add python frontend tests to CI

.github/workflows/ci-tests.yml

@@ -186,6 +186,39 @@ jobs:
               working-directory: Nominatim/test/bdd
 
 
+    python-api-test:
+        needs: create-archive
+        runs-on: ubuntu-22.04
+
+        steps:
+            - uses: actions/download-artifact@v3
+              with:
+                  name: full-source
+
+            - name: Unpack Nominatim
+              run: tar xf nominatim-src.tar.bz2
+
+            - uses: ./Nominatim/.github/actions/setup-postgresql
+              with:
+                  postgresql-version: 15
+                  postgis-version: 3
+
+            - uses: ./Nominatim/.github/actions/build-nominatim
+              with:
+                  flavour: 'ubuntu-22'
+
+            - name: Install test prerequsites
+              run: sudo apt-get install -y -qq python3-behave
+
+            - name: Install Python webservers
+              run: pip3 install starlette asgi_lifespan httpx
+
+            - name: BDD tests (starlette)
+              run: |
+                  python3 -m behave -DREMOVE_TEMPLATE=1 -DBUILDDIR=$GITHUB_WORKSPACE/build -DAPI_ENGINE=starlette --format=progress3
+              working-directory: Nominatim/test/bdd
+
+
     install:
         runs-on: ubuntu-latest
         needs: create-archive