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LibJS: Implement Temporal.Instant.fromEpochSeconds()

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This commit is contained in:
Linus Groh 2021-07-09 11:51:23 +01:00
parent 9c9813c312
commit 2401e45720
4 changed files with 81 additions and 0 deletions
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48
Userland/Libraries/LibJS/Tests/builtins/Temporal/Instant/Instant.fromEpochSeconds.js Normal file
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describe("correct behavior", () => {
test("length is 1", () => {
expect(Temporal.Instant.fromEpochSeconds).toHaveLength(1);
});
test("basic functionality", () => {
expect(Temporal.Instant.fromEpochSeconds(0).epochSeconds).toBe(0);
expect(Temporal.Instant.fromEpochSeconds(1).epochSeconds).toBe(1);
expect(Temporal.Instant.fromEpochSeconds(999_999_999).epochSeconds).toBe(999_999_999);
expect(Temporal.Instant.fromEpochSeconds(8_640_000_000_000).epochSeconds).toBe(
8_640_000_000_000
);
expect(Temporal.Instant.fromEpochSeconds(-0).epochSeconds).toBe(0);
expect(Temporal.Instant.fromEpochSeconds(-1).epochSeconds).toBe(-1);
expect(Temporal.Instant.fromEpochSeconds(-999_999_999).epochSeconds).toBe(-999_999_999);
expect(Temporal.Instant.fromEpochSeconds(-8_640_000_000_000).epochSeconds).toBe(
-8_640_000_000_000
);
});
});
test("errors", () => {
test("argument must be coercible to BigInt", () => {
expect(() => {
Temporal.Instant.fromEpochSeconds(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.fromEpochSeconds("foo");
}).toThrowWithMessage(RangeError, "Cannot convert non-integral number to BigInt");
});
test("out-of-range epoch seconds value", () => {
expect(() => {
Temporal.Instant.fromEpochSeconds(8_640_000_000_001);
}).toThrowWithMessage(
RangeError,
"Invalid epoch nanoseconds value, must be in range -86400 * 10^17 to 86400 * 10^17"
);
expect(() => {
Temporal.Instant.fromEpochSeconds(-8_640_000_000_001);
}).toThrowWithMessage(
RangeError,
"Invalid epoch nanoseconds value, must be in range -86400 * 10^17 to 86400 * 10^17"
);
});
});