This commit verifies that ISO strings with sub-minute offsets cannot
be parsed into time zone identifiers. This was a change introduced in
the recently-merged tc39/proposal-temporal#2607, but tests for this case
were missing from #3862 (the tests for that PR).
I noticed in codecov results on an unrelated PR that this case wasn't
being tested, so fixing that mistake now.
Previously, "nested" time zone property bags were unwrapped up to one
level. That is, this object:
{
timeZone: {
// ...Temporal.TimeZone methods
}
}
would not be considered to implement the TimeZone protocol, but would have
its timeZone property used instead, if it were passed to an API that
required a TimeZone protocol object.
These nested property bags are no longer supported. Discussion:
https://github.com/tc39/proposal-temporal/issues/2104#issuecomment-1409549753
Corresponding normative PR:
https://github.com/tc39/proposal-temporal/pull/2485
