Adding upstream version 124.0.1.upstream/124.0.1

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

65 files changed, 2928 insertions, 0 deletions

diff --git a/js/src/tests/test262/intl402/DisplayNames/browser.js b/js/src/tests/test262/intl402/DisplayNames/browser.js
new file mode 100644
index 0000000000..e69de29bb2
--- /dev/null
+++ b/js/src/tests/test262/intl402/DisplayNames/browser.js
diff --git a/js/src/tests/test262/intl402/DisplayNames/ctor-custom-get-prototype-poison-throws.js b/js/src/tests/test262/intl402/DisplayNames/ctor-custom-get-prototype-poison-throws.js
new file mode 100644
index 0000000000..cb68a161ba
--- /dev/null
+++ b/js/src/tests/test262/intl402/DisplayNames/ctor-custom-get-prototype-poison-throws.js
@@ -0,0 +1,46 @@
+// Copyright (C) 2019 Leo Balter. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+esid: sec-Intl.DisplayNames
+description: >
+  Return abrupt from Get Prototype from a custom NewTarget
+info: |
+  Intl.DisplayNames ([ locales [ , options ]])
+
+  1. If NewTarget is undefined, throw a TypeError exception.
+  2. Let displayNames be ? OrdinaryCreateFromConstructor(NewTarget, "%DisplayNamesPrototype%",
+    « [[InitializedDisplayNames]], [[Locale]], [[Style]], [[Type]], [[Fallback]], [[Fields]] »).
+  ...
+
+  OrdinaryCreateFromConstructor ( constructor, intrinsicDefaultProto [ , internalSlotsList ] )
+
+  ...
+  2. Let proto be ? GetPrototypeFromConstructor(constructor, intrinsicDefaultProto).
+  ...
+
+  GetPrototypeFromConstructor ( constructor, intrinsicDefaultProto )
+
+  3. Let proto be ? Get(constructor, "prototype").
+  4. If Type(proto) is not Object, then
+    a. Let realm be ? GetFunctionRealm(constructor).
+    b. Set proto to realm's intrinsic object named intrinsicDefaultProto.
+  5. Return proto.
+features: [Intl.DisplayNames, Reflect, Proxy]
+---*/
+
+var custom = new Proxy(new Function(), {
+  get(target, key) {
+    if (key === 'prototype') {
+      throw new Test262Error();
+    }
+
+    return target[key];
+  }
+});
+
+assert.throws(Test262Error, () => {
+  Reflect.construct(Intl.DisplayNames, [], custom);
+});
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/intl402/DisplayNames/ctor-custom-prototype.js b/js/src/tests/test262/intl402/DisplayNames/ctor-custom-prototype.js
new file mode 100644
index 0000000000..7ee1e0d702
--- /dev/null
+++ b/js/src/tests/test262/intl402/DisplayNames/ctor-custom-prototype.js
@@ -0,0 +1,42 @@
+// Copyright (C) 2019 Leo Balter. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+esid: sec-Intl.DisplayNames
+description: >
+  Custom Prototype of the returned object based on the NewTarget
+info: |
+  Intl.DisplayNames ( locales , options )
+
+  1. If NewTarget is undefined, throw a TypeError exception.
+  2. Let displayNames be ? OrdinaryCreateFromConstructor(NewTarget, "%DisplayNamesPrototype%",
+    « [[InitializedDisplayNames]], [[Locale]], [[Style]], [[Type]], [[Fallback]], [[Fields]] »).
+  ...
+  12. Let type be ? GetOption(options, "type", "string", « "language", "region", "script", "currency" », undefined).
+  13. If type is undefined, throw a TypeError exception.
+  ...
+
+  OrdinaryCreateFromConstructor ( constructor, intrinsicDefaultProto [ , internalSlotsList ] )
+
+  ...
+  2. Let proto be ? GetPrototypeFromConstructor(constructor, intrinsicDefaultProto).
+  ...
+
+  GetPrototypeFromConstructor ( constructor, intrinsicDefaultProto )
+
+  3. Let proto be ? Get(constructor, "prototype").
+  4. If Type(proto) is not Object, then
+    a. Let realm be ? GetFunctionRealm(constructor).
+    b. Set proto to realm's intrinsic object named intrinsicDefaultProto.
+  5. Return proto.
+features: [Intl.DisplayNames, Reflect]
+---*/
+
+var custom = new Function();
+custom.prototype = {};
+
+const obj = Reflect.construct(Intl.DisplayNames, [undefined, {type: 'language'}], custom);
+
+assert.sameValue(Object.getPrototypeOf(obj), custom.prototype);
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/intl402/DisplayNames/ctor-default-prototype.js b/js/src/tests/test262/intl402/DisplayNames/ctor-default-prototype.js
new file mode 100644
index 0000000000..cce416f9ff
--- /dev/null
+++ b/js/src/tests/test262/intl402/DisplayNames/ctor-default-prototype.js
@@ -0,0 +1,26 @@
+// Copyright (C) 2019 Leo Balter. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+esid: sec-Intl.DisplayNames
+description: >
+  Prototype of the returned object is DisplayNames.prototype
+info: |
+  Intl.DisplayNames ( locales , options )
+
+  1. If NewTarget is undefined, throw a TypeError exception.
+  2. Let displayNames be ? OrdinaryCreateFromConstructor(NewTarget, "%DisplayNamesPrototype%",
+    « [[InitializedDisplayNames]], [[Locale]], [[Style]], [[Type]], [[Fallback]], [[Fields]] »).
+  ...
+  12. Let type be ? GetOption(options, "type", "string", « "language", "region", "script", "currency" », undefined).
+  13. If type is undefined, throw a TypeError exception.
+  ...
+  27. Return displayNames.
+features: [Intl.DisplayNames]
+---*/
+
+var obj = new Intl.DisplayNames(undefined, {type: 'language'});
+
+assert.sameValue(Object.getPrototypeOf(obj), Intl.DisplayNames.prototype);
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/intl402/DisplayNames/instance-extensible.js b/js/src/tests/test262/intl402/DisplayNames/instance-extensible.js
new file mode 100644
index 0000000000..93d002091f
--- /dev/null
+++ b/js/src/tests/test262/intl402/DisplayNames/instance-extensible.js
@@ -0,0 +1,40 @@
+// Copyright (C) 2019 Leo Balter. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+esid: sec-Intl.DisplayNames
+description: >
+  Instance is extensible
+info: |
+  Intl.DisplayNames ( locales , options )
+
+  1. If NewTarget is undefined, throw a TypeError exception.
+  2. Let displayNames be ? OrdinaryCreateFromConstructor(NewTarget, "%DisplayNamesPrototype%",
+    « [[InitializedDisplayNames]], [[Locale]], [[Style]], [[Type]], [[Fallback]], [[Fields]] »).
+  ...
+  12. Let type be ? GetOption(options, "type", "string", « "language", "region", "script", "currency" », undefined).
+  13. If type is undefined, throw a TypeError exception.
+  ...
+
+  OrdinaryCreateFromConstructor ( constructor, intrinsicDefaultProto [ , internalSlotsList ] )
+
+  ...
+  2. Let proto be ? GetPrototypeFromConstructor(constructor, intrinsicDefaultProto).
+  3. Return ObjectCreate(proto, internalSlotsList).
+
+  ObjectCreate ( proto [ , internalSlotsList ] )
+
+  ...
+  2. Let obj be a newly created object with an internal slot for each name in internalSlotsList.
+  3. Set obj's essential internal methods to the default ordinary object definitions specified in 9.1.
+  4. Set obj.[[Prototype]] to proto.
+  5. Set obj.[[Extensible]] to true.
+  6. Return obj.
+features: [Intl.DisplayNames]
+---*/
+
+var obj = new Intl.DisplayNames(undefined, {type: 'language'});
+
+assert(Object.isExtensible(obj));
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/intl402/DisplayNames/length.js b/js/src/tests/test262/intl402/DisplayNames/length.js
new file mode 100644
index 0000000000..2e8c435bd9
--- /dev/null
+++ b/js/src/tests/test262/intl402/DisplayNames/length.js
@@ -0,0 +1,33 @@
+// Copyright (C) 2019 Leo Balter. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+esid: sec-Intl.DisplayNames
+description: >
+  Intl.DisplayNames.length is 2.
+info: |
+  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. Optional parameters
+  (which are indicated with brackets: [ ]) or rest parameters (which
+  are 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]
+features: [Intl.DisplayNames]
+---*/
+
+verifyProperty(Intl.DisplayNames, "length", {
+  value: 2,
+  enumerable: false,
+  writable: false,
+  configurable: true,
+});
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/intl402/DisplayNames/locales-invalid-throws.js b/js/src/tests/test262/intl402/DisplayNames/locales-invalid-throws.js
new file mode 100644
index 0000000000..70bc899905
--- /dev/null
+++ b/js/src/tests/test262/intl402/DisplayNames/locales-invalid-throws.js
@@ -0,0 +1,34 @@
+// Copyright (C) 2019 Leo Balter. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+esid: sec-Intl.DisplayNames
+description: >
+  Throws TypeError if locales is not undefined, a string, or an array-like object.
+info: |
+  Intl.DisplayNames ([ locales [ , options ]])
+
+  1. If NewTarget is undefined, throw a TypeError exception.
+  2. Let displayNames be ? OrdinaryCreateFromConstructor(NewTarget, "%DisplayNamesPrototype%",
+    « [[InitializedDisplayNames]], [[Locale]], [[Style]], [[Type]], [[Fallback]], [[Fields]] »).
+  3. Let requestedLocales be ? CanonicalizeLocaleList(locales).
+  ...
+
+  CanonicalizeLocaleList ( locales )
+
+  1. If locales is undefined, then
+    a. Return a new empty List.
+  2. Let seen be a new empty List.
+  3. If Type(locales) is String, then
+    a. Let O be CreateArrayFromList(« locales »).
+  4. Else,
+    a. Let O be ? ToObject(locales).
+  5. Let len be ? ToLength(? Get(O, "length")).
+features: [Intl.DisplayNames]
+---*/
+
+assert.throws(TypeError, () => {
+  new Intl.DisplayNames(null);
+}, 'null');
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/intl402/DisplayNames/locales-length-poison-throws.js b/js/src/tests/test262/intl402/DisplayNames/locales-length-poison-throws.js
new file mode 100644
index 0000000000..5469678ecc
--- /dev/null
+++ b/js/src/tests/test262/intl402/DisplayNames/locales-length-poison-throws.js
@@ -0,0 +1,42 @@
+// Copyright (C) 2019 Leo Balter. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+esid: sec-Intl.DisplayNames
+description: >
+  Return abrupt completion from Get Locales length
+info: |
+  Intl.DisplayNames ([ locales [ , options ]])
+
+  1. If NewTarget is undefined, throw a TypeError exception.
+  2. Let displayNames be ? OrdinaryCreateFromConstructor(NewTarget, "%DisplayNamesPrototype%",
+    « [[InitializedDisplayNames]], [[Locale]], [[Style]], [[Type]], [[Fallback]], [[Fields]] »).
+  3. Let requestedLocales be ? CanonicalizeLocaleList(locales).
+  ...
+
+  CanonicalizeLocaleList ( locales )
+
+  1. If locales is undefined, then
+    a. Return a new empty List.
+  2. Let seen be a new empty List.
+  3. If Type(locales) is String, then
+    a. Let O be CreateArrayFromList(« locales »).
+  4. Else,
+    a. Let O be ? ToObject(locales).
+  5. Let len be ? ToLength(? Get(O, "length")).
+features: [Intl.DisplayNames]
+---*/
+
+var locales = {};
+
+Object.defineProperty(locales, 'length', {
+  get() {
+    throw new Test262Error();
+  }
+});
+
+assert.throws(Test262Error, () => {
+  new Intl.DisplayNames(locales);
+});
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/intl402/DisplayNames/locales-length-tolength-throws.js b/js/src/tests/test262/intl402/DisplayNames/locales-length-tolength-throws.js
new file mode 100644
index 0000000000..a9c8b3e1e0
--- /dev/null
+++ b/js/src/tests/test262/intl402/DisplayNames/locales-length-tolength-throws.js
@@ -0,0 +1,75 @@
+// Copyright (C) 2019 Leo Balter. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+esid: sec-Intl.DisplayNames
+description: >
+  Return abrupt completion from Locales invalid length
+info: |
+  Intl.DisplayNames ([ locales [ , options ]])
+
+  1. If NewTarget is undefined, throw a TypeError exception.
+  2. Let displayNames be ? OrdinaryCreateFromConstructor(NewTarget, "%DisplayNamesPrototype%",
+    « [[InitializedDisplayNames]], [[Locale]], [[Style]], [[Type]], [[Fallback]], [[Fields]] »).
+  3. Let requestedLocales be ? CanonicalizeLocaleList(locales).
+  ...
+
+  CanonicalizeLocaleList ( locales )
+
+  1. If locales is undefined, then
+    a. Return a new empty List.
+  2. Let seen be a new empty List.
+  3. If Type(locales) is String, then
+    a. Let O be CreateArrayFromList(« locales »).
+  4. Else,
+    a. Let O be ? ToObject(locales).
+  5. Let len be ? ToLength(? Get(O, "length")).
+
+  ToLength ( argument )
+
+  1. Let len be ? ToInteger(argument).
+  ...
+features: [Intl.DisplayNames, Symbol, BigInt]
+---*/
+
+var locales = {
+  length: {
+    valueOf() {
+      throw new Test262Error();
+    }
+  }
+};
+
+assert.throws(Test262Error, () => {
+  new Intl.DisplayNames(locales);
+}, 'poisoned valueOf for ToNumber');
+
+locales.length = {
+  [Symbol.toPrimitive]() {
+    throw new Test262Error();
+  }
+};
+assert.throws(Test262Error, () => {
+  new Intl.DisplayNames(locales);
+}, 'poisoned ToPrimitive for ToNumber');
+
+locales.length = {
+  toString() {
+    throw new Test262Error();
+  }
+};
+assert.throws(Test262Error, () => {
+  new Intl.DisplayNames(locales);
+}, 'poisoned toString for ToNumber');
+
+locales.length = Symbol();
+assert.throws(TypeError, () => {
+  new Intl.DisplayNames(locales);
+}, 'length is Symbol');
+
+locales.length = BigInt(1);
+assert.throws(TypeError, () => {
+  new Intl.DisplayNames(locales);
+}, 'length is BigInt');
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/intl402/DisplayNames/locales-symbol-length.js b/js/src/tests/test262/intl402/DisplayNames/locales-symbol-length.js
new file mode 100644
index 0000000000..53f07eca22
--- /dev/null
+++ b/js/src/tests/test262/intl402/DisplayNames/locales-symbol-length.js
@@ -0,0 +1,64 @@
+// Copyright (C) 2019 Leo Balter. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+esid: sec-Intl.DisplayNames
+description: >
+  CanonicalizeLocaleList tries to fetch length from Object.
+info: |
+  Intl.DisplayNames ( locales , options )
+
+  1. If NewTarget is undefined, throw a TypeError exception.
+  2. Let displayNames be ? OrdinaryCreateFromConstructor(NewTarget, "%DisplayNamesPrototype%",
+    « [[InitializedDisplayNames]], [[Locale]], [[Style]], [[Type]], [[Fallback]], [[Fields]] »).
+  3. Let requestedLocales be ? CanonicalizeLocaleList(locales).
