
+
+reportCompare(0, 0);

js/src/tests/test262/intl402/PluralRules/prototype/select/name.js

@@ -0,0 +1,20 @@
+// |reftest| skip-if(!this.hasOwnProperty('Intl')) -- needs Intl
+// Copyright 2016 Mozilla Corporation. All rights reserved.
+// This code is governed by the license found in the LICENSE file.
+
+/*---
+esid: sec-Intl.PluralRules.prototype.select
+description: Intl.PluralRules.prototype.select.name is "select"
+author: Zibi Braniecki
+includes: [propertyHelper.js]
+---*/
+
+assert.sameValue(Intl.PluralRules.prototype.select.name, 'select',
+  'The value of `Intl.PluralRules.prototype.select.name` is `"select"`'
+);
+
+verifyNotEnumerable(Intl.PluralRules.prototype.select, 'name');
+verifyNotWritable(Intl.PluralRules.prototype.select, 'name');
+verifyConfigurable(Intl.PluralRules.prototype.select, 'name');
+
+reportCompare(0, 0);

js/src/tests/test262/intl402/PluralRules/prototype/select/non-finite.js

@@ -0,0 +1,25 @@
+// |reftest| skip -- has YAML errors
+// Copyright 2016 Mozilla Corporation. All rights reserved.
+// This code is governed by the license found in the LICENSE file.
+
+/*---
+esid: sec-Intl.PluralRules.prototype.select
+description: Tests that select function returns "other" for non finite values.
+info:
+  1.1.4. ResolvePlural (pluralRules, n)
+  (...)
+  1.1.4_3. If isFinite(n) is false, then
+  1.1.4_3.a. Return "other".
+author: Zibi Braniecki
+
+---*/
+
+var invalidValues = [NaN, Infinity, -Infinity];
+
+var pr = new Intl.PluralRules();
+
+invalidValues.forEach(function (value) {
+    assert.sameValue(pr.select(value), "other");
+});
+
+reportCompare(0, 0);

js/src/tests/test262/intl402/PluralRules/prototype/select/tainting.js

@@ -0,0 +1,23 @@
+// |reftest| skip -- has YAML errors
+// Copyright 2016 Mozilla Corporation. All rights reserved.
+// This code is governed by the license found in the LICENSE file.
+
+/*---
+esid: sec-intl-pluralrules-abstracts
+description: >
+    Tests that the behavior of a Record is not affected by
+    adversarial  changes to Object.prototype.
+info:
+  1.1.1. InitializePluralRules (pluralRules, locales, options)
+  (...)
+  1.1.1_6. Let t be ? GetOption(options, "type", "string", « "cardinal", "ordinal" », "cardinal").
+author: Zibi Braniecki
+includes: [testIntl.js]
+---*/
+
+taintProperties(["type"]);
+
+var pr = new Intl.PluralRules();
+var time = pr.select(9);
+
+reportCompare(0, 0);

js/src/tests/test262/intl402/PluralRules/supportedLocalesOf/arguments.js

@@ -0,0 +1,17 @@
+// |reftest| skip-if(!this.hasOwnProperty('Intl')) -- needs Intl
+// Copyright 2016 Mozilla Corporation. All rights reserved.
+// This code is governed by the license found in the LICENSE file.
+
+/*---
+esid: sec-Intl.PluralRules.supportedLocalesOf
+description: >
+    Tests that Intl.PluralRules.supportedLocalesOf doesn't access
+    arguments that it's not given.
+author: Zibi Braniecki
+includes: [testIntl.js]
+---*/
+
+taintDataProperty(Object.prototype, "1");
+new Intl.PluralRules("und");
+
+reportCompare(0, 0);

js/src/tests/test262/intl402/PluralRules/supportedLocalesOf/main.js

@@ -0,0 +1,32 @@
+// |reftest| skip-if(!this.hasOwnProperty('Intl')) -- needs Intl
+// Copyright 2016 Mozilla Corporation. All rights reserved.
+// This code is governed by the license found in the LICENSE file.
+
+/*---
+esid: sec-Intl.PluralRules.supportedLocalesOf
+description: >
+    Tests that Intl.PluralRules has a supportedLocalesOf property, and
+    it works as planned.
+author: Zibi Braniecki
+---*/
+
+var defaultLocale = new Intl.PluralRules().resolvedOptions().locale;
+var notSupported = 'zxx'; // "no linguistic content"
+var requestedLocales = [defaultLocale, notSupported];
+    
+var supportedLocales;
+
+if (!Intl.PluralRules.hasOwnProperty('supportedLocalesOf')) {
+    $ERROR("Intl.PluralRules doesn't have a supportedLocalesOf property.");
+}
+    
+supportedLocales = Intl.PluralRules.supportedLocalesOf(requestedLocales);
+if (supportedLocales.length !== 1) {
+    $ERROR('The length of supported locales list is not 1.');
+}
+    
+if (supportedLocales[0] !== defaultLocale) {
+    $ERROR('The default locale is not returned in the supported list.');
+}
+
+reportCompare(0, 0);

js/src/tests/test262/intl402/PluralRules/supportedLocalesOf/name.js

@@ -0,0 +1,17 @@
+// |reftest| skip-if(!this.hasOwnProperty('Intl')) -- needs Intl
+// Copyright 2016 Mozilla Corporation. All rights reserved.
+// This code is governed by the license found in the LICENSE file.
+
+/*---
+esid: sec-Intl.PluralRules.supportedLocalesOf
+description: Tests that Intl.PluralRules.supportedLocalesOf.name is "supportedLocalesOf"
+author: Zibi Braniecki
+includes: [propertyHelper.js]
+---*/
+assert.sameValue(Intl.PluralRules.supportedLocalesOf.name, "supportedLocalesOf");
+
+verifyNotEnumerable(Intl.PluralRules.supportedLocalesOf, "name");
+verifyNotWritable(Intl.PluralRules.supportedLocalesOf, "name");
+verifyConfigurable(Intl.PluralRules.supportedLocalesOf, "name");
+
+reportCompare(0, 0);

js/src/tests/test262/intl402/PluralRules/supportedLocalesOf/supportedLocalesOf.js

