我是Moq的新手,我正在努力解决这个错误。我不太确定为什么我收到了我得到的错误。我跟着发现here的测试代码。
错误:
Moq.MockException: 模拟上的预期调用至少一次,但从未执行过:c => c.PostAsync(Mock.Object,"你发送的abc是3个字符")
代码
MyTests.cs
[TestClass]
public class MyTests
{
private Mock<IChatHelper> _chat;
private RootDialog _dialog;
private Mock<IDialogContext> _context;
public LUISDialogTests()
{
_chat = new Mock<IChatHelper>();
_context = new Mock<IDialogContext>();
_dialog = new RootDialog(_chat.Object);
}
//[SetUp]
//public void SetUp()
//{
// _chat = new Mock<IChatHelper>();
// _dialog = new RootDialog(_chat.Object);
// _context = new Mock<IDialogContext>();
//}
[TestMethod]
public async Task Test_CustomerService_Message_LengthAsync()
{
var message = Activity.CreateMessageActivity();
message.Text = "abc";
_chat.Setup(c => c.PostAsync(_context.Object, message.Text));
await _dialog.MessageReceivedAsync(_context.Object, Awaitable.FromItem(message));
_chat.Verify(c => c.PostAsync(_context.Object, "You send abc which was 3 characters"), Times.AtLeastOnce); // Fails here
}
}
RootDialog.cs
[Serializable]
public class RootDialog : IDialog<object>
{
private IChatHelper _chat;
public RootDialog(IChatHelper chat)
{
_chat = chat;
}
public Task StartAsync(IDialogContext context)
{
context.Wait(MessageReceivedAsync);
return Task.CompletedTask;
}
public async Task MessageReceivedAsync(IDialogContext context, IAwaitable<object> result)
{
var message = await result as Activity;
int length = (message.Text ?? string.Empty).Length;
await _chat.PostAsync(context, $"You sent {message.Text} which was {length} characters");
context.Wait(MessageReceivedAsync);
}
ChatHelper.cs
public interface IChatHelper
{
Task PostAsync(IDialogContext context, string message);
}
[Serializable]
public class ChatHelper : IChatHelper
{
public async Task PostAsync(IDialogContext context, string message)
{
await context.PostAsync(message);
}
}
有一点需要注意:
答案 0 :(得分:3)
这是你期待的消息中的一个字符错字。您正在测试的代码执行此操作:
await _chat.PostAsync(context, $"You sent {message.Text} which was {length} characters");
您正在验证是否发生了这种情况:
_chat.Verify(c => c.PostAsync(_context.Object, "You send abc which was 3 characters"), Times.AtLeastOnce); // Fails here
你能发现两个字符串的区别吗? sent
!= send
。改变一个或其他,它可能会开始工作。