Azure Functions v2: Integrate Unit Tests with xUnit in Deployment with Azure DevOps

Question

I created an Azure Function v2 (.NET Core) and added a Core Class library that includes Unit Tests using xUnit. I then created a Build pipeline in Azure DevOps with the tasks Visual Studio build and Visual Studio Test.

But I repeatedly fail to build successfully respectively to have the Unit tests running successfully in the pipeline. Locally everything works fine.

What do I have to do to get the Function App build and unit tested successfully in the Azure DevOps Build pipeline?

Answer 1

Here are the steps that have made it work:

• Create the Core Class Library

• Reference the Azure Function project via "Add Reference"

• Add NuGet packages to the class library -> xunit, xunit.runner.visualstudio and Microsoft.NET.Test.Sdk

• Add classes to the class library as described here: https://docs.microsoft.com/en-us/azure/azure-functions/functions-test-a-function#create-test-classes

• Go to to the .csproj file of the Azure Functions project as well as the class library for the unit tests and change

<PropertyGroup>
  <TargetFramework>netcoreapp2.1</TargetFramework>
</PropertyGroup>

to

<PropertyGroup>
  <TargetFramework>netcoreapp2.1</TargetFramework>
  <AzureFunctionsVersion>v2</AzureFunctionsVersion>
  <RuntimeFrameworkVersion>2.1.1</RuntimeFrameworkVersion>
  <PlatformTarget>AnyCPU</PlatformTarget>
  <RuntimeIdentifier>win-x64</RuntimeIdentifier>
</PropertyGroup>

• Set up the Build pipeline and include the following tasks:

........................................................ ........................................................ ........................................................

• Make sure that all files are added before checking in (TFVC) / pushing (Git)

• Check in / Push