@@ -0,0 +1,17 @@
+// |reftest| skip-if(!this.hasOwnProperty('Intl')) -- needs Intl
+// Copyright 2016 Mozilla Corporation. All rights reserved.
+// This code is governed by the license found in the LICENSE file.
+
+/*---
+esid: sec-Intl.PluralRules.supportedLocalesOf
+description: >
+    Tests that Intl.PluralRules.supportedLocalesOf meets the requirements for
+    built-in objects defined by the introduction of chapter 17 of the
+    ECMAScript Language Specification.
+author: Zibi Braniecki
+includes: [testBuiltInObject.js]
+---*/
+
+testBuiltInObject(Intl.PluralRules.supportedLocalesOf, true, false, [], 1);
+
+reportCompare(0, 0);

js/src/tests/test262/intl402/PluralRules/this-not-ignored.js

@@ -0,0 +1,32 @@
+// |reftest| skip-if(!this.hasOwnProperty('Intl')) -- needs Intl
+// Copyright 2016 Mozilla Corporation. All rights reserved.
+// This code is governed by the license found in the LICENSE file.
+
+/*---
+esid: sec-Intl.PluralRules
+description: Tests that the this-value is ignored in PluralRules
+author: Zibi Braniecki
+includes: [testIntl.js]
+---*/
+
+testWithIntlConstructors(function (Constructor) {
+    var obj, newObj;
+
+    // variant 1: use constructor in a "new" expression
+    obj = new Constructor();
+    newObj = Intl.PluralRules.call(obj);
+    if (obj === newObj) {
+      $ERROR("PluralRules object created with \"new\" was not ignored as this-value.");
+    }
+
+    // variant 2: use constructor as a function
+    obj = Constructor();
+    newObj = Intl.PluralRules.call(obj);
+    if (obj === newObj) {
+      $ERROR("PluralRules object created with constructor as function was not ignored as this-value.");
+    }
+
+    return true;
+});
+
+reportCompare(0, 0);

js/src/tests/test262/language/arguments-object/mapped/nonconfigurable-descriptors-basic.js

@@ -0,0 +1,24 @@
+// Copyright (C) 2017 Caio Lima. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+description: Mapped arguments object with non-configurable property property descriptor behavior
+info: >
+    Descriptor of a mapped value is updated when property is made non-configurable.
+flags: [noStrict]
+esid: sec-arguments-exotic-objects-defineownproperty-p-desc
+includes: [propertyHelper.js]
+---*/
+
+function argumentsNonConfigurable(a) {
+  Object.defineProperty(arguments, "0", {configurable: false});
+
+  let propertyDescriptor = Object.getOwnPropertyDescriptor(arguments, "0");
+  assert.sameValue(propertyDescriptor.value, 1);
+  verifyEnumerable(arguments, "0");
+  verifyWritable(arguments, "0");
+  verifyNotConfigurable(arguments, "0");
+}
+argumentsNonConfigurable(1);
+
+reportCompare(0, 0);

js/src/tests/test262/language/arguments-object/mapped/nonconfigurable-descriptors-set-value-by-arguments.js

@@ -0,0 +1,29 @@
+// Copyright (C) 2017 Caio Lima. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+description: Mapped arguments property descriptor change with non-configurable property
+info: >
+    Mapping keep working when property is set to non-configurable and its
+    value is changed using arguments[i] where "i" is the argument index.
+flags: [noStrict]
+esid: sec-arguments-exotic-objects-defineownproperty-p-desc
+includes: [propertyHelper.js]
+---*/
+
+function argumentsAndSetByIndex(a) {
+  Object.defineProperty(arguments, "0", {configurable: false});
+
+  arguments[0] = 2;
+
+  let propertyDescriptor = Object.getOwnPropertyDescriptor(arguments, "0");
+  assert.sameValue(propertyDescriptor.value, 2);
+  assert.sameValue(a, 2);
+  verifyEnumerable(arguments, "0");
+  verifyWritable(arguments, "0");
+  verifyNotConfigurable(arguments, "0");
+}
+argumentsAndSetByIndex(1);
+
+
+reportCompare(0, 0);

js/src/tests/test262/language/arguments-object/mapped/nonconfigurable-descriptors-set-value-with-define-property.js

@@ -0,0 +1,29 @@
+// Copyright (C) 2017 Caio Lima. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+description: Mapped arguments property descriptor change with non-configurable property
+info: >
+    Mapping keep working when property is set to non-configurable and its
+    value is changed using [[DefineOwnProperty]].
+flags: [noStrict]
+esid: sec-arguments-exotic-objects-defineownproperty-p-desc
+includes: [propertyHelper.js]
+---*/
+
+function setArgumentValueWithDefineOwnProperty(a) {
+  Object.defineProperty(arguments, "0", {configurable: false});
+
+  Object.defineProperty(arguments, "0", {value: 2});
+
+  let propertyDescriptor = Object.getOwnPropertyDescriptor(arguments, "0");
+  assert.sameValue(propertyDescriptor.value, 2);
+  assert.sameValue(a, 2);
+  verifyEnumerable(arguments, "0");
+  verifyWritable(arguments, "0");
+  verifyNotConfigurable(arguments, "0");
+}
+setArgumentValueWithDefineOwnProperty(1);
+
+
+reportCompare(0, 0);

js/src/tests/test262/language/arguments-object/mapped/nonconfigurable-descriptors-with-param-assign.js

@@ -0,0 +1,27 @@
+// Copyright (C) 2017 Caio Lima. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+description: Property descriptor of mapped arguments object with non-configurable property
+info: >
+    Mapping keep working when property is set to non-configurable, and its
+    descriptor needs to change properly.
+flags: [noStrict]
+esid: sec-arguments-exotic-objects-defineownproperty-p-desc
+includes: [propertyHelper.js]
+---*/
+
+function argumentsAndSetMutableBinding(a) {
+  Object.defineProperty(arguments, "0", {configurable: false});
+
+  a = 2;
+  let propertyDescriptor = Object.getOwnPropertyDescriptor(arguments, "0");
+  assert.sameValue(propertyDescriptor.value, 2);
+  verifyEnumerable(arguments, "0");
+  verifyWritable(arguments, "0");
+  verifyNotConfigurable(arguments, "0");
+}
+argumentsAndSetMutableBinding(1);
+
+
+reportCompare(0, 0);

js/src/tests/test262/language/arguments-object/mapped/nonconfigurable-nonenumerable-nonwritable-descriptors-basic.js

