Hi Mark -

The solution-level parallel execution option is basically just a shortcut for using attributes at fixture or project level.

If you have a project containing tests that can't be run in parallel with each other (i.e. an integration test project), the easiest option is to place an ExclusivelyUsesAttribute at root level in the project. For example, by adding [NCrunch.Framework.ExclusivelyUses("Database")] in your AssemblyInfo.cs file. In this way, the tests in this project will all be considered to be making use of the same resource, and they will not be run together.

If you need to stop these tests running with ANY other test in your solution, you can also use the Serial attribute.