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LibJS: Handle NumberFormat's [[UseGrouping]] option for "true" / "false"

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This is a normative change to the Intl NumberFormat V3 spec. See:
4751da5
This commit is contained in:
Timothy Flynn 2022-09-13 11:00:58 -04:00 • committed by Tim Flynn
parent 9743849ddb
commit 887dac0929
3 changed files with 24 additions and 7 deletions
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13
Userland/Libraries/LibJS/Runtime/Intl/AbstractOperations.cpp
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@ -633,12 +633,17 @@ ThrowCompletionOr<StringOrBoolean> get_string_or_boolean_option(VM& vm, Object c
// 6. Let value be ? ToString(value).
auto value_string = TRY(value.to_string(vm));
// 7. If values does not contain an element equal to value, return fallback.
auto it = find(values.begin(), values.end(), value_string);
if (it == values.end())
// 7. NOTE: For historical reasons, the strings "true" and "false" are treated the same as the boolean value true.
// 8. If value is "true" or "false", return fallback.
if (value_string.is_one_of("true"sv, "false"sv))
return fallback;
// 8. Return value.
// 9. If values does not contain an element equal to value, throw a RangeError exception.
auto it = find(values.begin(), values.end(), value_string);
if (it == values.end())
return vm.throw_completion<RangeError>(ErrorType::OptionIsNotValidValue, value_string, property.as_string());
// 10. Return value.
return StringOrBoolean { *it };
}

8
Userland/Libraries/LibJS/Tests/builtins/Intl/NumberFormat/NumberFormat.js
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@ -209,6 +209,12 @@ describe("errors", () => {
}).toThrowWithMessage(RangeError, "hello! is not a valid value for option signDisplay");
});
test("useGrouping option is invalid", () => {
expect(() => {
new Intl.NumberFormat("en", { useGrouping: "hello!" });
}).toThrowWithMessage(RangeError, "hello! is not a valid value for option useGrouping");
});
test("roundingPriority option is invalid", () => {
expect(() => {
new Intl.NumberFormat("en", { roundingPriority: "hello!" });
@ -416,7 +422,7 @@ describe("normal behavior", () => {
});
test("valid useGrouping options", () => {
["min2", "auto", "always", false, true, ""].forEach(useGrouping => {
["min2", "auto", "always", false, true, "false", "true", ""].forEach(useGrouping => {
expect(() => {
new Intl.NumberFormat("en", { useGrouping: useGrouping });
}).not.toThrow();

10
Userland/Libraries/LibJS/Tests/builtins/Intl/NumberFormat/NumberFormat.prototype.resolvedOptions.js
View file

@ -287,9 +287,15 @@ describe("correct behavior", () => {
const en4 = new Intl.NumberFormat("en", { useGrouping: true });
expect(en4.resolvedOptions().useGrouping).toBe("always");
const en5 = new Intl.NumberFormat("en", { useGrouping: "false" });
expect(en5.resolvedOptions().useGrouping).toBe("auto");
const en6 = new Intl.NumberFormat("en", { useGrouping: "true" });
expect(en6.resolvedOptions().useGrouping).toBe("auto");
["auto", "always", "min2"].forEach(useGrouping => {
const en5 = new Intl.NumberFormat("en", { useGrouping: useGrouping });
expect(en5.resolvedOptions().useGrouping).toBe(useGrouping);
const en7 = new Intl.NumberFormat("en", { useGrouping: useGrouping });
expect(en7.resolvedOptions().useGrouping).toBe(useGrouping);
});
});