public void UserLogin()
{
var captcha = serverClient.GetCaptchaImage();
// 你应该在这里转换为图像，然后输入正确的验证码
// 测试服务器不会验证验证码是否正确
try
{
serverClient.Register("testuser1", "*****@*****.**", "123456", "TestUser1", null, "xxxx");
}
catch (Exception e) { }
Assert.False(serverClient.Login("testuser1", "654321", "xxxx"));
var success = serverClient.Login("testuser1", "123456", "xxxx");
Assert.True(success);
Assert.False(string.IsNullOrEmpty(serverClient.UserSession));
Assert.NotZero(serverClient.UID);
}