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#2503 — Invalid test? S15.9.3.1_A5_T4

• bug_id: 2503
• creation_ts: 2014-02-05 19:25:00 -0800
• short_desc: Invalid test? S15.9.3.1_A5_T4
• delta_ts: 2014-07-17 23:40:52 -0700
• product: Test262
• component: ECMA-262 Tests
• version: unspecified
• rep_platform: All
• op_sys: All
• bug_status: CONFIRMED
• see_also: https://bugs.ecmascript.org/show_bug.cgi?id=330
• priority: Normal
• bug_severity: normal
• everconfirmed: true
• reporter: andyd
• assigned_to: Brian Terlson
• cc: ["andrebargull", "sam.mikes"]

---

• commentid: 7195
• comment_count: 0
• who: andyd
• bug_when: 2014-02-05 19:25:02 -0800

DESCRIPTION
Date tests using static values for verification are failing erroneously outside of PST time zone.

Date constructor uses local time so generating a date and comparing to ticks off of epoch returns a different value in differing timezones. You must explicitly specify UTC in the constructor to get a consistent result, which the current test code for all 15.9.3.1_A5 does not do.

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TEST: TestCases/ch15/15.9/15.9.3/S15.9.3.1_A5_T4.js
SOURCE: http://hg.ecmascript.org/tests/test262/file/tip/test/suite/ch15/15.9/15.9.3/S15.9.3.1_A5_T4.js
TEST SUITE DATE: 2013-06-13
PLATFORM: Mozilla/5.0 (Linux; U; en-us; KFSOWI Build/JDQ39) AppleWebKit/535.19 (KHTML, like Gecko) Silk/3.13 Safari/535.19 Silk-Accelerated=true
ERROR: Error: Unexpected exception, "Uncaught Test262 Error: #1: Incorrect value of Date" was thrown.

---

• commentid: 7197
• comment_count: 1
• who: André Bargull
• bug_when: 2014-02-06 04:40:13 -0800

See also bug 293

---

• commentid: 9254
• comment_count: 2
• who: Sam Mikes
• bug_when: 2014-07-17 23:13:41 -0700

I also observe these failures, one timezone to the east of Pacific time.

---

• commentid: 9256
• comment_count: 3
• who: Sam Mikes
• bug_when: 2014-07-17 23:40:52 -0700

Add see also bug 293[1] and bug 330[2] ; note that bug 330 includes a candidate fix which forces the use of UTC+8, which should yield correct results in all timezones and year-round.

[1]: https://bugs.ecmascript.org/show_bug.cgi?id=293
[2]: https://bugs.ecmascript.org/show_bug.cgi?id=330