[jira] [Resolved] (COLLECTIONS-799) UnmodifiableNavigableSet can be modified by pollFirst() and pollLast()

["Bruno P. Kinoshita (Jira)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/COLLECTIONS-799?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Bruno P. Kinoshita resolved COLLECTIONS-799.
--------------------------------------------
    Resolution: Fixed

> UnmodifiableNavigableSet can be modified by pollFirst() and pollLast()
> ----------------------------------------------------------------------
>
>                 Key: COLLECTIONS-799
>                 URL: https://issues.apache.org/jira/browse/COLLECTIONS-799
>             Project: Commons Collections
>          Issue Type: Bug
>          Components: Collection, Set
>    Affects Versions: 4.4
>            Reporter: Stefano Cordio
>            Assignee: Bruno P. Kinoshita
>            Priority: Major
>             Fix For: 4.5
>
>          Time Spent: 1h
>  Remaining Estimate: 0h
>
> [{{pollFirst()}}|https://docs.oracle.com/javase/7/docs/api/java/util/NavigableSet.html#pollFirst()] and [{{pollLast()}}|https://docs.oracle.com/javase/7/docs/api/java/util/NavigableSet.html#pollLast()] are successfully executed and do not throw an {{UnsupportedOperationException}} on an {{UnmodifiableNavigableSet}} instance.
> In my opinion, {{org.apache.commons.collections4.set.UnmodifiableNavigableSet}} should have an implementation similar to {{java.util.Collections.UnmodifiableNavigableSet}}, where both methods throw an {{UnsupportedOperationException}}: https://github.com/openjdk/jdk/blob/708407eddc9d52c01de02e3986c05e1c6225fa85/src/java.base/share/classes/java/util/Collections.java#L1278-L1279
> This was detected during working on https://github.com/assertj/assertj-core/pull/2328.



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