In this page of ReSharper options, you can adjust unit testing settings.
|Enable Unit Testing||Enables or disables unit test runner and all unit testing features.|
|Default platform architecture||This selector allows choosing a platform to run unit tests on.|
|Default .NET Framework version||This selector allows setting .NET version to use when running unit tests.|
|Shadow-copy assemblies being tested||If this check box is selected, assemblies being tested are subject to shadow-copying. So even while the tests are running, assemblies can be rebuilt.|
|Use separate AppDomain for each assembly with tests||This option applies to MSTest and NUnit tests and lets the test runner start each test assembly in its own Application Domain. It may come in handy in the following situations:|
|Run up to [number of assemblies] assemblies in parallel||Select the number of assemblies to be tested by ReSharper concurrently in parallel threads.|
|Run tests from:||
Click Specified folder to run tests using a post-build step, so the tests are run from the particular folder. Enter the desired path in the text box, or click Browse to open the Browse For Folder dialog box and specify the desired location.
|Skip tests from categories||Type names of test categories to be excluded from the run. The tests associated with the category that you specified are ignored.|
|Unit Test Sessions|
|Save and restore Unit Test Sessions||Select this check box to allow ReSharper to restore unit test sessions when you close and reopen Visual Studio.|
|Wrap long lines in Unit Test Session output||Defines how to display long lines in the Output tab in the Unit Test Sessions Window. If this check box is selected, long lines are wrapped.|