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LibJS: Implement Temporal.Calendar.prototype.monthDayFromFields()

This commit is contained in:
Linus Groh 2021-08-16 18:04:58 +01:00
parent 68d07320cf
commit 31f65b8c50
7 changed files with 184 additions and 0 deletions

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describe("correct behavior", () => {
test("length is 2", () => {
expect(Temporal.Calendar.prototype.monthDayFromFields).toHaveLength(2);
});
test("basic functionality", () => {
const calendar = new Temporal.Calendar("iso8601");
const plainMonthDay = calendar.monthDayFromFields({ year: 2021, month: 7, day: 6 });
expect(plainMonthDay.calendar).toBe(calendar);
expect(plainMonthDay.monthCode).toBe("M07");
expect(plainMonthDay.day).toBe(6);
const fields = plainMonthDay.getISOFields();
expect(fields.isoYear).toBe(1972); // No, this isn't a mistake
});
test("with monthCode", () => {
const calendar = new Temporal.Calendar("iso8601");
const plainMonthDay = calendar.monthDayFromFields({ monthCode: "M07", day: 6 });
expect(plainMonthDay.calendar).toBe(calendar);
expect(plainMonthDay.monthCode).toBe("M07");
expect(plainMonthDay.day).toBe(6);
const fields = plainMonthDay.getISOFields();
expect(fields.isoYear).toBe(1972);
});
});
describe("errors", () => {
test("first argument must be an object", () => {
const calendar = new Temporal.Calendar("iso8601");
expect(() => {
calendar.monthDayFromFields(42);
}).toThrowWithMessage(TypeError, "42 is not an object");
});
test("month or monthCode field is required", () => {
const calendar = new Temporal.Calendar("iso8601");
expect(() => {
calendar.monthDayFromFields({ year: 2021 });
}).toThrowWithMessage(TypeError, "Required property month is missing or undefined");
});
test("day field is required", () => {
const calendar = new Temporal.Calendar("iso8601");
expect(() => {
calendar.monthDayFromFields({ year: 2021, month: 7 });
}).toThrowWithMessage(TypeError, "Required property day is missing or undefined");
});
test("monthCode or year field is required when month is given", () => {
const calendar = new Temporal.Calendar("iso8601");
expect(() => {
calendar.monthDayFromFields({ month: 7, day: 6 });
}).toThrowWithMessage(
TypeError,
"Required property monthCode or year is missing or undefined"
);
});
});