Add C#/.NET Core Cobertura report parsing to Test Visualization Feature
Problem to solve
As a developer, I want code coverage reports generated by Coverlet to be parsed by the Test Coverage Visualization, so I can see coverage data in MR diffs and avoid bugs.
The Test Coverage Visualization feature in 12.9 seems to not support Cobertura formatted code coverage generated by a prominent .NET Core coverage tool, Coverlet.
Intended users
- Sasha (Software Developer) who is reviewing a merge request for some code in a .net core project.
User experience goal
The user should be able to use the existing feature within a .net core project to see how new / modified lines of code are covered by the unit tests.
Proposal
My guess is it's either an issue with coverlet or the Gitlab cobertura parser. Since coverlet is working with our Jenkins plugins, I'd like to see if this can be fixed on the Gitlab side. There is an open issue to address this in the coverlet project but we can be more proactive about a fix so the growing .net core user base can use this feature.
Further details
Steps to reproduce
- Use Gitlab 12.9 with
Feature.enable(:coverage_report_view) - Clone the sample repository:
git clone https://gitlab.com/mclayton7/dotnet-example.git - Create a new branch
- Add a method to
ExampleLib/Calculator.cs - Commit the change
- Make a merge request.
Example Project
https://gitlab.com/mclayton7/dotnet-example/
What is the current behavior?
No line coverage is displayed on the changes page of the merge request.
What is the expected behavior?
Line coverage from the cobertura report should be shown on the changes page of the merge request.