NUnit Test Run Order

Question

By default nunit tests run alphabetically. Does anyone know of any way to set the execution order? Does an attribute exist for this?

Answer 1

I'm suprised the NUnit community hasn't come up with anything, so I went to create something like this myself.

I'm currently developing an open-source library that allows you to order your tests with NUnit. You can order test fixtures and ordering "ordered test specifications" alike.

The library offers the following features:

• Build complex test ordering hierarchies
• Skip subsequent tests if an test in order fails
• Order your test methods by dependency instead of integer order
• Supports usage side-by-side with unordered tests. Unordered tests are executed first.

The library is actually inspired in how MSTest does test ordering with .orderedtest files. Please look at an example below.

[OrderedTestFixture]
public sealed class MyOrderedTestFixture : TestOrderingSpecification {
    protected override void DefineTestOrdering() {
        TestFixture();

        OrderedTestSpecification();

        TestFixture();
        TestFixture();
    }

    protected override bool ContinueOnError => false; // Or true, if you want to continue even if a child test fails
}