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LibJS: Implement Temporal.PlainDateTime.prototype.with()

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Linus Groh 2021-11-08 19:50:40 +00:00
parent c3c9ac93d0
commit aca2ef9e1c
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86
Userland/Libraries/LibJS/Tests/builtins/Temporal/PlainDateTime/PlainDateTime.prototype.with.js Normal file
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describe("correct behavior", () => {
test("length is 1", () => {
expect(Temporal.PlainDateTime.prototype.with).toHaveLength(1);
});
test("basic functionality", () => {
const plainDateTime = new Temporal.PlainDateTime(1970, 1, 1);
const values = [
[{ year: 2021 }, new Temporal.PlainDateTime(2021, 1, 1)],
[{ year: 2021, month: 7 }, new Temporal.PlainDateTime(2021, 7, 1)],
[{ year: 2021, month: 7, day: 6 }, new Temporal.PlainDateTime(2021, 7, 6)],
[{ year: 2021, monthCode: "M07", day: 6 }, new Temporal.PlainDateTime(2021, 7, 6)],
[
{ hour: 18, minute: 14, second: 47 },
new Temporal.PlainDateTime(1970, 1, 1, 18, 14, 47),
],
[
{
year: 2021,
month: 7,
day: 6,
hour: 18,
minute: 14,
second: 47,
millisecond: 123,
microsecond: 456,
nanosecond: 789,
},
new Temporal.PlainDateTime(2021, 7, 6, 18, 14, 47, 123, 456, 789),
],
];
for (const [arg, expected] of values) {
expect(plainDateTime.with(arg).equals(expected)).toBeTrue();
}
// Supplying the same values doesn't change the date/time, but still creates a new object
const plainDateTimeLike = {
year: plainDateTime.year,
month: plainDateTime.month,
day: plainDateTime.day,
hour: plainDateTime.hour,
minute: plainDateTime.minute,
second: plainDateTime.second,
millisecond: plainDateTime.millisecond,
microsecond: plainDateTime.microsecond,
nanosecond: plainDateTime.nanosecond,
};
expect(plainDateTime.with(plainDateTimeLike)).not.toBe(plainDateTime);
expect(plainDateTime.with(plainDateTimeLike).equals(plainDateTime)).toBeTrue();
});
});
describe("errors", () => {
test("this value must be a Temporal.PlainDateTime object", () => {
expect(() => {
Temporal.PlainDateTime.prototype.with.call("foo");
}).toThrowWithMessage(TypeError, "Not an object of type Temporal.PlainDateTime");
});
test("argument must be an object", () => {
expect(() => {
new Temporal.PlainDateTime(1970, 1, 1).with("foo");
}).toThrowWithMessage(TypeError, "foo is not an object");
expect(() => {
new Temporal.PlainDateTime(1970, 1, 1).with(42);
}).toThrowWithMessage(TypeError, "42 is not an object");
});
test("argument must have one of 'day', 'hour', 'microsecond', 'millisecond', 'minute', 'month', 'monthCode', 'nanosecond', 'second', 'year'", () => {
expect(() => {
new Temporal.PlainDateTime(1970, 1, 1).with({});
}).toThrowWithMessage(
TypeError,
"Object must have at least one of the following properties: day, hour, microsecond, millisecond, minute, month, monthCode, nanosecond, second, year"
);
});
test("argument must not have 'calendar' or 'timeZone'", () => {
expect(() => {
new Temporal.PlainDateTime(1970, 1, 1).with({ calendar: {} });
}).toThrowWithMessage(TypeError, "Object must not have a defined calendar property");
expect(() => {
new Temporal.PlainDateTime(1970, 1, 1).with({ timeZone: {} });
}).toThrowWithMessage(TypeError, "Object must not have a defined timeZone property");
});
});