Moving response construction into Controller, this will let controller classes more easily modify the response subclass they want to use.

Test case updated.

cake/libs/controller/controller.php

@@ -118,6 +118,21 @@ class Controller extends Object {
  */
 	public $request;
 
+/**
+ * An instance of a CakeResponse object that contains information about the impending response
+ *
+ * @var CakeResponse
+ */
+	public $response;
+
+
+/**
+ * The classname to use for creating the response object.
+ *
+ * @var string
+ */
+	protected $_responseClass = 'CakeResponse';
+
 /**
  * Holds pagination defaults for controller actions. The keys that can be included
  * in this array are: 'conditions', 'fields', 'order', 'limit', 'page', and 'recursive',
@@ -322,9 +337,8 @@ class Controller extends Object {
  *
  * @param CakeRequest $request Request object for this controller can be null for testing.
  *  But expect that features that use the params will not work.
- * @param CakeResponse $response Response object for this controller
  */
-	public function __construct($request = null, $response = null) {
+	public function __construct($request = null) {
 		if ($this->name === null) {
 			$r = null;
 			if (!preg_match('/(.*)Controller/i', get_class($this), $r)) {
@@ -349,7 +363,7 @@ class Controller extends Object {
 		if ($request instanceof CakeRequest) {
 			$this->_setRequest($request);
 		}
-		$this->response = $response;
+		$this->getResponse();
 		parent::__construct();
 	}
 
@@ -501,6 +515,18 @@ class Controller extends Object {
 		return true;
 	}
 
+/**
+ * Gets the response object for this controller.  Will construct the response if it has not already been built.
+ *
+ * @return CakeResponse
+ */
+	public function getResponse() {
+		if (empty($this->response)) {
+			$this->response = new $this->_responseClass(array('charset' => Configure::read('App.encoding')));
+		}
+		return $this->response;
+	}
+
 /**
  * Perform the startup process for this controller.
  * Fire the Component and Controller callbacks in the correct order.

cake/tests/cases/libs/controller/controller.test.php

@@ -856,7 +856,8 @@ class ControllerTest extends CakeTestCase {
 	function testFlash() {
 		$request = new CakeRequest('controller_posts/index');
 
-		$Controller = new Controller($request, $this->getMock('CakeResponse', array('_sendHeader')));
+		$Controller = new Controller($request);
+		$Controller->response = $this->getMock('CakeResponse', array('_sendHeader'));
 		$Controller->flash('this should work', '/flash');
 		$result = $Controller->response->body();
 
@@ -880,7 +881,8 @@ class ControllerTest extends CakeTestCase {
 		$this->assertEqual($result, $expected);
 
 		App::build(array('views' => array(TEST_CAKE_CORE_INCLUDE_PATH . 'tests' . DS . 'test_app' . DS . 'views'. DS)));
-		$Controller = new Controller(null, $this->getMock('CakeResponse', array('_sendHeader')));
+		$Controller = new Controller(null);
+		$Controller->response = $this->getMock('CakeResponse', array('_sendHeader'));
 		$Controller->flash('this should work', '/flash', 1, 'ajax2');
 		$result = $Controller->response->body();
 		$this->assertPattern('/Ajax!/', $result);
@@ -1030,11 +1032,12 @@ class ControllerTest extends CakeTestCase {
  * @return void
  */
 	function testRedirectByCode($code, $msg) {
-		$Controller = new Controller(null, $this->getMock('CakeResponse', array('header', 'statusCode')));
+		$Controller = new Controller(null);
-
+		$Controller->response = $this->getMock('CakeResponse', array('header', 'statusCode'));
 
 		$Controller->Component = new Component();
 		$Controller->Component->init($Controller);
+
 		$Controller->response->expects($this->once())->method('statusCode')
 			->with($code);
 		$Controller->response->expects($this->once())->method('header')
@@ -1051,7 +1054,8 @@ class ControllerTest extends CakeTestCase {
  * @return void
  */
 	function testRedirectByMessage($code, $msg) {
-		$Controller = new Controller(null, $this->getMock('CakeResponse', array('header', 'statusCode')));
+		$Controller = new Controller(null);
+		$Controller->response = $this->getMock('CakeResponse', array('header', 'statusCode'));
 
 		$Controller->Component = new Component();
 		$Controller->Component->init($Controller);
@@ -1072,7 +1076,8 @@ class ControllerTest extends CakeTestCase {
  * @return void
  */
 	function testRedirectTriggeringComponentsReturnNull() {
-		$Controller = new Controller(null, $this->getMock('CakeResponse', array('header', 'statusCode')));
+		$Controller = new Controller(null);
+		$Controller->response = $this->getMock('CakeResponse', array('header', 'statusCode'));
 		$Controller->Component = $this->getMock('Component');
 
 		$Controller->Component->expects($this->once())->method('beforeRedirect')->will($this->returnValue(null));
@@ -1092,7 +1097,8 @@ class ControllerTest extends CakeTestCase {
  * @return void
  */
 	function testRedirectBeforeRedirectModifyingParams() {
-		$Controller = new Controller(null, $this->getMock('CakeResponse', array('header', 'statusCode')));
+		$Controller = new Controller(null);
+		$Controller->response = $this->getMock('CakeResponse', array('header', 'statusCode'));
 		$Controller->Component = $this->getMock('Component');
 
 		$Controller->Component->expects($this->once())->method('beforeRedirect')
@@ -1414,7 +1420,8 @@ class ControllerTest extends CakeTestCase {
  * @return void
  */
 	function testControllerHttpCodes() {
-		$Controller = new Controller(null, $this->getMock('CakeResponse', array('httpCodes')));
+		$Controller = new Controller(null);
+		$Controller->response = $this->getMock('CakeResponse', array('httpCodes'));
 		$Controller->response->expects($this->at(0))->method('httpCodes')->with(null);
 		$Controller->response->expects($this->at(1))->method('httpCodes')->with(100);
 		$Controller->httpCodes();