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 <?php
 /**
  * Zend Framework
  *
  * LICENSE
  *
  * This source file is subject to the new BSD license that is bundled
  * with this package in the file LICENSE.txt.
  * It is also available through the world-wide-web at this URL:
  * http://framework.zend.com/license/new-bsd
  * If you did not receive a copy of the license and are unable to
  * obtain it through the world-wide-web, please send an email
  * to license@zend.com so we can send you a copy immediately.
  *
  * @category   Zend
  * @package    Zend_Test
  * @subpackage PHPUnit
  * @copyright  Copyright (c) 2005-2015 Zend Technologies USA Inc. (http://www.zend.com)
  * @license    http://framework.zend.com/license/new-bsd     New BSD License
  * @version    $Id$
  */
 
 /**
  * Response header PHPUnit Constraint
  *
  * @uses       PHPUnit_Framework_Constraint
  * @category   Zend
  * @package    Zend_Test
  * @subpackage PHPUnit
  * @copyright  Copyright (c) 2005-2015 Zend Technologies USA Inc. (http://www.zend.com)
  * @license    http://framework.zend.com/license/new-bsd     New BSD License
  */
 class Zend_Test_PHPUnit_Constraint_ResponseHeader34 extends PHPUnit_Framework_Constraint
 {
     /**#@+
      * Assertion type constants
      */
     const ASSERT_RESPONSE_CODE   = 'assertResponseCode';
     const ASSERT_HEADER          = 'assertHeader';
     const ASSERT_HEADER_CONTAINS = 'assertHeaderContains';
     const ASSERT_HEADER_REGEX    = 'assertHeaderRegex';
     /**#@-*/
 
     /**
      * Current assertion type
      * @var string
      */
     protected $_assertType      = null;
 
     /**
      * Available assertion types
      * @var array
      */
     protected $_assertTypes     = array(
         self::ASSERT_RESPONSE_CODE,
         self::ASSERT_HEADER,
         self::ASSERT_HEADER_CONTAINS,
         self::ASSERT_HEADER_REGEX,
     );
 
     /**
      * @var int Response code
      */
     protected $_code              = 200;
     
     /**
      * @var int Actual response code
      */
     protected $_actualCode        = null;
 
     /**
      * @var string Header
      */
     protected $_header            = null;
 
     /**
      * @var string pattern against which to compare header content
      */
     protected $_match             = null;
 
     /**
      * Whether or not assertion is negated
      * @var bool
      */
     protected $_negate            = false;
 
     /**
      * Constructor; setup constraint state
      *
      * @return void
      */
     public function __construct()
     {
     }
 
     /**
      * Indicate negative match
      *
      * @param  bool $flag
      * @return void
      */
     public function setNegate($flag = true)
     {
         $this->_negate = $flag;
     }
 
     /**
      * Evaluate an object to see if it fits the constraints
      *
      * @param  Zend_Controller_Response_Abstract $other String to examine
      * @param  null|string Assertion type
      * @return bool
      */
     public function evaluate($other, $assertType = null)
     {
         if (!$other instanceof Zend_Controller_Response_Abstract) {
             // require_once 'Zend/Test/PHPUnit/Constraint/Exception.php';
             throw new Zend_Test_PHPUnit_Constraint_Exception('Header constraint assertions require a response object');
         }
 
         if (strstr($assertType, 'Not')) {
             $this->setNegate(true);
             $assertType = str_replace('Not', '', $assertType);
         }
 
         if (!in_array($assertType, $this->_assertTypes)) {
             // require_once 'Zend/Test/PHPUnit/Constraint/Exception.php';
             throw new Zend_Test_PHPUnit_Constraint_Exception(sprintf('Invalid assertion type "%s" provided to %s constraint', $assertType, __CLASS__));
         }
 
         $this->_assertType = $assertType;
 