+  ...
+  12. Let type be ? GetOption(options, "type", "string", « "language", "region", "script", "currency" », undefined).
+  13. If type is undefined, throw a TypeError exception.
+  ...
+
+  CanonicalizeLocaleList ( locales )
+
+  1. If locales is undefined, then
+    a. Return a new empty List.
+  2. Let seen be a new empty List.
+  3. If Type(locales) is String, then
+    a. Let O be CreateArrayFromList(« locales »).
+  4. Else,
+    a. Let O be ? ToObject(locales).
+  5. Let len be ? ToLength(? Get(O, "length")).
+features: [Intl.DisplayNames, Symbol]
+locale: [en]
+includes: [compareArray.js]
+---*/
+
+let calls = [];
+let symbol = Symbol();
+
+Symbol.prototype.length = 1;
+
+Object.defineProperty(Symbol.prototype, 'length', {
+  get() {
+    assert.notSameValue(this, symbol, 'this is an object from given symbol');
+    assert.sameValue(this.valueOf(), symbol, 'internal value is the symbol');
+    assert(this instanceof Symbol);
+    calls.push('length');
+    return 1;
+  }
+});
+
+Object.defineProperty(Symbol.prototype, '0', {
+  get() {
+    assert.notSameValue(this, symbol, 'this is an object from given symbol');
+    assert.sameValue(this.valueOf(), symbol, 'internal value is the symbol');
+    assert(this instanceof Symbol);
+    calls.push('0');
+    return 'en';
+  }
+});
+
+new Intl.DisplayNames(symbol, {type: 'language'});
+
+assert.compareArray(calls, ['length', '0']);
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/intl402/DisplayNames/name.js b/js/src/tests/test262/intl402/DisplayNames/name.js
new file mode 100644
index 0000000000..6cfaf9855f
--- /dev/null
+++ b/js/src/tests/test262/intl402/DisplayNames/name.js
@@ -0,0 +1,29 @@
+// Copyright (C) 2019 Leo Balter. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+esid: sec-Intl.DisplayNames
+description: >
+  Intl.DisplayNames.name is "DisplayNames".
+info: |
+  17 ECMAScript Standard Built-in Objects:
+
+  Every built-in Function object, including constructors, that is not
+  identified as an anonymous function has a name property whose value is a
+  String.
+
+  Unless otherwise specified, the name property of a built-in Function object,
+  if it exists, has the attributes { [[Writable]]: false, [[Enumerable]]:
+  false, [[Configurable]]: true }.
+includes: [propertyHelper.js]
+features: [Intl.DisplayNames]
+---*/
+
+verifyProperty(Intl.DisplayNames, "name", {
+  value: "DisplayNames",
+  writable: false,
+  enumerable: false,
+  configurable: true,
+});
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/intl402/DisplayNames/options-fallback-abrupt-throws.js b/js/src/tests/test262/intl402/DisplayNames/options-fallback-abrupt-throws.js
new file mode 100644
index 0000000000..6a798c142f
--- /dev/null
+++ b/js/src/tests/test262/intl402/DisplayNames/options-fallback-abrupt-throws.js
@@ -0,0 +1,40 @@
+// Copyright (C) 2019 Leo Balter. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+esid: sec-Intl.DisplayNames
+description: >
+  Return abrupt completion from GetOption fallback
+info: |
+  Intl.DisplayNames ( locales , options )
+
+  1. If NewTarget is undefined, throw a TypeError exception.
+  2. Let displayNames be ? OrdinaryCreateFromConstructor(NewTarget, "%DisplayNamesPrototype%",
+    « [[InitializedDisplayNames]], [[Locale]], [[Style]], [[Type]], [[Fallback]], [[Fields]] »).
+  ...
+  4. Let options be ? ToObject(options).
+  ...
+  12. Let type be ? GetOption(options, "type", "string", « "language", "region", "script", "currency" », undefined).
+  13. If type is undefined, throw a TypeError exception.
+  ...
+  15. Let fallback be ? GetOption(options, "fallback", "string", « "code", "none" », "code").
+  ...
+
+  GetOption ( options, property, type, values, fallback )
+
+  1. Let value be ? Get(options, property).
+  ...
+features: [Intl.DisplayNames]
+locale: [en]
+---*/
+
+var options = { type: 'language' };
+Object.defineProperty(options, 'fallback', {
+  get() { throw new Test262Error(); },
+});
+
+assert.throws(Test262Error, () => {
+  new Intl.DisplayNames('en', options);
+});
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/intl402/DisplayNames/options-fallback-invalid-throws.js b/js/src/tests/test262/intl402/DisplayNames/options-fallback-invalid-throws.js
new file mode 100644
index 0000000000..c1d6c5ae21
--- /dev/null
+++ b/js/src/tests/test262/intl402/DisplayNames/options-fallback-invalid-throws.js
@@ -0,0 +1,59 @@
+// Copyright (C) 2019 Leo Balter. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+esid: sec-Intl.DisplayNames
+description: >
+  Return abrupt completion from an invalid fallback option
+info: |
+  Intl.DisplayNames ( locales , options )
+
+  1. If NewTarget is undefined, throw a TypeError exception.
+  2. Let displayNames be ? OrdinaryCreateFromConstructor(NewTarget, "%DisplayNamesPrototype%",
+    « [[InitializedDisplayNames]], [[Locale]], [[Style]], [[Type]], [[Fallback]], [[Fields]] »).
+  ...
+  4. Let options be ? ToObject(options).
+  ...
+  8. Let matcher be ? GetOption(options, "localeMatcher", "string", « "lookup", "best fit" », "best fit").
+  ...
+  12. Let type be ? GetOption(options, "type", "string", « "language", "region", "script", "currency" », "language").
+  13. If type is undefined, throw a TypeError exception.
+  ...
+  15. Let fallback be ? GetOption(options, "fallback", "string", « "code", "none" », "code").
+  ...
+
+  GetOption ( options, property, type, values, fallback )
+
+  1. Let value be ? Get(options, property).
+  2. If value is not undefined, then
+    ...
+    c. If type is "string", then
+      i. Let value be ? ToString(value).
+    d. If values is not undefined, then
+      i. If values does not contain an element equal to value, throw a RangeError exception.
+  ...
+features: [Intl.DisplayNames]
+locale: [en]
+---*/
+
+assert.throws(RangeError, () => {
+  new Intl.DisplayNames('en', {fallback: 'err', type: 'language'});
+}, 'err');
+
+assert.throws(RangeError, () => {
+  new Intl.DisplayNames('en', {fallback: 'non', type: 'language'});
+}, 'non, not none');
+
+assert.throws(RangeError, () => {
+  new Intl.DisplayNames('en', {fallback: null, type: 'language'});
+}, 'null');
+
+assert.throws(RangeError, () => {
+  new Intl.DisplayNames('en', {fallback: '', type: 'language'});
+}, 'the empty string');
+
+assert.throws(RangeError, () => {
+  new Intl.DisplayNames('en', {fallback: ['code', 'none'], type: 'language'});
+}, 'an array with the valid options is not necessarily valid');
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/intl402/DisplayNames/options-fallback-toString-abrupt-throws.js b/js/src/tests/test262/intl402/DisplayNames/options-fallback-toString-abrupt-throws.js
new file mode 100644
index 0000000000..231117aee4
--- /dev/null
+++ b/js/src/tests/test262/intl402/DisplayNames/options-fallback-toString-abrupt-throws.js
@@ -0,0 +1,59 @@
+// Copyright (C) 2019 Leo Balter. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+esid: sec-Intl.DisplayNames
+description: >
+  Return abrupt completion from GetOption fallback
+info: |
+  Intl.DisplayNames ( locales , options )
+
+  1. If NewTarget is undefined, throw a TypeError exception.
+  2. Let displayNames be ? OrdinaryCreateFromConstructor(NewTarget, "%DisplayNamesPrototype%",
+    « [[InitializedDisplayNames]], [[Locale]], [[Style]], [[Type]], [[Fallback]], [[Fields]] »).
+  ...
+  4. Let options be ? ToObject(options).
+  ...
+  8. Let matcher be ? GetOption(options, "localeMatcher", "string", « "lookup", "best fit" », "best fit").
+  ...
+  10. Let style be ? GetOption(options, "style", "string", « "narrow", "short", "long" », "long").
+  ...
+  12. Let type be ? GetOption(options, "type", "string", « "language", "region", "script", "currency" », undefined).
+  13. If type is undefined, throw a TypeError exception.
+
+  GetOption ( options, property, type, values, fallback )
+
+  1. Let value be ? Get(options, property).
+  ...
+features: [Intl.DisplayNames, Symbol]
+locale: [en]
+---*/
+
+assert.throws(Test262Error, () => {
+  new Intl.DisplayNames('en', {
+    type: 'language', fallback: { toString() { throw new Test262Error(); }}
+  });
+}, 'from toString');
+
+assert.throws(Test262Error, () => {
+  new Intl.DisplayNames('en', {
+    type: 'language',
+    fallback: {toString: undefined, valueOf() {throw new Test262Error(); }}
+  });
+}, 'from valueOf');
+
+assert.throws(Test262Error, () => {
+  new Intl.DisplayNames('en', {
+    type: 'language',
+    fallback: { [Symbol.toPrimitive]() { throw new Test262Error(); } }
+  });
+}, 'from ToPrimitive');
+
+assert.throws(TypeError, () => {
+  new Intl.DisplayNames('en', {
+    type: 'language',
+    fallback: Symbol()
+  });
+}, 'symbol value');
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/intl402/DisplayNames/options-fallback-valid.js b/js/src/tests/test262/intl402/DisplayNames/options-fallback-valid.js
new file mode 100644
index 0000000000..b97245a3d2
--- /dev/null
+++ b/js/src/tests/test262/intl402/DisplayNames/options-fallback-valid.js
@@ -0,0 +1,50 @@
+// Copyright (C) 2019 Leo Balter. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+esid: sec-Intl.DisplayNames
+description: >
+  Valid options for fallback
+info: |
+  Intl.DisplayNames ( locales , options )
+
+  1. If NewTarget is undefined, throw a TypeError exception.
+  2. Let displayNames be ? OrdinaryCreateFromConstructor(NewTarget, "%DisplayNamesPrototype%",
+    « [[InitializedDisplayNames]], [[Locale]], [[Style]], [[Type]], [[Fallback]], [[Fields]] »).
+  ...
+  4. Let options be ? ToObject(options).
+  ...
+  8. Let matcher be ? GetOption(options, "localeMatcher", "string", « "lookup", "best fit" », "best fit").
+  ...
+  10. Let style be ? GetOption(options, "style", "string", « "narrow", "short", "long" », "long").
+  ...
+  12. Let type be ? GetOption(options, "type", "string", « "language", "region", "script", "currency" », undefined).
+  13. If type is undefined, throw a TypeError exception.
+  ...
+  15. Let fallback be ? GetOption(options, "fallback", "string", « "code", "none" », "code").
+  ...
+
+  GetOption ( options, property, type, values, fallback )
+
+  1. Let value be ? Get(options, property).
+  ...
+features: [Intl.DisplayNames]
+locale: [en]
+---*/
+
+// results for option values verified in the tests for resolvedOptions
+
+const fallbacks = [
+  undefined,
+  'code',
+  'none'
+];
+
+fallbacks.forEach(fallback => {
+  const obj = new Intl.DisplayNames('en', { fallback, type: 'language'});
+
+  assert(obj instanceof Intl.DisplayNames, `instanceof check - ${fallback}`);
+  assert.sameValue(Object.getPrototypeOf(obj), Intl.DisplayNames.prototype, `proto check - ${fallback}`);
+});
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/intl402/DisplayNames/options-getoptionsobject.js b/js/src/tests/test262/intl402/DisplayNames/options-getoptionsobject.js
new file mode 100644
index 0000000000..a8046db499
--- /dev/null
+++ b/js/src/tests/test262/intl402/DisplayNames/options-getoptionsobject.js
@@ -0,0 +1,26 @@
+// Copyright 2021 Google Inc.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+esid: sec-Intl.DisplayNames
+description: Checks handling of non-object option arguments to the DisplayNames constructor.
+info: |
+    Intl.DisplayNames ( locales, options )
+features: [Intl.DisplayNames,BigInt]
+---*/
+
+const optionsArguments = [
+  null,
+  true,
+  false,
+  "test",
+  7,
+  Symbol(),
+  123456789n,
+];
+
+for (const options of optionsArguments) {
+  assert.throws(TypeError, function() { new Intl.DisplayNames([], options) })
+}
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/intl402/DisplayNames/options-languagedisplay-abrupt-throws.js b/js/src/tests/test262/intl402/DisplayNames/options-languagedisplay-abrupt-throws.js
new file mode 100644
index 0000000000..4c4604fd9e
--- /dev/null
+++ b/js/src/tests/test262/intl402/DisplayNames/options-languagedisplay-abrupt-throws.js
@@ -0,0 +1,39 @@
+// Copyright (C) 2021 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+esid: sec-Intl.DisplayNames
+description: Return abrupt completion from GetOption fallback
+info: |
+  Intl.DisplayNames ( locales , options )
+
+  1. If NewTarget is undefined, throw a TypeError exception.
+  2. Let displayNames be ? OrdinaryCreateFromConstructor(NewTarget, "%DisplayNamesPrototype%",
+    « [[InitializedDisplayNames]], [[Locale]], [[Style]], [[Type]], [[Fallback]], [[Fields]] »).
+  ...
+  4. Let options be ? ToObject(options).
+  ...
+  12. Let type be ? GetOption(options, "type", "string", « "language", "region", "script", "currency" », undefined).
+  13. If type is undefined, throw a TypeError exception.
+  ...
+  24. Let languageDisplay be ? GetOption(options, "languageDisplay", "string", « "dialect", "standard" », "dialect").
+  ...
+
+  GetOption ( options, property, type, values, fallback )
+
+  1. Let value be ? Get(options, property).
+  ...
+features: [Intl.DisplayNames-v2]
+locale: [en]
+---*/
+
+var options = { type: 'language' };
+Object.defineProperty(options, 'languageDisplay', {
+  get() { throw new Test262Error(); },
+});
+
+assert.throws(Test262Error, () => {
+  new Intl.DisplayNames('en', options);
+});
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/intl402/DisplayNames/options-languagedisplay-invalid-throws.js b/js/src/tests/test262/intl402/DisplayNames/options-languagedisplay-invalid-throws.js
new file mode 100644
index 0000000000..95a6f3a032
--- /dev/null
+++ b/js/src/tests/test262/intl402/DisplayNames/options-languagedisplay-invalid-throws.js
@@ -0,0 +1,59 @@
+// Copyright (C) 2021 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+esid: sec-Intl.DisplayNames
+description: >
+  Return abrupt completion from an invalid fallback option
+info: |
+  Intl.DisplayNames ( locales , options )
+
+  1. If NewTarget is undefined, throw a TypeError exception.
+  2. Let displayNames be ? OrdinaryCreateFromConstructor(NewTarget, "%DisplayNamesPrototype%",
+    « [[InitializedDisplayNames]], [[Locale]], [[Style]], [[Type]], [[Fallback]], [[Fields]] »).
+  ...
+  4. Let options be ? ToObject(options).
+  ...
+  8. Let matcher be ? GetOption(options, "localeMatcher", "string", « "lookup", "best fit" », "best fit").
