Piwik\Plugins\UsersManager\API::addUser PHP Method

    public function addUser($userLogin, $password, $email, $alias = false, $_isPasswordHashed = false)
    {
        Piwik::checkUserHasSuperUserAccess();
        $this->checkLogin($userLogin);
        $this->checkEmail($email);
        $password = Common::unsanitizeInputValue($password);
        if (!$_isPasswordHashed) {
            UsersManager::checkPassword($password);
            $passwordTransformed = UsersManager::getPasswordHash($password);
        } else {
            $passwordTransformed = $password;
        }
        $alias = $this->getCleanAlias($alias, $userLogin);
        $passwordTransformed = $this->password->hash($passwordTransformed);
        $token_auth = $this->createTokenAuth($userLogin);
        $this->model->addUser($userLogin, $passwordTransformed, $email, $alias, $token_auth, Date::now()->getDatetime());
        // we reload the access list which doesn't yet take in consideration this new user
        Access::getInstance()->reloadAccess();
        Cache::deleteTrackerCache();
        /**
         * Triggered after a new user is created.
         *
         * @param string $userLogin The new user's login handle.
         */
        Piwik::postEvent('UsersManager.addUser.end', array($userLogin, $email, $password, $alias));
    }

 public function setUp()
 {
     parent::setUp();
     $this->api = API::getInstance();
     $pseudoMockAccess = new FakeAccess();
     FakeAccess::$superUser = true;
     Access::setSingletonInstance($pseudoMockAccess);
     Fixture::createWebsite('2014-01-01 00:00:00');
     Fixture::createWebsite('2014-01-01 00:00:00');
     Fixture::createWebsite('2014-01-01 00:00:00');
     $this->api->addUser('userLogin', 'password', '*****@*****.**');
 }