Fix non-worktree directory detection for status

e2e_tests/test_worktree_status.py

@@ -1,10 +1,18 @@
 #!/usr/bin/env python3
 
+import re
+
 from helpers import *
 
+import pytest
 
-def test_worktree_status():
+
+@pytest.mark.parametrize("has_config", [True, False])
+def test_worktree_status(has_config):
     with TempGitRepositoryWorktree() as (base_dir, _commit):
+        if has_config:
+            with open(os.path.join(base_dir, "grm.toml"), "w") as f:
+                f.write("")
         cmd = grm(["wt", "add", "test"], cwd=base_dir)
         assert cmd.returncode == 0
 
@@ -40,3 +48,30 @@ def test_worktree_status_non_git():
         assert cmd.returncode != 0
         assert len(cmd.stdout) == 0
         assert len(cmd.stderr) != 0
+
+
+def test_worktree_status_warn_with_non_worktree_dir():
+    with TempGitRepositoryWorktree() as (base_dir, _commit):
+        cmd = grm(["wt", "add", "test"], cwd=base_dir)
+        assert cmd.returncode == 0
+
+        shell(
+            f"""
+            cd {base_dir}
+            mkdir not_a_worktree
+            """
+        )
+
+        cmd = grm(["wt", "status"], cwd=base_dir)
+
+        assert cmd.returncode == 0
+        assert len(cmd.stdout) != 0
+        assert len(cmd.stderr) != 0
+        assert (
+            re.match(
+                ".*error.*not_a_worktree.*not a valid worktree directory",
+                cmd.stderr,
+                re.IGNORECASE,
+            )
+            is not None
+        )