+  ...
+  12. Let type be ? GetOption(options, "type", "string", « "language", "region", "script", "currency" », "language").
+  13. If type is undefined, throw a TypeError exception.
+  ...
+  24. Let languageDisplay be ? GetOption(options, "languageDisplay", "string", « "dialect", "standard" », "dialect").
+  ...
+
+  GetOption ( options, property, type, values, fallback )
+
+  1. Let value be ? Get(options, property).
+  2. If value is not undefined, then
+    ...
+    c. If type is "string", then
+      i. Let value be ? ToString(value).
+    d. If values is not undefined, then
+      i. If values does not contain an element equal to value, throw a RangeError exception.
+  ...
+features: [Intl.DisplayNames-v2]
+locale: [en]
+---*/
+
+assert.throws(RangeError, () => {
+  new Intl.DisplayNames('en', {languageDisplay: 'err', type: 'language'});
+}, 'err');
+
+assert.throws(RangeError, () => {
+  new Intl.DisplayNames('en', {languageDisplay: 'standar', type: 'language'});
+}, 'standar, not standard');
+
+assert.throws(RangeError, () => {
+  new Intl.DisplayNames('en', {languageDisplay: null, type: 'language'});
+}, 'null');
+
+assert.throws(RangeError, () => {
+  new Intl.DisplayNames('en', {languageDisplay: '', type: 'language'});
+}, 'the empty string');
+
+assert.throws(RangeError, () => {
+  new Intl.DisplayNames('en', {languageDisplay: ['dialect', 'standard'], type: 'language'});
+}, 'an array with the valid options is not necessarily valid');
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/intl402/DisplayNames/options-languagedisplay-toString-abrupt-throws.js b/js/src/tests/test262/intl402/DisplayNames/options-languagedisplay-toString-abrupt-throws.js
new file mode 100644
index 0000000000..96a4e3ce7c
--- /dev/null
+++ b/js/src/tests/test262/intl402/DisplayNames/options-languagedisplay-toString-abrupt-throws.js
@@ -0,0 +1,57 @@
+// Copyright (C) 2021 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+esid: sec-Intl.DisplayNames
+description: >
+  Return abrupt completion from GetOption fallback
+info: |
+  Intl.DisplayNames ( locales , options )
+
+  1. If NewTarget is undefined, throw a TypeError exception.
+  2. Let displayNames be ? OrdinaryCreateFromConstructor(NewTarget, "%DisplayNamesPrototype%",
+    « [[InitializedDisplayNames]], [[Locale]], [[Style]], [[Type]], [[Fallback]], [[Fields]] »).
+  ...
+  4. Let options be ? ToObject(options).
+  ...
+  8. Let matcher be ? GetOption(options, "localeMatcher", "string", « "lookup", "best fit" », "best fit").
+  ...
+  24. Let languageDisplay be ? GetOption(options, "languageDisplay", "string", « "dialect", "standard" », "dialect").
+  ...
+
+  GetOption ( options, property, type, values, fallback )
+
+  1. Let value be ? Get(options, property).
+  ...
+features: [Intl.DisplayNames-v2, Symbol]
+locale: [en]
+---*/
+
+assert.throws(Test262Error, () => {
+  new Intl.DisplayNames('en', {
+    type: 'language', languageDisplay: { toString() { throw new Test262Error(); }}
+  });
+}, 'from toString');
+
+assert.throws(Test262Error, () => {
+  new Intl.DisplayNames('en', {
+    type: 'language',
+    languageDisplay: {toString: undefined, valueOf() {throw new Test262Error(); }}
+  });
+}, 'from valueOf');
+
+assert.throws(Test262Error, () => {
+  new Intl.DisplayNames('en', {
+    type: 'language',
+    languageDisplay: { [Symbol.toPrimitive]() { throw new Test262Error(); } }
+  });
+}, 'from ToPrimitive');
+
+assert.throws(TypeError, () => {
+  new Intl.DisplayNames('en', {
+    type: 'language',
+    languageDisplay: Symbol()
+  });
+}, 'symbol value');
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/intl402/DisplayNames/options-languagedisplay-valid.js b/js/src/tests/test262/intl402/DisplayNames/options-languagedisplay-valid.js
new file mode 100644
index 0000000000..3b6ce728d4
--- /dev/null
+++ b/js/src/tests/test262/intl402/DisplayNames/options-languagedisplay-valid.js
@@ -0,0 +1,49 @@
+// Copyright (C) 2021 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+esid: sec-Intl.DisplayNames
+description: Valid options for languageDisplay
+info: |
+  Intl.DisplayNames ( locales , options )
+
+  1. If NewTarget is undefined, throw a TypeError exception.
+  2. Let displayNames be ? OrdinaryCreateFromConstructor(NewTarget, "%DisplayNamesPrototype%",
+    « [[InitializedDisplayNames]], [[Locale]], [[Style]], [[Type]], [[Fallback]], [[Fields]] »).
+  ...
+  4. Let options be ? ToObject(options).
+  ...
+  8. Let matcher be ? GetOption(options, "localeMatcher", "string", « "lookup", "best fit" », "best fit").
+  ...
+  10. Let style be ? GetOption(options, "style", "string", « "narrow", "short", "long" », "long").
+  ...
+  12. Let type be ? GetOption(options, "type", "string", « "language", "region", "script", "currency" », undefined).
+  13. If type is undefined, throw a TypeError exception.
+  ...
+  24. Let languageDisplay be ? GetOption(options, "languageDisplay", "string", « "dialect", "standard" », "dialect").
+  ...
+
+  GetOption ( options, property, type, values, fallback )
+
+  1. Let value be ? Get(options, property).
+  ...
+features: [Intl.DisplayNames-v2]
+locale: [en]
+---*/
+
+// results for option values verified in the tests for resolvedOptions
+
+const languageDisplays = [
+  undefined,
+  'dialect',
+  'standard'
+];
+
+languageDisplays.forEach(languageDisplay => {
+  const obj = new Intl.DisplayNames('en', { languageDisplay, type: 'language'});
+
+  assert(obj instanceof Intl.DisplayNames, `instanceof check - ${languageDisplay}`);
+  assert.sameValue(Object.getPrototypeOf(obj), Intl.DisplayNames.prototype, `proto check - ${languageDisplay}`);
+});
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/intl402/DisplayNames/options-localeMatcher-abrupt-throws.js b/js/src/tests/test262/intl402/DisplayNames/options-localeMatcher-abrupt-throws.js
new file mode 100644
index 0000000000..1cb0a8013c
--- /dev/null
+++ b/js/src/tests/test262/intl402/DisplayNames/options-localeMatcher-abrupt-throws.js
@@ -0,0 +1,39 @@
+// Copyright (C) 2019 Leo Balter. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+esid: sec-Intl.DisplayNames
+description: >
+  Return abrupt completion from GetOption localeMatcher
+info: |
+  Intl.DisplayNames ([ locales [ , options ]])
+
+  1. If NewTarget is undefined, throw a TypeError exception.
+  2. Let displayNames be ? OrdinaryCreateFromConstructor(NewTarget, "%DisplayNamesPrototype%",
+    « [[InitializedDisplayNames]], [[Locale]], [[Style]], [[Type]], [[Fallback]], [[Fields]] »).
+  ...
+  4. If options is undefined, then
+    a. Let options be ObjectCreate(null).
+  5. Else
+    a. Let options be ? ToObject(options).
+  ...
+  8. Let matcher be ? GetOption(options, "localeMatcher", "string", « "lookup", "best fit" », "best fit").
+
+  GetOption ( options, property, type, values, fallback )
+
+  1. Let value be ? Get(options, property).
+  ...
+features: [Intl.DisplayNames]
+locale: [en]
+---*/
+
+var options = {};
+Object.defineProperty(options, 'localeMatcher', {
+  get() { throw new Test262Error(); },
+});
+
+assert.throws(Test262Error, () => {
+  new Intl.DisplayNames('en', options);
+});
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/intl402/DisplayNames/options-localeMatcher-invalid-throws.js b/js/src/tests/test262/intl402/DisplayNames/options-localeMatcher-invalid-throws.js
new file mode 100644
index 0000000000..a0f1cfd744
--- /dev/null
+++ b/js/src/tests/test262/intl402/DisplayNames/options-localeMatcher-invalid-throws.js
@@ -0,0 +1,69 @@
+// Copyright (C) 2019 Leo Balter. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+esid: sec-Intl.DisplayNames
+description: >
+  Return abrupt completion from an invalid localeMatcher option
+info: |
+  Intl.DisplayNames ([ locales [ , options ]])
+
+  1. If NewTarget is undefined, throw a TypeError exception.
+  2. Let displayNames be ? OrdinaryCreateFromConstructor(NewTarget, "%DisplayNamesPrototype%",
+    « [[InitializedDisplayNames]], [[Locale]], [[Style]], [[Type]], [[Fallback]], [[Fields]] »).
+  ...
+  4. If options is undefined, then
+    a. Let options be ObjectCreate(null).
+  5. Else
+    a. Let options be ? ToObject(options).
+  ...
+  8. Let matcher be ? GetOption(options, "localeMatcher", "string", « "lookup", "best fit" », "best fit").
+
+  GetOption ( options, property, type, values, fallback )
+
+  1. Let value be ? Get(options, property).
+  2. If value is not undefined, then
+    ...
+    c. If type is "string", then
+      i. Let value be ? ToString(value).
+    d. If values is not undefined, then
+      i. If values does not contain an element equal to value, throw a RangeError exception.
+  ...
+features: [Intl.DisplayNames]
+locale: [en]
+---*/
+
+var options = {
+  localeMatcher: 'bestfit' // not "best fit"
+};
+
+assert.throws(RangeError, () => {
+  new Intl.DisplayNames('en', options);
+}, 'bestfit');
+
+options.localeMatcher = 'look up';
+
+assert.throws(RangeError, () => {
+  new Intl.DisplayNames('en', options);
+}, 'look up');
+
+options.localeMatcher = null;
+
+assert.throws(RangeError, () => {
+  new Intl.DisplayNames('en', options);
+}, 'null');
+
+options.localeMatcher = '';
+
+assert.throws(RangeError, () => {
+  new Intl.DisplayNames('en', options);
+}, 'the empty string');
+
+// The world could burn
+options.localeMatcher = ['lookup', 'best fit'];
+
+assert.throws(RangeError, () => {
+  new Intl.DisplayNames('en', options);
+}, 'an array with the valid options is not necessarily valid');
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/intl402/DisplayNames/options-localeMatcher-toString-abrupt-throws.js b/js/src/tests/test262/intl402/DisplayNames/options-localeMatcher-toString-abrupt-throws.js
new file mode 100644
index 0000000000..64ecd3c1e9
--- /dev/null
+++ b/js/src/tests/test262/intl402/DisplayNames/options-localeMatcher-toString-abrupt-throws.js
@@ -0,0 +1,69 @@
+// Copyright (C) 2019 Leo Balter. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+esid: sec-Intl.DisplayNames
+description: >
+  Return abrupt completion from GetOption localeMatcher
+info: |
+  Intl.DisplayNames ([ locales [ , options ]])
+
+  1. If NewTarget is undefined, throw a TypeError exception.
+  2. Let displayNames be ? OrdinaryCreateFromConstructor(NewTarget, "%DisplayNamesPrototype%",
+    « [[InitializedDisplayNames]], [[Locale]], [[Style]], [[Type]], [[Fallback]], [[Fields]] »).
+  ...
+  4. If options is undefined, then
+    a. Let options be ObjectCreate(null).
+  5. Else
+    a. Let options be ? ToObject(options).
+  ...
+  8. Let matcher be ? GetOption(options, "localeMatcher", "string", « "lookup", "best fit" », "best fit").
+
+  GetOption ( options, property, type, values, fallback )
+
+  1. Let value be ? Get(options, property).
+  ...
+features: [Intl.DisplayNames, Symbol]
+locale: [en]
+---*/
+
+var options = {
+  localeMatcher: {
+    toString() {
+      throw new Test262Error();
+    }
+  }
+};
+
+assert.throws(Test262Error, () => {
+  new Intl.DisplayNames('en', options);
+}, 'from toString');
+
+options.localeMatcher = {
+  toString: undefined,
+  valueOf() {
+    throw new Test262Error();
+  }
+};
+
+assert.throws(Test262Error, () => {
+  new Intl.DisplayNames('en', options);
+}, 'from valueOf');
+
+options.localeMatcher = {
+  [Symbol.toPrimitive]() {
+    throw new Test262Error();
+  }
+};
+
+assert.throws(Test262Error, () => {
+  new Intl.DisplayNames('en', options);
+}, 'from ToPrimitive');
+
+options.localeMatcher = Symbol();
+
+assert.throws(TypeError, () => {
+  new Intl.DisplayNames('en', options);
+}, 'symbol value');
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/intl402/DisplayNames/options-localeMatcher-valid.js b/js/src/tests/test262/intl402/DisplayNames/options-localeMatcher-valid.js
new file mode 100644
index 0000000000..c934443d8a
--- /dev/null
+++ b/js/src/tests/test262/intl402/DisplayNames/options-localeMatcher-valid.js
@@ -0,0 +1,50 @@
+// Copyright (C) 2019 Leo Balter. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+esid: sec-Intl.DisplayNames
+description: >
+  Valid options for localeMatcher
+info: |
+  Intl.DisplayNames ( locales , options )
+
+  1. If NewTarget is undefined, throw a TypeError exception.
+  2. Let displayNames be ? OrdinaryCreateFromConstructor(NewTarget, "%DisplayNamesPrototype%",
+    « [[InitializedDisplayNames]], [[Locale]], [[Style]], [[Type]], [[Fallback]], [[Fields]] »).
+  ...
+  4. Let options be ? ToObject(options).
+  ...
+  8. Let matcher be ? GetOption(options, "localeMatcher", "string", « "lookup", "best fit" », "best fit").
+  ...
+  10. Let style be ? GetOption(options, "style", "string", « "narrow", "short", "long" », "long").
+  ...
+  12. Let type be ? GetOption(options, "type", "string", « "language", "region", "script", "currency" », undefined).
+  13. If type is undefined, throw a TypeError exception.
+  ...
+  15. Let fallback be ? GetOption(options, "fallback", "string", « "code", "none" », "code").
+  ...
+
+  GetOption ( options, property, type, values, fallback )
+
+  1. Let value be ? Get(options, property).
+  ...
+features: [Intl.DisplayNames]
+locale: [en]
+---*/
+
+// results for option values verified in the tests for resolvedOptions
+
+const localeMatchers = [
+  undefined,
+  'lookup',
+  'best fit'
+];
+
+localeMatchers.forEach(localeMatcher => {
+  const obj = new Intl.DisplayNames('en', { localeMatcher, type: 'language' });
+
+  assert(obj instanceof Intl.DisplayNames, `instanceof check - ${localeMatcher}`);
+  assert.sameValue(Object.getPrototypeOf(obj), Intl.DisplayNames.prototype, `proto check - ${localeMatcher}`);
+});
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/intl402/DisplayNames/options-null-throws.js b/js/src/tests/test262/intl402/DisplayNames/options-null-throws.js
new file mode 100644
index 0000000000..dca7bf9caa
--- /dev/null
+++ b/js/src/tests/test262/intl402/DisplayNames/options-null-throws.js
@@ -0,0 +1,28 @@
+// Copyright (C) 2019 Leo Balter. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+esid: sec-Intl.DisplayNames
+description: >
+  Throws TypeError if options is null
+info: |
+  Intl.DisplayNames ([ locales [ , options ]])
+
+  1. If NewTarget is undefined, throw a TypeError exception.
