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https://issues.apache.org/jira/browse/WICKET-2118?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12675707#action_12675707
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Igor Vaynberg commented on WICKET-2118:
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Juegen, i have reverted the change to Application.

it is very unsafe because a: it allows someone to bypass authorization strategy 
entirely and b: easy to make the mistake of not calling super and not having 
auth strategy installed.

like you mentioned, we provide everything needed to easily setup a mock 
environment, so  there is no need to make wicket itself more fragile.

> Application adds a ComponentInstantiationListener that I don't want and can't 
> remove
> ------------------------------------------------------------------------------------
>
>                 Key: WICKET-2118
>                 URL: https://issues.apache.org/jira/browse/WICKET-2118
>             Project: Wicket
>          Issue Type: Improvement
>          Components: wicket
>    Affects Versions: 1.4-M3
>         Environment: OS X 10.5.6, Java 1.5.0_16
>            Reporter: Willis Blackburn
>            Assignee: Juergen Donnerstag
>             Fix For: 1.4-RC3
>
>
> I am writing a unit test that requires that I instantiate a Component.  When 
> I instantiated the Component, I discovered that it requires an Application 
> attached to the current thread.  No problem:  I instantiated the Application 
> and set it in the thread using Application.set.
> However, at this point I saw the following error:  
> "java.lang.IllegalStateException: you can only locate or create sessions in 
> the context of a request cycle."
> The problem is that Application, in its constructor, adds a component 
> instantiation listener that delegates the discovery of the authorization 
> strategy to the session, and if the session isn't present, it wants to create 
> one.  I tried setting up a session, but that requires a request cycle, which 
> requires a request and response, etc.
> I see two issues here:
> 1.  Application creates a component instantiation listener that cannot be 
> removed.  The only way to remove it is to have a reference to the listener 
> and pass it to removeComponentInstantiationListener, but the listener is 
> created anonymously inside the Application constructor.
> This could be solved by creating a method called something like 
> initializeDefaultComponentInstantiationListeners that a subclass could 
> override with a no-op.
> 2.  The listener that Application creates always creates a Session, even 
> though Session's default implementation of the method that Application calls 
> just delegates back to Application.
> This issue could be resolved by the solution to #1, since applications that 
> know that they're not going to override the authorization strategy on a 
> per-session basis could add an authorization listener that didn't create a 
> session.

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