Post coverage comment on CI runs (#238)

Author: markmur

.github/workflows/ci.yml

@@ -59,13 +59,24 @@ jobs:
   test:
     name: Run jest tests
     runs-on: ubuntu-latest
+    permissions:
+      contents: read
+      pull-requests: write
     steps:
       - uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4.2.2
 
       - name: Setup
         uses: ./.github/actions/setup
 
-      - run: yarn test
+      - run: yarn test --coverage --testPathPatterns="modules/@shopify/checkout-sheet-kit/tests" --coverageReporters=json-summary
+
+      - name: Coverage comment
+        if: github.event_name == 'pull_request'
+        uses: MishaKav/jest-coverage-comment@main
+        with:
+          coverage-summary-path: ./coverage/coverage-summary.json
+          title: 'Coverage Report'
+          create-new-comment: false
 
   test-android:
     name: Run Android Tests