Testing .NET Core with NUnit in Visual Studio 2017

The switch from the project.json format to the new csproj based format for .NET Core and .NET Standard projects also changed the API for test adapters. Because of this, NUnit’s dotnet-test-nunit adapter stopped working and we had to update our existing Visual Studio test adapter to support .NET Core. Last night I released the first alpha release of the test adapter to NuGet enabling testing of .NET Core and .NET Standard projects using Visual Studio 2017, Visual Studio Code, TFS Build, and, the dotnet test CLI command.

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Using NUnit’s TestCase Attribute

In the last post, we setup an NUnit test project and ran it in Visual Studio. In this post we are going to expand on that code to add more unit tests using the NUnit TestCase attribute.

Looking back at the last post, we are testing a method that converts an enum value to a friendly string by splitting the enum name at capitals. In that post, we only tested with one enum value. In this post, we will test with multiple enum values to ensure that the method handles every type of input. We will then remove code duplication by using the [TestCase] attribute to run one test many times with different data. (more…)

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