Azure Devops Pipeline Azure Repos Git .Net Error in Tests Failed to run as a self-contained app - asp.net-core

Question

I have a .Net solution with multiple projects, including a test project.
When I create a pipeline for my solution using Azure Devops templates, with the connect Azure Repos Git and configure ASP.Net Core (.Net Framework), I get the following yml file:
# ASP.NET Core (.NET Framework)
# Build and test ASP.NET Core projects targeting the full .NET Framework.
# Add steps that publish symbols, save build artifacts, and more:
# https://docs.microsoft.com/azure/devops/pipelines/languages/dotnet-core
trigger:
- main
pool:
vmImage: 'windows-latest'
variables:
solution: '**/*.sln'
buildPlatform: 'Any CPU'
buildConfiguration: 'Release'
steps:
- task: NuGetToolInstaller#1
- task: NuGetCommand#2
inputs:
restoreSolution: '$(solution)'
- task: VSBuild#1
inputs:
solution: '$(solution)'
msbuildArgs: '/p:DeployOnBuild=true /p:WebPublishMethod=Package /p:PackageAsSingleFile=true /p:SkipInvalidConfigurations=true /p:DesktopBuildPackageLocation="$(build.artifactStagingDirectory)\WebApp.zip" /p:DeployIisAppPath="Default Web Site"'
platform: '$(buildPlatform)'
configuration: '$(buildConfiguration)'
- task: VSTest#2
inputs:
testSelector: 'testAssemblies'
testAssemblyVer2: |
**\*test*.dll
!**\*TestAdapter.dll
!**\obj\**
searchFolder: '$(System.DefaultWorkingDirectory)'
platform: '$(buildPlatform)'
configuration: '$(buildConfiguration)'
When I run the pipline and reaches the VSTest Task, after running the tests, it gives me the following error:
##[error]Testhost process for source(s) 'D:\a\1\s\Fazer.UITests\bin\Release\net6.0\Microsoft.TestPlatform.PlatformAbstractions.dll' exited with error: A fatal error was encountered. The library 'hostpolicy.dll' required to execute the application was not found in 'C:\Program Files\dotnet'.
##[error]Failed to run as a self-contained app.
##[error] - The application was run as a self-contained app because 'D:\a\1\s\Fazer.UITests\bin\Release\net6.0\testhost.runtimeconfig.json' was not found.
##[error] - If this should be a framework-dependent app, add the 'D:\a\1\s\Fazer.UITests\bin\Release\net6.0\testhost.runtimeconfig.json' file and specify the appropriate framework.
##[error]. Please check the diagnostic logs for more information.
How can I fix this?

Answer 1

After a while searching for the solution, I found out that all I had to do was to change the line **\*test*.dll to **\*Tests.dll for the key testAssemblyVer2 in the task VSTest#2.
Before:
- task: VSTest#2
inputs:
testSelector: 'testAssemblies'
testAssemblyVer2: |
--> **\*test*.dll
!**\*TestAdapter.dll
!**\obj\**
searchFolder: '$(System.DefaultWorkingDirectory)'
platform: '$(buildPlatform)'
configuration: '$(buildConfiguration)'
After:
- task: VSTest#2
inputs:
testSelector: 'testAssemblies'
testAssemblyVer2: |
--> **\*Tests.dll
!**\*TestAdapter.dll
!**\obj\**
searchFolder: '$(System.DefaultWorkingDirectory)'
platform: '$(buildPlatform)'
configuration: '$(buildConfiguration)'
Then the pipeline runned sucesssfully!