+  2. Let displayNames be ? OrdinaryCreateFromConstructor(NewTarget, "%DisplayNamesPrototype%",
+    « [[InitializedDisplayNames]], [[Locale]], [[Style]], [[Type]], [[Fallback]], [[Fields]] »).
+  ...
+  4. If options is undefined, then
+    a. Let options be ObjectCreate(null).
+  5. Else
+    a. Let options be ? ToObject(options).
+  ...
+features: [Intl.DisplayNames]
+locale: [en]
+---*/
+
+assert.throws(TypeError, () => {
+  new Intl.DisplayNames('en', null);
+}, 'null');
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/intl402/DisplayNames/options-random-properties-unchecked.js b/js/src/tests/test262/intl402/DisplayNames/options-random-properties-unchecked.js
new file mode 100644
index 0000000000..2bd057a4dd
--- /dev/null
+++ b/js/src/tests/test262/intl402/DisplayNames/options-random-properties-unchecked.js
@@ -0,0 +1,54 @@
+// Copyright (C) 2019 Leo Balter. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+esid: sec-Intl.DisplayNames
+description: >
+  Random options are not checked or used, including case sensitive
+info: |
+  Intl.DisplayNames ( locales , options )
+
+  1. If NewTarget is undefined, throw a TypeError exception.
+  2. Let displayNames be ? OrdinaryCreateFromConstructor(NewTarget, "%DisplayNamesPrototype%",
+    « [[InitializedDisplayNames]], [[Locale]], [[Style]], [[Type]], [[Fallback]], [[Fields]] »).
+  ...
+  4. Let options be ? ToObject(options).
+  ...
+  7. Let matcher be ? GetOption(options, "localeMatcher", "string", « "lookup", "best fit" », "best fit").
+  ...
+  10. Let style be ? GetOption(options, "style", "string", « "narrow", "short", "long" », "long").
+  ...
+  12. Let type be ? GetOption(options, "type", "string", « "language", "region", "script", "currency" », undefined).
+  13. If type is undefined, throw a TypeError exception.
+  ...
+  15. Let fallback be ? GetOption(options, "fallback", "string", « "code", "none" », "code").
+  ...
+
+  GetOption ( options, property, type, values, fallback )
+
+  1. Let value be ? Get(options, property).
+  ...
+features: [Intl.DisplayNames]
+locale: [en]
+---*/
+
+var options = { type: 'language' };
+Object.defineProperty(options, 'fallBack', {
+  get() { throw new Test262Error(); }
+});
+Object.defineProperty(options, 'localematcher', {
+  get() { throw new Test262Error(); }
+});
+Object.defineProperty(options, 'locale-matcher', {
+  get() { throw new Test262Error(); }
+});
+Object.defineProperty(options, 'Type', {
+  get() { throw new Test262Error(); }
+});
+
+var obj = new Intl.DisplayNames('en', options);
+
+assert(obj instanceof Intl.DisplayNames);
+assert.sameValue(Object.getPrototypeOf(obj), Intl.DisplayNames.prototype);
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/intl402/DisplayNames/options-style-abrupt-throws.js b/js/src/tests/test262/intl402/DisplayNames/options-style-abrupt-throws.js
new file mode 100644
index 0000000000..51d7d4a6d8
--- /dev/null
+++ b/js/src/tests/test262/intl402/DisplayNames/options-style-abrupt-throws.js
@@ -0,0 +1,46 @@
+// Copyright (C) 2019 Leo Balter. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+esid: sec-Intl.DisplayNames
+description: >
+  Return abrupt completion from GetOption style
+info: |
+  Intl.DisplayNames ([ locales [ , options ]])
+
+  1. If NewTarget is undefined, throw a TypeError exception.
+  2. Let displayNames be ? OrdinaryCreateFromConstructor(NewTarget, "%DisplayNamesPrototype%",
+    « [[InitializedDisplayNames]], [[Locale]], [[Style]], [[Type]], [[Fallback]], [[Fields]] »).
+  ...
+  4. If options is undefined, then
+    a. Let options be ObjectCreate(null).
+  5. Else
+    a. Let options be ? ToObject(options).
+  ...
+  8. Let matcher be ? GetOption(options, "localeMatcher", "string", « "lookup", "best fit" », "best fit").
+  ...
+  11. Let style be ? GetOption(options, "style", "string", « "narrow", "short", "long" », "long").
+  ...
+  13. Let type be ? GetOption(options, "type", "string", « "language", "region", "script", "currency", "weekday", "month", "quarter", "dayPeriod", "dateTimeField" », "language").
+  ...
+  15. Let fallback be ? GetOption(options, "fallback", "string", « "code", "none" », "code").
+  ...
+
+  GetOption ( options, property, type, values, fallback )
+
+  1. Let value be ? Get(options, property).
+  ...
+features: [Intl.DisplayNames]
+locale: [en]
+---*/
+
+var options = {};
+Object.defineProperty(options, 'style', {
+  get() { throw new Test262Error(); },
+});
+
+assert.throws(Test262Error, () => {
+  new Intl.DisplayNames('en', options);
+});
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/intl402/DisplayNames/options-style-invalid-throws.js b/js/src/tests/test262/intl402/DisplayNames/options-style-invalid-throws.js
new file mode 100644
index 0000000000..76083d3793
--- /dev/null
+++ b/js/src/tests/test262/intl402/DisplayNames/options-style-invalid-throws.js
@@ -0,0 +1,77 @@
+// Copyright (C) 2019 Leo Balter. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+esid: sec-Intl.DisplayNames
+description: >
+  Return abrupt completion from an invalid style option
+info: |
+  Intl.DisplayNames ([ locales [ , options ]])
+
+  1. If NewTarget is undefined, throw a TypeError exception.
+  2. Let displayNames be ? OrdinaryCreateFromConstructor(NewTarget, "%DisplayNamesPrototype%",
+    « [[InitializedDisplayNames]], [[Locale]], [[Style]], [[Type]], [[Fallback]], [[Fields]] »).
+  ...
+  4. If options is undefined, then
+    a. Let options be ObjectCreate(null).
+  5. Else
+    a. Let options be ? ToObject(options).
+  ...
+  8. Let matcher be ? GetOption(options, "localeMatcher", "string", « "lookup", "best fit" », "best fit").
+  ...
+  11. Let style be ? GetOption(options, "style", "string", « "narrow", "short", "long" », "long").
+  ...
+
+  GetOption ( options, property, type, values, fallback )
+
+  1. Let value be ? Get(options, property).
+  2. If value is not undefined, then
+    ...
+    c. If type is "string", then
+      i. Let value be ? ToString(value).
+    d. If values is not undefined, then
+      i. If values does not contain an element equal to value, throw a RangeError exception.
+  ...
+features: [Intl.DisplayNames]
+locale: [en]
+---*/
+
+var options = {
+  style: 'small'
+};
+
+assert.throws(RangeError, () => {
+  new Intl.DisplayNames('en', options);
+}, 'small');
+
+options.style = 'very long';
+
+assert.throws(RangeError, () => {
+  new Intl.DisplayNames('en', options);
+}, 'very long');
+
+options.style = 'full';
+
+assert.throws(RangeError, () => {
+  new Intl.DisplayNames('en', options);
+}, 'full');
+
+options.style = null;
+
+assert.throws(RangeError, () => {
+  new Intl.DisplayNames('en', options);
+}, 'null');
+
+options.style = '';
+
+assert.throws(RangeError, () => {
+  new Intl.DisplayNames('en', options);
+}, 'the empty string');
+
+options.style = ['narrow', 'short', 'long'];
+
+assert.throws(RangeError, () => {
+  new Intl.DisplayNames('en', options);
+}, 'an array with the valid options is not necessarily valid');
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/intl402/DisplayNames/options-style-toString-abrupt-throws.js b/js/src/tests/test262/intl402/DisplayNames/options-style-toString-abrupt-throws.js
new file mode 100644
index 0000000000..ac03b3ce1e
--- /dev/null
+++ b/js/src/tests/test262/intl402/DisplayNames/options-style-toString-abrupt-throws.js
@@ -0,0 +1,72 @@
+// Copyright (C) 2019 Leo Balter. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+esid: sec-Intl.DisplayNames
+description: >
+  Return abrupt completion from GetOption style
+info: |
+  Intl.DisplayNames ([ locales [ , options ]])
+
+  1. If NewTarget is undefined, throw a TypeError exception.
+  2. Let displayNames be ? OrdinaryCreateFromConstructor(NewTarget, "%DisplayNamesPrototype%",
+    « [[InitializedDisplayNames]], [[Locale]], [[Style]], [[Type]], [[Fallback]], [[Fields]] »).
+  ...
+  4. If options is undefined, then
+    a. Let options be ObjectCreate(null).
+  5. Else
+    a. Let options be ? ToObject(options).
+  ...
+  8. Let matcher be ? GetOption(options, "localeMatcher", "string", « "lookup", "best fit" », "best fit").
+  ...
+  11. Let style be ? GetOption(options, "style", "string", « "narrow", "short", "long" », "long").
+  ...
+
+  GetOption ( options, property, type, values, fallback )
+
+  1. Let value be ? Get(options, property).
+  ...
+features: [Intl.DisplayNames, Symbol]
+locale: [en]
+---*/
+
+var options = {
+  style: {
+    toString() {
+      throw new Test262Error();
+    }
+  }
+};
+
+assert.throws(Test262Error, () => {
+  new Intl.DisplayNames('en', options);
+}, 'from toString');
+
+options.style = {
+  toString: undefined,
+  valueOf() {
+    throw new Test262Error();
+  }
+};
+
+assert.throws(Test262Error, () => {
+  new Intl.DisplayNames('en', options);
+}, 'from valueOf');
+
+options.style = {
+  [Symbol.toPrimitive]() {
+    throw new Test262Error();
+  }
+};
+
+assert.throws(Test262Error, () => {
+  new Intl.DisplayNames('en', options);
+}, 'from ToPrimitive');
+
+options.style = Symbol();
+
+assert.throws(TypeError, () => {
+  new Intl.DisplayNames('en', options);
+}, 'symbol value');
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/intl402/DisplayNames/options-style-valid.js b/js/src/tests/test262/intl402/DisplayNames/options-style-valid.js
new file mode 100644
index 0000000000..e2a8fd9890
--- /dev/null
+++ b/js/src/tests/test262/intl402/DisplayNames/options-style-valid.js
@@ -0,0 +1,51 @@
+// Copyright (C) 2019 Leo Balter. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+esid: sec-Intl.DisplayNames
+description: >
+  Valid options for localeMatcher
+info: |
+  Intl.DisplayNames ( locales , options )
+
+  1. If NewTarget is undefined, throw a TypeError exception.
+  2. Let displayNames be ? OrdinaryCreateFromConstructor(NewTarget, "%DisplayNamesPrototype%",
+    « [[InitializedDisplayNames]], [[Locale]], [[Style]], [[Type]], [[Fallback]], [[Fields]] »).
+  ...
+  4. Let options be ? ToObject(options).
+  ...
+  10. Let style be ? GetOption(options, "style", "string", « "narrow", "short", "long" », "long").
+  ...
+  12. Let type be ? GetOption(options, "type", "string", « "language", "region", "script", "currency" », undefined).
+  13. If type is undefined, throw a TypeError exception.
+  ...
+
+  GetOption ( options, property, type, values, fallback )
+
+  1. Let value be ? Get(options, property).
+  ...
+features: [Intl.DisplayNames]
+locale: [en]
+---*/
+
+// results for option values verified in the tests for resolvedOptions
+
+const styles = [
+  undefined,
+  'narrow',
+  'short',
+  'long'
+];
+
+const types = ['language', 'region', 'script', 'currency'];
+
+types.forEach( type => {
+  styles.forEach(style => {
+    var obj = new Intl.DisplayNames('en', { style, type });
+
+    assert(obj instanceof Intl.DisplayNames, `instanceof check - ${style}`);
+    assert.sameValue(Object.getPrototypeOf(obj), Intl.DisplayNames.prototype, `proto check - ${style}`);
+  });
+});
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/intl402/DisplayNames/options-type-abrupt-throws.js b/js/src/tests/test262/intl402/DisplayNames/options-type-abrupt-throws.js
new file mode 100644
index 0000000000..d7362cd778
--- /dev/null
+++ b/js/src/tests/test262/intl402/DisplayNames/options-type-abrupt-throws.js
@@ -0,0 +1,46 @@
+// Copyright (C) 2019 Leo Balter. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+esid: sec-Intl.DisplayNames
+description: >
+  Return abrupt completion from GetOption type
+info: |
+  Intl.DisplayNames ([ locales [ , options ]])
+
+  1. If NewTarget is undefined, throw a TypeError exception.
+  2. Let displayNames be ? OrdinaryCreateFromConstructor(NewTarget, "%DisplayNamesPrototype%",
+    « [[InitializedDisplayNames]], [[Locale]], [[Style]], [[Type]], [[Fallback]], [[Fields]] »).
+  ...
+  4. If options is undefined, then
+    a. Let options be ObjectCreate(null).
+  5. Else
+    a. Let options be ? ToObject(options).
+  ...
+  8. Let matcher be ? GetOption(options, "localeMatcher", "string", « "lookup", "best fit" », "best fit").
+  ...
+  11. Let style be ? GetOption(options, "style", "string", « "narrow", "short", "long" », "long").
+  ...
+  13. Let type be ? GetOption(options, "type", "string", « "language", "region", "script", "currency", "weekday", "month", "quarter", "dayPeriod", "dateTimeField" », "language").
+  ...
+  15. Let fallback be ? GetOption(options, "fallback", "string", « "code", "none" », "code").
+  ...
+
+  GetOption ( options, property, type, values, fallback )
+
+  1. Let value be ? Get(options, property).
+  ...
+features: [Intl.DisplayNames]
+locale: [en]
+---*/
+
+var options = {};
+Object.defineProperty(options, 'type', {
+  get() { throw new Test262Error(); },
+});
+
+assert.throws(Test262Error, () => {
+  new Intl.DisplayNames('en', options);
+});
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/intl402/DisplayNames/options-type-invalid-throws.js b/js/src/tests/test262/intl402/DisplayNames/options-type-invalid-throws.js
new file mode 100644
index 0000000000..bdbaecae82
--- /dev/null
+++ b/js/src/tests/test262/intl402/DisplayNames/options-type-invalid-throws.js
@@ -0,0 +1,78 @@
+// Copyright (C) 2019 Leo Balter. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+esid: sec-Intl.DisplayNames
+description: >
+  Return abrupt completion from an invalid type option
+info: |
+  Intl.DisplayNames ( locales , options )
+
+  1. If NewTarget is undefined, throw a TypeError exception.
+  2. Let displayNames be ? OrdinaryCreateFromConstructor(NewTarget, "%DisplayNamesPrototype%",
+    « [[InitializedDisplayNames]], [[Locale]], [[Style]], [[Type]], [[Fallback]], [[Fields]] »).
+  ...
+  4. Let options be ? ToObject(options).
+  ...
+  8. Let matcher be ? GetOption(options, "localeMatcher", "string", « "lookup", "best fit" », "best fit").
