chore: add coverage report comment (#5716)

.github/workflows/jan-linter-and-test.yml

@@ -42,6 +42,8 @@ jobs:
     continue-on-error: true
     steps:
       - uses: actions/checkout@v3
+        with:
+          ref: ${{ github.base_ref }}
       - name: Use Node.js 20.x
         uses: actions/setup-node@v3
         with:
@@ -65,17 +67,7 @@ jobs:
         uses: actions/upload-artifact@v4
         with:
           name: ref-lcov.info
-          path: ./coverage/merged/lcov.info
-
-      - name: Generate Code Coverage report
-        id: code-coverage
-        uses: barecheck/code-coverage-action@v1
-        with:
-          github-token: ${{ secrets.GITHUB_TOKEN }}
-          lcov-file: './coverage/merged/lcov.info'
-          base-lcov-file: './coverage/merged/lcov.info'
-          send-summary-comment: true
-          show-annotations: 'warning'
+          path: coverage/merged/lcov.info
 
   test-on-macos:
     runs-on: ${{ (github.event_name == 'pull_request' && github.event.pull_request.head.repo.full_name != github.repository) && 'macos-latest' || 'macos-selfhosted-12-arm64' }}
@@ -231,3 +223,45 @@ jobs:
           name: playwright-report
           path: electron/playwright-report/
           retention-days: 2
+
+  coverage-check:
+    runs-on: ubuntu-latest
+    needs: base_branch_cov
+    continue-on-error: true
+    steps:
+      - name: Getting the repo
+        uses: actions/checkout@v3
+        with:
+          fetch-depth: 0
+
+      - name: Installing node
+        uses: actions/setup-node@v3
+        with:
+          node-version: 20
+      - name: 'Cleanup cache'
+        continue-on-error: true
+        run: |
+          rm -rf ~/jan
+          make clean
+
+      - name: Install dependencies
+        run: |
+          make lint
+
+      - name: Run test coverage
+        run: |
+          yarn test:coverage
+
+      - name: Download code coverage report from base branch
+        uses: actions/download-artifact@v4
+        with:
+          name: ref-lcov.info
+      - name: Generate Code Coverage report
+        id: code-coverage
+        uses: barecheck/code-coverage-action@v1
+        with:
+          github-token: ${{ secrets.GITHUB_TOKEN }}
+          lcov-file: './coverage/merged/lcov.info'
+          base-lcov-file: './lcov.info'
+          send-summary-comment: true
+          show-annotations: 'warning'