test262/test/built-ins/Temporal/PlainDate/from/calendar-fields-custom.js

36 lines
1008 B
JavaScript

// Copyright (C) 2022 Igalia, S.L. All rights reserved.
// This code is governed by the BSD license found in the LICENSE file.
/*---
esid: sec-temporal.plaindate.from
description: Verify the result of calendar.fields() is treated correctly.
includes: [compareArray.js, temporalHelpers.js]
features: [Temporal]
---*/
class CustomCalendar extends Temporal.Calendar {
constructor() {
super("iso8601");
}
dateFromFields(fields) {
assert.compareArray(Object.keys(fields), ["b", "a"]);
return new Temporal.PlainDate(2020, 7, 4);
}
fields(fields) {
assert.compareArray(fields, ["day", "month", "monthCode", "year"]);
return ["b", "a"];
}
}
const calendar = new CustomCalendar();
const actual = [];
const item = TemporalHelpers.propertyBagObserver(actual, { calendar }, "item");
const plainDate = Temporal.PlainDate.from(item);
TemporalHelpers.assertPlainDate(plainDate, 2020, 7, "M07", 4);
assert.compareArray(actual, [
"get item.calendar",
"get item.b",
"get item.a",
]);