+  ...
+  10. Let style be ? GetOption(options, "style", "string", « "narrow", "short", "long" », "long").
+  ...
+  12. Let type be ? GetOption(options, "type", "string", « "language", "region", "script", "currency" », undefined).
+  13. If type is undefined, throw a TypeError exception.
+  ...
+  15. Let fallback be ? GetOption(options, "fallback", "string", « "code", "none" », "code").
+  ...
+
+  GetOption ( options, property, type, values, fallback )
+
+  1. Let value be ? Get(options, property).
+  2. If value is not undefined, then
+    ...
+    c. If type is "string", then
+      i. Let value be ? ToString(value).
+    d. If values is not undefined, then
+      i. If values does not contain an element equal to value, throw a RangeError exception.
+  ...
+features: [Intl.DisplayNames]
+locale: [en]
+---*/
+
+assert.throws(TypeError, () => {
+  new Intl.DisplayNames('en', undefined);
+}, 'undefined options');
+
+assert.throws(TypeError, () => {
+  new Intl.DisplayNames('en', {});
+}, '{} options');
+
+assert.throws(TypeError, () => {
+  new Intl.DisplayNames('en', {type: undefined});
+}, 'undefined type');
+
+assert.throws(RangeError, () => {
+  new Intl.DisplayNames('en', {type: 'lang'});
+}, 'type = lang');
+
+assert.throws(RangeError, () => {
+  new Intl.DisplayNames('en', {type: 'dayPeriod'});
+}, 'dayPeriod not supported yet');
+
+assert.throws(RangeError, () => {
+  new Intl.DisplayNames('en', {type: 'weekday'});
+}, 'weekday not supported yet');
+
+assert.throws(RangeError, () => {
+  new Intl.DisplayNames('en', {type: null});
+}, 'type = null');
+
+
+assert.throws(RangeError, () => {
+  new Intl.DisplayNames('en', {type: ''});
+}, 'type = ""');
+
+assert.throws(RangeError, () => {
+  new Intl.DisplayNames('en', {type: ['language', 'region', 'script', 'currency']});
+}, 'an array with the valid options is not necessarily valid');
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/intl402/DisplayNames/options-type-toString-abrupt-throws.js b/js/src/tests/test262/intl402/DisplayNames/options-type-toString-abrupt-throws.js
new file mode 100644
index 0000000000..36f43563cf
--- /dev/null
+++ b/js/src/tests/test262/intl402/DisplayNames/options-type-toString-abrupt-throws.js
@@ -0,0 +1,76 @@
+// Copyright (C) 2019 Leo Balter. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+esid: sec-Intl.DisplayNames
+description: >
+  Return abrupt completion from GetOption type
+info: |
+  Intl.DisplayNames ([ locales [ , options ]])
+
+  1. If NewTarget is undefined, throw a TypeError exception.
+  2. Let displayNames be ? OrdinaryCreateFromConstructor(NewTarget, "%DisplayNamesPrototype%",
+    « [[InitializedDisplayNames]], [[Locale]], [[Style]], [[Type]], [[Fallback]], [[Fields]] »).
+  ...
+  4. If options is undefined, then
+    a. Let options be ObjectCreate(null).
+  5. Else
+    a. Let options be ? ToObject(options).
+  ...
+  8. Let matcher be ? GetOption(options, "localeMatcher", "string", « "lookup", "best fit" », "best fit").
+  ...
+  11. Let style be ? GetOption(options, "style", "string", « "narrow", "short", "long" », "long").
+  ...
+  13. Let type be ? GetOption(options, "type", "string", « "language", "region", "script", "currency", "weekday", "month", "quarter", "dayPeriod", "dateTimeField" », "language").
+  ...
+  15. Let fallback be ? GetOption(options, "fallback", "string", « "code", "none" », "code").
+  ...
+
+  GetOption ( options, property, type, values, fallback )
+
+  1. Let value be ? Get(options, property).
+  ...
+features: [Intl.DisplayNames, Symbol]
+locale: [en]
+---*/
+
+var options = {
+  type: {
+    toString() {
+      throw new Test262Error();
+    }
+  }
+};
+
+assert.throws(Test262Error, () => {
+  new Intl.DisplayNames('en', options);
+}, 'from toString');
+
+options.type = {
+  toString: undefined,
+  valueOf() {
+    throw new Test262Error();
+  }
+};
+
+assert.throws(Test262Error, () => {
+  new Intl.DisplayNames('en', options);
+}, 'from valueOf');
+
+options.type = {
+  [Symbol.toPrimitive]() {
+    throw new Test262Error();
+  }
+};
+
+assert.throws(Test262Error, () => {
+  new Intl.DisplayNames('en', options);
+}, 'from ToPrimitive');
+
+options.type = Symbol();
+
+assert.throws(TypeError, () => {
+  new Intl.DisplayNames('en', options);
+}, 'symbol value');
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/intl402/DisplayNames/options-type-valid.js b/js/src/tests/test262/intl402/DisplayNames/options-type-valid.js
new file mode 100644
index 0000000000..54e884e880
--- /dev/null
+++ b/js/src/tests/test262/intl402/DisplayNames/options-type-valid.js
@@ -0,0 +1,45 @@
+// Copyright (C) 2019 Leo Balter. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+esid: sec-Intl.DisplayNames
+description: >
+  Valid options for localeMatcher
+info: |
+  Intl.DisplayNames ( locales , options )
+
+  1. If NewTarget is undefined, throw a TypeError exception.
+  2. Let displayNames be ? OrdinaryCreateFromConstructor(NewTarget, "%DisplayNamesPrototype%",
+    « [[InitializedDisplayNames]], [[Locale]], [[Style]], [[Type]], [[Fallback]], [[Fields]] »).
+  ...
+  4. Let options be ? ToObject(options).
+  ...
+  12. Let type be ? GetOption(options, "type", "string", « "language", "region", "script", "currency" », undefined).
+  13. If type is undefined, throw a TypeError exception.
+  ...
+
+  GetOption ( options, property, type, values, fallback )
+
+  1. Let value be ? Get(options, property).
+  ...
+features: [Intl.DisplayNames]
+locale: [en]
+---*/
+
+// results for option values verified in the tests for resolvedOptions
+
+const types = [
+  'language',
+  'region',
+  'script',
+  'currency'
+];
+
+types.forEach(type => {
+  const obj = new Intl.DisplayNames('en', { type });
+
+  assert(obj instanceof Intl.DisplayNames, `instanceof check - ${type}`);
+  assert.sameValue(Object.getPrototypeOf(obj), Intl.DisplayNames.prototype, `proto check - ${type}`);
+});
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/intl402/DisplayNames/prop-desc.js b/js/src/tests/test262/intl402/DisplayNames/prop-desc.js
new file mode 100644
index 0000000000..337f52b0ab
--- /dev/null
+++ b/js/src/tests/test262/intl402/DisplayNames/prop-desc.js
@@ -0,0 +1,26 @@
+// Copyright (C) 2019 Leo Balter. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+esid: sec-Intl.DisplayNames
+description: >
+  Property descriptor of Intl.DisplayNames
+info: |
+  17 ECMAScript Standard Built-in Objects:
+
+  Every other data property described in clauses 18 through 26 and in Annex B.2
+  has the attributes { [[Writable]]: true, [[Enumerable]]: false,
+  [[Configurable]]: true } unless otherwise specified.
+includes: [propertyHelper.js]
+features: [Intl.DisplayNames]
+---*/
+
+assert.sameValue(typeof Intl.DisplayNames, "function", "`typeof Intl.DisplayNames` is `'function'`");
+
+verifyProperty(Intl, "DisplayNames", {
+  writable: true,
+  enumerable: false,
+  configurable: true,
+});
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/intl402/DisplayNames/proto-from-ctor-realm.js b/js/src/tests/test262/intl402/DisplayNames/proto-from-ctor-realm.js
new file mode 100644
index 0000000000..cac9302e8f
--- /dev/null
+++ b/js/src/tests/test262/intl402/DisplayNames/proto-from-ctor-realm.js
@@ -0,0 +1,41 @@
+// Copyright (C) 2019 Leo Balter. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+esid: sec-Intl.DisplayNames
+description: Default [[Prototype]] value derived from realm of the newTarget
+info: |
+  Intl.DisplayNames ( locales , options )
+
+  1. If NewTarget is undefined, throw a TypeError exception.
+  2. Let displayNames be ? OrdinaryCreateFromConstructor(NewTarget, "%DisplayNamesPrototype%",
+    « [[InitializedDisplayNames]], [[Locale]], [[Style]], [[Type]], [[Fallback]], [[Fields]] »).
+  ...
+  12. Let type be ? GetOption(options, "type", "string", « "language", "region", "script", "currency" », undefined).
+  13. If type is undefined, throw a TypeError exception.
+
+  OrdinaryCreateFromConstructor ( constructor, intrinsicDefaultProto [ , internalSlotsList ] )
+
+  ...
+  2. Let proto be ? GetPrototypeFromConstructor(constructor, intrinsicDefaultProto).
+  3. Return ObjectCreate(proto, internalSlotsList).
+
+  GetPrototypeFromConstructor ( constructor, intrinsicDefaultProto )
+
+  ...
+  3. Let proto be ? Get(constructor, "prototype").
+  4. If Type(proto) is not Object, then
+    a. Let realm be ? GetFunctionRealm(constructor).
+    b. Set proto to realm's intrinsic object named intrinsicDefaultProto.
+  5. Return proto.
+features: [Intl.DisplayNames, cross-realm, Reflect]
+---*/
+
+var other = $262.createRealm().global;
+var C = new other.Function();
+C.prototype = null;
+
+var o = Reflect.construct(Intl.DisplayNames, [undefined, {type: 'language'}], C);
+
+assert.sameValue(Object.getPrototypeOf(o), other.Intl.DisplayNames.prototype);
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/intl402/DisplayNames/proto.js b/js/src/tests/test262/intl402/DisplayNames/proto.js
new file mode 100644
index 0000000000..7ef279226b
--- /dev/null
+++ b/js/src/tests/test262/intl402/DisplayNames/proto.js
@@ -0,0 +1,15 @@
+// Copyright (C) 2019 Leo Balter. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+esid: sec-Intl.DisplayNames
+description: >
+  The internal prototype of Intl.DisplayNames
+features: [Intl.DisplayNames]
+---*/
+
+var proto = Object.getPrototypeOf(Intl.DisplayNames);
+
+assert.sameValue(proto, Function.prototype);
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/intl402/DisplayNames/prototype/Symbol.toStringTag.js b/js/src/tests/test262/intl402/DisplayNames/prototype/Symbol.toStringTag.js
new file mode 100644
index 0000000000..de8db1a805
--- /dev/null
+++ b/js/src/tests/test262/intl402/DisplayNames/prototype/Symbol.toStringTag.js
@@ -0,0 +1,23 @@
+// Copyright 2019 Leo Balter. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+esid: sec-intl.DisplayNames.prototype-@@tostringtag
+description: >
+  Property descriptor of DisplayNames.prototype[@@toStringTag]
+info: |
+  The initial value of the @@toStringTag property is the string value "Intl.DisplayNames".
+
+  This property has the attributes { [[Writable]]: false, [[Enumerable]]: false, [[Configurable]]: true }.