@@ -0,0 +1,29 @@
+// Copyright (C) 2017 Caio Lima. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+description: Mapped arguments property descriptor change with non-configurable, non-enumerable and non-writable property
+info: >
+    Mapping stop working when property is set to non-writable. The
+    descriptor's enumerable property is the one set before the mapping removal.
+flags: [noStrict]
+esid: sec-arguments-exotic-objects-defineownproperty-p-desc
+includes: [propertyHelper.js]
+---*/
+
+function fn(a) {
+  Object.defineProperty(arguments, "0", {configurable: false, enumerable: false, writable: false});
+
+  // Postcondition: Arguments mapping is removed.
+  a = 2;
+
+  let propertyDescriptor = Object.getOwnPropertyDescriptor(arguments, "0");
+  assert.sameValue(propertyDescriptor.value, 1);
+  verifyNotEnumerable(arguments, "0");
+  verifyNotWritable(arguments, "0");
+  verifyNotConfigurable(arguments, "0");
+}
+fn(1);
+
+
+reportCompare(0, 0);

js/src/tests/test262/language/arguments-object/mapped/nonconfigurable-nonenumerable-nonwritable-descriptors-set-by-arguments.js

@@ -0,0 +1,38 @@
+// Copyright (C) 2017 Caio Lima. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+description: Mapped arguments property descriptor change to non-configurable, non-enumerable and non-writable
+info: >
+    Change the descriptor using [[DefineOwnProperty]] to {configurable: false, enumerable: false},
+    set arguments[0] = 2 and then change property descriptor to {writable: false}.
+    The descriptor's enumerable property is the one set before the mapping removal.
+flags: [noStrict]
+esid: sec-arguments-exotic-objects-defineownproperty-p-desc
+includes: [propertyHelper.js]
+---*/
+
+function fn(a) {
+  Object.defineProperty(arguments, "0", {configurable: false, enumerable: false});
+  arguments[0] = 2;
+  Object.defineProperty(arguments, "0", {writable: false});
+
+  let propertyDescriptor = Object.getOwnPropertyDescriptor(arguments, "0");
+  assert.sameValue(propertyDescriptor.value, 2);
+  assert.sameValue(a, 2);
+  verifyNotEnumerable(arguments, "0");
+  verifyNotWritable(arguments, "0");
+  verifyNotConfigurable(arguments, "0");
+
+  // Postcondition: Arguments mapping is removed.
+  a = 3;
+  propertyDescriptor = Object.getOwnPropertyDescriptor(arguments, "0");
+  assert.sameValue(propertyDescriptor.value, 2);
+  verifyNotEnumerable(arguments, "0");
+  verifyNotWritable(arguments, "0");
+  verifyNotConfigurable(arguments, "0");
+}
+fn(1);
+
+
+reportCompare(0, 0);

js/src/tests/test262/language/arguments-object/mapped/nonconfigurable-nonenumerable-nonwritable-descriptors-set-by-param.js

@@ -0,0 +1,38 @@
+// Copyright (C) 2017 Caio Lima. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+description: Mapped arguments property descriptor change to non-configurable, non-enumerable and non-writable
+info: >
+    Change the descriptor using [[DefineOwnProperty]] to
+    {configurable: false, enumerable: false}, set a = 2 and then
+    change property descriptor to {writable: false}. The descriptor's enumerable
+    property need to be the one set before the mapping removal.
+flags: [noStrict]
+esid: sec-arguments-exotic-objects-defineownproperty-p-desc
+includes: [propertyHelper.js]
+---*/
+
+function fn(a) {
+  Object.defineProperty(arguments, "0", {configurable: false, enumerable: false});
+  a = 2;
+  Object.defineProperty(arguments, "0", {writable: false});
+
+  let propertyDescriptor = Object.getOwnPropertyDescriptor(arguments, "0");
+  assert.sameValue(propertyDescriptor.value, 2);
+  verifyNotEnumerable(arguments, "0");
+  verifyNotWritable(arguments, "0");
+  verifyNotConfigurable(arguments, "0");
+
+  // Postcondition: Arguments mapping is removed.
+  a = 3;
+  propertyDescriptor = Object.getOwnPropertyDescriptor(arguments, "0");
+  assert.sameValue(propertyDescriptor.value, 2);
+  verifyNotEnumerable(arguments, "0");
+  verifyNotWritable(arguments, "0");
+  verifyNotConfigurable(arguments, "0");
+}
+fn(1);
+
+
+reportCompare(0, 0);

js/src/tests/test262/language/arguments-object/mapped/nonconfigurable-nonwritable-descriptors-basic.js

@@ -0,0 +1,30 @@
+// Copyright (C) 2017 Caio Lima. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+description: Mapped arguments property descriptor change with non-configurable and non-writable property
+info: >
+    Mapping stop working when property is set to non-writable. The
+    descriptor's value need to be the one set before the property be configured as
+    writable: false.
+flags: [noStrict]
+esid: sec-arguments-exotic-objects-defineownproperty-p-desc
+includes: [propertyHelper.js]
+---*/
+
+function fn(a) {
+  Object.defineProperty(arguments, "0", {configurable: false, writable: false});
+
+  // Postcondition: Arguments mapping is removed.
+  a = 2;
+
+  let propertyDescriptor = Object.getOwnPropertyDescriptor(arguments, "0");
+  assert.sameValue(propertyDescriptor.value, 1);
+  verifyEnumerable(arguments, "0");
+  verifyNotWritable(arguments, "0");
+  verifyNotConfigurable(arguments, "0");
+}
+fn(1);
+
+
+reportCompare(0, 0);

js/src/tests/test262/language/arguments-object/mapped/nonconfigurable-nonwritable-descriptors-define-property-consecutive.js

