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-rw-r--r--js/src/tests/test262/intl402/DisplayNames/locales-length-tolength-throws.js75
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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
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+++ 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);