RHOAIENG-18459: chore(tests/containers): handle multiple podman machi…

…nes and improve debugging output when podman machine is not found (#869)

* RHOAIENG-18459: chore(tests/containers): improve debugging output when podman machine is not found

* RHOAIENG-18459: chore(tests/containers): reduce the number of podman machine inspect calls, by giving it all machine names at once

tests/containers/podman_machine_utils.py

@@ -11,13 +11,15 @@
 def open_ssh_tunnel(machine_predicate: Callable[[tests.containers.schemas.PodmanMachine], bool],
                     local_port: int, remote_port: int, remote_interface: str = "localhost") -> subprocess.Popen:
     # Load and parse the Podman machine data
-    json_data = subprocess.check_output(["podman", "machine", "inspect"], text=True)
+    machine_names = subprocess.check_output(["podman", "machine", "list", "--quiet"], text=True).splitlines()
+    json_data = subprocess.check_output(["podman", "machine", "inspect", *machine_names], text=True)
     inspect = tests.containers.schemas.PodmanMachineInspect(machines=json.loads(json_data))
     machines = inspect.machines
 
     machine = next((m for m in machines if machine_predicate(m)), None)
     if not machine:
-        raise ValueError(f"Machine matching given predicate not found")
+        raise ValueError(f"Machine matching given predicate not found:"
+                         f" the available machines are: {machines}")
 
     ssh_command = [
         "ssh",

tests/containers/workbenches/workbench_image_test.py

@@ -89,6 +89,7 @@ def test_ipv6_only(self, image: str, test_frame):
                         host = "localhost"
                         port = podman_machine_utils.find_free_port()
                         socket_path = os.path.realpath(docker_utils.get_socket_path(client.client))
+                        logging.debug(f"{socket_path=}")
                         process = podman_machine_utils.open_ssh_tunnel(
                             machine_predicate=lambda m: os.path.realpath(m.ConnectionInfo.PodmanSocket.Path) == socket_path,
                             local_port=port, remote_port=container.port,