NUnit

A guide for generating Trunk-compatible test reports for NUnit

1. Install NUnit XML Test Result Adapter

Ensure you have NUnit3TestAdapter, which allows NUnit to output results in JUnit XML format:

dotnet add package NUnit3TestAdapter
dotnet add package Microsoft.NET.Test.Sdk
dotnet restore

2. Run Tests with JUnitXML Output

dotnet test --logger "trx;LogFileName=test-results.trx"

This generates a .trx file in the test project’s output folder.

3. Convert .trx to JUnit.xml format

NUnit does not output JUnit format directly, so you need to convert the .trx file to JUnit XML. Use the trx2junit tool:

Install trx2junit using:

dotnet tool install -g trx2junit

Convert the .trx file to a JUnit.xml using:

trx2junit test-results.trx

4. Output Location

The JUnit report will be written to the location of the source .trx file. In the example above, it would be at test-results.xml.

Disable Retries

You need to disable automatic retries if you previously included them. Retries compromise the accurate detection of flaky tests.

Omit [Retry(n)] from tests to disable retries.

Next Step

JUnit files generated with NUnit are compatible with Trunk Flaky Tests. See CI Providers for a guide on how to upload test results to Trunk.