NUnit单元测试订单或TeamCity中的单独运行器

Question

Question:

Can I use separate unit test runner for subgroup of unit tests in my build? All of those that would need separate runner process are contained within single .dll

Or at least is it possible to specify order of unit tests?

Background:

I have some unit tests that are testing integration with native components that makes the process memory dirty and so in production code I recycle my process after using them. (it's python integration for .net and some packages are not designed for python engine unload and reload). However the unit tests are only isolated by app domains - so they still remain in same process and can colide.

Answer 1

You can use [TestCategory] NUnit attribute to create different test group. After grouping, you could run only specific group from TeamCity server. You could also divide it into different steps.

But also as a variant, you could use [OneTimeSetUp] and [OneTimeTearDown] attributes.

Useful links:

1. https://msdn.microsoft.com/en-us/library/dd286683.aspx - description for TestCategory attribute.
2. http://nunit.org/docs/2.5/consoleCommandLine.html - how you can run your test categories from nunit-console.
3. https://confluence.jetbrains.com/display/TCD9/Getting+Started+with+NUnit#GettingStartedwithNUnit-Case1.CommandLine - how you could use nunit-console inside team city.

Second approach:

1. https://github.com/nunit/docs/wiki/OneTimeSetUp-Attribute
2. https://github.com/nunit/docs/wiki/OneTimeTearDown-Attribute

Answer 2

Turns out TeamCity supports separation of test assemblies by individual test runner processes - option called 'Run process per assembly' in NUnit build step configuration:

More details here: https://confluence.jetbrains.com/display/TCD10/NUnit (search 'Run process per assembly')