单元测试C＃时如何moq func参数

Question

I'm trying to write some tests but I'm not sure how to handle the arguments for setting up my moq mock. Can anyone suggest how I can complete this line of code correctly? Many thanks,

My moq code line

The parameter is of type shown below for the Returns(...) which I'm not sure how to handle.

Parameter intellisense

The method is shown below that I'm trying to moq out.

The method definition

public static async Task<CommandResult> SendSupportAsync(this IBus bus, Command command, bool withLogging = true)

UPDATE

I've tried the suggestion, I've added the mocked object and set up the return but the compiler gives the following error:

An expression tree may not contain a call or invocation that uses optional arguments

Answer 1

If you want to mock the return value, then you can create a mock for it

var resultMock = new Mock<Task<CommandResult>>();

then setup your mock object, and you return it like

bus.Setup(x=>c.SendSupportAsync(new TagCommand(ID, MID))).Returns(resultMock.object);

If you do not want to mock the result, then you can create an instance and return it like

bus.Setup(x=>c.SendSupportAsync(new TagCommand(ID, MID))).Returns(objCommandResult);