[jira] Created: (COLLECTIONS-304) SetUniqueList set method use corrupts uniqness

[JIRA]

SetUniqueList set method use corrupts uniqness
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                 Key: COLLECTIONS-304
                 URL: https://issues.apache.org/jira/browse/COLLECTIONS-304
             Project: Commons Collections
          Issue Type: Bug
    Affects Versions: 3.2
         Environment: JDK 1.6/Windows/Eclipse Ganymede
            Reporter: Rafał Figas


When set method is used to put element (Strawberry) on list, then it is 
possible to add the same element (Strawberry) with add method. Also you cannot 
add element (Lemon) that has been once removed with set method. Reproduction 
code below:


List<String> list = new LinkedList<String>();
SetUniqueList decoratedList = SetUniqueList.decorate(list);

decoratedList.add("Apple");
decoratedList.add("Lemon");
decoratedList.add("Orange");

System.out.println(decoratedList.toString());

decoratedList.set(1, "Strawberry");

System.out.println(decoratedList.toString());

decoratedList.add(1, "Strawberry");

System.out.println(decoratedList.toString());

decoratedList.add(1, "Lemon");

System.out.println(decoratedList.toString());


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