From c1ae6f3ea7fad0b5a0fe65baf628ea2b7a2ed6f5 Mon Sep 17 00:00:00 2001
From: Marcus Campbell <21266489+marcus-campbell@users.noreply.github.com>
Date: Wed, 19 Aug 2026 16:43:06 -0700
Subject: [PATCH] Fix hemis generation in test_vertex_to_mni_fs_nibabel to
 cover both hemispheres

rng.integers(0, 1) always returns 0, so the test only compared
coordinates for the left hemisphere. Use rng.integers(0, 2) so left and
right hemispheres are both tested.
---
 mne/tests/test_freesurfer.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/mne/tests/test_freesurfer.py b/mne/tests/test_freesurfer.py
index 0ab29802a55..a10e79f66ae 100644
--- a/mne/tests/test_freesurfer.py
+++ b/mne/tests/test_freesurfer.py
@@ -114,7 +114,7 @@ def test_vertex_to_mni_fs_nibabel(monkeypatch):
     n_check = 1000
     subject = "sample"
     vertices = rng.integers(0, 100000, n_check)
-    hemis = rng.integers(0, 1, n_check)
+    hemis = rng.integers(0, 2, n_check)
     coords = vertex_to_mni(vertices, hemis, subject, subjects_dir)
     read_mri = mne._freesurfer._read_mri_info
     monkeypatch.setattr(