/**
* @covers \Magento\Backend\Helper\Data::getPageHelpUrl
* @covers \Magento\Backend\Helper\Data::setPageHelpUrl
* @covers \Magento\Backend\Helper\Data::addPageHelpUrl
*/
public function testPageHelpUrl()
{
\Magento\TestFramework\Helper\Bootstrap::getObjectManager()->get('Magento\\Framework\\App\\RequestInterface')->setControllerModule('dummy')->setControllerName('index')->setActionName('test');
$expected = 'http://www.magentocommerce.com/gethelp/en_US/dummy/index/test/';
$this->assertEquals($expected, $this->_helper->getPageHelpUrl(), 'Incorrect help Url');
$this->_helper->addPageHelpUrl('dummy');
$expected .= 'dummy';
$this->assertEquals($expected, $this->_helper->getPageHelpUrl(), 'Incorrect help Url suffix');
}