@@ -0,0 +1,36 @@
+// Copyright (C) 2017 Caio Lima. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+description: Mapped arguments property descriptor change with non-configurable and non-writable property
+info: >
+    Mapping stop working when property is set to non-writable. Change the
+    descriptor with two [[DefineOwnProperty]] calls. The descriptor's value need to be
+    the one set before the property be configured as writable: false.
+flags: [noStrict]
+esid: sec-arguments-exotic-objects-defineownproperty-p-desc
+includes: [propertyHelper.js]
+---*/
+
+function fn(a) {
+  Object.defineProperty(arguments, "0", {configurable: false});
+  Object.defineProperty(arguments, "0", {writable: false});
+
+  let propertyDescriptor = Object.getOwnPropertyDescriptor(arguments, "0");
+  assert.sameValue(propertyDescriptor.value, 1);
+  verifyEnumerable(arguments, "0");
+  verifyNotWritable(arguments, "0");
+  verifyNotConfigurable(arguments, "0");
+
+  // Postcondition: Arguments mapping is removed.
+  a = 2;
+  propertyDescriptor = Object.getOwnPropertyDescriptor(arguments, "0");
+  assert.sameValue(propertyDescriptor.value, 1);
+  verifyEnumerable(arguments, "0");
+  verifyNotWritable(arguments, "0");
+  verifyNotConfigurable(arguments, "0");
+}
+fn(1);
+
+
+reportCompare(0, 0);

js/src/tests/test262/language/arguments-object/mapped/nonconfigurable-nonwritable-descriptors-set-by-arguments.js

@@ -0,0 +1,39 @@
+// Copyright (C) 2017 Caio Lima. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+description: Mapped arguments property descriptor change to non-configurable and non-writable
+info: >
+    Mapping just stop working when property is set to non-writable. Change the
+    descriptor using [[DefineOwnProperty]] to {configurable: false}, set arguments[0] = 2
+    and then change property descriptor to {writable: false}.
+    The descriptor's value need to be the one set before the property be
+    configured as {writable: false}.
+flags: [noStrict]
+esid: sec-arguments-exotic-objects-defineownproperty-p-desc
+includes: [propertyHelper.js]
+---*/
+
+function fn(a) {
+  Object.defineProperty(arguments, "0", {configurable: false});
+  arguments[0] = 2;
+  Object.defineProperty(arguments, "0", {writable: false});
+  let propertyDescriptor = Object.getOwnPropertyDescriptor(arguments, "0");
+  assert.sameValue(propertyDescriptor.value, 2);
+  assert.sameValue(a, 2)
+  verifyEnumerable(arguments, "0");
+  verifyNotWritable(arguments, "0");
+  verifyNotConfigurable(arguments, "0");
+
+  // Postcondition: Arguments mapping is removed.
+  a = 3;
+  propertyDescriptor = Object.getOwnPropertyDescriptor(arguments, "0");
+  assert.sameValue(propertyDescriptor.value, 2);
+  verifyEnumerable(arguments, "0");
+  verifyNotWritable(arguments, "0");
+  verifyNotConfigurable(arguments, "0");
+}
+fn(1);
+
+
+reportCompare(0, 0);

js/src/tests/test262/language/arguments-object/mapped/nonconfigurable-nonwritable-descriptors-set-by-param.js

@@ -0,0 +1,38 @@
+// Copyright (C) 2017 Caio Lima. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+description: Mapped arguments property descriptor change to non-configurable and non-writable
+info: >
+    Mapping just stop working when property is set to non-writable. Change the
+    descriptor using [[DefineOwnProperty]] to {configurable: false}, set a = 2 and then
+    change property descriptor to {writable: false}. The descriptor's value is
+    the one set before the property be configured as {writable: false}.
+flags: [noStrict]
+esid: sec-arguments-exotic-objects-defineownproperty-p-desc
+includes: [propertyHelper.js]
+---*/
+
+function fn(a) {
+  Object.defineProperty(arguments, "0", {configurable: false});
+  a = 2;
+  Object.defineProperty(arguments, "0", {writable: false});
+
+  let propertyDescriptor = Object.getOwnPropertyDescriptor(arguments, "0");
+  assert.sameValue(propertyDescriptor.value, 2);
+  verifyEnumerable(arguments, "0");
+  verifyNotWritable(arguments, "0");
+  verifyNotConfigurable(arguments, "0");
+
+  // Postcondition: Arguments mapping is removed.
+  a = 3;
+  propertyDescriptor = Object.getOwnPropertyDescriptor(arguments, "0");
+  assert.sameValue(propertyDescriptor.value, 2);
+  verifyEnumerable(arguments, "0");
+  verifyNotWritable(arguments, "0");
+  verifyNotConfigurable(arguments, "0");
+}
+fn(1);
+
+
+reportCompare(0, 0);

js/src/tests/test262/language/arguments-object/mapped/nonwritable-nonconfigurable-descriptors-basic.js

@@ -0,0 +1,38 @@
+// Copyright (C) 2017 Caio Lima. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+description: Mapped arguments property descriptor change to non-writable and non-configurable
+info: >
+    Mapping stop working when property is set to non-writable. Here we change the
+    descriptor using [[DefineOwnProperty]] to {writable: false} and then
+    change property descriptor to {configurable: false} in sequence.
+    The property descriptor need to be the one set before the property be
+    configured as {writable: false}.
+flags: [noStrict]
+esid: sec-arguments-exotic-objects-defineownproperty-p-desc
+includes: [propertyHelper.js]
+---*/
+
+function fn(a) {
+  Object.defineProperty(arguments, "0", {writable: false});
+  Object.defineProperty(arguments, "0", {configurable: false});
+  let propertyDescriptor = Object.getOwnPropertyDescriptor(arguments, "0");
+  assert.sameValue(propertyDescriptor.value, 1);
+  verifyEnumerable(arguments, "0");
+  verifyNotWritable(arguments, "0");
+  verifyNotConfigurable(arguments, "0");
+
+  // Postcondition: Arguments mapping is removed. Descriptors need to be the same
+  // as above.
+  a = 2;
+  propertyDescriptor = Object.getOwnPropertyDescriptor(arguments, "0");
+  assert.sameValue(propertyDescriptor.value, 1);
+  verifyEnumerable(arguments, "0");
+  verifyNotWritable(arguments, "0");
+  verifyNotConfigurable(arguments, "0");
+}
+fn(1);
+
+
+reportCompare(0, 0);

js/src/tests/test262/language/arguments-object/mapped/nonwritable-nonconfigurable-descriptors-set-by-arguments.js

