Code coverage report for .Net not working on Linux agent

SonarQube Cloud
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1

For our build pipeline in Azure DevOps we have switched to using the ubuntu-latest vm-image and since that switch I have noticed we no longer receive code coverage information. I have verified that the problem is due to using a Linux agent by switching back to windows and see that it worked, however due to a problem with the current Windows agents we have to use the Linux agent. Is it possible there is a problem with the default path that sonar checks for the coverage information? I don’t see any problems in the attached log. sonarlog2.txt (296.2 KB)

Below the pipeline:


pool:
  vmImage: 'ubuntu-latest'

variables:
  - name: solution
    value: '**/*.sln'
  - name: buildPlatform
    value: 'Any CPU'
  - name: buildConfiguration
    value: 'Test'

steps:

  - task: DotNetCoreCLI@2
    displayName: 'Restore solution'
    inputs:
      command: 'restore'
      projects: '**/*.sln'
      feedsToUse: 'select'

  - task: SonarCloudPrepare@1
    displayName: 'Prepare analysis configuration'
    inputs:
      SonarCloud: 'SC'
      organization: 'org'
      scannerMode: 'MSBuild'
      projectKey: 'key'
      projectName: 'name'

  - task: DotNetCoreCLI@2
    displayName: 'Build solution'
    inputs:
      command: 'build'
      projects: '**/*.sln'
      arguments: --configuration $(BuildConfiguration)

  - task: DotNetCoreCLI@2
    displayName: 'Execute Unit tests'
    inputs:
      command: 'test'
      projects: '**/*.Tests.csproj'
      arguments: '--collect "Code Coverage"'
      
  - task: SonarCloudAnalyze@1
    displayName: 'Run SonarCloud analysis'


  - task: SonarCloudPublish@1
    displayName: 'Publish results on build summary'
    inputs:
      pollingTimeoutSec: '300'
1 Like
2

Hi Dave

As you have discovered the automatic collection of coverage is only supported on Windows. Microsoft have created a new tool that is cross-platform called dotnet-coverage and we have updated the documentation on how to set it up here

Hope that helps

Tom

4

I have an issue with this when I want to run it on linux agent. In the example .NET Test Coverage | SonarCloud Docs provided by sonar cloud the dotnet test job arguments: '--collect "Code Coverage"' will not work in linux that only works in windows.

5

Hi! Since version 17.5 someone claims that MS’ dotnet test --collect “Code Coverage” is now fully cross platform:

Is that something Sonar is looking into?

6

So, apparently this community (or at least this topic) is completely dead. No-one else interested in code coverage on Linux?

2 Likes
7

+1 to this, we currently have to have 2 separate jobs to build our code twice, once on windows, once in linux due to SonarQube’s lack of support for linux. Would be great to see this fixed.

8

Are there any updates on this? I tested today with

pool:
  vmImage: ubuntu-latest

and

- script: dotnet test MyLibrary-Tests/MyLibrary-Tests.csproj --collect "Code Coverage"
  displayName: 'dotnet test MyLibrary-Tests'

and no coverage gets reported

1 Like
9

Tom_Howlett (new users cannot mention, grrrrr) are there any news about this?

I think it is interesting to have code coverage under linux agents as it is with windows agents

Can anybody mention Tom??

TY

10

@Tom_Howlett any news about this working in Linux agents?

11

@Cesar_Diaz I have got it working by now using OpenCover.

In the sonar prepare step I have added the following:

extraProperties: |
       sonar.cs.opencover.reportsPaths=$(Agent.TempDirectory)/*/coverage.opencover.xml

Then the test step I have defined as follows:

- task: DotNetCoreCLI@2
    displayName: 'Unit tests'
    inputs:
      command: 'test'
      projects: '**/*.UnitTests.csproj'
      arguments: '--no-build --configuration $(buildConfiguration) --collect:"XPlat Code Coverage" -- DataCollectionRunSettings.DataCollectors.DataCollector.Configuration.Format=cobertura,opencover'

Note the two formats, Cobertura is used to create a code coverage report in DevOps, and Opencover to create a report for SonarCloud

To get the Cobertura report in DevOps I added an additional step to publish the report, this is not needed for Sonar:

- task: PublishCodeCoverageResults@1
    displayName: 'Publish code coverage report'
    inputs:
      codeCoverageTool: 'Cobertura'
      summaryFileLocation: '$(Agent.TempDirectory)/*/coverage.cobertura.xml'
1 Like
12

Nice @DdeM

I have it working now

TY

13

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