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// |reftest| skip-if(!this.hasOwnProperty("Intl")||(winWidget&&!xulRuntime.shell)) -- Windows browser in automation doesn't pick up new time zones correctly
//
// Windows only supports a very limited set of IANA time zone names for the TZ
// environment variable.
//
// TZ format supported by Windows: "TZ=tzn[+|-]hh[:mm[:ss]][dzn]".
//
// Complete list of all IANA time zone ids matching that format.
//
// From tzdata's "northamerica" file:
// EST5EDT
// CST6CDT
// MST7MDT
// PST8PDT
//
// From tzdata's "backward" file:
// GMT+0
// GMT-0
// GMT0
//
// Also supported on Windows even though they don't match the format listed
// above.
//
// From tzdata's "backward" file:
// UCT
// UTC
//
// From tzdata's "etcetera" file:
// GMT
function inTimeZone(tzname, fn) {
setTimeZone(tzname);
try {
fn();
} finally {
setTimeZone("PST8PDT");
}
}
const timeZones = [
{ id: "EST5EDT" },
{ id: "CST6CDT" },
{ id: "MST7MDT" },
{ id: "PST8PDT" },
// ICU on non-Windows platforms doesn't accept these three time zone
// identifiers, cf. isValidOlsonID in $ICU/source/common/putil.cpp. We
// could add support for them, but it seems unlikely they're used in
// practice, so we just skip over them.
// { id: "GMT+0", normalized: "UTC" },
// { id: "GMT-0", normalized: "UTC" },
// { id: "GMT0", normalized: "UTC" },
{ id: "UCT", normalized: "UTC" },
{ id: "UTC", normalized: "UTC" },
{ id: "GMT", normalized: "UTC" },
];
for (let {id, normalized = id} of timeZones) {
inTimeZone(id, () => {
let opts = new Intl.DateTimeFormat().resolvedOptions();
assertEq(opts.timeZone, normalized);
});
}
if (typeof reportCompare === "function")
reportCompare(0, 0, "ok");