xunit test Fact multiple times

Question

I have some methods that rely on some random calculations to make a suggestion and I need to run the Fact several times to make sure is ok.

I could include a for loop inside the fact i want to test but because there are several test where I want to do this I was lookup for a cleaner approach, something like this Repeat attribute in junit: http://www.codeaffine.com/2013/04/10/running-junit-tests-repeatedly-without-loops/

Can I easily implement something like this in xunit?

Answer 1

You'll have to create a new DataAttribute to tell xunit to run the same test multiple times.

Here's is a sample following the same idea of junit:

public class RepeatAttribute : DataAttribute {     private readonly int _count;      public RepeatAttribute(int count)     {         if (count < 1)         {             throw new ArgumentOutOfRangeException(nameof(count),                    "Repeat count must be greater than 0.");         }         _count = count;     }      public override IEnumerable<object[]> GetData(MethodInfo testMethod)     {         return Enumerable.Repeat(new object[0], _count);     } } 

With this code in place, you just need to change your Fact to Theory and use the Repeat like this:

[Theory] [Repeat(10)] public void MyTest() {     ... }