Adjust for test integration.

apps/basic/tests/functional/AboutCept.php

+<?php
+$I = new TestGuy($scenario);
+$I->wantTo('ensure that about works');
+$I->amOnPage('?r=site/about');
+$I->see('About', 'h1');

framework/yii/YiiBase.php

@@ -65,7 +65,7 @@ class YiiBase
 	 * @var boolean whether to search PHP include_path when autoloading unknown classes.
 	 * You may want to turn this off if you are also using autoloaders from other libraries.
 	 */
-	public static $enableIncludePath = true;
+	public static $enableIncludePath = false;
 	/**
 	 * @var \yii\console\Application|\yii\web\Application the application instance
 	 */

framework/yii/web/Response.php

@@ -35,7 +35,7 @@ class Response extends \yii\base\Response
 	 * @event ResponseEvent an event that is triggered right after [[prepare()]] is called in [[send()]].
 	 * You may respond to this event to filter the response content before it is sent to the client.
 	 */
-	const EVENT_PREPARE = 'prepare';
+	const EVENT_AFTER_PREPARE = 'afterPrepare';
 
 	const FORMAT_RAW = 'raw';
 	const FORMAT_HTML = 'html';
@@ -218,6 +218,11 @@ class Response extends \yii\base\Response
 	 */
 	public function setStatusCode($value, $text = null)
 	{
+		if ($value === null) {
+			$this->_statusCode = null;
+			$this->statusText = null;
+			return;
+		}
 		$this->_statusCode = (int)$value;
 		if ($this->getIsInvalid()) {
 			throw new InvalidParamException("The HTTP status code is invalid: $value");
@@ -249,7 +254,7 @@ class Response extends \yii\base\Response
 	{
 		$this->trigger(self::EVENT_BEFORE_SEND, new ResponseEvent($this));
 		$this->prepare();
-		$this->trigger(self::EVENT_PREPARE, new ResponseEvent($this));
+		$this->trigger(self::EVENT_AFTER_PREPARE, new ResponseEvent($this));
 		$this->sendHeaders();
 		$this->sendContent();
 		$this->trigger(self::EVENT_AFTER_SEND, new ResponseEvent($this));
@@ -319,14 +324,8 @@ class Response extends \yii\base\Response
 	 */
 	protected function sendContent()
 	{
-		if (is_array($this->content)) {
-			echo 'array()';
-		} elseif (is_object($this->content)) {
-			echo method_exists($this->content, '__toString') ? (string)$this->content : get_class($this->content);
-		} else {
 		echo $this->content;
 	}
-	}
 
 	/**
 	 * Sends a file to the browser.
@@ -721,12 +720,10 @@ class Response extends \yii\base\Response
 			}
 			if ($formatter instanceof ResponseFormatter) {
 				$formatter->format($this);
-				return;
 			} else {
 				throw new InvalidConfigException("The '{$this->format}' response formatter is invalid. It must implement the ResponseFormatter interface.");
 			}
-		}
-
+		} else {
 			switch ($this->format) {
 				case self::FORMAT_HTML:
 					$this->getHeaders()->setDefault('Content-Type', 'text/html; charset=' . $this->charset);
@@ -755,4 +752,11 @@ class Response extends \yii\base\Response
 					throw new InvalidConfigException("Unsupported response format: {$this->format}");
 			}
 		}
+
+		if (is_array($this->content)) {
+			$this->content = 'array()';
+		} elseif (is_object($this->content)) {
+			$this->content = method_exists($this->content, '__toString') ? (string)$this->content : get_class($this->content);
+		}
+	}
 }