+includes: [propertyHelper.js]
+features: [Intl.DisplayNames, Symbol.toStringTag]
+---*/
+
+verifyProperty(Intl.DisplayNames.prototype, Symbol.toStringTag, {
+  value: "Intl.DisplayNames",
+  writable: false,
+  enumerable: false,
+  configurable: true
+});
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/intl402/DisplayNames/prototype/browser.js b/js/src/tests/test262/intl402/DisplayNames/prototype/browser.js
new file mode 100644
index 0000000000..e69de29bb2
--- /dev/null
+++ b/js/src/tests/test262/intl402/DisplayNames/prototype/browser.js
diff --git a/js/src/tests/test262/intl402/DisplayNames/prototype/of/browser.js b/js/src/tests/test262/intl402/DisplayNames/prototype/of/browser.js
new file mode 100644
index 0000000000..e69de29bb2
--- /dev/null
+++ b/js/src/tests/test262/intl402/DisplayNames/prototype/of/browser.js
diff --git a/js/src/tests/test262/intl402/DisplayNames/prototype/of/shell.js b/js/src/tests/test262/intl402/DisplayNames/prototype/of/shell.js
new file mode 100644
index 0000000000..e69de29bb2
--- /dev/null
+++ b/js/src/tests/test262/intl402/DisplayNames/prototype/of/shell.js
diff --git a/js/src/tests/test262/intl402/DisplayNames/prototype/of/type-calendar-invalid.js b/js/src/tests/test262/intl402/DisplayNames/prototype/of/type-calendar-invalid.js
new file mode 100644
index 0000000000..1d7fc9ff43
--- /dev/null
+++ b/js/src/tests/test262/intl402/DisplayNames/prototype/of/type-calendar-invalid.js
@@ -0,0 +1,63 @@
+// Copyright 2021 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+esid: sec-Intl.DisplayNames.prototype.of
+description: Throws a RangeError for invalid `calendar` codes
+features: [Intl.DisplayNames-v2]
+---*/
+
+var displayNames = new Intl.DisplayNames(undefined, {type: 'calendar'});
+
+assert.throws(RangeError, function() {
+  displayNames.of('00');
+}, 'insufficient length');
+
+assert.throws(RangeError, function() {
+  displayNames.of('000000000');
+}, 'excessive length');
+
+assert.throws(RangeError, function() {
+  displayNames.of('-00000000');
+}, 'leading separator (dash)');
+
+assert.throws(RangeError, function() {
+  displayNames.of('_00000000');
+}, 'leading separator (underscore)');
+
+assert.throws(RangeError, function() {
+  displayNames.of('00000000-');
+}, 'trailing separator (dash)');
+
+assert.throws(RangeError, function() {
+  displayNames.of('00000000_');
+}, 'trailing separator (underscore)');
+
+assert.throws(RangeError, function() {
+  displayNames.of(' abcdef');
+}, 'leading space');
+
+assert.throws(RangeError, function() {
+  displayNames.of('abcdef ');
+}, 'trailing space');
+
+assert.throws(RangeError, function() {
+  displayNames.of('abc def');
+}, 'interstitial space');
+
+assert.throws(RangeError, function() {
+  displayNames.of('123_abc');
+}, '2 segments, minimum length, underscore');
+
+assert.throws(RangeError, function() {
+  displayNames.of('12345678_abcdefgh');
+}, '2 segments, maximum length, underscore');
+
+assert.throws(RangeError, function() {
+  displayNames.of('123_abc_ABC');
+}, '3 segments, minimum length, underscore');
+
+assert.throws(RangeError, function() {
+  displayNames.of('12345678_abcdefgh_ABCDEFGH');
+}, '3 segments, maximum length, underscore');
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/intl402/DisplayNames/prototype/of/type-calendar-valid.js b/js/src/tests/test262/intl402/DisplayNames/prototype/of/type-calendar-valid.js
new file mode 100644
index 0000000000..9f6bb2a8d1
--- /dev/null
+++ b/js/src/tests/test262/intl402/DisplayNames/prototype/of/type-calendar-valid.js
@@ -0,0 +1,29 @@
+// Copyright 2021 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+esid: sec-Intl.DisplayNames.prototype.of
+description: Returns string value for valid `calendar` codes
+features: [Intl.DisplayNames-v2]
+---*/
+
+var displayNames = new Intl.DisplayNames(undefined, {type: 'calendar'});
+
+assert.sameValue(typeof displayNames.of('01234567'), 'string', '[0-7]');
+assert.sameValue(typeof displayNames.of('899'), 'string', '[89]');
+
+assert.sameValue(typeof displayNames.of('abcdefgh'), 'string', '[a-h]');
+assert.sameValue(typeof displayNames.of('ijklmnop'), 'string', '[i-p]');
+assert.sameValue(typeof displayNames.of('qrstuvwx'), 'string', '[q-x]');
+assert.sameValue(typeof displayNames.of('yzz'), 'string', '[yz]');
+
+assert.sameValue(typeof displayNames.of('ABCDEFGH'), 'string', '[A-H]');
+assert.sameValue(typeof displayNames.of('IJKLMNOP'), 'string', '[I-P]');
+assert.sameValue(typeof displayNames.of('QRSTUVWX'), 'string', '[Q-X]');
+assert.sameValue(typeof displayNames.of('YZZ'), 'string', '[YZ]');
+
+assert.sameValue(typeof displayNames.of('123-abc'), 'string', '2 segments, minimum length, dash');
+assert.sameValue(typeof displayNames.of('12345678-abcdefgh'), 'string', '2 segments, maximum length, dash');
+assert.sameValue(typeof displayNames.of('123-abc-ABC'), 'string', '3 segments, minimum length, dash');
+assert.sameValue(typeof displayNames.of('12345678-abcdefgh-ABCDEFGH'), 'string', '3 segments, maximum length, dash');
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/intl402/DisplayNames/prototype/of/type-datetimefield-invalid.js b/js/src/tests/test262/intl402/DisplayNames/prototype/of/type-datetimefield-invalid.js
new file mode 100644
index 0000000000..b1532a389c
--- /dev/null
+++ b/js/src/tests/test262/intl402/DisplayNames/prototype/of/type-datetimefield-invalid.js
@@ -0,0 +1,39 @@
+// Copyright 2021 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+esid: sec-Intl.DisplayNames.prototype.of
+description: Throws a RangeError for invalid `dateTimeField` codes
+features: [Intl.DisplayNames-v2]
+---*/
+
+var displayNames = new Intl.DisplayNames(undefined, {type: 'dateTimeField'});
+
+assert.throws(RangeError, function() {
+  displayNames.of('');
+}, 'empty string');
+
+assert.throws(RangeError, function() {
+  displayNames.of('timezoneName');
+}, 'timezoneName');
+
+assert.throws(RangeError, function() {
+  displayNames.of('timezonename');
+}, 'timezonename');
+
+assert.throws(RangeError, function() {
+  displayNames.of('millisecond');
+}, 'millisecond');
+
+assert.throws(RangeError, function() {
+  displayNames.of('seconds');
+}, 'seconds');
+
+assert.throws(RangeError, function() {
+  displayNames.of(' year');
+}, 'year (with leading space)');
+
+assert.throws(RangeError, function() {
+  displayNames.of('year ');
+}, 'year (with trailing space)');
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/intl402/DisplayNames/prototype/of/type-datetimefield-valid.js b/js/src/tests/test262/intl402/DisplayNames/prototype/of/type-datetimefield-valid.js
new file mode 100644
index 0000000000..d649742ed5
--- /dev/null
+++ b/js/src/tests/test262/intl402/DisplayNames/prototype/of/type-datetimefield-valid.js
@@ -0,0 +1,24 @@
+// Copyright 2021 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+esid: sec-Intl.DisplayNames.prototype.of
+description: Returns string value for valid `dateTimeField` codes
+features: [Intl.DisplayNames-v2]
+---*/
+
+var displayNames = new Intl.DisplayNames(undefined, {type: 'dateTimeField'});
+
+assert.sameValue(typeof displayNames.of('era'), 'string', 'era');
+assert.sameValue(typeof displayNames.of('year'), 'string', 'year');
+assert.sameValue(typeof displayNames.of('quarter'), 'string', 'quarter');
+assert.sameValue(typeof displayNames.of('month'), 'string', 'month');
+assert.sameValue(typeof displayNames.of('weekOfYear'), 'string', 'weekOfYear');
+assert.sameValue(typeof displayNames.of('weekday'), 'string', 'weekday');
+assert.sameValue(typeof displayNames.of('day'), 'string', 'day');
+assert.sameValue(typeof displayNames.of('dayPeriod'), 'string', 'dayPeriod');
+assert.sameValue(typeof displayNames.of('hour'), 'string', 'hour');
+assert.sameValue(typeof displayNames.of('minute'), 'string', 'minute');
+assert.sameValue(typeof displayNames.of('second'), 'string', 'second');
+assert.sameValue(typeof displayNames.of('timeZoneName'), 'string', 'timeZoneName');
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/intl402/DisplayNames/prototype/of/type-language-invalid.js b/js/src/tests/test262/intl402/DisplayNames/prototype/of/type-language-invalid.js
new file mode 100644
index 0000000000..e00ed3f1f5
--- /dev/null
+++ b/js/src/tests/test262/intl402/DisplayNames/prototype/of/type-language-invalid.js
@@ -0,0 +1,90 @@
+// Copyright (C) 2023 Igalia S.L. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+esid: sec-Intl.DisplayNames.prototype.of
+description: Throws a RangeError for invalid `language` codes
+info: |
+  12.3.3 Intl.DisplayNames.prototype.of ( code )
+
+  1. If type is "language", then
+      a. If code cannot be matched by the unicode_language_id Unicode locale nonterminal, throw a RangeError exception.
+      b. If IsStructurallyValidLanguageTag(code) is false, throw a RangeError exception.
+      c. Return CanonicalizeUnicodeLocaleId(code).
+features: [Intl.DisplayNames-v2]
+---*/
+
+var displayNames = new Intl.DisplayNames(undefined, {type: 'language'});
+
+assert.throws(RangeError, function() {
+  displayNames.of('');
+}, 'invalid language subtag - empty string');
+
+assert.throws(RangeError, function() {
+  displayNames.of('a');
+}, 'invalid language subtag - only one character');
+
+assert.throws(RangeError, function() {
+  displayNames.of('abcdefghi');
+}, 'invalid language subtag - greater than 8 characters');
+
+assert.throws(RangeError, function() {
+  displayNames.of('en-u-hebrew');
+}, 'singleton subtag');
+
+assert.throws(RangeError, function() {
+  displayNames.of('aa-aaaa-bbbb');
+}, 'multiple script subtags');
+
+assert.throws(RangeError, function() {
+  displayNames.of('aa-aaaaa-aaaaa');
+}, 'duplicate variant subtag');
+
+assert.throws(RangeError, function() {
+  displayNames.of('aa-bb-cc');
+}, 'multiple region subtags');
+
+assert.throws(RangeError, function() {
+  displayNames.of('1a');
+}, 'invalid language subtag - leading digit');
+
+assert.throws(RangeError, function() {
+  displayNames.of('aa-1a');
+}, 'leading-digit subtag of length 2');
+
+assert.throws(RangeError, function() {
+  displayNames.of('aa-1aa');
+}, 'leading-digit non-numeric subtag of length 3');
+
+assert.throws(RangeError, function() {
+  displayNames.of('@#$%@#$');
+}, 'invalid characters');
+
+assert.throws(RangeError, function() {
+  displayNames.of('en-US-');
+}, 'separator not followed by subtag');
+
+assert.throws(RangeError, function() {
+  displayNames.of('-en');
+}, 'separator at start');
+
+assert.throws(RangeError, function() {
+  displayNames.of('en--GB');
+}, 'missing subtag between separators');
+
+assert.throws(RangeError, function() {
+  displayNames.of('root');
+}, 'BCP 47-incompatible CLDR syntax ("root" instead of "und")');
+
+assert.throws(RangeError, function(){
+  displayNames.of('abcd-GB');
+}, 'BCP 47-incompatible CLDR syntax (script subtag without a language subtag)');
+
+assert.throws(RangeError, function(){
+  displayNames.of('abcd');
+}, 'BCP 47-incompatible CLDR syntax (bare script subtag)');
+
+assert.throws(RangeError, function(){
+  displayNames.of('en_GB');
+}, 'BCP 47-incompatible CLDR syntax (_ as separator)');
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/intl402/DisplayNames/prototype/of/type-language-valid.js b/js/src/tests/test262/intl402/DisplayNames/prototype/of/type-language-valid.js
new file mode 100644
index 0000000000..2b7932bf90
--- /dev/null
+++ b/js/src/tests/test262/intl402/DisplayNames/prototype/of/type-language-valid.js
@@ -0,0 +1,76 @@
+// Copyright (C) 2023 Igalia S.L. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+esid: sec-Intl.DisplayNames.prototype.of
+description: Returns string value for valid `language` codes
+features: [Intl.DisplayNames]
+---*/
+
+
+/*
+unicode_language_id = "root"    // not allowed in ES
+                      | (unicode_language_subtag
+                        (sep unicode_script_subtag)?
+                      | unicode_script_subtag)
+                      (sep unicode_region_subtag)?
+                      (sep unicode_variant_subtag)*
+ */
+
+// unicode_language_subtag = alpha{2,3} | alpha{5,8} ;
+
+var languages = [ { subtag: 'ab', description: '2 letter language_subtag' }, 
+                  { subtag: 'cde', description: '3 letter language_subtag' },
+                  { subtag: 'zzzzzzzz', description: '8 letter language_subtag'} ];
+
+// unicode_script_subtag = alpha{4} ;
+var scripts = [  {subtag: 'abcd', description: '4 letter script_subtag' },
+                 {subtag: '', description: ''} ];
+
+// unicode_region_subtag = (alpha{2} | digit{3}) ;
+var regions = [ {subtag: 'ab', description: '2 letter region_subtag' },
+                {subtag: '123', description: '3 digit region_subtag'},
+                {subtag: '', description: ''} ];
+
+// unicode_variant_subtag = (alphanum{5, 8} | digit alphanum{3}
+
+var variants = [  {subtag: 'abcde', description: '5 letter variant_subtag'}, 
+                  {subtag: 'fghijklm', description: '8 letter variant_subtag'}, 
+                  {subtag: '12345', description: '5 digit variant_subtag'},
+                  {subtag: '1nopq', description: '5 chararcter leading digit variant_subtag'},
+                  {subtag: '12345678', description: '8 digit variant_subtag'}, 
+                  {subtag: 'a2345678', description: '8 character trailing digit variant_subtag'}, 
+                  {subtag: '1abc', description: 'leading digit 4 character variant_subtag' },
+                  {subtag: '2345', description: '4 digit variant_subtag'},
+                  {subtag: '6d7e', description: 'leading digit 4 character mixed alphanum variant_subtag'},
+                  {subtag: '', description: ''} ];
+
+
+function notEmpty(subtag) {
+  return subtag !== '';
+}
+
+var displayNames = new Intl.DisplayNames(undefined, {type: 'language'});
+
+for (var l in languages) {
+  for (var s in scripts) {
+    for (var r in regions) {
+      for (var v in variants) {
+        var languageTag = [languages[l].subtag, scripts[s].subtag, regions[r].subtag, variants[v].subtag].filter(notEmpty).join('-');
+        var languageDescription = [languages[l].description, scripts[s].description, regions[r].description, variants[v].description].filter(notEmpty).join(', '); 
+
+        assert.sameValue(typeof displayNames.of(languageTag), 'string', languageDescription + ": " + languageTag);
+        if (variants[v].subtag !== ''){
+          for (var vAdditional in variants){
+            if (variants[vAdditional].subtag !== '' && vAdditional !== v){
+              languageTag += '-' + variants[vAdditional].subtag;
+              languageDescription += ", " + variants[vAdditional].description;
+              assert.sameValue(typeof displayNames.of(languageTag), 'string', languageDescription + ": " + languageTag);
+            }
+          }
+        }
+      }
+    }
+  }
+}
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/intl402/DisplayNames/prototype/of/type-region-invalid.js b/js/src/tests/test262/intl402/DisplayNames/prototype/of/type-region-invalid.js
new file mode 100644
index 0000000000..0fcce4ac7e
--- /dev/null
+++ b/js/src/tests/test262/intl402/DisplayNames/prototype/of/type-region-invalid.js
@@ -0,0 +1,85 @@
+// Copyright 2023 Igalia S.L. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+esid: sec-Intl.DisplayNames.prototype.of
+description: Throws a RangeError for invalid `region` codes
+info: |
+  12.5.1 CanonicalCodeForDisplayNames ( code )
+
+  ...
+  2. If type is "region", then
+    a. If code cannot be matched by the unicode_region_subtag Unicode locale nonterminal, throw a RangeError exception.
+    b. Return the ASCII-uppercase of code.
+features: [Intl.DisplayNames]
+---*/
+
+// https://unicode.org/reports/tr35/#unicode_region_subtag
+// unicode_region_subtag	= (alpha{2} | digit{3}) ;
+
+var displayNames = new Intl.DisplayNames(undefined, {type: 'region'});
+
+assert.throws(RangeError, function() {
+  displayNames.of('00');
+}, 'insufficient length, numeric');
+
+assert.throws(RangeError, function() {
+  displayNames.of('a');
+}, 'insufficient length, alpha');
+
+assert.throws(RangeError, function() {
+  displayNames.of('aaa');
+}, 'excessive length, alpha');
+
+assert.throws(RangeError, function() {
+  displayNames.of('1111');
+}, 'excessive length, numeric');
+
+assert.throws(RangeError, function() {
+  displayNames.of('');
+}, 'empty string');
+
+assert.throws(RangeError, function() {
+  displayNames.of('a01');
+}, 'mixed alphanumeric (alpha first, length 3)');
+
+assert.throws(RangeError, function() {
+  displayNames.of('a1');
+}, 'mixed alphanumeric (alpha first, length 2)');
+
+assert.throws(RangeError, function() {
+  displayNames.of('1a');
+}, 'mixed alphanumeric (numeric first, length 2)');
+
+assert.throws(RangeError, function() {
+  displayNames.of('1a1');
+}, 'mixed alphanumeric (numeric first, length 3)');
+
+assert.throws(RangeError, function() {
+  displayNames.of('-111');
+}, 'leading separator (dash)');
+
+assert.throws(RangeError, function() {
+  displayNames.of('_111');
+}, 'leading separator (underscore)');
+
+assert.throws(RangeError, function() {
+  displayNames.of('111-');
+}, 'trailing separator (dash)');
+
+assert.throws(RangeError, function() {
+  displayNames.of('111-');
+}, 'trailing separator (underscore)');
+
+assert.throws(RangeError, function() {
+  displayNames.of(' aa');
+}, 'leading space');
+
+assert.throws(RangeError, function() {
+  displayNames.of('aa ');
+}, 'trailing space');
+
+assert.throws(RangeError, function() {
+  displayNames.of('a c');
+}, 'interstitial space');
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/intl402/DisplayNames/prototype/prop-desc.js b/js/src/tests/test262/intl402/DisplayNames/prototype/prop-desc.js
new file mode 100644
index 0000000000..1c35488ac3
--- /dev/null
+++ b/js/src/tests/test262/intl402/DisplayNames/prototype/prop-desc.js
@@ -0,0 +1,22 @@
+// Copyright 2019 Leo Balter. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+esid: sec-Intl.DisplayNames.prototype
+description: >
+  Property descriptor of Intl.DisplayNames.prototype
+info: |
+  The value of Intl.DisplayNames.prototype is %DisplayNamesPrototype%.
