UPSTREAM: <carry>: chore: add unittest workflow.

Signed-off-by: Humair Khan <[email protected]>

.github/resources/unittests/application_default_credentials.json

@@ -0,0 +1,12 @@
+{
+  "type": "service_account",
+  "project_id": "your-project-id",
+  "private_key_id": "your-private-key-id",
+  "private_key": "-----BEGIN PRIVATE KEY-----\nYour private key content\n-----END PRIVATE KEY-----\n",
+  "client_email": "[email protected]",
+  "client_id": "your-client-id",
+  "auth_uri": "https://accounts.google.com/o/oauth2/auth",
+  "token_uri": "https://accounts.google.com/o/oauth2/token",
+  "auth_provider_x509_cert_url": "https://www.googleapis.com/oauth2/v1/certs",
+  "client_x509_cert_url": "https://www.googleapis.com/robot/v1/metadata/x509/[email protected]"
+}

.github/workflows/unit-tests.yaml

@@ -0,0 +1,21 @@
+name: Unit Tests
+on:
+  pull_request:
+  workflow_dispatch:
+
+env:
+  RESOURCES_DIR: ${{ github.workspace }}/.github/resources
+jobs:
+  functest:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v3
+      - name: Setup Go
+        uses: actions/setup-go@v4
+        with:
+          go-version: '1.20.x'
+      - name: Run Unit Test
+        working-directory: ${{ github.workspace }}/backend/src
+        env:
+          GOOGLE_APPLICATION_CREDENTIALS: ${{ env.RESOURCES_DIR }}/unittests/application_default_credentials.json
+        run: go test ./...