ci: Improve display of test results using JUnit XML

.github/workflows/build.yml

@@ -321,7 +321,7 @@ jobs:
 
       - name: "Test"
         if: matrix.crosscompile != true
-        run: ctest --timeout 45 ${{ matrix.ctest_args }}
+        run: ctest --timeout 45 --output-junit junit.xml ${{ matrix.ctest_args }}
         working-directory: build
         env:
           # Render analyzer waveform tests to an offscreen buffer
@@ -331,6 +331,13 @@ jobs:
           CTEST_PARALLEL_LEVEL: 1
           CTEST_OUTPUT_ON_FAILURE: 1
 
+      - name: "Upload Test Results"
+        if: always() && matrix.crosscompile != true
+        uses: actions/upload-artifact@v3
+        with:
+          name: Test Results for ${{ matrix.name}}
+          path: build/junit.xml
+
       - name: Benchmark
         if: matrix.crosscompile != true
         run: cmake --build . --target mixxx-benchmark --config RelWithDebInfo
@@ -536,3 +543,13 @@ jobs:
         run: curl -X POST -d '{}' ${{ env.NETLIFY_BUILD_HOOK }}
         env:
           NETLIFY_BUILD_HOOK: ${{ secrets.NETLIFY_BUILD_HOOK }}
+
+  upload_event_file:
+    name: "Upload Event File"
+    runs-on: ubuntu-latest
+    steps:
+      - name: Upload Event File
+        uses: actions/upload-artifact@v3
+        with:
+          name: Event File
+          path: ${{ github.event_path }}

.github/workflows/test-results.yml

@@ -0,0 +1,34 @@
+name: "Test Results"
+
+on:
+  workflow_run:
+    workflows: ["Build"]
+    types:
+      - completed
+permissions: {}
+
+jobs:
+  test-results:
+    name: "Test Results"
+    runs-on: ubuntu-latest
+    if: github.event.workflow_run.conclusion != 'skipped'
+    permissions:
+      checks: write
+      contents: read
+      issues: read
+      actions: read
+    steps:
+      - name: Download and Extract Artifacts
+        uses: dawidd6/action-download-artifact@246dbf436b23d7c49e21a7ab8204ca9ecd1fe615
+        with:
+          run_id: ${{ github.event.workflow_run.id }}
+          path: artifacts
+
+      - name: Publish Test Results
+        uses: EnricoMi/publish-unit-test-result-action@v2
+        with:
+          comment_mode: off
+          commit: ${{ github.event.workflow_run.head_sha }}
+          event_file: artifacts/Event File/event.json
+          event_name: ${{ github.event.workflow_run.event }}
+          files: "artifacts/Test Results */*.xml"