Fix Python 3.12 compatibility (#6965)

frenzymadness · web-flow · commit 0188ad8fd6e5 · 2023-08-04T09:18:21.000+02:00
.joinpath with an empty argument no longer works as before thanks to this change in CPython: python/cpython@cea910e#diff-2e741d925220d74a9cc04cda1314d3649d9d189c0efc7db18e5387a51225b61c This change mimics the old internal behavior by using _paths attribute directly.
diff --git a/tests/conftest.py b/tests/conftest.py
@@ -91,7 +91,7 @@ def _make_notebook_app(**kwargs):
     )
 
     # Copy the schema files.
-    test_data = str(files("jupyterlab_server.test_data").joinpath(""))
+    test_data = str(files("jupyterlab_server.test_data")._paths[0])  # type: ignore
     src = pathlib.PurePath(test_data, "schemas", "@jupyterlab")
     dst = pathlib.PurePath(str(schemas_dir), "@jupyterlab")
     if os.path.exists(dst):

Original file line number	Diff line number	Diff line change
`@@ -91,7 +91,7 @@ def _make_notebook_app(**kwargs):`
`91`	`91`	`)`
`92`	`92`
`93`	`93`	`# Copy the schema files.`
`94`		`- test_data = str(files("jupyterlab_server.test_data").joinpath(""))`
	`94`	`+ test_data = str(files("jupyterlab_server.test_data")._paths[0]) # type: ignore`
`95`	`95`	`src = pathlib.PurePath(test_data, "schemas", "@jupyterlab")`
`96`	`96`	`dst = pathlib.PurePath(str(schemas_dir), "@jupyterlab")`
`97`	`97`	`if os.path.exists(dst):`