使用 Moq 模拟 TraceListener

发布于 2024-10-13 17:51:37 字数 357 浏览 8 评论 0原文

为什么 Moq 验证失败并显示“Moq.MockException：未在模拟上执行调用”？

var mock = new Mock<TraceListener>();
var ts = new TraceSource("traceSourceName", SourceLevels.Verbose);
ts.Listeners.Add(mock.Object);

var message = "the message";

ts.TraceEvent(TraceEventType.Verbose, 0, message);
ts.Flush();
mock.Verify(x => x.WriteLine(message));

原文

Why does the Moq Verify fail with a "Moq.MockException : Invocation was not performed on the mock"?

var mock = new Mock<TraceListener>();
var ts = new TraceSource("traceSourceName", SourceLevels.Verbose);
ts.Listeners.Add(mock.Object);

var message = "the message";

ts.TraceEvent(TraceEventType.Verbose, 0, message);
ts.Flush();
mock.Verify(x => x.WriteLine(message));

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旧街凉风 2024-10-20 17:51:38

我知道这个问题已经存在很长时间了，但是答案如下...

当您通过 TraceSource 编写跟踪事件时，它会调用跟踪侦听器 TraceEvent 方法来执行跟踪 - 因此您需要验证对listener.TraceEvent 的调用，而不是listener.WriteLine...

var mock = new Mock<TraceListener>();
var ts = new TraceSource("traceSourceName", SourceLevels.Verbose);
ts.Listeners.Add(mock.Object);

var message = "the message";

ts.TraceEvent(TraceEventType.Verbose, 0, message);

mock.Verify(x => x.TraceEvent(It.IsAny<TraceEventCache>(), "traceSourceName", 
    TraceEventType.Verbose, 0, message), Times.Once(), "Expected a trace");

希望这对某人有帮助！

干杯，

摩根

I know this question has been on here a long time however the answer is as follows...

When you write a trace event through TraceSource it calls your trace listeners TraceEvent method to do the tracing - so you need to verify calls to listener.TraceEvent, not listener.WriteLine...

var mock = new Mock<TraceListener>();
var ts = new TraceSource("traceSourceName", SourceLevels.Verbose);
ts.Listeners.Add(mock.Object);

var message = "the message";

ts.TraceEvent(TraceEventType.Verbose, 0, message);

mock.Verify(x => x.TraceEvent(It.IsAny<TraceEventCache>(), "traceSourceName", 
    TraceEventType.Verbose, 0, message), Times.Once(), "Expected a trace");

Hope this helps someone!

Cheers,

Morgan

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