ci(sqlalchemy-spanner): add compliance tests against emulator GitHub Actions workflow

Author: sakthivelmanii

.github/workflows/sqlalchemy-spanner-compliance-tests-against-emulator.yml

@@ -0,0 +1,66 @@
+permissions:
+  contents: read
+
+on:
+  pull_request:
+    paths:
+      - 'packages/sqlalchemy-spanner/**'
+      - '.github/workflows/sqlalchemy-spanner-compliance-tests-against-emulator.yml'
+  push:
+    branches:
+      - main
+    paths:
+      - 'packages/sqlalchemy-spanner/**'
+      - '.github/workflows/sqlalchemy-spanner-compliance-tests-against-emulator.yml'
+
+defaults:
+  run:
+    working-directory: packages/sqlalchemy-spanner
+
+name: Run SQLAlchemy Spanner compliance tests against emulator
+jobs:
+  check_changes:
+    runs-on: ubuntu-latest
+    outputs:
+      run_sqlalchemy_spanner: ${{ steps.filter.outputs.sqlalchemy_spanner }}
+    steps:
+      - uses: actions/checkout@df4cb1c069e1874edd31b4311f1884172cec0e10 # v6.0.3
+        with:
+          persist-credentials: false
+      - uses: dorny/paths-filter@fbd0ab8f3e69293af611ebaee6363fc25e6d187d # v4.0.1
+        id: filter
+        with:
+          filters: |
+            sqlalchemy_spanner:
+              - 'packages/sqlalchemy-spanner/**'
+              - '.github/workflows/sqlalchemy-spanner-compliance-tests-against-emulator.yml'
+
+  compliance-tests:
+    needs: check_changes
+    if: ${{ needs.check_changes.outputs.run_sqlalchemy_spanner == 'true' }}
+    runs-on: ubuntu-latest
+
+    services:
+      emulator:
+        image: gcr.io/cloud-spanner-emulator/emulator:latest # zizmor: ignore[unpinned-images]
+        ports:
+          - 9010:9010
+          - 9020:9020
+
+    steps:
+      - name: Checkout code
+        uses: actions/checkout@df4cb1c069e1874edd31b4311f1884172cec0e10 # v6.0.3
+        with:
+          persist-credentials: false
+      - name: Set up Python 3.14
+        uses: actions/setup-python@ece7cb06caefa5fff74198d8649806c4678c61a1 # v6
+        with:
+          python-version: "3.14"
+      - name: Install nox
+        run: python -m pip install nox
+      - name: Run nox compliance_test_20
+        run: nox -s compliance_test_20
+        env:
+          SPANNER_EMULATOR_HOST: localhost:9010
+          GOOGLE_CLOUD_PROJECT: emulator-test-project
+          GOOGLE_CLOUD_TESTS_CREATE_SPANNER_INSTANCE: true