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LibJS: Implement Temporal.Instant.fromEpochNanoseconds()
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parent
5872357b56
commit
ca71d99c66
Notes:
sideshowbarker
2024-07-18 10:00:26 +09:00
Author: https://github.com/linusg Commit: https://github.com/SerenityOS/serenity/commit/ca71d99c66b Pull-request: https://github.com/SerenityOS/serenity/pull/8580
@ -145,6 +145,7 @@ namespace JS {
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P(fromEntries) \
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P(fromEpochMicroseconds) \
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P(fromEpochMilliseconds) \
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P(fromEpochNanoseconds) \
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P(fromEpochSeconds) \
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P(fround) \
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P(gc) \
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@ -30,6 +30,7 @@ void InstantConstructor::initialize(GlobalObject& global_object)
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define_native_function(vm.names.fromEpochSeconds, from_epoch_seconds, 1, attr);
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define_native_function(vm.names.fromEpochMilliseconds, from_epoch_milliseconds, 1, attr);
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define_native_function(vm.names.fromEpochMicroseconds, from_epoch_microseconds, 1, attr);
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define_native_function(vm.names.fromEpochNanoseconds, from_epoch_nanoseconds, 1, attr);
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define_direct_property(vm.names.length, Value(1), Attribute::Configurable);
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}
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@ -139,4 +140,22 @@ JS_DEFINE_NATIVE_FUNCTION(InstantConstructor::from_epoch_microseconds)
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return create_temporal_instant(global_object, *epoch_nanoseconds);
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}
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// 8.2.6 Temporal.Instant.fromEpochNanoseconds ( epochNanoseconds )
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JS_DEFINE_NATIVE_FUNCTION(InstantConstructor::from_epoch_nanoseconds)
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{
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// 1. Set epochNanoseconds to ? ToBigInt(epochNanoseconds).
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auto* epoch_nanoseconds = vm.argument(0).to_bigint(global_object);
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if (vm.exception())
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return {};
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// 2. If ! IsValidEpochNanoseconds(epochNanoseconds) is false, throw a RangeError exception.
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if (!is_valid_epoch_nanoseconds(*epoch_nanoseconds)) {
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vm.throw_exception<RangeError>(global_object, ErrorType::TemporalInvalidEpochNanoseconds);
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return {};
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}
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// 3. Return ? CreateTemporalInstant(epochNanoseconds).
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return create_temporal_instant(global_object, *epoch_nanoseconds);
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}
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}
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@ -27,6 +27,7 @@ private:
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JS_DECLARE_NATIVE_FUNCTION(from_epoch_seconds);
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JS_DECLARE_NATIVE_FUNCTION(from_epoch_milliseconds);
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JS_DECLARE_NATIVE_FUNCTION(from_epoch_microseconds);
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JS_DECLARE_NATIVE_FUNCTION(from_epoch_nanoseconds);
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};
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}
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@ -0,0 +1,51 @@
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describe("correct behavior", () => {
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test("length is 1", () => {
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expect(Temporal.Instant.fromEpochNanoseconds).toHaveLength(1);
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});
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test("basic functionality", () => {
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expect(Temporal.Instant.fromEpochNanoseconds(0n).epochNanoseconds).toBe(0n);
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expect(Temporal.Instant.fromEpochNanoseconds(1n).epochNanoseconds).toBe(1n);
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expect(Temporal.Instant.fromEpochNanoseconds(999_999_999n).epochNanoseconds).toBe(
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999_999_999n
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);
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expect(
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Temporal.Instant.fromEpochNanoseconds(8_640_000_000_000_000_000_000n).epochNanoseconds
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).toBe(8_640_000_000_000_000_000_000n);
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expect(Temporal.Instant.fromEpochNanoseconds(-0n).epochNanoseconds).toBe(0n);
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expect(Temporal.Instant.fromEpochNanoseconds(-1n).epochNanoseconds).toBe(-1n);
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expect(Temporal.Instant.fromEpochNanoseconds(-999_999_999n).epochNanoseconds).toBe(
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-999_999_999n
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);
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expect(
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Temporal.Instant.fromEpochNanoseconds(-8_640_000_000_000_000_000_000n).epochNanoseconds
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).toBe(-8_640_000_000_000_000_000_000n);
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});
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});
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test("errors", () => {
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test("argument must be coercible to BigInt", () => {
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expect(() => {
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Temporal.Instant.fromEpochNanoseconds(123);
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}).toThrowWithMessage(TypeError, "Cannot convert number to BigInt");
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expect(() => {
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Temporal.Instant.fromEpochNanoseconds("foo");
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}).toThrowWithMessage(SyntaxError, "Invalid value for BigInt: foo");
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});
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test("out-of-range epoch nanoseconds value", () => {
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expect(() => {
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Temporal.Instant.fromEpochNanoseconds(8_640_000_000_000_000_000_001n);
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}).toThrowWithMessage(
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RangeError,
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"Invalid epoch nanoseconds value, must be in range -86400 * 10^17 to 86400 * 10^17"
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);
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expect(() => {
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Temporal.Instant.fromEpochNanoseconds(-8_640_000_000_000_000_000_001n);
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}).toThrowWithMessage(
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RangeError,
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"Invalid epoch nanoseconds value, must be in range -86400 * 10^17 to 86400 * 10^17"
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);
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});
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});
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