NUnit
On this page of JetBrains Rider options, you can adjust unit testing settings related to NUnit tests.
Test discovery
To list NUnit tests from your solution in the Unit Tests window, JetBrains Rider needs to discover unit tests.
The discovery of tests in specific project happens only after the project is built. You can choose between two options that allow you to prefer either speed or accuracy for discovering unit tests after the build.
Metadata (default)
In this mode, JetBrains Rider analyzes the build artifact without launching the test runner.
As tests are defined using attributes, JetBrains Rider can quickly scan the metadata of managed artifacts to find most tests in the project. However, it may fail to find tests that require running some special hooks of NUnit to define their parameters.
This is the fastest way of discovering tests.
Test runner
In this mode, JetBrains Rider launches NUnit runner in the discovery mode on the build artifact, and then uses the results from the runner.
Using NUnit runner can take considerably longer to analyze the project, but the list of discovered tests will be complete in most cases.
After you run all tests from a specific project, JetBrains Rider will update the list of tests in this project independently of the selected discovery mode because letting the NUnit runner to execute all tests is the most accurate way of test discovery.
Custom NUnit installation
Use specified custom NUnit | JetBrains Rider installation includes 2 bundled test runners that support versions up to 2.6.4 and up to 3.11.1 correspondingly. To use another NUnit version, tick this checkbox and enter the path to the local NUnit installation into the corresponding field. If there are any NUnit addins in this custom installation, they will be loaded too. |
NUnit 2
Load NUnit Addins | If support of NUnit 2x is selected above and you need to use NUnit addins for this bundled version, put the addins in the lib\ReSharperHost\NUnit2\addins subfolder of the JetBrains Rider installation directory (which is shown for your convenience) and choose how to load them. |
NUnit 3 Test Parameters
Use this list to add {name, value} pairs, which will be available in your NUnit tests via NUnit.Framework.TestContext.Parameters at runtime.
These pairs will work the same as TestRunParameters defined in the .runsettings file: