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LibJS: Implement Temporal.Instant.fromEpochNanoseconds()

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This commit is contained in:
Linus Groh 2021-07-09 12:20:11 +01:00
parent 5872357b56
commit ca71d99c66
4 changed files with 72 additions and 0 deletions
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51
Userland/Libraries/LibJS/Tests/builtins/Temporal/Instant/Instant.fromEpochNanoseconds.js Normal file
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describe("correct behavior", () => {
test("length is 1", () => {
expect(Temporal.Instant.fromEpochNanoseconds).toHaveLength(1);
});
test("basic functionality", () => {
expect(Temporal.Instant.fromEpochNanoseconds(0n).epochNanoseconds).toBe(0n);
expect(Temporal.Instant.fromEpochNanoseconds(1n).epochNanoseconds).toBe(1n);
expect(Temporal.Instant.fromEpochNanoseconds(999_999_999n).epochNanoseconds).toBe(
999_999_999n
);
expect(
Temporal.Instant.fromEpochNanoseconds(8_640_000_000_000_000_000_000n).epochNanoseconds
).toBe(8_640_000_000_000_000_000_000n);
expect(Temporal.Instant.fromEpochNanoseconds(-0n).epochNanoseconds).toBe(0n);
expect(Temporal.Instant.fromEpochNanoseconds(-1n).epochNanoseconds).toBe(-1n);
expect(Temporal.Instant.fromEpochNanoseconds(-999_999_999n).epochNanoseconds).toBe(
-999_999_999n
);
expect(
Temporal.Instant.fromEpochNanoseconds(-8_640_000_000_000_000_000_000n).epochNanoseconds
).toBe(-8_640_000_000_000_000_000_000n);
});
});
test("errors", () => {
test("argument must be coercible to BigInt", () => {
expect(() => {
Temporal.Instant.fromEpochNanoseconds(123);
}).toThrowWithMessage(TypeError, "Cannot convert number to BigInt");
expect(() => {
Temporal.Instant.fromEpochNanoseconds("foo");
}).toThrowWithMessage(SyntaxError, "Invalid value for BigInt: foo");
});
test("out-of-range epoch nanoseconds value", () => {
expect(() => {
Temporal.Instant.fromEpochNanoseconds(8_640_000_000_000_000_000_001n);
}).toThrowWithMessage(
RangeError,
"Invalid epoch nanoseconds value, must be in range -86400 * 10^17 to 86400 * 10^17"
);
expect(() => {
Temporal.Instant.fromEpochNanoseconds(-8_640_000_000_000_000_000_001n);
}).toThrowWithMessage(
RangeError,
"Invalid epoch nanoseconds value, must be in range -86400 * 10^17 to 86400 * 10^17"
);
});
});