ci: run tests in the firebase emulator

Author: thatfiredev

.github/workflows/test.yaml

@@ -13,10 +13,11 @@ jobs:
     strategy:
       matrix:
         node-version:
-          - 14.x
+          - 20.x
+          - 22.x
     steps:
-      - uses: actions/checkout@v1
-      - uses: actions/setup-node@v1
+      - uses: actions/checkout@v4
+      - uses: actions/setup-node@v4
         with:
           node-version: ${{ matrix.node-version }}
 
@@ -30,6 +31,10 @@ jobs:
       - run: npm run bootstrap
       - run: npm run lint
       - run: npm run test
+      - name: Run tests against emulator
+        run: |
+          npm install -g firebase-tools
+          firebase emulators:exec --only database --project fake-project-id 'npm run test'
       - run: npm run coverage
 
       - name: Coveralls