         $response = $other;
         $argv     = func_get_args();
         $argc     = func_num_args();
 
         switch ($assertType) {
             case self::ASSERT_RESPONSE_CODE:
                 if (3 > $argc) {
                     // require_once 'Zend/Test/PHPUnit/Constraint/Exception.php';
                     throw new Zend_Test_PHPUnit_Constraint_Exception('No response code provided against which to match');
                 }
                 $this->_code = $code = $argv[2];
                 return ($this->_negate)
                     ? $this->_notCode($response, $code)
                     : $this->_code($response, $code);
             case self::ASSERT_HEADER:
                 if (3 > $argc) {
                     // require_once 'Zend/Test/PHPUnit/Constraint/Exception.php';
                     throw new Zend_Test_PHPUnit_Constraint_Exception('No header provided against which to match');
                 }
                 $this->_header = $header = $argv[2];
                 return ($this->_negate)
                     ? $this->_notHeader($response, $header)
                     : $this->_header($response, $header);
             case self::ASSERT_HEADER_CONTAINS:
                 if (4 > $argc) {
                     // require_once 'Zend/Test/PHPUnit/Constraint/Exception.php';
                     throw new Zend_Test_PHPUnit_Constraint_Exception('Both a header name and content to match are required for ' . __FUNCTION__);
                 }
                 $this->_header = $header = $argv[2];
                 $this->_match  = $match  = $argv[3];
                 return ($this->_negate)
                     ? $this->_notHeaderContains($response, $header, $match)
                     : $this->_headerContains($response, $header, $match);
             case self::ASSERT_HEADER_REGEX:
                 if (4 > $argc) {
                     // require_once 'Zend/Test/PHPUnit/Constraint/Exception.php';
                     throw new Zend_Test_PHPUnit_Constraint_Exception('Both a header name and content to match are required for ' . __FUNCTION__);
                 }
                 $this->_header = $header = $argv[2];
                 $this->_match  = $match  = $argv[3];
                 return ($this->_negate)
                     ? $this->_notHeaderRegex($response, $header, $match)
                     : $this->_headerRegex($response, $header, $match);
             default:
                 // require_once 'Zend/Test/PHPUnit/Constraint/Exception.php';
                 throw new Zend_Test_PHPUnit_Constraint_Exception('Invalid assertion type ' . __FUNCTION__);
         }
     }
 
     /**
      * Report Failure
      *
      * @see    PHPUnit_Framework_Constraint for implementation details
      * @param  mixed $other
      * @param  string $description Additional message to display
      * @param  bool $not
      * @return void
      * @throws PHPUnit_Framework_ExpectationFailedException
      */
     public function fail($other, $description, $not = false)
     {
         // require_once 'Zend/Test/PHPUnit/Constraint/Exception.php';
         switch ($this->_assertType) {
             case self::ASSERT_RESPONSE_CODE:
                 $failure = 'Failed asserting response code "%s"';
                 if ($this->_negate) {
                     $failure = 'Failed asserting response code IS NOT "%s"';
                 }
                 $failure = sprintf($failure, $this->_code);
                 if (!$this->_negate && $this->_actualCode) {
                     $failure .= sprintf(PHP_EOL . 'Was "%s"', $this->_actualCode);
                 }
                 break;
             case self::ASSERT_HEADER:
                 $failure = 'Failed asserting response header "%s" found';
                 if ($this->_negate) {
                     $failure = 'Failed asserting response response header "%s" WAS NOT found';
                 }
                 $failure = sprintf($failure, $this->_header);
                 break;
             case self::ASSERT_HEADER_CONTAINS:
                 $failure = 'Failed asserting response header "%s" exists and contains "%s"';
                 if ($this->_negate) {
                     $failure = 'Failed asserting response header "%s" DOES NOT CONTAIN "%s"';
                 }
                 $failure = sprintf($failure, $this->_header, $this->_match);
                 break;
             case self::ASSERT_HEADER_REGEX:
                 $failure = 'Failed asserting response header "%s" exists and matches regex "%s"';
                 if ($this->_negate) {
                     $failure = 'Failed asserting response header "%s" DOES NOT MATCH regex "%s"';
                 }
                 $failure = sprintf($failure, $this->_header, $this->_match);
                 break;
             default:
                 throw new Zend_Test_PHPUnit_Constraint_Exception('Invalid assertion type ' . __FUNCTION__);
         }
 
         if (!empty($description)) {
             $failure = $description . "\n" . $failure;
         }
 
         throw new Zend_Test_PHPUnit_Constraint_Exception($failure);
     }
 
     /**
      * Complete implementation
      *
      * @return string
      */
     public function toString()
     {
         return '';
     }
 
