In the AO DisambiguatePossibleInstants, a PlainDateTime instance is passed
to user code. This instance should have the built-in ISO 8601 calendar.
Here are some tests that ensure it does.
See tc39/proposal-temporal#2671.
In PlainYearMonth arithmetic, we need to find the end of the month when
adding a negative duration or subtracting a positive one. This end of the
month can be out of range.
Test case based on one provided by Anba. See issue:
https://github.com/tc39/proposal-temporal/issues/2700
Two issues:
1. There was a typo, the first `gen` should have been `genFn`.
2. And the last `toString` result should be `'[object Generator]'`,
because `Object.getPrototypeOf(gen) == genFn.prototype`. And the
`@@toStringTag` property of `genFn.prototype` is inherited from
`Generator.prototype[@@toStringTag]`.
That also means the "iterator-helpers" flag isn't needed for this test.
This removes several loopholes where it was possible to return particular
values from user calls that would cause infinite loops, or calculate
zero-length days.
This allows removing several tests, as calendar.dateAdd() is no longer
called in several places, and it's no longer possible to create a
situation where BigInt arithmetic is observable in NanosecondsToDays.
Note the monkeypatch of getPossibleInstantsFor in test/built-ins/Temporal/
TimeZone/prototype/getInstantFor/argument-builtin-calendar-no-array-
iteration.js.
Other than that, all the tests are basically identical.
Adds new tests to order-of-operations.js in Duration.round and
Duration.total, to exercise the code path where previous to this normative
change, relativeTo would have been converted to PlainDate 3x and 2x,
respectively.
This shortcut path now exists in all round(), since(), and until()
operations.
In Instant, PlainDate, PlainDateTime, and PlainTime, the change isn't
observable, so no tests could be added. This adds test coverage for
- Duration.p.round()
- PlainYearMonth.p.since()
- PlainYearMonth.p.until()
- ZonedDateTime.p.round()
- ZonedDateTime.p.since()
- ZonedDateTime.p.until()
As well as a few cases where we are testing that certain calendar methods
get called during a round operation, but previously were doing so with
options that now become a no-op and no longer call those calendar methods.
In those cases, round to 2 ns, rather than 1 ns.
The behavior of `/\p{RGI_Emoji}/v` and other properties of strings depends on the Unicode & Emoji version being used in the JavaScript engine. This patch adds tests verifying new additions to `RGI_Emoji` for each release of the Unicode Emoji standard are correctly matched.
