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+//-------------------------------------------------------------------------------------------------------
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+// Copyright (C) Microsoft. All rights reserved.
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+// Licensed under the MIT license. See LICENSE.txt file in the project root for full license information.
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+//-------------------------------------------------------------------------------------------------------
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+
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+WScript.LoadScriptFile("..\\UnitTestFramework\\UnitTestFramework.js");
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+
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+if (Intl.platform === undefined) {
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+ WScript.Echo("This test must be run with -IntlPlatform to enable the Intl.platform object");
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+ WScript.Quit(1);
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+} else if (WScript.Platform.INTL_LIBRARY === "winglob") {
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+ // Skip for winglob -- there is an equivalent test in ChakraFull for it
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+ WScript.Echo("pass");
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+ WScript.Quit(0);
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+}
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+
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+var platform = Intl.platform;
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+Intl.platform.useCaches = false;
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+
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+/**
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+ * Caches all methods on Intl.platform and restores them after the test executes
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+ */
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+function testSingleConstructor(Ctor, test) {
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+ return function () {
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+ const methods = Object.getOwnPropertyNames(Intl.platform);
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+ const cache = {};
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+
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+ for (const method of methods) {
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+ cache[method] = Intl.platform[method];
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+ }
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+
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+ test(Ctor);
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+
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+ for (const method of methods) {
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+ Intl.platform[method] = cache[method];
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+ }
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+ }
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+}
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+
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+/**
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+ * Creates a test for each constructor
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+ */
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+function testEachConstructor(name, test) {
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+ const ret = [];
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+ for (const Ctor of [Intl.Collator, Intl.NumberFormat, Intl.DateTimeFormat]) {
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+ ret.push({
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+ name: `${name} (using Intl.${Ctor.name})`,
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+ body: testSingleConstructor(Ctor, test)
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+ });
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+ }
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+ return ret;
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+}
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+
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+const tests = [
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+ ...testEachConstructor("Changing the default locale", function (Ctor) {
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+ platform.getDefaultLocale = () => "de-DE";
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+ assert.areEqual("de-DE", new Ctor().resolvedOptions().locale, "Default locale is respected with undefined language tag");
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+ }),
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+ ...testEachConstructor("Limiting available locales", function (Ctor) {
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+ const isXLocaleAvailableMap = {
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+ Collator: "Collator",
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+ NumberFormat: "NF",
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+ DateTimeFormat: "DTF",
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+ };
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+
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+ const mapped = isXLocaleAvailableMap[Ctor.name];
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+ assert.isNotUndefined(mapped, `Invalid test setup: no mapped name available for ${Ctor.name}`);
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+
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+ platform[`is${mapped}LocaleAvailable`] = (langtag) => ["de", "de-DE", "en", "zh", "en-UK"].includes(langtag);
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+ platform.getDefaultLocale = () => "en-UK";
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+ assert.areEqual("en", new Ctor("en-US").resolvedOptions().locale, "en-US should fall back to en");
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+ assert.areEqual("zh", new Ctor("zh-Hans").resolvedOptions().locale, "zh-Hans should fall back to zh");
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+ assert.areEqual("de-DE", new Ctor("de-DE-gregory").resolvedOptions().locale, "de-DE-gregory should fall back to de-DE");
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+ assert.areEqual("en-UK", new Ctor("sp").resolvedOptions().locale, "An unknown language tag should fall back to the default");
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+ })
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+];
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+
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+testRunner.runTests(tests, { verbose: false });
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Jack Horton