Initial Release:

https://chatgpt.com/share/6941a2a4-7974-800f-8911-9ab0bf1e3873

tests/unit/test_backend_chezmoi.py

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+from __future__ import annotations
+
+import tempfile
+import unittest
+from pathlib import Path
+from unittest.mock import patch
+
+from dotlinker.backends.chezmoi import ChezmoiBackend
+from dotlinker.backends.base import RunContext
+from dotlinker.model import Mapping
+
+
+class TestChezmoiBackend(unittest.TestCase):
+    def test_runs_add(self) -> None:
+        with tempfile.TemporaryDirectory() as td:
+            src = Path(td) / "zshrc"
+            src.write_text("x", encoding="utf-8")
+
+            m = Mapping(name="zshrc", backend="chezmoi", src=str(src), dest=None)
+            backend = ChezmoiBackend(exe="chezmoi")
+
+            with patch("subprocess.run") as run:
+                backend.pull(m, RunContext(dry_run=False, verbose=False))
+                run.assert_called_once()
+                args, kwargs = run.call_args
+                self.assertEqual(args[0][0:2], ["chezmoi", "add"])
+                self.assertIn(str(src.resolve()), args[0])
+                self.assertTrue(kwargs["check"])
+
+    def test_dry_run_does_not_execute(self) -> None:
+        with tempfile.TemporaryDirectory() as td:
+            src = Path(td) / "zshrc"
+            src.write_text("x", encoding="utf-8")
+
+            m = Mapping(name="zshrc", backend="chezmoi", src=str(src), dest=None)
+            backend = ChezmoiBackend(exe="chezmoi")
+
+            with patch("subprocess.run") as run:
+                backend.pull(m, RunContext(dry_run=True, verbose=False))
+                run.assert_not_called()