Inital commit for Intl.DisplayNames tests (#2404)

features.txt

@@ -149,6 +149,10 @@ regexp-match-indices
 # https://github.com/tc39/proposal-nullish-coalescing
 coalesce-expression
 
+# Intl.DisplayNames
+# https://github.com/tc39-transfer/proposal-intl-displaynames
+Intl.DisplayNames
+
 ## Standard language features
 #
 # Language features that have been included in a published version of the

test/intl402/DisplayNames/ctor-custom-get-prototype-poison-throws.js

@@ -0,0 +1,44 @@
+// 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);
+});

test/intl402/DisplayNames/ctor-custom-prototype.js

@@ -0,0 +1,37 @@
+// 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]] »).
+  ...
+
+  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 = {};
+
+var obj = Reflect.construct(Intl.DisplayNames, [], custom);
+
+assert.sameValue(Object.getPrototypeOf(obj), custom.prototype);

test/intl402/DisplayNames/ctor-default-prototype.js

@@ -0,0 +1,21 @@
+// 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]] »).
+  ...
+  27. Return displayNames.
+features: [Intl.DisplayNames]
+---*/
+
+var obj = new Intl.DisplayNames();
+
+assert.sameValue(Object.getPrototypeOf(obj), Intl.DisplayNames.prototype);

test/intl402/DisplayNames/instance-extensible.js

@@ -0,0 +1,35 @@
+// 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]] »).
+  ...
+
+  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();
+
+assert(Object.isExtensible(obj));

test/intl402/DisplayNames/length.js

@@ -0,0 +1,31 @@
+// 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 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, "length", {
+  value: 0,
+  enumerable: false,
+  writable: false,
+  configurable: true,
+});

test/intl402/DisplayNames/locales-invalid-throws.js

@@ -0,0 +1,32 @@
+// 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');

test/intl402/DisplayNames/locales-length-poison-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 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, Symbol]
+---*/
+
+var locales = {};
+
+Object.defineProperty(locales, 'length', {
+  get() {
+    throw new Test262Error();
+  }
+});
+
+assert.throws(Test262Error, () => {
+  new Intl.DisplayNames(locales);
+});

test/intl402/DisplayNames/locales-length-tolength-throws.js

@@ -0,0 +1,73 @@
+// 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');

test/intl402/DisplayNames/locales-symbol-length.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: >
+  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).
+  ...
+
+  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]
+---*/
+
+var calls = [];
+var 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);
+
+assert.compareArray(calls, ['length', '0']);

test/intl402/DisplayNames/name.js

@@ -0,0 +1,27 @@
+// 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,
+});

test/intl402/DisplayNames/options-fallback-abrupt-throws.js

@@ -0,0 +1,44 @@
+// 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. 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 = {};
+Object.defineProperty(options, 'fallback', {
+  get() { throw new Test262Error(); },
+});
+
+assert.throws(Test262Error, () => {
+  new Intl.DisplayNames('en', options);
+});

test/intl402/DisplayNames/options-fallback-invalid-throws.js

@@ -0,0 +1,73 @@
+// 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. 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).
+  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 = {
+  fallback: 'err'
+};
+
+assert.throws(RangeError, () => {
+  new Intl.DisplayNames('en', options);
+}, 'err');
+
+options.fallback = 'non';
+
+assert.throws(RangeError, () => {
+  new Intl.DisplayNames('en', options);
+}, 'non, not none');
+
+options.fallback = null;
+
+assert.throws(RangeError, () => {
+  new Intl.DisplayNames('en', options);
+}, 'null');
+
+options.fallback = '';
+
+assert.throws(RangeError, () => {
+  new Intl.DisplayNames('en', options);
+}, 'the empty string');
+
+options.fallback = ['code', 'none'];
+
+assert.throws(RangeError, () => {
+  new Intl.DisplayNames('en', options);
+}, 'an array with the valid options is not necessarily valid');

test/intl402/DisplayNames/options-fallback-toString-abrupt-throws.js

@@ -0,0 +1,70 @@
+// 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. 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 = {
+  fallback: {
+    toString() {
+      throw new Test262Error();
+    }
+  }
+};
+
+assert.throws(Test262Error, () => {
+  new Intl.DisplayNames('en', options);
+}, 'from toString');
+
+options.fallback = {
+  toString: undefined,
+  valueOf() {
+    throw new Test262Error();
+  }
+};
+
+assert.throws(Test262Error, () => {
+  new Intl.DisplayNames('en', options);
+}, 'from valueOf');
+
+options.fallback = {
+  [Symbol.toPrimitive]() {
+    throw new Test262Error();
+  }
+};
+
+assert.throws(Test262Error, () => {
+  new Intl.DisplayNames('en', options);
+}, 'from ToPrimitive');
+
+options.fallback = Symbol();
+
+assert.throws(TypeError, () => {
+  new Intl.DisplayNames('en', options);
+}, 'symbol value');

test/intl402/DisplayNames/options-fallback-valid.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: >
+  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. 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]
+---*/
+
+// results for option values verified in the tests for resolvedOptions
+
+var values = [
+  undefined,
+  'code',
+  'none'
+];
+
+for (let valid of values) {
+  let options = {
+    fallback: valid
+  };
+
+  var obj = new Intl.DisplayNames('en', options);
+
+  assert(obj instanceof Intl.DisplayNames, `instanceof check - ${valid}`);
+  assert.sameValue(Object.getPrototypeOf(obj), Intl.DisplayNames.prototype, `proto check - ${valid}`);
+}

