Matt Ward

.NET Core Test Runner Support in Xamarin Studio

The latest version of the .NET Core addin for Xamarin Studio and MonoDevelop now supports .NET Core Test Runners.

.NET Core Test Runner in Xamarin Studio

Xamarin Studio uses the .NET Core test communication protocol to support .NET Core test runners. This protocol provides a way to discover and run the unit tests provided by a .NET Core test runner.

When Xamarin Studio finds a testRunner in the project.json file it will attempt to discover the unit tests for that project.

    "version": "1.1.0-*",

    "testRunner": "nunit",

    "dependencies": {,
        "NUnit": "3.4.0",
        "dotnet-test-nunit": "3.4.0-beta-1"

    "frameworks": {
        "netcoreapp1.0": {
            "imports": [
            "dependencies": {
                "Microsoft.NETCore.App": {
                    "version": "1.0.0-*",
                    "type": "platform"

The discovered tests are then shown in the Unit Tests window.

Discovered NET Core unit tests in Unit Tests window

After building the project the Unit Tests window will discover any new tests that have been added.

Tests can be run by clicking Run All or by right clicking a test in the Unit Tests window and selecting Run Test.

Run NET Core unit tests in Unit Tests window

The test results are shown in the Test Results window.

.NET Core test results  in Test Results window

Console output from the test runner is shown in the Application Output window.

.NET Core Test Runner in Xamarin Studio

Debugging the unit tests is not yet supported.

xUnit and NUnit provide .NET Core test runners and both of these are supported in Xamarin Studio. More information can be found in existing tutorials on how to use these test runners: