@@ -0,0 +1,554 @@
+package com.twu.biblioteca.helpers;%0A%0Aimport com.twu.biblioteca.IndexPage;%0Aimport com.twu.biblioteca.OutputWriter;%0A%0Apublic class IndexPageTestHelper extends IndexPage %7B%0A%0A    private boolean isPerformActionCalled;%0A%0A    public IndexPageTestHelper(OutputWriter outputWriter) %7B%0A        super(outputWriter);%0A    %7D%0A%0A    @Override%0A    public void performAction(int inputFromUser) %7B%0A        super.performAction(inputFromUser);%0A        isPerformActionCalled = true;%0A    %7D%0A%0A    public boolean isPerformActionCalled() %7B%0A        return isPerformActionCalled;%0A    %7D%0A%7D%0A

Create a helper class which helps to test IndexPage class