Test CLI exit code through script

Author: mxr

tests/test_cli.py

@@ -2,14 +2,14 @@
 
 import os
 import re
+import shutil
 import subprocess
-from unittest.mock import MagicMock, patch
+from typing import TYPE_CHECKING
 
-import pytest
+from openapi_generator_cli import run
 
-from openapi_generator_cli import cli, run
-
-RETURN_CODE = 23
+if TYPE_CHECKING:
+    import pytest
 
 
 def test_cli_version(capfd: pytest.CaptureFixture[str]) -> None:
@@ -49,14 +49,8 @@ def test_invalid_arg(capfd: pytest.CaptureFixture[str]) -> None:
     )
 
 
-@patch("openapi_generator_cli.run", autospec=True)
-@patch("sys.argv", ["openapi-generator-cli", "version"])
-def test_cli_exits_with_returncode(run_mock: MagicMock) -> None:
-    run_mock.return_value = subprocess.CompletedProcess(args=[], returncode=RETURN_CODE)
-
-    with pytest.raises(SystemExit) as exc_info:
-        cli()
-
-    assert exc_info.value.code == RETURN_CODE
-
-    run_mock.assert_called_once_with(["version"])
+def test_cli_script_exits_with_returncode() -> None:
+    cli_path = shutil.which("openapi-generator-cli")
+    assert cli_path is not None
+    result = subprocess.run([cli_path, "this-is-invalid-subcommand"], check=False)  # noqa: S603
+    assert result.returncode == 1