How to Run NUnit Tests from C# Code

Question

I'm trying to write a simple method that receives a file and runs it using NUnit. The code I managed to build using NUnit's source does not work:

if(openFileDialog1.ShowDialog() != DialogResult.OK) {     return; }  var builder = new TestSuiteBuilder(); var testPackage = new TestPackage(openFileDialog1.FileName); var directoryName = Path.GetDirectoryName(openFileDialog1.FileName); testPackage.BasePath = directoryName; var suite = builder.Build(testPackage);  TestResult result = suite.Run(new NullListener(), TestFilter.Empty); 

The problem is that I keep getting an exception thrown by builder.Build stating that the assembly was not found.

What am I missing? Is there some other way to run the test from the code (without using Process.Start)?

Answer 1

Adding the following line at the beginning, sets up the NUnit framework and might help you:

CoreExtensions.Host.InitializeService(); 

Another "easier" way to execute NUnit tests programmatically would be:

TestPackage testPackage = new TestPackage(@"C:\YourProject.Tests.dll"); RemoteTestRunner remoteTestRunner = new RemoteTestRunner(); remoteTestRunner.Load(testPackage); TestResult testResult = remoteTestRunner.Run(new NullListener()); 

You need to reference the following assemblies:

• nunit.core.dll
• nunit.core.interfaces.dll

And of course, the nunit.framework.dll must be in the folder with your test assembly ;)