@@ -0,0 +1,39 @@
+// Copyright (C) 2017 Caio Lima. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+description: Mapped arguments property descriptor change to non-writable and non-configurable
+info: >
+    Mapping stop working when property is set to non-writable. Change the
+    descriptor using [[DefineOwnProperty]] to {writable: false}, set argument[0] = 2 and then
+    change property descriptor to {configurable: false}.
+    The descriptor's value is the one set before the property be
+    configured as {writable: false} because mapping was removed.
+flags: [noStrict]
+esid: sec-arguments-exotic-objects-defineownproperty-p-desc
+includes: [propertyHelper.js]
+---*/
+
+function fn(a) {
+  Object.defineProperty(arguments, "0", {writable: false});
+  arguments[0] = 2;
+  Object.defineProperty(arguments, "0", {configurable: false});
+  let propertyDescriptor = Object.getOwnPropertyDescriptor(arguments, "0");
+  assert.sameValue(propertyDescriptor.value, 1);
+  assert.sameValue(a, 1);
+  verifyEnumerable(arguments, "0");
+  verifyNotWritable(arguments, "0");
+  verifyNotConfigurable(arguments, "0");
+
+  // Postcondition: Arguments mapping is removed.
+  a = 3;
+  propertyDescriptor = Object.getOwnPropertyDescriptor(arguments, "0");
+  assert.sameValue(propertyDescriptor.value, 1);
+  verifyEnumerable(arguments, "0");
+  verifyNotWritable(arguments, "0");
+  verifyNotConfigurable(arguments, "0");
+}
+fn(1);
+
+
+reportCompare(0, 0);

js/src/tests/test262/language/arguments-object/mapped/nonwritable-nonconfigurable-descriptors-set-by-param.js

@@ -0,0 +1,30 @@
+// Copyright (C) 2017 Caio Lima. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+description: Mapped arguments property descriptor change to non-writable and non-configurable
+info: >
+    Mapping just stop working when property is set to non-writable. Change the
+    descriptor using [[DefineOwnProperty]] to {writable: false}, set a = 2 and then
+    change property descriptor to {configurable: false}.
+    The descriptor's value is the one set before the property be
+    configured as {writable: false} because mapping was removed.
+flags: [noStrict]
+esid: sec-arguments-exotic-objects-defineownproperty-p-desc
+includes: [propertyHelper.js]
+---*/
+
+function fn(a) {
+  Object.defineProperty(arguments, "0", {writable: false});
+  a = 2;
+  Object.defineProperty(arguments, "0", {configurable: false});
+  let propertyDescriptor = Object.getOwnPropertyDescriptor(arguments, "0");
+  assert.sameValue(propertyDescriptor.value, 1);
+  verifyEnumerable(arguments, "0");
+  verifyNotWritable(arguments, "0");
+  verifyNotConfigurable(arguments, "0");
+}
+fn(1);
+
+
+reportCompare(0, 0);

js/src/tests/test262/language/arguments-object/mapped/nonwritable-nonenumerable-nonconfigurable-descriptors-basic.js

@@ -0,0 +1,37 @@
+// Copyright (C) 2017 Caio Lima. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+description: Mapped arguments property descriptor change to non-writable and non-configurable
+info: >
+    Change the  descriptor using [[DefineOwnProperty]] to
+    {writable: false, enumerable: false} and then
+    change property descriptor to {configurable: false}.
+    The descriptor's enumerable property continue with its configured value
+    even if mapping stops.
+flags: [noStrict]
+esid: sec-arguments-exotic-objects-defineownproperty-p-desc
+includes: [propertyHelper.js]
+---*/
+
+function fn(a) {
+  Object.defineProperty(arguments, "0", {writable: false, enumerable: false});
+  Object.defineProperty(arguments, "0", {configurable: false});
+
+  let propertyDescriptor = Object.getOwnPropertyDescriptor(arguments, "0");
+  assert.sameValue(propertyDescriptor.value, 1);
+  verifyNotEnumerable(arguments, "0");
+  verifyNotWritable(arguments, "0");
+  verifyNotConfigurable(arguments, "0");
+
+  // Postcondition: Arguments mapping is removed.
+  a = 2;
+  propertyDescriptor = Object.getOwnPropertyDescriptor(arguments, "0");
+  assert.sameValue(propertyDescriptor.value, 1);
+  verifyNotEnumerable(arguments, "0");
+  verifyNotWritable(arguments, "0");
+  verifyNotConfigurable(arguments, "0");
+}
+fn(1);
+
+reportCompare(0, 0);

js/src/tests/test262/language/arguments-object/mapped/nonwritable-nonenumerable-nonconfigurable-descriptors-set-by-arguments.js

@@ -0,0 +1,36 @@
+// Copyright (C) 2017 Caio Lima. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+description: Mapped arguments property descriptor change to non-writable, non-enumerable and non-configurable
+info: >
+    Change the descriptor using [[DefineOwnProperty]] to {writable: false, enumerable: false},
+    set argument[0] = 2 and then change property descriptor to {configurable: false}.
+    The descriptor's enumerable property continues with its configured value.
+flags: [noStrict]
+esid: sec-arguments-exotic-objects-defineownproperty-p-desc
+includes: [propertyHelper.js]
+---*/
+
+function fn(a) {
+  Object.defineProperty(arguments, "0", {writable: false, enumerable: false});
+  arguments[0] = 2;
+  Object.defineProperty(arguments, "0", {configurable: false});
+
+  let propertyDescriptor = Object.getOwnPropertyDescriptor(arguments, "0");
+  assert.sameValue(propertyDescriptor.value, 1);
+  verifyNotEnumerable(arguments, "0");
+  verifyNotWritable(arguments, "0");
+  verifyNotConfigurable(arguments, "0");
+
+  // Postcondition: Arguments mapping is removed.
+  a = 3;
+  propertyDescriptor = Object.getOwnPropertyDescriptor(arguments, "0");
+  assert.sameValue(propertyDescriptor.value, 1);
+  verifyNotEnumerable(arguments, "0");
+  verifyNotWritable(arguments, "0");
+  verifyNotConfigurable(arguments, "0");
+}
+fn(1);
+
+reportCompare(0, 0);

js/src/tests/test262/language/arguments-object/mapped/nonwritable-nonenumerable-nonconfigurable-descriptors-set-by-define-property.js

