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LibJS: Implement Temporal.Instant.fromEpochMilliseconds()

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This commit is contained in:
Linus Groh 2021-07-09 12:00:31 +01:00
parent 2401e45720
commit 66ff772254
4 changed files with 81 additions and 0 deletions
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52
Userland/Libraries/LibJS/Tests/builtins/Temporal/Instant/Instant.fromEpochMilliseconds.js Normal file
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describe("correct behavior", () => {
test("length is 1", () => {
expect(Temporal.Instant.fromEpochMilliseconds).toHaveLength(1);
});
test("basic functionality", () => {
expect(Temporal.Instant.fromEpochMilliseconds(0).epochMilliseconds).toBe(0);
expect(Temporal.Instant.fromEpochMilliseconds(1).epochMilliseconds).toBe(1);
expect(Temporal.Instant.fromEpochMilliseconds(999_999_999).epochMilliseconds).toBe(
999_999_999
);
expect(
Temporal.Instant.fromEpochMilliseconds(8_640_000_000_000_000).epochMilliseconds
).toBe(8_640_000_000_000_000);
expect(Temporal.Instant.fromEpochMilliseconds(-0).epochMilliseconds).toBe(0);
expect(Temporal.Instant.fromEpochMilliseconds(-1).epochMilliseconds).toBe(-1);
expect(Temporal.Instant.fromEpochMilliseconds(-999_999_999).epochMilliseconds).toBe(
-999_999_999
);
expect(
Temporal.Instant.fromEpochMilliseconds(-8_640_000_000_000_000).epochMilliseconds
).toBe(-8_640_000_000_000_000);
});
});
test("errors", () => {
test("argument must be coercible to BigInt", () => {
expect(() => {
Temporal.Instant.fromEpochMilliseconds(1.23);
}).toThrowWithMessage(RangeError, "Cannot convert non-integral number to BigInt");
// NOTE: ToNumber is called on the argument first, so this is effectively NaN.
expect(() => {
Temporal.Instant.fromEpochMilliseconds("foo");
}).toThrowWithMessage(RangeError, "Cannot convert non-integral number to BigInt");
});
test("out-of-range epoch milliseconds value", () => {
expect(() => {
Temporal.Instant.fromEpochMilliseconds(8_640_000_000_000_001);
}).toThrowWithMessage(
RangeError,
"Invalid epoch nanoseconds value, must be in range -86400 * 10^17 to 86400 * 10^17"
);
expect(() => {
Temporal.Instant.fromEpochMilliseconds(-8_640_000_000_000_001);
}).toThrowWithMessage(
RangeError,
"Invalid epoch nanoseconds value, must be in range -86400 * 10^17 to 86400 * 10^17"
);
});
});