test/intl402/DisplayNames/options-localeMatcher-abrupt-throws.js

@@ -0,0 +1,37 @@
+// 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);
+});

test/intl402/DisplayNames/options-localeMatcher-invalid-throws.js

@@ -0,0 +1,67 @@
+// 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');

test/intl402/DisplayNames/options-localeMatcher-toString-abrupt-throws.js

@@ -0,0 +1,67 @@
+// 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');

test/intl402/DisplayNames/options-localeMatcher-valid.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: >
+  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. 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]
+---*/
+
+// results for option values verified in the tests for resolvedOptions
+
+var values = [
+  undefined,
+  'lookup',
+  'best fit'
+];
+
+for (let valid of values) {
+  let options = {
+    localeMatcher: valid
+  };
+
+  var obj = new Intl.DisplayNames('en', options);
+
+  assert(obj instanceof Intl.DisplayNames, `instanceof check - ${valid}`);
+  assert.sameValue(Object.getPrototypeOf(obj), Intl.DisplayNames.prototype, `proto check - ${valid}`);
+}

test/intl402/DisplayNames/options-null-throws.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: >
+  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');

test/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. 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, '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);

test/intl402/DisplayNames/options-style-abrupt-throws.js

@@ -0,0 +1,44 @@
+// 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);
+});

test/intl402/DisplayNames/options-style-invalid-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 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');

test/intl402/DisplayNames/options-style-toString-abrupt-throws.js

@@ -0,0 +1,70 @@
+// 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');

test/intl402/DisplayNames/options-style-valid.js

@@ -0,0 +1,55 @@
+// 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. 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]
+---*/
+
+// results for option values verified in the tests for resolvedOptions
+
+var values = [
+  undefined,
+  'narrow',
+  'short',
+  'long'
+];
+
+for (let valid of values) {
+  let options = {
+    style: valid
+  };
+
+  var obj = new Intl.DisplayNames('en', options);
+
+  assert(obj instanceof Intl.DisplayNames, `instanceof check - ${valid}`);
+  assert.sameValue(Object.getPrototypeOf(obj), Intl.DisplayNames.prototype, `proto check - ${valid}`);
+}

test/intl402/DisplayNames/options-type-abrupt-throws.js

@@ -0,0 +1,44 @@
+// 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);
+});

test/intl402/DisplayNames/options-type-invalid-throws.js

@@ -0,0 +1,79 @@
+// 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. 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).
+  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 = {
+  type: 'lang'
+};
+
+assert.throws(RangeError, () => {
+  new Intl.DisplayNames('en', options);
+}, 'lang');
+
+options.type = 'day-period';
+
+assert.throws(RangeError, () => {
+  new Intl.DisplayNames('en', options);
+}, 'day-period, not dayPeriod');
+
+options.type = 'weekDay';
+
+assert.throws(RangeError, () => {
+  new Intl.DisplayNames('en', options);
+}, 'weekDay, not weekday');
+
+options.type = null;
+
+assert.throws(RangeError, () => {
+  new Intl.DisplayNames('en', options);
+}, 'null');
+
+options.type = '';
+
+assert.throws(RangeError, () => {
+  new Intl.DisplayNames('en', options);
+}, 'the empty string');
+
+options.type = ['language', 'region', 'script', 'currency', 'weekday', 'month', 'quarter', 'dayPeriod', 'dateTimeField'];
+
+assert.throws(RangeError, () => {
+  new Intl.DisplayNames('en', options);
+}, 'an array with the valid options is not necessarily valid');

test/intl402/DisplayNames/options-type-toString-abrupt-throws.js

@@ -0,0 +1,74 @@
+// 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');

test/intl402/DisplayNames/options-type-valid.js

@@ -0,0 +1,61 @@
+// 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. 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]
+---*/
+
+// results for option values verified in the tests for resolvedOptions
+
+var values = [
+  undefined,
+  'language',
+  'region',
+  'script',
+  'currency',
+  'weekday',
+  'month',
+  'quarter',
+  'dayPeriod',
+  'dateTimeField'
+];
+
+for (let valid of values) {
+  let options = {
+    type: valid
+  };
+
+  var obj = new Intl.DisplayNames('en', options);
+
+  assert(obj instanceof Intl.DisplayNames, `instanceof check - ${valid}`);
+  assert.sameValue(Object.getPrototypeOf(obj), Intl.DisplayNames.prototype, `proto check - ${valid}`);
+}

test/intl402/DisplayNames/prop-desc.js

@@ -0,0 +1,24 @@
+// 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,
+});

test/intl402/DisplayNames/proto-from-ctor-realm.js

@@ -0,0 +1,37 @@
+// 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]] »).
+  ...
+
+  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, [], C);
+
+assert.sameValue(Object.getPrototypeOf(o), other.Intl.DisplayNames.prototype);

test/intl402/DisplayNames/proto.js

@@ -0,0 +1,13 @@
+// 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);

test/intl402/DisplayNames/prototype/Symbol.toStringTag.js

@@ -0,0 +1,21 @@
+// 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
+});

test/intl402/DisplayNames/prototype/prop-desc.js

@@ -0,0 +1,20 @@
+// 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,
+});

test/intl402/DisplayNames/undefined-newtarget-throws.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: >
+  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']);
+});