Create Playwright test harness (#23)

* added tests

* fixed tests

* creating a github action to run playwright tests

* changed github action

* changed github action for playwright tests

* changed port for tests

* changed name of github action

* changed name of test file

* changed test name

* changed script in readme

* changed the test readme file name

* updated with recommendations from Fran

* updated github action to run on all branches

Author: HannahZhuSWE

.github/workflows/playwright.yml

@@ -0,0 +1,37 @@
+# This workflow will do a clean installation of node dependencies, cache/restore them, build the source code and run tests across different versions of node
+
+name: Playwright tests
+
+# Controls when the workflow will run
+on:
+  # Triggers the workflow on push or pull request and nightly
+  push:
+  pull_request:
+  schedule: 
+    # nightly
+    - cron: '0 0 * * *'
+    
+  # Allows you to run this workflow manually from the Actions tab
+  workflow_dispatch:
+
+jobs:
+  playwright_tests:
+    # Runs on an ubuntu runner
+    runs-on: ubuntu-latest
+
+    strategy:
+      matrix:
+        node-version: [14.x, 16.x, 18.x]
+        # See supported Node.js release schedule at https://nodejs.org/en/about/releases/
+
+    steps:
+    - uses: actions/checkout@v3
+    - uses: actions/setup-node@v3
+    - name: Install dependencies
+      run: npm ci
+    - name: Install Playwright
+      run: npx playwright install --with-deps
+    - name: Build production build
+      run: npm run build
+    - name: Run your tests
+      run: npm run test