| // Copyright (C) 2021 Igalia, S.L. All rights reserved. |
| // This code is governed by the BSD license found in the LICENSE file. |
| |
| /*--- |
| esid: sec-temporal.instant.from |
| description: Conversion of ISO date-time strings to Temporal.Instant instances |
| features: [Temporal] |
| ---*/ |
| |
| let str = "1970-01-01T00:00"; |
| assert.throws(RangeError, () => Temporal.Instant.from(str), "bare date-time string is not an instant"); |
| str = "1970-01-01T00:00[UTC]"; |
| assert.throws(RangeError, () => Temporal.Instant.from(str), "date-time + IANA annotation is not an instant"); |
| |
| str = "1970-01-01T00:00Z"; |
| const result1 = Temporal.Instant.from(str); |
| assert.sameValue(result1.epochNanoseconds, 0n, "date-time + Z preserves exact time"); |
| |
| str = "1970-01-01T00:00+01:00"; |
| const result2 = Temporal.Instant.from(str); |
| assert.sameValue(result2.epochNanoseconds, -3600_000_000_000n, "date-time + offset preserves exact time with offset"); |
| |
| str = "1970-01-01T00:00Z[Etc/Ignored]"; |
| const result3 = Temporal.Instant.from(str); |
| assert.sameValue(result3.epochNanoseconds, 0n, "date-time + Z + IANA annotation ignores the IANA annotation"); |
| |
| str = "1970-01-01T00:00+01:00[Etc/Ignored]"; |
| const result4 = Temporal.Instant.from(str); |
| assert.sameValue(result4.epochNanoseconds, -3600_000_000_000n, "date-time + offset + IANA annotation ignores the IANA annotation"); |