@@ -0,0 +1,29 @@
+// Copyright (C) 2017 Caio Lima. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+description: Mapped arguments property descriptor change to non-writable, non-enumerable and non-configurable
+info: >
+    Change the  descriptor using [[DefineOwnProperty]] to
+    {writable: false, enumerable: false}, change argument[0]
+    value to 2 using [[DefineOwnProperty]] and then
+    change property descriptor to {configurable: false}.
+    The descriptor's enumerable property continues with its configured value.
+flags: [noStrict]
+esid: sec-arguments-exotic-objects-defineownproperty-p-desc
+includes: [propertyHelper.js]
+---*/
+
+function fn(a) {
+  Object.defineProperty(arguments, "0", {writable: false, enumerable: false, value: 2, configurable: false});
+
+  let propertyDescriptor = Object.getOwnPropertyDescriptor(arguments, "0");
+  assert.sameValue(propertyDescriptor.value, 2);
+  assert.sameValue(arguments[0], 2);
+  verifyNotEnumerable(arguments, "0");
+  verifyNotWritable(arguments, "0");
+  verifyNotConfigurable(arguments, "0");
+}
+fn(1);
+
+reportCompare(0, 0);

js/src/tests/test262/language/arguments-object/mapped/nonwritable-nonenumerable-nonconfigurable-descriptors-set-by-param.js

@@ -0,0 +1,37 @@
+// Copyright (C) 2017 Caio Lima. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+description: Mapped arguments property descriptor change to non-writable, non-enumerable and non-configurable
+info: >
+    Change the descriptor using [[DefineOwnProperty]] to
+    {writable: false, enumerable: false}, set a = 2 and then
+    change property descriptor to {configurable: false}.
+    The descriptor's enumerable property continue with its configured value.
+flags: [noStrict]
+esid: sec-arguments-exotic-objects-defineownproperty-p-desc
+includes: [propertyHelper.js]
+---*/
+
+function fn(a) {
+  Object.defineProperty(arguments, "0", {writable: false, enumerable: false});
+  a = 2;
+  Object.defineProperty(arguments, "0", {configurable: false});
+
+  let propertyDescriptor = Object.getOwnPropertyDescriptor(arguments, "0");
+  assert.sameValue(propertyDescriptor.value, 1);
+  verifyNotEnumerable(arguments, "0");
+  verifyNotWritable(arguments, "0");
+  verifyNotConfigurable(arguments, "0");
+
+  // Postcondition: Arguments mapping is removed.
+  a = 3;
+  propertyDescriptor = Object.getOwnPropertyDescriptor(arguments, "0");
+  assert.sameValue(propertyDescriptor.value, 1);
+  verifyNotEnumerable(arguments, "0");
+  verifyNotWritable(arguments, "0");
+  verifyNotConfigurable(arguments, "0");
+}
+fn(1);
+
+reportCompare(0, 0);

js/src/tests/test262/language/expressions/async-generators/early-errors-expression-NSPL-with-USD-n.js

@@ -0,0 +1,15 @@
+// Copyright 2017 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+author: Caitlin Potter <caitp@igalia.com>
+esid: pending
+description: >
+  It is a Syntax Error if ContainsUseStrict of AsyncGeneratorBody is true and
+  IsSimpleParameterList of UniqueFormalParameters is false.
+negative:
+  phase: early
+  type: SyntaxError
+---*/
+
+(async function*(x = 1) {"use strict"});

js/src/tests/test262/language/expressions/async-generators/early-errors-expression-arguments-in-formal-parameters-strict-n.js

@@ -0,0 +1,16 @@
+'use strict';
+// Copyright 2017 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+author: Caitlin Potter <caitp@igalia.com>
+esid: pending
+description: >
+  It is a SyntaxError if FormalParameters contains arguments in strict mode.
+negative:
+  phase: early
+  type: SyntaxError
+flags: [onlyStrict]
+---*/
+
+(async function*(arguments) { });

js/src/tests/test262/language/expressions/async-generators/early-errors-expression-await-as-function-binding-identifier-n.js

@@ -0,0 +1,14 @@
+// Copyright 2017 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+author: Caitlin Potter <caitp@igalia.com>
+esid: 12.1.1
+description: >
+  `await` is not a valid BindingIdentifier for AsyncGeneratorExpressions.
+negative:
+  phase: early
+  type: SyntaxError
+---*/
+
+(async function* await() { });

js/src/tests/test262/language/expressions/async-generators/early-errors-expression-binding-identifier-arguments-strict-n.js

@@ -0,0 +1,17 @@
+'use strict';
+// Copyright 2017 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+author: Caitlin Potter <caitp@igalia.com>
+esid: pending
+description: >
+  If the source code matching this production is strict code, it is a
+  Syntax Error if BindingIdentifier is the IdentifierName arguments.
+negative:
+  phase: early
+  type: SyntaxError
+flags: [onlyStrict]
+---*/
+
+(async function* arguments() { });

js/src/tests/test262/language/expressions/async-generators/early-errors-expression-binding-identifier-eval-strict-n.js

@@ -0,0 +1,17 @@
+'use strict';
+// Copyright 2017 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+author: Caitlin Potter <caitp@igalia.com>
+esid: pending
+description: >
+  If the source code matching this production is strict code, it is a
+  Syntax Error if BindingIdentifier is the IdentifierName eval.
+negative:
+  phase: early
+  type: SyntaxError
+flags: [onlyStrict]
+---*/
+
+(async function* eval() { });

js/src/tests/test262/language/expressions/async-generators/early-errors-expression-body-contains-super-call-n.js

@@ -0,0 +1,14 @@
+// Copyright 2017 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+author: Caitlin Potter <caitp@igalia.com>
+esid: pending
+description: >
+  It is a syntax error if AsyncGeneratorBody contains SuperCall is true.
+negative:
+  phase: early
+  type: SyntaxError
+---*/
+
+(async function*() { super(); });

js/src/tests/test262/language/expressions/async-generators/early-errors-expression-body-contains-super-property-n.js

@@ -0,0 +1,14 @@
+// Copyright 2017 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+author: Caitlin Potter <caitp@igalia.com>
+esid: pending
+description: >
+  It is a syntax error if AsyncGeneratorBody contains SuperProperty is true.
+negative:
+  phase: early
+  type: SyntaxError
+---*/
+
+(async function*() { super.prop; });

js/src/tests/test262/language/expressions/async-generators/early-errors-expression-eval-in-formal-parameters-strict-n.js

@@ -0,0 +1,16 @@
+'use strict';
+// Copyright 2017 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+author: Caitlin Potter <caitp@igalia.com>
+esid: pending
+description: >
+  It is a SyntaxError if FormalParameters contains eval in strict mode.
+negative:
+  phase: early
+  type: SyntaxError
+flags: [onlyStrict]
+---*/
+
+(async function*(eval) { });

js/src/tests/test262/language/expressions/async-generators/early-errors-expression-formals-body-duplicate-const-n.js

