tests/cli(fmt): capture workspace root normalization gap

Author: tony

tests/cli/test_fmt.py

@@ -3,6 +3,7 @@
 from __future__ import annotations
 
 import logging
+import pathlib
 import typing as t
 
 import pytest
@@ -11,8 +12,6 @@
 from vcspull.cli.fmt import format_config, format_config_file, normalize_repo_config
 
 if t.TYPE_CHECKING:
-    import pathlib
-
     from _pytest.logging import LogCaptureFixture
 
 
@@ -65,6 +64,60 @@ def test_both_url_and_repo(self) -> None:
 class TestFormatConfig:
     """Test configuration formatting."""
 
+    @pytest.mark.xfail(
+        reason="Workspace root normalization not yet implemented in formatter.",
+        strict=True,
+    )
+    @pytest.mark.parametrize(
+        "config, expected_roots",
+        [
+            pytest.param(
+                {
+                    "~/study/c": {
+                        "cpython": {"repo": "git+https://github.com/python/cpython.git"},
+                    },
+                    "~/study/c/": {
+                        "tmux": {"repo": "git+https://github.com/tmux/tmux.git"},
+                    },
+                },
+                ["~/study/c/"],
+                id="tilde-mixed-trailing-slash",
+            ),
+            pytest.param(
+                {
+                    str(pathlib.Path.home() / "study" / "c"): {
+                        "cpython": {"repo": "git+https://github.com/python/cpython.git"},
+                    },
+                    "~/study/c/": {
+                        "tmux": {"repo": "git+https://github.com/tmux/tmux.git"},
+                    },
+                },
+                ["~/study/c/"],
+                id="home-vs-absolute",
+            ),
+            pytest.param(
+                {
+                    "./study/c": {
+                        "cpython": {"repo": "git+https://github.com/python/cpython.git"},
+                    },
+                    "~/study/c/": {
+                        "tmux": {"repo": "git+https://github.com/tmux/tmux.git"},
+                    },
+                },
+                ["~/study/c/"],
+                id="relative-vs-tilde",
+            ),
+        ],
+    )
+    def test_workspace_root_normalization(
+        self,
+        config: dict[str, t.Any],
+        expected_roots: list[str],
+    ) -> None:
+        """Ensure format_config merges duplicate workspace roots."""
+        formatted, _changes = format_config(config)
+        assert list(formatted.keys()) == expected_roots
+
     def test_sort_directories(self) -> None:
         """Test that directories are sorted alphabetically."""
         config = {