15: Added unit testing to PR process.

.github/workflows/prtest.yml

@@ -0,0 +1,27 @@
+name: Four PR Test Workflow
+
+on:
+  pull_request:
+    branches:
+      - main
+      - master
+      - stage
+
+jobs:
+  publish:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Check out repository code.
+        uses: actions/checkout@v4
+
+      - name: Install Node.js
+        uses: actions/setup-node@v4
+        with:
+          cache: npm
+          node-version-file: '.nvmrc'
+
+      - name: Install dependencies
+        run: npm ci
+
+      - name: Run unit tests
+        run: npm run test

.nvmrc

@@ -0,0 +1 @@
+20.11.1