auth() public method

this function MUST exit/quit the application
public auth ( ) : boolean | void
return boolean | void
 /**
  * Test for PMA\libraries\plugins\auth\AuthenticationConfig::auth
  *
  * @return void
  * @group medium
  */
 public function testAuthCaptcha()
 {
     $restoreInstance = PMA\libraries\Response::getInstance();
     $mockResponse = $this->getMockBuilder('PMA\\libraries\\Response')->disableOriginalConstructor()->setMethods(array('isAjax', 'getFooter', 'getHeader'))->getMock();
     $mockResponse->expects($this->once())->method('isAjax')->with()->will($this->returnValue(false));
     $mockResponse->expects($this->once())->method('getFooter')->with()->will($this->returnValue(new PMA\libraries\Footer()));
     $mockResponse->expects($this->once())->method('getHeader')->with()->will($this->returnValue(new PMA\libraries\Header()));
     $_REQUEST['old_usr'] = '';
     $GLOBALS['cfg']['LoginCookieRecall'] = false;
     $attrInstance = new ReflectionProperty('PMA\\libraries\\Response', '_instance');
     $attrInstance->setAccessible(true);
     $attrInstance->setValue($mockResponse);
     $GLOBALS['pmaThemeImage'] = 'test';
     $GLOBALS['cfg']['Lang'] = '';
     $GLOBALS['cfg']['AllowArbitraryServer'] = false;
     $GLOBALS['cfg']['Servers'] = array(1);
     $GLOBALS['cfg']['CaptchaLoginPrivateKey'] = 'testprivkey';
     $GLOBALS['cfg']['CaptchaLoginPublicKey'] = 'testpubkey';
     $GLOBALS['server'] = 0;
     $GLOBALS['error_handler'] = new PMA\libraries\ErrorHandler();
     ob_start();
     $this->object->auth();
     $result = ob_get_clean();
     // assertions
     $this->assertContains('<img name="imLogo" id="imLogo" src="testpma_logo.png"', $result);
     $this->assertContains('<select name="lang" class="autosubmit" lang="en" dir="ltr" ' . 'id="sel-lang">', $result);
     $this->assertContains('<form method="post" action="index.php" name="login_form" ' . 'autocomplete="off" class="disableAjax login hide js-show">', $result);
     $this->assertContains('<input type="hidden" name="server" value="0" />', $result);
     $this->assertContains('<script src="https://www.google.com/recaptcha/api.js?hl=en"' . ' async defer></script>', $result);
     $this->assertContains('<div class="g-recaptcha" data-sitekey="testpubkey">', $result);
     $attrInstance->setValue($restoreInstance);
 }
 /**
  * Test for PMA\libraries\plugins\auth\AuthenticationConfig::auth with headers
  *
  * @return void
  */
 public function testAuthHeader()
 {
     if (!defined('PMA_TEST_HEADERS')) {
         $this->markTestSkipped('Cannot redefine constant/function - missing runkit extension');
     }
     $restoreInstance = PMA\libraries\Response::getInstance();
     $mockResponse = $this->getMockBuilder('PMA\\libraries\\Response')->disableOriginalConstructor()->setMethods(array('isAjax'))->getMock();
     $mockResponse->expects($this->once())->method('isAjax')->with()->will($this->returnValue(false));
     $attrInstance = new ReflectionProperty('PMA\\libraries\\Response', '_instance');
     $attrInstance->setAccessible(true);
     $attrInstance->setValue($mockResponse);
     $_REQUEST['old_usr'] = '******';
     $GLOBALS['cfg']['Server']['LogoutURL'] = 'http://www.phpmyadmin.net/logout';
     $this->assertTrue($this->object->auth());
     $this->assertContains('Location: http://www.phpmyadmin.net/logout?PHPSESSID=', $GLOBALS['header'][0]);
     $attrInstance->setValue($restoreInstance);
 }