I want to generate a single coverage report for my C# project based on this tutorial
https://docs.microsoft.com/en-us/dotnet/core/testing/unit-testing-code-coverage
When starting a Gitlab CI pipeline with the following configuration
image: mcr.microsoft.com/dotnet/sdk:5.0
stages:
- build
- unit-tests
build:
stage: build
script:
- dotnet build --output build
artifacts:
paths:
- build
unit-tests:
stage: unit-tests
script:
- |-
dotnet test --no-build --output build --collect:"XPlat Code Coverage";
dotnet tool install -g dotnet-reportgenerator-globaltool;
reportgenerator -reports:'**/coverage.cobertura.xml' -targetdir:'CoverageReports' -reporttypes:'Cobertura';
artifacts:
reports:
cobertura: CoverageReports/Cobertura.xml
dependencies:
- build
I get the following error
The report file pattern '**/coverage.cobertura.xml' is invalid. No matching files found.
When using ls to inspect the directory before running the reportgenerator command I can see that there are no matching files (although they should exist).
I would expect to have one coverage.cobertura.xml file per test project e.g.
...\myRepo\xUnitTestProject1\TestResults\380e65f7-48d5-468f-9cbc-550c8e0aeda8\coverage.cobertura.xml...\myRepo\xUnitTestProject2\TestResults\c96c55f7-40d3-483e-a136-573615e3a9c3\coverage.cobertura.xmlMy current solution:
It seems I have to run the build again. So I replaced this line
dotnet test --no-build --output build --collect:"XPlat Code Coverage";
with
dotnet test --collect:"XPlat Code Coverage";
Now it's working fine but an additional build seems to be redundant because I already created a build artifact...
So do you have any ideas how to improve the configuration so that I don't have to build a second time?
It seems like you could combine the two steps since dotnet test will also trigger a build. You would have build problems reported from the same stage as tests, but both have similar responses.
image: mcr.microsoft.com/dotnet/sdk:5.0
stages:
- unit-tests
unit-tests:
stage: unit-tests
script:
- |-
dotnet test --output build --collect:"XPlat Code Coverage";
dotnet tool install -g dotnet-reportgenerator-globaltool;
reportgenerator -reports:'../coverage.cobertura.xml' -targetdir:'CoverageReports' -reporttypes:'Cobertura';
artifacts:
paths:
- build
reports:
cobertura: CoverageReports/Cobertura.xml
Alternatively: Coverlet Collector depends on CoreCompile. But, the Global tool does not (since it isn't an msbuild task).
image: mcr.microsoft.com/dotnet/sdk:5.0
stages:
- build
- unit-tests
build:
stage: build
script:
- dotnet build --output build
artifacts:
paths:
- build
unit-tests:
stage: unit-tests
script:
- |-
dotnet test --no-build --output build --collect:"XPlat Code Coverage";
dotnet tool install -g coverlet.console;
dotnet tool install -g dotnet-reportgenerator-globaltool;
coverlet /path/to/test-assembly.dll --target "dotnet" --targetargs "test /path/to/test-project --no-build";
reportgenerator -reports:'../coverage.cobertura.xml' -targetdir:'CoverageReports' -reporttypes:'Cobertura';
artifacts:
reports:
cobertura: CoverageReports/Cobertura.xml
dependencies:
- build
Coverlet's global tool also supports a --format cobertura option that may help to simplify this further.