> Change the following collections to be strictly unmodifiable:
>
> - The reversed view of Collections.unmodifiableList()
> - The reversed view Collections.unmodifiableSortedSet()
>
> "Strictly unmodifiable" means that, if a mutator method is called that
> doesn't actually attempt to modify the collection, then
> UnsupportedOperationException will be thrown instead of the method returning
> normally. For example, consider the following:
>
> Collections.unmodifiableList(new ArrayList<>()).reversed().remove("x")
> Collections.unmodifiableSortedSet(new TreeSet<>()).reversed().removeIf(x
> -> false)
>
> Both of these currently return false. With this change, both will throw
> UnsupportedOperationException.
>
> This improves consistency of behavior of reversed views, which were all
> intended to be strictly unmodifiable if the backing collection is
> unmodifiable. This also improves consistency of the tests, which had some
> cases commented out because of these edge cases.
>
> See bug [JDK-8383625](https://bugs.openjdk.org/browse/JDK-8383625) for full
> discussion.
>
> ---------
> - [x] I confirm that I make this contribution in accordance with the [OpenJDK
> Interim AI Policy](https://openjdk.org/legal/ai).
Stuart Marks has updated the pull request incrementally with one additional
commit since the last revision:
Clean up "unmodifiable" data provider.
-------------
Changes:
- all: https://git.openjdk.org/jdk/pull/31177/files
- new: https://git.openjdk.org/jdk/pull/31177/files/898ea7af..4839eff1
Webrevs:
- full: https://webrevs.openjdk.org/?repo=jdk&pr=31177&range=01
- incr: https://webrevs.openjdk.org/?repo=jdk&pr=31177&range=00-01
Stats: 4 lines in 1 file changed: 0 ins; 2 del; 2 mod
Patch: https://git.openjdk.org/jdk/pull/31177.diff
Fetch: git fetch https://git.openjdk.org/jdk.git pull/31177/head:pull/31177
PR: https://git.openjdk.org/jdk/pull/31177
