Adding upstream version 124.0.1.upstream/124.0.1

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

13 files changed, 698 insertions, 0 deletions

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);