@@ -0,0 +1,15 @@
+// Copyright 2017 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+author: Caitlin Potter <caitp@igalia.com>
+esid: pending
+description: >
+  It is a SyntaxError if BoundNames of FormalParameters also occurs in the
+  LexicallyDeclaredNames of AsyncFunctionBody
+negative:
+  phase: early
+  type: SyntaxError
+---*/
+
+(async function*(a) { const a = 0; });

js/src/tests/test262/language/expressions/async-generators/early-errors-expression-formals-body-duplicate-let-n.js

@@ -0,0 +1,15 @@
+// Copyright 2017 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+author: Caitlin Potter <caitp@igalia.com>
+esid: pending
+description: >
+  It is a SyntaxError if BoundNames of FormalParameters also occurs in the
+  LexicallyDeclaredNames of AsyncFunctionBody
+negative:
+  phase: early
+  type: SyntaxError
+---*/
+
+(async function*(a) { let a; });

js/src/tests/test262/language/expressions/async-generators/early-errors-expression-formals-contains-await-expr-n.js

@@ -0,0 +1,14 @@
+// Copyright 2017 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+author: Caitlin Potter <caitp@igalia.com>
+esid: pending
+description: >
+  It is a Syntax Error if FormalParameters Contains AwaitExpression is true.
+negative:
+  phase: early
+  type: SyntaxError
+---*/
+
+(async function*(x = await 1) { });

js/src/tests/test262/language/expressions/async-generators/early-errors-expression-formals-contains-await-n.js

@@ -0,0 +1,15 @@
+// Copyright 2017 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+author: Caitlin Potter <caitp@igalia.com>
+esid: 12.1
+description: >
+  `await` is a reserved keyword within async generator function bodies and may
+  not be used as the binding identifier of a parameter.
+negative:
+  phase: early
+  type: SyntaxError
+---*/
+
+(async function*(await) { });

js/src/tests/test262/language/expressions/async-generators/early-errors-expression-formals-contains-super-call-n.js

@@ -0,0 +1,14 @@
+// Copyright 2017 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+author: Caitlin Potter <caitp@igalia.com>
+esid: pending
+description: >
+  It is a syntax error if FormalParameters contains SuperCall is true.
+negative:
+  phase: early
+  type: SyntaxError
+---*/
+
+(async function*(a = super()) { });

js/src/tests/test262/language/expressions/async-generators/early-errors-expression-formals-contains-super-property-n.js

@@ -0,0 +1,14 @@
+// Copyright 2017 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+author: Caitlin Potter <caitp@igalia.com>
+esid: pending
+description: >
+  It is a syntax error if FormalParameters contains SuperProperty is true.
+negative:
+  phase: early
+  type: SyntaxError
+---*/
+
+(async function*(a = super.prop) { });

js/src/tests/test262/language/expressions/async-generators/early-errors-expression-formals-contains-yield-expr-n.js

@@ -0,0 +1,14 @@
+// Copyright 2017 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+author: Caitlin Potter <caitp@igalia.com>
+esid: pending
+description: >
+  It is a Syntax Error if FormalParameters Contains YieldExpression is true.
+negative:
+  phase: early
+  type: SyntaxError
+---*/
+
+(async function*(x = yield) { });

js/src/tests/test262/language/expressions/async-generators/early-errors-expression-formals-contains-yield-n.js

@@ -0,0 +1,15 @@
+// Copyright 2017 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+author: Caitlin Potter <caitp@igalia.com>
+esid: 12.1
+description: >
+  `await` is a reserved keyword within async generator function bodies and may
+  not be used as the binding identifier of a parameter.
+negative:
+  phase: early
+  type: SyntaxError
+---*/
+
+(async function*(yield) { });

js/src/tests/test262/language/expressions/async-generators/early-errors-expression-label-name-await-n.js

@@ -0,0 +1,17 @@
+// Copyright 2017 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+author: Caitlin Potter <caitp@igalia.com>
+esid: 12.1.1
+description: >
+  `await` is a reserved keyword within async generator function bodies and may
+  not be used as a label.
+negative:
+  phase: early
+  type: SyntaxError
+---*/
+
+(async function*() {
+  await: 1;
+});

js/src/tests/test262/language/expressions/async-generators/early-errors-expression-label-name-yield-n.js

@@ -0,0 +1,17 @@
+// Copyright 2017 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+author: Caitlin Potter <caitp@igalia.com>
+esid: 12.1.1
+description: >
+  `yield` is a reserved keyword within async generator function bodies and may
+  not be used as a label.
+negative:
+  phase: early
+  type: SyntaxError
+---*/
+
+(async function*() {
+  yield: 1;
+});

js/src/tests/test262/language/expressions/async-generators/early-errors-expression-not-simple-assignment-target-n.js

@@ -0,0 +1,14 @@
+// Copyright 2017 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+author: Caitlin Potter <caitp@igalia.com>
+esid: pending
+description: >
+  Async generator function expressions are not a simple assignment target.
+negative:
+  phase: early
+  type: ReferenceError
+---*/
+
+(async function*() { } = 1);

js/src/tests/test262/language/expressions/async-generators/early-errors-expression-yield-as-function-binding-identifier-n.js

@@ -0,0 +1,14 @@
+// Copyright 2017 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+author: Caitlin Potter <caitp@igalia.com>
+esid: 12.1.1
+description: >
+  `yield` is not a valid BindingIdentifier for AsyncGeneratorExpressions.
+negative:
+  phase: early
+  type: SyntaxError
+---*/
+
+(async function* yield() { });

js/src/tests/test262/language/expressions/async-generators/early-errors-expression-yield-star-after-newline-n.js

@@ -0,0 +1,17 @@
+// Copyright 2017 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+author: Caitlin Potter <caitp@igalia.com>
+esid: 14.4
+description: >
+  A newline may not precede the `*` token in a `yield` expression.
+negative:
+  phase: early
+  type: SyntaxError
+---*/
+
+(async function*() {
+  yield
+  * 1;
+});

js/src/tests/test262/language/expressions/async-generators/expression-await-as-yield-operand.js

