!squash test_mixins: Stub out trying to mock subprocess

Author: tony

tests/_internal/subprocess/test_mixins.py

@@ -0,0 +1,49 @@
+import pathlib
+import subprocess
+from typing import Any
+from unittest import mock
+
+import pytest
+
+from libvcs._internal.subprocess import SubprocessCommand
+
+
+def idfn(val: Any) -> str:
+    if isinstance(val, list):
+        if len(val):
+            return str(val[0])
+        return "[]]"
+
+    return str(val)
+
+
+@pytest.mark.parametrize(
+    "args,kwargs,run_kwargs",
+    [
+        [["ls"], {}, {}],
+        [[["ls", "-l"]], {}, {}],
+        [[["ls", "-al"]], {}, {"stdout": subprocess.DEVNULL}],
+    ],
+    ids=idfn,
+)
+@mock.patch("subprocess.Popen")
+def test_run(
+    mock_subprocess_popen,
+    tmp_path: pathlib.Path,
+    args: list,
+    kwargs: dict,
+    run_kwargs: dict,
+    capsys: pytest.LogCaptureFixture,
+):
+    process_mock = mock.Mock()
+    attrs = {"communicate.return_value": ("output", "error"), "returncode": 0}
+    process_mock.configure_mock(**attrs)
+    mock_subprocess_popen.return_value = process_mock
+
+    print(f"args: {args}, args[1:]: {args[1:]}")
+    cmd = args[0] if isinstance(args, list) else [args]
+    print(f"cmd: {cmd}")
+    cmd = SubprocessCommand(*args, cwd=tmp_path, **kwargs)
+    response = cmd.Popen(**run_kwargs)
+
+    assert response.returncode == 0