Test for DNS resolution

.github/workflows/ci.yml

@@ -1,22 +1,37 @@
-name: CI
+name: Checks
 
 on:
+  pull_request:
   push:
-    branches-ignore:
-      - "github-pages/*"
-      - "gh-pages/*"
-      - "main"
-      - "master"
-  schedule:
-    # “At 00:00 on every 7th day-of-month from 1 through 31.” (https://crontab.guru)
-    - cron: "0 0 1/7 * *"
 
 jobs:
+  tests-job:
+    name: Tests
+    runs-on: ubuntu-latest
+    strategy:
+      fail-fast: false
 
-  ci-job:
-    name: Checks
-    uses: ./.github/workflows/checks.yml
+    steps:
+      - name: SCM Checkout
+        uses: actions/checkout@v4
+      - name: Free disk space
+        uses: jlumbroso/free-disk-space@main
+        with:
+          tool-cache: true
+          large-packages: false
 
-  metrics:
-    needs: [ ci-job ]
-    uses: ./.github/workflows/report.yml
+      - name: Free disk space by removing large directories
+        run: |
+          sudo rm -rf /usr/local/graalvm/
+          sudo rm -rf /usr/local/.ghcup/
+          sudo rm -rf /usr/local/share/powershell
+          sudo rm -rf /usr/local/share/chromium
+          sudo rm -rf /usr/local/lib/node_modules
+          sudo rm -rf /opt/ghc
+      - name: Setup Python & Poetry Environment
+        uses: exasol/python-toolbox/.github/actions/[email protected]
+        with:
+          python-version: '3.10'
+
+      - name: Calculate Test Coverage
+        run: poetry run pytest test/test_itde_manager_in_docker_container.py

test/integration/test_itde_manager_in_docker_container.py

@@ -127,6 +127,52 @@ def run_test():
     return source_code
 
 
+@pytest.fixture
+def itde_connect_test_impl_dns():
+    """
+    This fixture returns the test source code for starting up ITDE,connecting to it and let the DB execute a UDF which requires proper internet access.
+    The source code needs to appended to the wheel file inside the Docker container called TEST_CONTAINER.
+    """
+
+    def run_test():
+        from pathlib import Path
+
+        from exasol.nb_connector.ai_lab_config import AILabConfig
+        from exasol.nb_connector.connections import open_pyexasol_connection
+        from exasol.nb_connector.itde_manager import bring_itde_up
+        from exasol.nb_connector.itde_manager import take_itde_down
+        from exasol.nb_connector.secret_store import Secrets
+        import requests
+
+        requests.get("https://example.com/")
+        secrets = Secrets(db_file=Path("secrets.sqlcipher"), master_password="test")
+        secrets.save(AILabConfig.mem_size.value, "2")
+        secrets.save(AILabConfig.disk_size.value, "4")
+
+        bring_itde_up(secrets)
+        try:
+            con = open_pyexasol_connection(secrets)
+            try:
+                udf = textwrap.dedent('''
+                CREATE OR REPLACE PYTHON SCALAR SCRIPT test_dns(dummy INTEGER)
+                RETURNS INTEGER AS
+                def run(ctx):
+                    import requests
+                    requests.get("https://example.com/")
+                    return 1
+                ''')
+                result = con.execute(udf).fetchmany()
+                assert result[0][0] == 1
+            finally:
+                con.close()
+        finally:
+            take_itde_down(secrets)
+
+    function_source_code = textwrap.dedent(dill.source.getsource(run_test))
+    source_code = f"{function_source_code}\nrun_test()"
+    return source_code
+
+
 @pytest.fixture
 def itde_recreation_after_take_down():
     """