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How to reproduce an occasionally failing test?
time to read 2 min | 267 words
One of the worst possible things that can happen is a test that fails, sometimes. Not always, and never under the debugger, but it fails.
It tells you that there is a bug, but doesn’t give you the tool to find it:
Usually, this is an indication of a problem with the code that is exposed through multi threading. I found the following approach pretty useful in digging those bastards out:
static void Main() { for (int i = 0; i < 100; i++) { using (var x = new Raven.Tests.Indexes.QueryingOnDefaultIndex()) { x.CanPageOverDefaultIndex(); Console.Write("."); } } }
Yes, it is trivial, but you would be surprised how often I see people throwing their hands in despair over issues like this.
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