On this page of JetBrains Rider options, you can adjust general settings that apply to 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.
Run up to [x] test runners in parallel
Use this selector to set the maximum number of assemblies to be tested concurrently in parallel threads. Fore each assembly, JetBrains Rider will launch a separate test runner.
Skip tests from categories
Type names of test categories to be excluded from the run, separated by a comma. The tests associated with the category that you specified are ignored.
For XUnit tests, where there is no special attribute for categories, list the ignored categories as follows:
For more information, see Test categories
Run tests from:
Choose Project output folder to run compiled tests from the default location. When assemblies are placed in the default project location, test files are retrieved from the same location.
Choose 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 field, or click Browse to find and set the desired location.
Unit Test Sessions
Save and restore Unit Test Sessions
Select this checkbox to allow JetBrains Rider to restore unit test sessions when you close and reopen Rider.
Activate Unit Test Session window when tun starts
Select this checkbox if you want Unit Tests window to open each time you run unit tests.
Unit Test Output
Wrap long lines in Unit Test Session output
Defines how to display long lines in the Output tab in the Unit Tests window. If this checkbox is selected, long lines are wrapped.
Limit auto-loaded output to:
Defines how to many lines should be displayed in the Output tab in the Unit Tests window.