+
+  This property has the attributes { [[Writable]]: false, [[Enumerable]]: false, [[Configurable]]: false }.
+includes: [propertyHelper.js]
+features: [Intl.DisplayNames]
+---*/
+
+verifyProperty(Intl.DisplayNames, "prototype", {
+  writable: false,
+  enumerable: false,
+  configurable: false,
+});
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/intl402/DisplayNames/prototype/resolvedOptions/browser.js b/js/src/tests/test262/intl402/DisplayNames/prototype/resolvedOptions/browser.js
new file mode 100644
index 0000000000..e69de29bb2
--- /dev/null
+++ b/js/src/tests/test262/intl402/DisplayNames/prototype/resolvedOptions/browser.js
diff --git a/js/src/tests/test262/intl402/DisplayNames/prototype/resolvedOptions/default-option-values.js b/js/src/tests/test262/intl402/DisplayNames/prototype/resolvedOptions/default-option-values.js
new file mode 100644
index 0000000000..96475e2ded
--- /dev/null
+++ b/js/src/tests/test262/intl402/DisplayNames/prototype/resolvedOptions/default-option-values.js
@@ -0,0 +1,82 @@
+// Copyright (C) 2019 Leo Balter. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+esid: sec-Intl.DisplayNames.prototype.resolvedOptions
+description: >
+  Default values for each option
+info: |
+  Intl.DisplayNames.prototype.resolvedOptions ()
+
+  1. Let pr be the this value.
+  2. If Type(pr) is not Object or pr does not have an [[InitializedDisplayNames]] internal slot,
+    throw a TypeError exception.
+  3. Let options be ! ObjectCreate(%ObjectPrototype%).
+  4. For each row of Table 6, except the header row, in table order, do
+    a. Let p be the Property value of the current row.
+    b. Let v be the value of pr's internal slot whose name is the Internal Slot value of the current row.
+    c. If v is not undefined, then
+      i. Perform ! CreateDataPropertyOrThrow(options, p, v).
+  6. Return options.
+
+  Table 6: Resolved Options of DisplayNames Instances
+
+  [[Locale]]: "locale"
+  [[Style]]: "style"
+  [[Type]]: "type"
+  [[Fallback]]: "fallback"
+
+  Intl.DisplayNames ( locales , options )
+
+  ...
+  7. Let matcher be ? GetOption(options, "localeMatcher", "string", « "lookup", "best fit" », "best fit").
+  ...
+  9. Let r be ResolveLocale(%DisplayNames%.[[AvailableLocales]], requestedLocales, opt,
+    %DisplayNames%.[[RelevantExtensionKeys]]).
+  10. Let style be ? GetOption(options, "style", "string", « "narrow", "short", "long" », "long").
+  ...
+  12. Let type be ? GetOption(options, "type", "string", « "language", "region", "script", "currency" », undefined).
+  13. If type is undefined, throw a TypeError exception.
+  ...
+  15. Let fallback be ? GetOption(options, "fallback", "string", « "code", "none" », "code").
+  ...
+  17. Set displayNames.[[Locale]] to the value of r.[[Locale]].
+  ...
+
+  CreateDataProperty ( O, P, V )
+
+  ...
+  3. Let newDesc be the PropertyDescriptor { [[Value]]: V, [[Writable]]: true, [[Enumerable]]: true,
+    [[Configurable]]: true }.
+  ...
+locale: [en-US]
+features: [Intl.DisplayNames]
+includes: [propertyHelper.js]
+---*/
+
+var dn = new Intl.DisplayNames('en-US', {type: 'language'});
+
+var options = dn.resolvedOptions();
+
+verifyProperty(options, 'style', {
+  value: 'long',
+  writable: true,
+  enumerable: true,
+  configurable: true
+});
+
+verifyProperty(options, 'type', {
+  value: 'language',
+  writable: true,
+  enumerable: true,
+  configurable: true
+});
+
+verifyProperty(options, 'fallback', {
+  value: 'code',
+  writable: true,
+  enumerable: true,
+  configurable: true
+});
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/intl402/DisplayNames/prototype/resolvedOptions/length.js b/js/src/tests/test262/intl402/DisplayNames/prototype/resolvedOptions/length.js
new file mode 100644
index 0000000000..402df82db0
--- /dev/null
+++ b/js/src/tests/test262/intl402/DisplayNames/prototype/resolvedOptions/length.js
@@ -0,0 +1,33 @@
+// Copyright (C) 2019 Leo Balter. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+esid: sec-Intl.DisplayNames.prototype.resolvedOptions
+description: >
+  Intl.DisplayNames.prototype.resolvedOptions.length is 0.
+info: |
+  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. Optional parameters
+  (which are indicated with brackets: [ ]) or rest parameters (which
+  are 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]
+features: [Intl.DisplayNames]
+---*/
+
+verifyProperty(Intl.DisplayNames.prototype.resolvedOptions, "length", {
+  value: 0,
+  enumerable: false,
+  writable: false,
+  configurable: true,
+});
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/intl402/DisplayNames/prototype/resolvedOptions/name.js b/js/src/tests/test262/intl402/DisplayNames/prototype/resolvedOptions/name.js
new file mode 100644
index 0000000000..91f54d44cc
--- /dev/null
+++ b/js/src/tests/test262/intl402/DisplayNames/prototype/resolvedOptions/name.js
@@ -0,0 +1,29 @@
+// Copyright (C) 2019 Leo Balter. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+esid: sec-Intl.DisplayNames.prototype.resolvedOptions
+description: >
+  Intl.DisplayNames.prototype.resolvedOptions.name is "resolvedOptions".
+info: |
+  17 ECMAScript Standard Built-in Objects:
+
+  Every built-in Function object, including constructors, that is not
+  identified as an anonymous function has a name property whose value is a
+  String.
+
+  Unless otherwise specified, the name property of a built-in Function object,
+  if it exists, has the attributes { [[Writable]]: false, [[Enumerable]]:
+  false, [[Configurable]]: true }.
+includes: [propertyHelper.js]
+features: [Intl.DisplayNames]
+---*/
+
+verifyProperty(Intl.DisplayNames.prototype.resolvedOptions, "name", {
+  value: "resolvedOptions",
+  writable: false,
+  enumerable: false,
+  configurable: true,
+});
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/intl402/DisplayNames/prototype/resolvedOptions/option-fallback.js b/js/src/tests/test262/intl402/DisplayNames/prototype/resolvedOptions/option-fallback.js
new file mode 100644
index 0000000000..2fe0d03843
--- /dev/null
+++ b/js/src/tests/test262/intl402/DisplayNames/prototype/resolvedOptions/option-fallback.js
@@ -0,0 +1,87 @@
+// Copyright (C) 2019 Leo Balter. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+esid: sec-Intl.DisplayNames.prototype.resolvedOptions
+description: >
+  Values for the fallback option
+info: |
+  Intl.DisplayNames.prototype.resolvedOptions ()
+
+  1. Let pr be the this value.
+  2. If Type(pr) is not Object or pr does not have an [[InitializedDisplayNames]] internal slot,
+    throw a TypeError exception.
+  3. Let options be ! ObjectCreate(%ObjectPrototype%).
+  4. For each row of Table 6, except the header row, in table order, do
+    a. Let p be the Property value of the current row.
+    b. Let v be the value of pr's internal slot whose name is the Internal Slot value of the current row.
+    c. If v is not undefined, then
+      i. Perform ! CreateDataPropertyOrThrow(options, p, v).
+  6. Return options.
+
+  Table 6: Resolved Options of DisplayNames Instances
+
+  [[Locale]]: "locale"
+  [[Style]]: "style"
+  [[Type]]: "type"
+  [[Fallback]]: "fallback"
+  [[LanguageDisplay]]: "languageDisplay"
+
+  Intl.DisplayNames ( locales , options )
+
+  ...
+  10. Let r be ResolveLocale(%DisplayNames%.[[AvailableLocales]], requestedLocales, opt,
+    %DisplayNames%.[[RelevantExtensionKeys]]).
+  11. Let style be ? GetOption(options, "style", "string", « "narrow", "short", "long" », "long").
+  ...
+  12. Let type be ? GetOption(options, "type", "string", « "language", "region", "script", "currency" », undefined).
+  13. If type is undefined, throw a TypeError exception.
+  ...
+  15. Let fallback be ? GetOption(options, "fallback", "string", « "code", "none" », "code").
+  ...
+  17. Set displayNames.[[Locale]] to the value of r.[[Locale]].
+  ...
+
+  CreateDataProperty ( O, P, V )
+
+  ...
+  3. Let newDesc be the PropertyDescriptor { [[Value]]: V, [[Writable]]: true, [[Enumerable]]: true,
+    [[Configurable]]: true }.
+  ...
+locale: [en-US]
+features: [Intl.DisplayNames]
+includes: [propertyHelper.js]
+---*/
+
+const fallbacks = ['code', 'none'];
+const types = ['language', 'region', 'script', 'currency'];
+
+types.forEach(type => {
+  fallbacks.forEach(fallback => {
+    const dn = new Intl.DisplayNames('en-US', { fallback, type });
+    const options = dn.resolvedOptions();
+
+    verifyProperty(options, 'fallback', {
+      value: fallback,
+      writable: true,
+      enumerable: true,
+      configurable: true
+    });
+
+    verifyProperty(options, 'type', {
+      value: type,
+      writable: true,
+      enumerable: true,
+      configurable: true
+    });
+
+    verifyProperty(options, 'style', {
+      value: 'long',
+      writable: true,
+      enumerable: true,
+      configurable: true
+    });
+  });
+});
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/intl402/DisplayNames/prototype/resolvedOptions/option-languagedisplay.js b/js/src/tests/test262/intl402/DisplayNames/prototype/resolvedOptions/option-languagedisplay.js
new file mode 100644
index 0000000000..3b3317a9d6
--- /dev/null
+++ b/js/src/tests/test262/intl402/DisplayNames/prototype/resolvedOptions/option-languagedisplay.js
@@ -0,0 +1,70 @@
+// Copyright (C) 2021 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+esid: sec-Intl.DisplayNames.prototype.resolvedOptions
+description: Values for the languageDisplay option
+info: |
+  Intl.DisplayNames.prototype.resolvedOptions ()
+
+  1. Let pr be the this value.
+  2. If Type(pr) is not Object or pr does not have an [[InitializedDisplayNames]] internal slot,
+    throw a TypeError exception.
+  3. Let options be ! ObjectCreate(%ObjectPrototype%).
+  4. For each row of Table 6, except the header row, in table order, do
+    a. Let p be the Property value of the current row.
+    b. Let v be the value of pr's internal slot whose name is the Internal Slot value of the current row.
+    c. If v is not undefined, then
+      i. Perform ! CreateDataPropertyOrThrow(options, p, v).
+  6. Return options.
+
+  Table 6: Resolved Options of DisplayNames Instances
+
+  [[Locale]]: "locale"
+  [[Style]]: "style"
+  [[Type]]: "type"
+  [[Fallback]]: "fallback"
+  [[LanguageDisplay]]: "languageDisplay"
+
+  Intl.DisplayNames ( locales , options )
+
+  ...
+  24. Let languageDisplay be ? GetOption(options, "languageDisplay", "string",
+      « "dialect", "standard" », "dialect").
+  25. If type is "language", then
+      a. Set displayNames.[[LanguageDisplay]] to languageDisplay.
+      b. Let typeFields be typeFields.[[<languageDisplay>]].
+      c. Assert: typeFields is a Record (see 1.4.3).
+  ...
+
+  CreateDataProperty ( O, P, V )
+
+  ...
+  3. Let newDesc be the PropertyDescriptor { [[Value]]: V, [[Writable]]: true, [[Enumerable]]: true,
+    [[Configurable]]: true }.
+  ...
+locale: [en-US]
+features: [Intl.DisplayNames-v2]
+includes: [propertyHelper.js]
+---*/
+
+var dn;
+
+dn = new Intl.DisplayNames('en-US', { type: 'language', languageDisplay: 'dialect' });
+
+verifyProperty(dn.resolvedOptions(), 'languageDisplay', {
+  value: 'dialect',
+  writable: true,
+  enumerable: true,
+  configurable: true
+});
+
+dn = new Intl.DisplayNames('en-US', { type: 'language', languageDisplay: 'standard' });
+
+verifyProperty(dn.resolvedOptions(), 'languageDisplay', {
+  value: 'standard',
+  writable: true,
+  enumerable: true,
+  configurable: true
+});
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/intl402/DisplayNames/prototype/resolvedOptions/option-style.js b/js/src/tests/test262/intl402/DisplayNames/prototype/resolvedOptions/option-style.js
new file mode 100644
index 0000000000..12961ca43e
--- /dev/null
+++ b/js/src/tests/test262/intl402/DisplayNames/prototype/resolvedOptions/option-style.js
@@ -0,0 +1,89 @@
+// Copyright (C) 2019 Leo Balter. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+esid: sec-Intl.DisplayNames.prototype.resolvedOptions
+description: >
+  Values for the style option
+info: |
+  Intl.DisplayNames.prototype.resolvedOptions ()
+
+  1. Let pr be the this value.
+  2. If Type(pr) is not Object or pr does not have an [[InitializedDisplayNames]] internal slot,
+    throw a TypeError exception.
+  3. Let options be ! ObjectCreate(%ObjectPrototype%).
+  4. For each row of Table 6, except the header row, in table order, do
+    a. Let p be the Property value of the current row.
+    b. Let v be the value of pr's internal slot whose name is the Internal Slot value of the current row.
+    c. If v is not undefined, then
+      i. Perform ! CreateDataPropertyOrThrow(options, p, v).
+  6. Return options.
+
+  Table 6: Resolved Options of DisplayNames Instances
+
+  [[Locale]]: "locale"
+  [[Style]]: "style"
+  [[Type]]: "type"
+  [[Fallback]]: "fallback"
+  [[LanguageDisplay]]: "languageDisplay"
+
+  Intl.DisplayNames ( locales , options )
+
+  ...
+  8. Let matcher be ? GetOption(options, "localeMatcher", "string", « "lookup", "best fit" », "best fit").
+  ...
+  10. Let r be ResolveLocale(%DisplayNames%.[[AvailableLocales]], requestedLocales, opt,
+    %DisplayNames%.[[RelevantExtensionKeys]]).
+  10. Let style be ? GetOption(options, "style", "string", « "narrow", "short", "long" », "long").
+  ...
+  12. Let type be ? GetOption(options, "type", "string", « "language", "region", "script", "currency" », undefined).
+  13. If type is undefined, throw a TypeError exception.
+  ...
+  15. Let fallback be ? GetOption(options, "fallback", "string", « "code", "none" », "code").
+  ...
+  17. Set displayNames.[[Locale]] to the value of r.[[Locale]].
+  ...
+
+  CreateDataProperty ( O, P, V )
+
+  ...
+  3. Let newDesc be the PropertyDescriptor { [[Value]]: V, [[Writable]]: true, [[Enumerable]]: true,
+    [[Configurable]]: true }.
+  ...
