title: How to run php unit tests in extention yii2
body: <p>I wont to run unit tests in widget uploaded like extention by composer like <a href="https://github.com/lysenkobv/yii2-geoip" rel="nofollow noreferrer">https://github.com/lysenkobv/yii2-geoip</a></p>
  
  <p>After installation an extention it is located in ./vendor/lysenkobv/yii2-geoip ana tests located in ./vendor/lysenkobv/yii2-geoip/tests
  How I can run tests in my yii2 app. </p>
  
  <p>I have installed codeception and phpunit in my yii2 app in vendor/bin/</p>