Add test case

jupyterlab_git/git.py

@@ -972,7 +972,6 @@ async def show_prefix(self, path, contents_manager):
                 return {
                     "code": code,
                     "path": None,
-                    "relative_path": relative_git_path,
                 }
             else:
                 result = {

jupyterlab_git/tests/test_handlers.py

@@ -10,6 +10,8 @@
 from .testutils import assert_http_error, maybe_future
 from tornado.httpclient import HTTPClientError
 
+from pathlib import Path
+
 
 def test_mapping_added():
     mock_web_app = Mock()
@@ -112,6 +114,52 @@ async def test_git_show_prefix(mock_execute, jp_fetch, jp_root_dir):
     )
 
 
+@patch("jupyterlab_git.git.execute")
+async def test_git_show_prefix_nested_directory(mock_execute, jp_fetch, jp_root_dir):
+    # Given
+    path = "path/to/repo"
+
+    local_path = jp_root_dir / "test_path"
+
+    mock_execute.return_value = maybe_future((0, str(path), ""))
+
+    # When
+    response = await jp_fetch(
+        NAMESPACE,
+        local_path.name + "/subfolder",
+        "show_prefix",
+        body="{}",
+        method="POST",
+    )
+
+    # Then
+    assert response.code == 200
+    payload = json.loads(response.body)
+    assert payload["path"] == str(path)
+
+    mock_execute.assert_has_calls(
+        [
+            call(
+                ["git", "rev-parse", "--show-prefix"],
+                cwd=str(local_path / "subfolder"),
+                timeout=20,
+                env=None,
+                username=None,
+                password=None,
+                is_binary=False,
+            ),
+        ]
+    )
+
+    try:
+        Path(path).absolute().relative_to(Path(local_path).absolute())
+    except ValueError:
+        # pass the test if the path is not a subdirectory of the root directory
+        pass
+    else:
+        assert False, "The path should not be a subdirectory of the root directory"
+
+
 async def test_git_show_prefix_for_excluded_path(
     jp_fetch, jp_server_config, jp_root_dir
 ):