+locale: [en-US]
+features: [Intl.DisplayNames]
+includes: [propertyHelper.js]
+---*/
+
+const styles = ['narrow', 'short', 'long'];
+const types = ['language', 'region', 'script', 'currency'];
+
+types.forEach(type => {
+  styles.forEach(style => {
+    const dn = new Intl.DisplayNames('en-US', { style, type });
+    const options = dn.resolvedOptions();
+
+    verifyProperty(options, 'style', {
+      value: style,
+      writable: true,
+      enumerable: true,
+      configurable: true
+    });
+
+    verifyProperty(options, 'type', {
+      value: type,
+      writable: true,
+      enumerable: true,
+      configurable: true
+    });
+
+    verifyProperty(options, 'fallback', {
+      value: 'code',
+      writable: true,
+      enumerable: true,
+      configurable: true
+    });
+  });
+});
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/intl402/DisplayNames/prototype/resolvedOptions/option-type.js b/js/src/tests/test262/intl402/DisplayNames/prototype/resolvedOptions/option-type.js
new file mode 100644
index 0000000000..5bb0254f0e
--- /dev/null
+++ b/js/src/tests/test262/intl402/DisplayNames/prototype/resolvedOptions/option-type.js
@@ -0,0 +1,86 @@
+// Copyright (C) 2019 Leo Balter. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+esid: sec-Intl.DisplayNames.prototype.resolvedOptions
+description: >
+  Values for the type option
+info: |
+  Intl.DisplayNames.prototype.resolvedOptions ()
+
+  1. Let pr be the this value.
+  2. If Type(pr) is not Object or pr does not have an [[InitializedDisplayNames]] internal slot,
+    throw a TypeError exception.
+  3. Let options be ! ObjectCreate(%ObjectPrototype%).
+  4. For each row of Table 6, except the header row, in table order, do
+    a. Let p be the Property value of the current row.
+    b. Let v be the value of pr's internal slot whose name is the Internal Slot value of the current row.
+    c. If v is not undefined, then
+      i. Perform ! CreateDataPropertyOrThrow(options, p, v).
+  6. Return options.
+
+  Table 6: Resolved Options of DisplayNames Instances
+
+  [[Locale]]: "locale"
+  [[Style]]: "style"
+  [[Type]]: "type"
+  [[Fallback]]: "fallback"
+  [[LanguageDisplay]]: "languageDisplay"
+
+  Intl.DisplayNames ([ locales [ , options ]])
+
+  ...
+  8. Let matcher be ? GetOption(options, "localeMatcher", "string", « "lookup", "best fit" », "best fit").
+  ...
+  10. Let r be ResolveLocale(%DisplayNames%.[[AvailableLocales]], requestedLocales, opt,
+    %DisplayNames%.[[RelevantExtensionKeys]]).
+  11. Let style be ? GetOption(options, "style", "string", « "narrow", "short", "long" », "long").
+  ...
+  13. Let type be ? GetOption(options, "type", "string", « "language", "region", "script", "currency"»,
+      "language").
+  ...
+  15. Let fallback be ? GetOption(options, "fallback", "string", « "code", "none" », "code").
+  ...
+  17. Set displayNames.[[Locale]] to the value of r.[[Locale]].
+  ...
+
+  CreateDataProperty ( O, P, V )
+
+  ...
+  3. Let newDesc be the PropertyDescriptor { [[Value]]: V, [[Writable]]: true, [[Enumerable]]: true,
+    [[Configurable]]: true }.
+  ...
+locale: [en-US]
+features: [Intl.DisplayNames]
+includes: [propertyHelper.js]
+---*/
+
+var types = ['language', 'region', 'script', 'currency'];
+
+types.forEach(type => {
+  var dn = new Intl.DisplayNames('en-US', { type });
+  var options = dn.resolvedOptions();
+
+  verifyProperty(options, 'type', {
+    value: type,
+    writable: true,
+    enumerable: true,
+    configurable: true
+  });
+  
+  verifyProperty(options, 'fallback', {
+    value: 'code',
+    writable: true,
+    enumerable: true,
+    configurable: true
+  });
+  
+  verifyProperty(options, 'style', {
+    value: 'long',
+    writable: true,
+    enumerable: true,
+    configurable: true
+  });
+});
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/intl402/DisplayNames/prototype/resolvedOptions/prop-desc.js b/js/src/tests/test262/intl402/DisplayNames/prototype/resolvedOptions/prop-desc.js
new file mode 100644
index 0000000000..1766f5a5ce
--- /dev/null
+++ b/js/src/tests/test262/intl402/DisplayNames/prototype/resolvedOptions/prop-desc.js
@@ -0,0 +1,30 @@
+// Copyright (C) 2019 Leo Balter. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+esid: sec-Intl.DisplayNames.prototype.resolvedOptions
+description: >
+  Property descriptor of Intl.DisplayNames.prototype.resolvedOptions
+info: |
+  17 ECMAScript Standard Built-in Objects:
+
+  Every other data property described in clauses 18 through 26 and in Annex B.2
+  has the attributes { [[Writable]]: true, [[Enumerable]]: false,
+  [[Configurable]]: true } unless otherwise specified.
+includes: [propertyHelper.js]
+features: [Intl.DisplayNames]
+---*/
+
+assert.sameValue(
+  typeof Intl.DisplayNames.prototype.resolvedOptions,
+  "function",
+  "`typeof Intl.DisplayNames.prototype.resolvedOptions` is `'function'`"
+);
+
+verifyProperty(Intl.DisplayNames.prototype, "resolvedOptions", {
+  writable: true,
+  enumerable: false,
+  configurable: true,
+});
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/intl402/DisplayNames/prototype/resolvedOptions/return-object.js b/js/src/tests/test262/intl402/DisplayNames/prototype/resolvedOptions/return-object.js
new file mode 100644
index 0000000000..9f5d2f8e3d
--- /dev/null
+++ b/js/src/tests/test262/intl402/DisplayNames/prototype/resolvedOptions/return-object.js
@@ -0,0 +1,100 @@
+// Copyright (C) 2019 Leo Balter. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+esid: sec-Intl.DisplayNames.prototype.resolvedOptions
+description: >
+  Returns a new ordinary object on each call, with data properties containing values from internals
+info: |
+  Intl.DisplayNames.prototype.resolvedOptions ()
+
+  1. Let pr be the this value.
+  2. If Type(pr) is not Object or pr does not have an [[InitializedDisplayNames]] internal slot,
+    throw a TypeError exception.
+  3. Let options be ! ObjectCreate(%ObjectPrototype%).
+  4. For each row of Table 6, except the header row, in table order, do
+    a. Let p be the Property value of the current row.
+    b. Let v be the value of pr's internal slot whose name is the Internal Slot value of the current row.
+    c. If v is not undefined, then
+      i. Perform ! CreateDataPropertyOrThrow(options, p, v).
+  6. Return options.
+
+  Table 6: Resolved Options of DisplayNames Instances
+
+  [[Locale]]: "locale"
+  [[Style]]: "style"
+  [[Type]]: "type"
+  [[Fallback]]: "fallback"
+  [[LanguageDisplay]]: "languageDisplay"
+
+  Intl.DisplayNames ( locales , options )
+
+  ...
+  7. Let matcher be ? GetOption(options, "localeMatcher", "string", « "lookup", "best fit" », "best fit").
+  ...
+  9. Let r be ResolveLocale(%DisplayNames%.[[AvailableLocales]], requestedLocales, opt,
+    %DisplayNames%.[[RelevantExtensionKeys]]).
+  10. Let style be ? GetOption(options, "style", "string", « "narrow", "short", "long" », "long").
+  ...
+  12. Let type be ? GetOption(options, "type", "string", « "language", "region", "script", "currency" », undefined).
+  13. If type is undefined, throw a TypeError exception.
+  ...
+  15. Let fallback be ? GetOption(options, "fallback", "string", « "code", "none" », "code").
+  ...
+  17. Set displayNames.[[Locale]] to the value of r.[[Locale]].
+  ...
+
+  CreateDataProperty ( O, P, V )
+
+  ...
+  3. Let newDesc be the PropertyDescriptor { [[Value]]: V, [[Writable]]: true, [[Enumerable]]: true,
+    [[Configurable]]: true }.
+  ...
+locale: [en-US]
+features: [Intl.DisplayNames-v2, Reflect]
+includes: [propertyHelper.js, compareArray.js]
+---*/
+
+const dn = new Intl.DisplayNames('en-US', {type: 'language'});
+
+const options = dn.resolvedOptions();
+const other = dn.resolvedOptions();
+
+assert.notSameValue(options, other, 'each call returns a new object');
+
+assert.sameValue(Object.getPrototypeOf(options), Object.prototype, 'ordinary object #1');
+assert.sameValue(Object.getPrototypeOf(other), Object.prototype, 'ordinary object #2');
+
+assert.compareArray(
+  Reflect.ownKeys(options),
+  ['locale', 'style', 'type', 'fallback', 'languageDisplay'],
+  'all the data properties set to this object, in order of creation'
+);
+
+verifyProperty(options, 'locale', {
+  value: 'en-US',
+  writable: true,
+  enumerable: true,
+  configurable: true
+});
+
+const explicit = new Intl.DisplayNames(
+    'en', { localeMatcher: 'lookup', type: 'language' }).resolvedOptions();
+
+assert.sameValue(
+  explicit.hasOwnProperty('localeMatcher'),
+  false,
+  'the localeMatcher option is not set, option was explicitly set'
+);
+
+const extra = new Intl.DisplayNames(
+    'en', { chaos: 'yes', random: 'sure', '0': 42, type: 'language' }).resolvedOptions();
+
+assert.compareArray(
+  Reflect.ownKeys(extra),
+  ['locale', 'style', 'type', 'fallback', 'languageDisplay'],
+  'extra properties are not reflected in the resolvedOptions'
+);
+
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/intl402/DisplayNames/prototype/resolvedOptions/shell.js b/js/src/tests/test262/intl402/DisplayNames/prototype/resolvedOptions/shell.js
new file mode 100644
index 0000000000..e69de29bb2
--- /dev/null
+++ b/js/src/tests/test262/intl402/DisplayNames/prototype/resolvedOptions/shell.js
diff --git a/js/src/tests/test262/intl402/DisplayNames/prototype/resolvedOptions/this-not-object-throws.js b/js/src/tests/test262/intl402/DisplayNames/prototype/resolvedOptions/this-not-object-throws.js
new file mode 100644
index 0000000000..42cac5976e
--- /dev/null
+++ b/js/src/tests/test262/intl402/DisplayNames/prototype/resolvedOptions/this-not-object-throws.js
@@ -0,0 +1,49 @@
+// Copyright (C) 2019 Leo Balter. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+esid: sec-Intl.DisplayNames.prototype.resolvedOptions
+description: >
+  Throws a TypeError if this is not Object.
+info: |
+  Intl.DisplayNames.prototype.resolvedOptions ()
+
+  1. Let pr be the this value.
+  2. If Type(pr) is not Object or pr does not have an [[InitializedDisplayNames]] internal slot,
+    throw a TypeError exception.
+  ...
+features: [Intl.DisplayNames, Symbol]
+---*/
+
+var resolvedOptions = Intl.DisplayNames.prototype.resolvedOptions;
+
+assert.throws(TypeError, function() {
+  resolvedOptions();
+}, 'direct call');
+
+assert.throws(TypeError, function() {
+  resolvedOptions.call('en');
+}, 'string');
+
+assert.throws(TypeError, function() {
+  resolvedOptions.call(1);
+}, 'number');
+
+assert.throws(TypeError, function() {
+  resolvedOptions.call(null);
+}, 'null');
+
+assert.throws(TypeError, function() {
+  resolvedOptions.call(true);
+}, 'true');
+
+assert.throws(TypeError, function() {
+  resolvedOptions.call(false);
+}, 'false');
+
+var symbol = Symbol();
+assert.throws(TypeError, function() {
+  resolvedOptions.call(symbol);
+}, 'symbol');
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/intl402/DisplayNames/prototype/resolvedOptions/this-object-lacks-internal-throws.js b/js/src/tests/test262/intl402/DisplayNames/prototype/resolvedOptions/this-object-lacks-internal-throws.js
new file mode 100644
index 0000000000..9ad4c1517b
--- /dev/null
+++ b/js/src/tests/test262/intl402/DisplayNames/prototype/resolvedOptions/this-object-lacks-internal-throws.js
@@ -0,0 +1,43 @@
+// Copyright (C) 2019 Leo Balter. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+esid: sec-Intl.DisplayNames.prototype.resolvedOptions
+description: >
+  Throws a TypeError if this does not have an [[InitializedDisplayNames]] internal slot.
+info: |
+  Intl.DisplayNames.prototype.resolvedOptions ()
+
+  1. Let pr be the this value.
+  2. If Type(pr) is not Object or pr does not have an [[InitializedDisplayNames]] internal slot,
+    throw a TypeError exception.
+  ...
+features: [Intl.DisplayNames]
+---*/
+
+var resolvedOptions = Intl.DisplayNames.prototype.resolvedOptions;
+
+assert.throws(TypeError, function() {
+  Intl.DisplayNames.prototype.resolvedOptions();
+}, 'Intl.DisplayNames.prototype does not have the internal slot');
+
+assert.throws(TypeError, function() {
+  resolvedOptions.call({});
+}, 'ordinary object');
+
+assert.throws(TypeError, function() {
+  resolvedOptions.call(Intl.DisplayNames);
+}, 'Intl.DisplayNames does not have the internal slot');
+
+assert.throws(TypeError, function() {
+  resolvedOptions.call(Intl);
+}, 'Intl does not have the internal slot');
+
+// Not DisplayNames!!!
+var dtf = new Intl.DateTimeFormat();
+
+assert.throws(TypeError, function() {
+  resolvedOptions.call(dtf);
+}, 'resolvedOptions cannot be used with instances from different Intl ctors');
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/intl402/DisplayNames/prototype/shell.js b/js/src/tests/test262/intl402/DisplayNames/prototype/shell.js
new file mode 100644
index 0000000000..e69de29bb2
--- /dev/null
+++ b/js/src/tests/test262/intl402/DisplayNames/prototype/shell.js
diff --git a/js/src/tests/test262/intl402/DisplayNames/shell.js b/js/src/tests/test262/intl402/DisplayNames/shell.js
new file mode 100644
index 0000000000..e69de29bb2
--- /dev/null
+++ b/js/src/tests/test262/intl402/DisplayNames/shell.js
diff --git a/js/src/tests/test262/intl402/DisplayNames/undefined-newtarget-throws.js b/js/src/tests/test262/intl402/DisplayNames/undefined-newtarget-throws.js
new file mode 100644
index 0000000000..3b28c14486
--- /dev/null
+++ b/js/src/tests/test262/intl402/DisplayNames/undefined-newtarget-throws.js
@@ -0,0 +1,28 @@
+// Copyright (C) 2019 Leo Balter. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+esid: sec-Intl.DisplayNames
+description: >
+  Throws a TypeError if Intl.DisplayNames is called as a function.
+info: |
+  Intl.DisplayNames ([ locales [ , options ]])
+
+  1. If NewTarget is undefined, throw a TypeError exception.
+  ...
+features: [Intl.DisplayNames]
+---*/
+
+assert.throws(TypeError, function() {
+  Intl.DisplayNames();
+});
+
+assert.throws(TypeError, function() {
+  Intl.DisplayNames('en');
+});
+
+assert.throws(TypeError, function() {
+  Intl.DisplayNames(['en']);
+});
+
+reportCompare(0, 0);