Double dispatch error

Abstract.php

abstract class Skywire_PressRelease_Test_Controller_Adminhtml_Abstract
    extends EcomDev_PHPUnit_Test_Case_Controller
{
    const FAKE_USER_ID = 999999999;

    /**
     * Login to the admin store
     *
     * @return null
     */
    public function setUp()
    {
        $this->_fakeLogin();
        parent::setUp();
    }

    /**
     * Destroy admin session and cookies
     *
     * @return null
     */
    public function tearDown()
    {
        $adminSession = Mage::getSingleton('admin/session');
        $adminSession->unsetAll();
        $adminSession->getCookie()->delete($adminSession->getSessionName());
        parent::tearDown();
    }

    /**
     * Logged in to Magento with fake user to test an adminhtml controllers
     *
     * @return null
     */
    protected function _fakeLogin()
    {
        $this->_registerUserMock();
        Mage::getSingleton('adminhtml/url')->turnOffSecretKey();
        $session = Mage::getSingleton('admin/session');

        $session->login('fakeuser', 'fakeuser_pass');
    }

    /**
     * Creates a mock object for admin/user Magento Model
     *
     * @return My_Module_Test_Controller_Adminhtml_Controller
     */
    protected function _registerUserMock()
    {
        $user = $this->getModelMock('admin/user');
        $user->expects($this->any())
                ->method('getId')
                ->will($this->returnValue(self::FAKE_USER_ID)); 

        $this->replaceByMock('model', 'admin/user', $user);
        return $this;
    }

    /**
     * Test whether fake user successfully logged in
     *
     * @return null
     */
    public function testLoggedIn()
    {
        $this->assertTrue(Mage::getSingleton('admin/session')->isLoggedIn());
    }

    /**
     * Test whether logged user is fake
     *
     * @return null
     */
    public function testLoggedUserIsFakeUser()
    {
        $this->assertEquals(
            Mage::getSingleton('admin/session')
            ->getUser()->getId(),
            self::FAKE_USER_ID
        );
    }
}

IndexAction.php

class Company_Module_Test_Controller_Adminhtml_IndexAction
    extends Company_Module_Test_Controller_Adminhtml_Abstract
{
    /**
     * Test loading and rendering of index action
     *
     * @return null
     */
    public function testIndexAction()
    {
        $expectedRoute = 'pressrelease/adminhtml_index';
        $this->dispatch($expectedRoute);
        $this->assertRequestRoute($expectedRoute);

        $this->assertLayoutBlockRendered('grid.container');
    }
    
    public function testGridRowUrl()
    {
        $expectedRoute = 'pressrelease/adminhtml_index';
        $this->dispatch($expectedRoute);
        
        $item = Mage::getModel('pressrelease/release')->load(1);
        
        $block = $this->getLayout()->getBlock('grid.container')
                ->getChild('grid');
        
        $this->assertContains(
            $this->_getExpectations()->getExpectedUrlPart(),
            $block->getRowUrl($item)
        );
    }
}