public function createUserWithRoles($roles, array $fields = [])
    {
        $user = $this->createTestUser($fields);
        $driver = $this->getDriver();

        foreach (array_map('trim', explode(',', $roles)) as $role) {
            $driver->userAddRole($user, $role);
        }

        return $user;
    }
public function createUserWithRoles($roles, array $fields = [])
    {
        $user = $this->createTestUser($fields);
        $driver = $this->getDriver();

        foreach (array_map('trim', explode(',', $roles)) as $role) {
            $driver->userAddRole($user, $role);
        }

        return $user;
    }
@param string $roles
Necessary user roles separated by comma.
@param array $fields

@return \stdClass