TST: don't pass Path objects directly into check_call

tacaswell · tacaswell · commit 96e1a8d8af6a · 2019-01-02T23:32:07.000-05:00
diff --git a/lib/matplotlib/tests/test_backend_nbagg.py b/lib/matplotlib/tests/test_backend_nbagg.py
@@ -19,7 +19,7 @@ def _notebook_run(nb_file):
         subprocess.check_call([
             "jupyter", "nbconvert", "--to", "notebook",
             "--execute", "--ExecutePreprocessor.timeout=500",
-            "--output", fout_name,
+            "--output", os.fspath(fout_name),
             os.fspath(nb_file),  # convert to str for Windows.
         ])
         with open(fout_name, 'rt') as fout:
