/**
  * TARGET : checkLanguage
  */
 public function testCheckLanguage_ndl()
 {
     global $mgAvailableLanguage;
     $controller = new MultiLanguageManager_controller();
     MultiLanguageManager_controller::setUILanguage($this->notDefaultLanguage);
     $this->assertFalse($controller->checkLanguage($this->invalidLanguage));
     $this->assertFalse($controller->checkLanguage());
     $this->assertFalse($controller->checkLanguage(NULL));
     $this->assertFalse($controller->checkLanguage(2));
     foreach ($mgAvailableLanguage as $key => $value) {
         $this->assertTrue($controller->checkLanguage($key));
     }
 }