Issues in Struts2 unit testing

[Krishnaraj A]

Hi Team,

Iam new to using Struts2 unit testing. Iam using the Struts 2 JUnit plugin
<http://struts.apache.org/2.3.1.2/docs/junit-plugin.html>. The normal
actions which is working fine. But I have issue when I am testing the
action which has interceptor.

<action name="MainAdminPage" class="com.action.MainAdminAction">
            <interceptor-ref name="newStack" />
            <result>/MainAdmin.jsp</result>
            <result name="Login_page">/Login.jsp</result>
</action>

When I start testing the control goes to interceptor and check all the
validation.
when it invoke "return invocation.invoke();". it throws error.
 java.lang.IllegalStateException: Action has already executed

I am not able to get the solution for the above problem. Can any one help
me in this problem to find the solution. Thanks in advance.

Thanks,
Krishna raj