Coverage Generation is broken for workspace packages

[Skycoder42]

When executing tests with coverage collection in a child package of a workspace, the coverage is always empty.

Steps to Reproduce

1. Create an empty dart package
2. Create a child package below that package
3. Set resolution: workspace on the child package and add workspace: [ "packages/<package-name>" ] to the parent
4. Run dart pub get in the parent folder
5. Run dart test --coverage=coverage in the child folder
6. Inspecting the created coverage files, you will see that they will all be empty like this: {"type":"CodeCoverage","coverage":[]}

The same happens when using the new --coverage-path option.

Simply removing resolution: workspace and running dart pub get again will make it work again, but that is of course not a solution.

Sample project: cov_test_ws.zip

System Information

Dart version: 3.10.1
package:test Version: 1.25.6
Environments: Any. Happens in the CI and locally, for windows, macos and linux

[mrverdant13]

I can confirm this issue is present for test 1.28.0 as well