CI: Upload go unit test reports on pushes to main (#105280)

* generate junit reports in backend unit tests

* add quotes

* add my branch for testing

* Fix results file

* add missing quote

* remove my branch

.github/workflows/backend-unit-tests.yml

@@ -21,7 +21,7 @@ permissions: {}
 
 jobs:
   grafana:
-    # Run this workflow only for PRs from forks; if it gets merged into `main` or `release-*`, 
+    # Run this workflow only for PRs from forks
     # the `pr-backend-unit-tests-enterprise` workflow will run instead
     if: github.event_name == 'pull_request' && github.event.pull_request.head.repo.fork == true
     strategy:
@@ -58,6 +58,7 @@ jobs:
 
   grafana-enterprise:
     # Run this workflow for non-PR events (like pushes to `main` or `release-*`) OR for internal PRs (PRs not from forks)
+    # If it gets merged into `main` or `release-*`, then a junit test result is uploaded to GCS.
     if: github.event_name != 'pull_request' || github.event.pull_request.head.repo.fork == false
     strategy:
       matrix:
@@ -85,6 +86,10 @@ jobs:
         uses: ./.github/actions/setup-enterprise
         with:
           github-app-name: 'grafana-ci-bot'
+      - run: echo "RESULTS_FILE=$(date --rfc-3339=seconds --utc | sed -s 's/ /-/g')_${SHARD/\//_}.xml" >> "$GITHUB_ENV"
+        env:
+          SHARD: ${{ matrix.shard }}
+      - run: go install github.com/jstemmer/go-junit-report/v2@85bf4716ac1f025f2925510a9f5e9f5bb347c009
       - name: Generate Go code
         run: make gen-go
       - name: Run unit tests
@@ -92,4 +97,23 @@ jobs:
           SHARD: ${{ matrix.shard }}
         run: |
           readarray -t PACKAGES <<< "$(./scripts/ci/backend-tests/shard.sh -N"$SHARD")"
-          go test -short -timeout=30m "${PACKAGES[@]}"
+          go test -short -v -timeout=30m "${PACKAGES[@]}" | tee >(go-junit-report -set-exit-code > "$RESULTS_FILE")
+      - name: Log in to GCS
+        if: github.event_name == 'push' && github.repository == 'grafana/grafana' && (success() || failure())
+        uses: grafana/shared-workflows/actions/login-to-gcs@login-to-gcs-v0.2.0
+        with:
+          service_account: github-junit-uploader@grafanalabs-workload-identity.iam.gserviceaccount.com
+          bucket: grafana-test-results
+      - if: github.event_name == 'push' && github.repository == 'grafana/grafana' && (success() || failure())
+        run: echo "BUCKET_PATH=go-unit-tests/$(echo ${REF_NAME} | sed 's/\//-/g')" >> "$GITHUB_ENV"
+        env:
+          REF_NAME: ${{ github.ref_name }}
+      - name: Upload test results
+        if: github.event_name == 'push' && github.repository == 'grafana/grafana' && (success() || failure())
+        uses: grafana/shared-workflows/actions/push-to-gcs@push-to-gcs-v0.2.0
+        with:
+          bucket: grafana-test-results
+          service_account: github-junit-uploader@grafanalabs-workload-identity.iam.gserviceaccount.com
+          environment: "dev" # Can be dev/prod (defaults to dev)
+          path: ${{ env.RESULTS_FILE }}
+          bucket_path: ${{ env.BUCKET_PATH }}