VS2017 and NUnit 3.9 No test is available

Question

I am using the latest VS2017 version 15.6.4, NUnit3TestAdapter 3.10.0 and Nunit version 3.9.0.0.

When I try to run a unit test in Test Explorer the test are grayed out, when I right click and and run selected tests I see the following error: No test is available Here is how my test class looks

    [TestFixture]     public partial class ListViewBOTest     {     [Test]      public void TestSearch_DateTime()       {         Assert.AreEqual(1,0);       }      } 

Text from output:

[3/26/2018 10:53:55 AM Informational] ------ Run test started ------ [3/26/2018 10:53:55 AM Informational] NUnit Adapter 3.10.0.21: Test execution started [3/26/2018 10:53:55 AM Informational] Running all tests in C:\Projects\MVPPlant\DEV\CMMSdg.Plant\CMMSdg.Plant\Sln.2010\CMMSdg.Plant.BusinessObjects.Test\bin\Debug\CMMSdg.Plant.BusinessObjects.Test.dll [3/26/2018 10:53:56 AM Informational] NUnit failed to load C:\Projects\MVPPlant\DEV\CMMSdg.Plant\CMMSdg.Plant\Sln.2010\CMMSdg.Plant.BusinessObjects.Test\bin\Debug\CMMSdg.Plant.BusinessObjects.Test.dll [3/26/2018 10:53:56 AM Informational] NUnit Adapter 3.10.0.21: Test execution complete [3/26/2018 10:53:56 AM Warning] No test is available in C:\Projects\MVPPlant\DEV\CMMSdg.Plant\CMMSdg.Plant\Sln.2010\CMMSdg.Plant.BusinessObjects.Test\bin\Debug\CMMSdg.Plant.BusinessObjects.Test.dll. Make sure that test discoverer & executors are registered and platform & framework version settings are appropriate and try again. [3/26/2018 10:53:56 AM Informational] ========== Run test finished: 0 run (0:00:01.0435303) ========== 

Answer 1

Make sure you have installed the NUnit3 Test Adapter from here

https://marketplace.visualstudio.com/items?itemName=NUnitDevelopers.NUnit3TestAdapter

Answer 2

Can you check the following steps and see if it works?

1. In the Visual Studio menu, go to Test > Test Settings > Default Processor Architecture and make a note if X86 is selected or X64
2. Now go to the Build section in the Properties window of the project where the tests are written. Make sure the Platform target drop-down is selected to either Any CPU or at least it matches the architecture from the above step 1.

Now if you build the solution and try running those tests, you should see that they are now running.