Example of deferred command

Author: tony

tests/cmd/test_git.py

@@ -3,6 +3,7 @@
 
 import pytest
 
+from libvcs._internal.subprocess import SubprocessCommand
 from libvcs.cmd import git
 
 
@@ -11,3 +12,20 @@ def test_run(dir_type: Callable, tmp_path: pathlib.Path):
     repo = git.Git(dir=dir_type(tmp_path))
 
     assert repo.dir == tmp_path
+
+
+@pytest.mark.parametrize("dir_type", [str, pathlib.Path])
+def test_run_deferred(dir_type: Callable, tmp_path: pathlib.Path):
+    class GitDeferred(git.Git):
+        def run(self, args, **kwargs):
+            return SubprocessCommand(["git", *args], **kwargs)
+
+    g = GitDeferred(dir=dir_type(tmp_path))
+    cmd = g.run(["help"])
+
+    assert g.dir == tmp_path
+    assert cmd.args == ["git", "help"]
+
+    assert cmd.run(capture_output=True, text=True).stdout.startswith(
+        "usage: git [--version] [--help] [-C <path>]"
+    )