title: require_once(PHPUnit/Extensions/SeleniumTestCase.php) in yii
body: <p>i'm trying to use phpunit in yii</p>
  
  <p>i followed the instruction to install it from <a href="http://phpunit.de/manual/4.1/en/installation.html" rel="nofollow">http://phpunit.de/manual/4.1/en/installation.html</a></p>
  
  <p>when i'm doing this </p>
  
  <pre><code>phpunit protected/tests/unit/
  </code></pre>
  
  <p>this error happend</p>
  
  <pre><code>PHP Warning:  require_once(PHPUnit/Extensions/SeleniumTestCase.php): failed to open stream: No such file or directory in /opt/lampp/htdocs/news/framework/test/CWebTestCase.php on line 12
  </code></pre>
  
  <p>when i'm trying to install SeleniumTestCase again throw </p>
  
  <pre><code>composer global require "phpunit/phpunit-selenium": "&gt;=1.2"
  </code></pre>
  
  <p>this is what appeared </p>
  
  <pre><code>Changed current directory to /home/qts1234/.composer
  ./composer.json has been updated
  Loading composer repositories with package information
  Updating dependencies (including require-dev) 
  Nothing to install or update 
  Generating autoload files 
  </code></pre>
  
  <p>what can i do . please help</p>