Bug 287283 – Test fail on Mac outside US/Pacific time zone

• Component: Tools / Tests
• Status: NEW

[Johannes Odland]

Many layout tests fail on Mac configured without US/Pacific time zone:

Regressions: Unexpected text-only failures (31)
  accessibility/datetime/input-datetime-local-label-value.html [ Failure ]
  accessibility/datetime/input-time-label-value.html [ Failure ]
  http/tests/inspector/network/har/har-page-aggressive-gc.html [ Failure ]
  http/tests/inspector/network/har/har-page.html [ Failure ]
  imported/w3c/web-platform-tests/IndexedDB/structured-clone.any.html?41-60 [ Failure ]
  imported/w3c/web-platform-tests/IndexedDB/structured-clone.any.html?61-80 [ Failure ]
  imported/w3c/web-platform-tests/IndexedDB/structured-clone.any.worker.html?41-60 [ Failure ]
  imported/w3c/web-platform-tests/IndexedDB/structured-clone.any.worker.html?61-80 [ Failure ]
  inspector/model/remote-object/date.html [ Failure ]
  inspector/unit-tests/cookie.html [ Failure ]
  js/date-timeClip-large-values.html [ Failure ]
  storage/indexeddb/modern/date-basic-private.html [ Failure ]
  storage/indexeddb/modern/date-basic.html [ Failure ]
  storage/indexeddb/modern/get-keyrange-private.html [ Failure ]
  storage/indexeddb/modern/get-keyrange.html [ Failure ]
  storage/indexeddb/modern/idbobjectstore-delete-1-private.html [ Failure ]
  storage/indexeddb/modern/idbobjectstore-delete-1.html [ Failure ]


WebKit/WebKitBuild/Release/layout-test-results/accessibility/datetime/input-datetime-local-label-value-actual.txt
@@ -2,22 +2,22 @@
 
 datetime1:
 PASS: datetime.title === 'AXTitle: Meeting time:'
-AXValue: Oct 21, 2024 at 3:45 PM
+AXValue: 21 Oct 2024 at 15:45
 AXDateValue: 2024-10-21 15:45:59 +0000
 
 datetime2:
 PASS: datetime.title === 'AXTitle: Meeting time:'
-AXValue: Oct 21, 2024 at 3:45 PM
+AXValue: 21 Oct 2024 at 15:45
 AXDateValue: 2024-10-21 15:45:59 +0000
 
 datetime3:
 PASS: datetime.title === 'AXTitle: Meeting time:'
-AXValue: Oct 21, 2024 at 3:45 PM
+AXValue: 21 Oct 2024 at 15:45
 AXDateValue: 2024-10-21 15:45:59 +0000
 
 datetime4:
 PASS: datetime.title === 'AXTitle: '
-AXValue: Oct 21, 2024 at 3:45 PM
+AXValue: 21 Oct 2024 at 15:45
 AXDateValue: 2024-10-21 15:45:59 +0000

[Sam Sneddon [:gsnedders]]

(In reply to Johannes Odland from comment #0)
>   http/tests/inspector/network/har/har-page-aggressive-gc.html [ Failure ]
>   http/tests/inspector/network/har/har-page.html [ Failure ]

These are: https://bugs.webkit.org/show_bug.cgi?id=227983

Other ports already try and workaround a bunch of this, by just always using America/Los_Angeles (or equivalent):

```
Tools/Scripts/run-javascriptcore-tests
644:$ENV{TZ}="US/Pacific"; # Some tests fail if the time zone is not set to US/Pacific (<https://webkit.org/b/136363>)

Tools/Scripts/run-jsc-stress-tests
3120:# Some tests fail if the time zone is not set to US/Pacific
3123:ENV["TZ"] = "US/Pacific"; 

Tools/Scripts/webkitpy/port/base.py
775:        # FIXME: Some tests fail if the time zone is not set to US/Pacific (<https://webkit.org/b/186612>)
776:        clean_env['TZ'] = 'US/Pacific'

Tools/TestWebKitAPI/Tests/WebKitGLib/TestWebKitWebContext.cpp
1040:    g_assert_cmpstr(WebViewTest::javascriptResultToCString(value), ==, "America/Los_Angeles");

Tools/TestWebKitAPI/glib/WebKitGLib/TestMain.cpp
140:    g_setenv("TZ", "America/Los_Angeles", TRUE);

Tools/flatpak/flatpakutils.py
973:                "TZ": "America/Los_Angeles",
```

[Radar WebKit Bug Importer]

<rdar://problem/144413932>

[Sam Sneddon [:gsnedders]]

(In reply to Sam Sneddon [:gsnedders] from comment #1)
> Other ports already try and workaround a bunch of this, by just always using
> America/Los_Angeles (or equivalent):

https://bugs.webkit.org/show_bug.cgi?id=294726 just added more here