     /**
      * Compare response code for positive match
      *
      * @param  Zend_Controller_Response_Abstract $response
      * @param  int $code
      * @return bool
      */
     protected function _code(Zend_Controller_Response_Abstract $response, $code)
     {
         $test = $this->_getCode($response);
         $this->_actualCode = $test;
         return ($test == $code);
     }
 
     /**
      * Compare response code for negative match
      *
      * @param  Zend_Controller_Response_Abstract $response
      * @param  int $code
      * @return bool
      */
     protected function _notCode(Zend_Controller_Response_Abstract $response, $code)
     {
         $test = $this->_getCode($response);
         return ($test != $code);
     }
 
     /**
      * Retrieve response code
      *
      * @param  Zend_Controller_Response_Abstract $response
      * @return int
      */
     protected function _getCode(Zend_Controller_Response_Abstract $response)
     {
         $test = $response->getHttpResponseCode();
         if (null === $test) {
             $test = 200;
         }
         return $test;
     }
 
     /**
      * Positive check for response header presence
      *
      * @param  Zend_Controller_Response_Abstract $response
      * @param  string $header
      * @return bool
      */
     protected function _header(Zend_Controller_Response_Abstract $response, $header)
     {
         return (null !== $this->_getHeader($response, $header));
     }
 
     /**
      * Negative check for response header presence
      *
      * @param  Zend_Controller_Response_Abstract $response
      * @param  string $header
      * @return bool
      */
     protected function _notHeader(Zend_Controller_Response_Abstract $response, $header)
     {
         return (null === $this->_getHeader($response, $header));
     }
 
     /**
      * Retrieve response header
      *
      * @param  Zend_Controller_Response_Abstract $response
      * @param  string $header
      * @return string|null
      */
     protected function _getHeader(Zend_Controller_Response_Abstract $response, $header)
     {
         $headers = $response->sendHeaders();
         $header  = strtolower($header);
         if (array_key_exists($header, $headers)) {
             return $headers[$header];
         }
         return null;
     }
 
     /**
      * Positive check for header contents matching pattern
      *
      * @param  Zend_Controller_Response_Abstract $response
      * @param  string $header
      * @param  string $match
      * @return bool
      */
     protected function _headerContains(Zend_Controller_Response_Abstract $response, $header, $match)
     {
         if (null === ($fullHeader = $this->_getHeader($response, $header))) {
             return false;
         }
 
         $contents = str_replace($header . ': ', '', $fullHeader);
 
         return (strstr($contents, $match) !== false);
     }
 
     /**
      * Negative check for header contents matching pattern
      *
      * @param  Zend_Controller_Response_Abstract $response
      * @param  string $header
      * @param  string $match
      * @return bool
      */
     protected function _notHeaderContains(Zend_Controller_Response_Abstract $response, $header, $match)
     {
         if (null === ($fullHeader = $this->_getHeader($response, $header))) {
             return true;
         }
 
         $contents = str_replace($header . ': ', '', $fullHeader);
 
         return (strstr($contents, $match) === false);
     }
 
     /**
      * Positive check for header contents matching regex
      *
      * @param  Zend_Controller_Response_Abstract $response
      * @param  string $header
      * @param  string $pattern
      * @return bool
      */
     protected function _headerRegex(Zend_Controller_Response_Abstract $response, $header, $pattern)
     {
         if (null === ($fullHeader = $this->_getHeader($response, $header))) {
             return false;
         }
 
         $contents = str_replace($header . ': ', '', $fullHeader);
 
         return preg_match($pattern, $contents);
     }
 
     /**
      * Negative check for header contents matching regex
      *
      * @param  Zend_Controller_Response_Abstract $response
      * @param  string $header
      * @param  string $pattern
      * @return bool
      */
     protected function _notHeaderRegex(Zend_Controller_Response_Abstract $response, $header, $pattern)
     {
         if (null === ($fullHeader = $this->_getHeader($response, $header))) {
             return true;
         }
 
         $contents = str_replace($header . ': ', '', $fullHeader);
 
         return !preg_match($pattern, $contents);
     }
 }