@@ -0,0 +1,24 @@
+// Copyright 2017 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+author: Caitlin Potter <caitp@igalia.com>
+esid: 14.4
+description: >
+  AwaitExpressions are valid operands to yield expressions.
+flags: [async]
+---*/
+
+var iter = (async function*() {
+  yield await "a";
+})();
+
+iter.next().then(function(result) {
+  assert.sameValue(result.value, "a", 'First result `value`');
+  assert.sameValue(result.done, false, 'First result `done` flag');
+}).then(undefined, $DONE);
+
+iter.next().then(function(result) {
+  assert.sameValue(result.value, undefined, 'Second result `value`');
+  assert.sameValue(result.done, true, 'Second result `done` flag');
+}).then($DONE, $DONE);

js/src/tests/test262/language/expressions/async-generators/expression-await-promise-as-yield-operand.js

@@ -0,0 +1,26 @@
+// Copyright 2017 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+author: Caitlin Potter <caitp@igalia.com>
+esid: 14.4
+description: >
+  AwaitExpressions are valid operands to yield expressions.
+flags: [async]
+---*/
+
+var iter = (async function*() {
+  yield await new Promise(function(resolve) {
+    resolve("a");
+  });
+})();
+
+iter.next().then(function(result) {
+  assert.sameValue(result.value, "a", 'First result `value`');
+  assert.sameValue(result.done, false, 'First result `done` flag');
+}).then(undefined, $DONE);
+
+iter.next().then(function(result) {
+  assert.sameValue(result.value, undefined, 'Second result `value`');
+  assert.sameValue(result.done, true, 'Second result `done` flag');
+}).then($DONE, $DONE);

js/src/tests/test262/language/expressions/async-generators/expression-await-thenable-as-yield-operand.js

@@ -0,0 +1,30 @@
+// Copyright 2017 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+author: Caitlin Potter <caitp@igalia.com>
+esid: 14.4
+description: >
+  AwaitExpressions are valid operands to yield expressions.
+flags: [async]
+---*/
+
+var thenable = {
+  then: function(resolve, reject) {
+    resolve("a");
+  }
+};
+
+var iter = (async function*() {
+  yield await thenable;
+})();
+
+iter.next().then(function(result) {
+  assert.sameValue(result.value, "a", 'First result `value`');
+  assert.sameValue(result.done, false, 'First result `done` flag');
+}).then(undefined, $DONE);
+
+iter.next().then(function(result) {
+  assert.sameValue(result.value, undefined, 'Second result `value`');
+  assert.sameValue(result.done, true, 'Second result `done` flag');
+}).then($DONE, $DONE);

js/src/tests/test262/language/expressions/async-generators/expression-yield-as-operand.js

@@ -0,0 +1,31 @@
+// Copyright 2017 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+author: Caitlin Potter <caitp@igalia.com>
+esid: 14.4
+description: >
+  `yield` expressions may be used as the right-hand-side of other `yield`
+  expressions.
+flags: [async]
+---*/
+
+var g = async function*() {
+  yield yield 1;
+};
+
+var iter = g();
+iter.next().then(function(result) {
+  assert.sameValue(result.value, 1, 'First result `value`');
+  assert.sameValue(result.done, false, 'First result `done` flag');
+}).then(undefined, $DONE);
+
+iter.next().then(function(result) {
+  assert.sameValue(result.value, undefined, 'Second result `value`');
+  assert.sameValue(result.done, false, 'Second result `done` flag');
+}).then(undefined, $DONE);
+
+iter.next().then(function(result) {
+  assert.sameValue(result.value, undefined, 'Third result `value`');
+  assert.sameValue(result.done, true, 'Thid result `done` flag');
+}).then($DONE, $DONE);

js/src/tests/test262/language/expressions/async-generators/expression-yield-as-statement.js

@@ -0,0 +1,41 @@
+// Copyright 2017 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+author: Caitlin Potter <caitp@igalia.com>
+esid: 14.4
+description: >
+  `yield` is a valid statement within async generator function bodies.
+flags: [async]
+---*/
+
+var g1 = async function*() { yield; };
+var g2 = async function*() { yield 1; };
+
+var iter1 = g1();
+iter1.next().then(function(result) {
+  assert.sameValue(
+    result.value, undefined, "Without right-hand-side: first result `value`");
+  assert.sameValue(
+    result.done, false, "Without right-hand-side: first result `done` flag");
+}).then(undefined, $DONE);
+iter1.next(function(result) {
+  assert.sameValue(
+    result.value, undefined, "Without right-hand-side: second result `value`");
+  assert.sameValue(
+    result.done, true, "Without right-hand-side: second result `done` flag");
+}).then(undefined, $DONE);
+
+var iter2 = g2();
+iter2.next().then(function(result) {
+  assert.sameValue(
+    result.value, 1, "With right-hand-side: first result `value`");
+  assert.sameValue(
+    result.done, false, "With right-hand-side: first result `done` flag");
+}).then(undefined, $DONE);
+iter2.next(function(result) {
+  assert.sameValue(
+    result.value, undefined, "With right-hand-side: second result `value`");
+  assert.sameValue(
+    result.done, true, "With right-hand-side: second result `done` flag");
+}).then($DONE, $DONE);

js/src/tests/test262/language/expressions/async-generators/expression-yield-newline.js

@@ -0,0 +1,26 @@
+// Copyright 2017 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+author: Caitlin Potter <caitp@igalia.com>
+esid: 14.4
+description: >
+  Newlines terminate `yield` expressions.
+flags: [async]
+---*/
+
+var g = async function*() {
+  yield
+  1;
+};
+
+var iter = g();
+iter.next().then(function(result) {
+  assert.sameValue(result.value, undefined, 'First result `value`');
+  assert.sameValue(result.done, false, 'First result `done` flag');
+}).then(undefined, $DONE);
+
+iter.next().then(function(result) {
+  assert.sameValue(result.value, undefined, 'Second result `value`');
+  assert.sameValue(result.done, true, 'Second result `done` flag');
+}).then($DONE, $DONE);

js/src/tests/test262/language/expressions/async-generators/expression-yield-star-before-newline.js

@@ -0,0 +1,20 @@
+// Copyright 2017 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+author: Caitlin Potter <caitp@igalia.com>
+esid: 14.4
+description: >
+  The right-hand side of a `yield *` expression may appear on a new line.
+flags: [async]
+---*/
+
+var g = async function*() {};
+
+(async function*() {
+  yield*
+  g();
+})().next().then(function(result) {
+  assert.sameValue(result.value, undefined);
+  assert.sameValue(result.done, true);
+}).then($DONE, $DONE);