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LibJS: Start implementing Temporal.PlainDateTime

This commit adds the PlainDateTime object itself, its constructor and
prototype (currently empty), and the CreateTemporalDateTime abstract
operation.
This commit is contained in:
Linus Groh 2021-07-22 19:47:07 +01:00
parent 42b6bffbf2
commit 4be3196882
12 changed files with 416 additions and 5 deletions

View file

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describe("errors", () => {
test("called without new", () => {
expect(() => {
Temporal.PlainDateTime();
}).toThrowWithMessage(
TypeError,
"Temporal.PlainDateTime constructor must be called with 'new'"
);
});
test("cannot pass Infinity", () => {
for (let i = 0; i < 9; ++i) {
const args = Array(9).fill(0);
args[i] = Infinity;
expect(() => {
new Temporal.PlainDateTime(...args);
}).toThrowWithMessage(RangeError, "Invalid plain date time");
args[i] = -Infinity;
expect(() => {
new Temporal.PlainDateTime(...args);
}).toThrowWithMessage(RangeError, "Invalid plain date time");
}
});
test("cannot pass invalid ISO date or time", () => {
// NOTE: The year max value is 3 more than in the polyfill, but they incorrectly seem to
// use ISOYearMonthWithinLimits, which AFAICT isn't used for PlainDate{,Time} in the spec.
// ¯\_(ツ)_/¯
const badValues = [275764, 0, 0, 24, 60, 60, 1000, 1000, 1000];
for (let i = 0; i < 9; ++i) {
const args = [0, 1, 1, 0, 0, 0, 0, 0, 0];
args[i] = badValues[i];
console.log(args);
expect(() => {
new Temporal.PlainDateTime(...args);
}).toThrowWithMessage(RangeError, "Invalid plain date time");
}
});
});
describe("normal behavior", () => {
test("length is 3", () => {
expect(Temporal.PlainDateTime).toHaveLength(3);
});
test("basic functionality", () => {
const plainDateTime = new Temporal.PlainDateTime(2021, 7, 22, 19, 46, 32, 123, 456, 789);
expect(typeof plainDateTime).toBe("object");
expect(plainDateTime).toBeInstanceOf(Temporal.PlainDateTime);
expect(Object.getPrototypeOf(plainDateTime)).toBe(Temporal.PlainDateTime.prototype);
});
});