GHA: Run test coverage

Author: HenrikBengtsson

.github/workflows/test-coverage.yaml

@@ -0,0 +1,64 @@
+on: [push]
+
+name: test-coverage.yaml
+
+permissions: read-all
+
+jobs:
+  test-coverage:
+    runs-on: ubuntu-latest
+    env:
+      GITHUB_PAT: ${{ secrets.GITHUB_TOKEN }}
+
+    steps:
+      - uses: actions/checkout@v4
+
+      - name: Assert CODECOV_TOKEN is set
+        run: |
+          if [[ -z "${{secrets.CODECOV_TOKEN}}" ]]; then
+            >&2 echo "::error::ERROR: 'secrets.CODECOV_TOKEN' not set"
+            exit 1
+          fi
+
+      - uses: r-lib/actions/setup-r@v2
+        with:
+          use-public-rspm: true
+
+      - uses: r-lib/actions/setup-r-dependencies@v2
+        with:
+          extra-packages: |
+            any::covr
+            any::xml2
+            any::remotes
+          needs: coverage
+
+      - name: Install package itself (special case)
+        run: |
+          install.packages(".", repos = NULL, type = "source")
+        shell: Rscript {0}
+
+      - name: Test coverage
+        run: |
+          cov <- covr::package_coverage(
+            quiet = FALSE,
+            clean = FALSE,
+            install_path = file.path(normalizePath(Sys.getenv("RUNNER_TEMP"), winslash = "/"), "package")
+          )
+          print(cov)
+          covr::to_cobertura(cov)
+        shell: Rscript {0}
+
+      - uses: codecov/codecov-action@v4
+        with:
+          fail_ci_if_error: ${{ github.event_name != 'pull_request' && true || false }}
+          file: ./cobertura.xml
+          plugin: noop
+          disable_search: true
+          token: ${{ secrets.CODECOV_TOKEN }}
+
+      - name: Upload test results
+        if: failure()
+        uses: actions/upload-artifact@v4
+        with:
+          name: coverage-test-failures
+          path: ${{ runner.temp }}/package