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LibJS: Implement Intl.getCanonicalLocales

This commit is contained in:
Timothy Flynn 2021-08-25 09:41:25 -04:00 committed by Linus Groh
parent e8dd2eea74
commit 38d29a40dc
4 changed files with 103 additions and 0 deletions

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@ -175,6 +175,7 @@ namespace JS {
P(get) \
P(getBigInt64) \
P(getBigUint64) \
P(getCanonicalLocales) \
P(getDate) \
P(getDay) \
P(getFloat32) \

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@ -4,7 +4,9 @@
* SPDX-License-Identifier: BSD-2-Clause
*/
#include <LibJS/Runtime/Array.h>
#include <LibJS/Runtime/GlobalObject.h>
#include <LibJS/Runtime/Intl/AbstractOperations.h>
#include <LibJS/Runtime/Intl/DisplayNamesConstructor.h>
#include <LibJS/Runtime/Intl/Intl.h>
@ -27,6 +29,27 @@ void Intl::initialize(GlobalObject& global_object)
u8 attr = Attribute::Writable | Attribute::Configurable;
define_direct_property(vm.names.DisplayNames, global_object.intl_display_names_constructor(), attr);
define_native_function(vm.names.getCanonicalLocales, get_canonical_locales, 1, attr);
}
// 8.3.1 Intl.getCanonicalLocales ( locales ), https://tc39.es/ecma402/#sec-intl.getcanonicallocales
JS_DEFINE_NATIVE_FUNCTION(Intl::get_canonical_locales)
{
auto locales = vm.argument(0);
// 1. Let ll be ? CanonicalizeLocaleList(locales).
auto locale_list = canonicalize_locale_list(global_object, locales);
if (vm.exception())
return {};
MarkedValueList marked_locale_list { vm.heap() };
marked_locale_list.ensure_capacity(locale_list.size());
for (auto& locale : locale_list)
marked_locale_list.append(js_string(vm, move(locale)));
// 2. Return CreateArrayFromList(ll).
return Array::create_from(global_object, marked_locale_list);
}
}

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@ -17,6 +17,9 @@ public:
explicit Intl(GlobalObject&);
virtual void initialize(GlobalObject&) override;
virtual ~Intl() override = default;
private:
JS_DECLARE_NATIVE_FUNCTION(get_canonical_locales);
};
}

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@ -0,0 +1,76 @@
describe("errors", () => {
test("invalid tag", () => {
expect(() => {
Intl.getCanonicalLocales("EN_US");
}).toThrowWithMessage(RangeError, "EN_US is not a structurally valid language tag");
});
test("root tag", () => {
expect(() => {
Intl.getCanonicalLocales("root");
}).toThrowWithMessage(RangeError, "root is not a structurally valid language tag");
});
test("no language tag", () => {
expect(() => {
Intl.getCanonicalLocales("Latn");
}).toThrowWithMessage(RangeError, "Latn is not a structurally valid language tag");
});
test("duplicate variant subtags", () => {
expect(() => {
Intl.getCanonicalLocales("en-POSIX-POSIX");
}).toThrowWithMessage(
RangeError,
"en-POSIX-POSIX is not a structurally valid language tag"
);
});
test("improperly placed separator", () => {
expect(() => {
Intl.getCanonicalLocales("en-");
}).toThrowWithMessage(RangeError, "en- is not a structurally valid language tag");
expect(() => {
Intl.getCanonicalLocales("-en");
}).toThrowWithMessage(RangeError, "-en is not a structurally valid language tag");
expect(() => {
Intl.getCanonicalLocales("en--US");
}).toThrowWithMessage(RangeError, "en--US is not a structurally valid language tag");
});
test("non string or object locale", () => {
expect(() => {
Intl.getCanonicalLocales([true]);
}).toThrowWithMessage(TypeError, "true is neither an object nor a string");
});
});
describe("normal behavior", () => {
test("length is 1", () => {
expect(Intl.getCanonicalLocales).toHaveLength(1);
});
test("valid locales", () => {
expect(Intl.getCanonicalLocales([])).toEqual([]);
expect(Intl.getCanonicalLocales("EN-US")).toEqual(["en-US"]);
expect(Intl.getCanonicalLocales(["EN-US"])).toEqual(["en-US"]);
expect(Intl.getCanonicalLocales(["EN-US", "Fr"])).toEqual(["en-US", "fr"]);
expect(Intl.getCanonicalLocales("EN-lATN-US")).toEqual(["en-Latn-US"]);
expect(Intl.getCanonicalLocales("EN-US-POSIX")).toEqual(["en-US-posix"]);
expect(Intl.getCanonicalLocales("EN-LATN-US-POSIX")).toEqual(["en-Latn-US-posix"]);
});
test("duplicate locales", () => {
expect(Intl.getCanonicalLocales(["EN-US", "en-US", "en-us"])).toEqual(["en-US"]);
});
test("non-array object", () => {
expect(Intl.getCanonicalLocales({})).toEqual([]);
expect(Intl.getCanonicalLocales({ en: 123 })).toEqual([]);
expect(Intl.getCanonicalLocales(undefined)).toEqual([]);
expect(Intl.getCanonicalLocales(true)).toEqual([]);
expect(Intl.getCanonicalLocales(123)).toEqual([]);
});
});