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I am trying to show some information from a [TestMethod] method.

Usually we use NUnit and a line with Console.WriteLine runs fine and we can see it in 'output' window, but on this project we must to use Testing tools embebed with VS2010 and Console.WriteLine doesn't run because we cannot see anything.

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Have you tried Debug.WriteLine()? – svick Mar 9 '12 at 15:14
Have to say: you don't want to do that. The tests become slow, and someone has to watch that console. – Christian Horsdal Mar 10 '12 at 6:47

3 Answers

up vote 9 down vote

Why do you need to "see anything"?

You should just use asserts to validate the test has worked correctly.

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1  
Agreed. If you're manually checking output, it isn't an automated test anymore! – Tom G Mar 9 '12 at 15:39
A minus, and no comment, brilliant – Ozz Mar 9 '12 at 16:36
3  
Well, I wasn't the one who gave a -1, but I thought about it, because this answer, while it may be a good point, doesn't actually answer the question. – Eric King Mar 9 '12 at 17:11
2  
It's one thing to answer the question, it's another to provide insight the asker didn't think of. It's the difference between giving someone what they want versus what they need. – Mike Brown Mar 9 '12 at 17:30
2  
There's no reason you can't do both. – Eric King Mar 9 '12 at 17:32
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up vote 6 down vote

I agree with the previous poster that if you need to verify something you assert it...

However... Your Console.WriteLine() message will show, after your test has completed double click the test result line in the Test Results tab, this will open the results for the individual test which contains a "Standard Console Output" section which has your Console.WriteLine() messages.

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up vote 0 down vote

You can set the standard output and input of Console to be a TextWriter / TextReader and perform asserts based on the content of those.

http://msdn.microsoft.com/en-us/library/system.console.setout.aspx

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