Running gql-cli --version test in subprocess mode

Author: leszekhanusz

tests/test_cli.py

@@ -370,6 +370,7 @@ def test_cli_get_transport_no_protocol(parser):
         get_transport(args)
 
 
+@pytest.mark.script_launch_mode('subprocess')
 def test_cli_ep_version(script_runner):
     ret = script_runner.run("gql-cli", "--version")