Adding a test for restart_itde in a container (#98)

* making mypy happy

* linting errors only

* Adding intermediate status checks in the restart_itde test

* Adding failure messages to the test

* debugging the test

* debugging the test

* debugging the test

* debugging the test

* debugging the test

* debugging the test

* restoring all integration tests

doc/changes/changes_0.2.9.md

@@ -10,4 +10,6 @@ Post-release fixes.
   - Enables fingerprints in the host name.
   - Handles correctly special characters in the password. 
 * #89: Connecting a new AI-Lab container to the Docker DB network when the latter container restarts.
-* #93: Refactoring the ITDE manager interface.
+* #93: Refactoring the ITDE manager interface.
+* #94: Adding an integration test for restart_itde() in a container.
+* #95: Adding an integration test for get_itde_status() in a container.

exasol/nb_connector/itde_manager.py

@@ -105,10 +105,15 @@ def _add_current_container_to_db_network(network_name: str) -> None:
         if not container:
             return
         network = _get_docker_network(docker_client, network_name)
-        if network and (container not in network.containers):
+        if network and not _is_container_connected_to_network(container, network):
             network.connect(container.id)
 
 
+def _is_container_connected_to_network(container, network) -> bool:
+    network.reload()
+    return container in network.containers
+
+
 def _is_current_container_visible(network_name: str) -> bool:
     """
     For the Docker Edition returns True if the current (AI-Lab) container
@@ -123,7 +128,7 @@ def _is_current_container_visible(network_name: str) -> bool:
         network = _get_docker_network(docker_client, network_name)
         if not network:
             return False
-        return container in network.containers
+        return _is_container_connected_to_network(container, network)
 
 
 def _get_docker_network(docker_client: docker.DockerClient, network_name: str) -> Optional[Network]: