Sorting the fixture using the namespace/type is nice... but like always, there situations when you would like to sort fixture using other criteras. For example, you might want to sort the test by authors, categories, importance, etc...

While preparing for AddDomain remoting, I have totally refactored the way MbUnit populates the tree to make it totally extensible: now you can populate the anyway you like!

FixtureCategoryAttribute

This is a new attribute that can tag fixture to sort them by categories. You can describe a nested category by separting the names by dots (like a namespace) and you can tag a fixture with multiple categories (a single fixture can be part of multiple categories). For example:

[CompositeFixture(typeof(EnumerableTest))]
[ProviderFactory(typeof(ArrayListFactory),typeof(IEnumerable))]
[ProviderFactory(typeof(HashtableFactory),typeof(IEnumerable))]
[Pelikhan] -> author
[FixtureCategory("Important.Tests.Should.Be.Here")] -> categories
[FixtureCategory("A.Test.Can.Be.In.Multiple.Categories")]
[FixtureCategory("A.Test.Can.Be.In.Multiple.Categories2")]
public class CompositeTest
{
}

Screenshot

Here's a snapshot of the latest MbUnit snapshot: as you can see the tests are sorted by namespace, authors and categories.