public void LogoutTests()
{
// logout tests
ServerController sc2 = new ServerController();
Assert.AreEqual(Result.USER_NOT_FOUND, sc2.Logout("testUser"));//try to logout without any register and login
sc2.Register("alice", "123456");
Assert.AreEqual(Result.SECURITY_ERROR, sc2.Logout("alice"));//try to logout without login
sc2.Login("alice", "123456");
Assert.AreEqual(Result.OK, sc2.Logout("alice"));//try to logout after login
}