Fix version test

Author: akb

tests/test_app.py

@@ -86,13 +86,8 @@ def test_exec_before():
 
 def test_cli_version(runner):
     args = ["--version"]
-
-    result = runner.invoke(mario.cli.cli, args)
-
-    assert result.output == f"mario, version {mario.__version__}\n"
-    assert result.output.rstrip()[-1].isdigit()
-    assert not result.exception
-    assert result.exit_code == 0
+    result = helpers.run(args).decode()
+    assert result == f"mario, version {mario.__version__}\n"
 
 
 def test_config_file(tmp_path):