Run the unit tests in CI

.github/workflows/pull-requests.yml

@@ -0,0 +1,31 @@
+name: Pull requests
+
+on:
+  pull_request:
+
+jobs:
+  unit-test:
+    runs-on: ubuntu-latest
+    defaults:
+      run:
+        working-directory: ./core
+
+    strategy:
+      matrix:
+        node:
+          - "current"
+          - "lts/*"
+
+    name: Run unit tests on Node ${{ matrix.node }}
+
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v4
+
+      - name: Install Dependencies
+        uses: ./.github/workflows/actions/install-dependencies
+        with:
+          version: ${{ matrix.node }}
+
+      - name: Run unit tests
+        run: npm test