ci: add unit test job and update coverage command in GitHub Actions workflow

Author: lposen

.github/workflows/test.yml

@@ -50,7 +50,7 @@ jobs:
         env:
           CC_TEST_REPORTER_ID: ${{ secrets.CODE_CLIMATE_KEY }}
         with:
-          coverageCommand: yarn test --coverage --coverageReporters lcov
+          coverageCommand: yarn test:coverage --coverageReporters lcov
           coverageLocations: |
             ${{github.workspace}}/coverage/lcov.info:lcov
       # - name: Upload coverage to Codecov
@@ -62,6 +62,27 @@ jobs:
       #     name: codecov-umbrella
       #     fail_ci_if_error: true
 
+  test-comment:
+    name: Unit tests
+    runs-on: ubuntu-latest
+
+    steps:
+      - uses: actions/checkout@v3
+
+      - name: Setup
+        uses: ./.github/actions/setup
+
+      - name: Run tests
+        run: |
+          yarn test:coverage --coverageReporters json-summary
+
+      - name: Test coverage comment
+        id: coverageComment
+        uses: MishaKav/jest-coverage-comment@main
+        with:
+          hide-comment: false
+          coverage-summary-path: ./coverage/coverage-summary.json
+
   build-library:
     runs-on: ubuntu-latest
     steps: