diff --git a/test/test_mount.py b/test/test_mount.py
index f32c1e5..4f61795 100644
--- a/test/test_mount.py
+++ b/test/test_mount.py
@@ -1,6 +1,7 @@
 import argparse
 from unittest import mock
 import pytest
+import subprocess
 
 from locutus.mount import run_mount
 
@@ -161,3 +162,39 @@ def test_mount_usage_message(capsys):
 	assert rc == 1
 	err = capsys.readouterr().err
 	assert 'Usage:' in err
+
+
+@mock.patch("locutus.mount.LocutusConfig")
+@mock.patch("os.path.isdir", return_value=True)
+@mock.patch("subprocess.run")
+def test_mount_calledprocesserror_on_mount(mock_run, mock_isdir, mock_config, tmp_path, capsys):
+    mock_config.return_value.get_repo.return_value = "/repo"
+    mock_config.return_value.env = {}
+    archives = ["a", "b", "c"]
+    mock_run.side_effect = [
+        mock.Mock(stdout="\n".join(archives) + "\n", returncode=0),  # listing works
+        subprocess.CalledProcessError(1, ["borg", "mount"])          # mount fails
+    ]
+    args = make_args("dummy.toml", "dummy.rc", str(tmp_path), archive="0")
+    rc = run_mount(args)
+    assert rc == 1
+    err = capsys.readouterr().err
+    assert "borg mount failed:" in err
+
+
+@mock.patch("locutus.mount.LocutusConfig")
+@mock.patch("os.path.isdir", return_value=True)
+@mock.patch("subprocess.run")
+def test_mount_exception_on_mount(mock_run, mock_isdir, mock_config, tmp_path, capsys):
+    mock_config.return_value.get_repo.return_value = "/repo"
+    mock_config.return_value.env = {}
+    archives = ["a", "b", "c"]
+    mock_run.side_effect = [
+        mock.Mock(stdout="\n".join(archives) + "\n", returncode=0),  # listing works
+        Exception()          # mount fails
+    ]
+    args = make_args("dummy.toml", "dummy.rc", str(tmp_path), archive="0")
+    rc = run_mount(args)
+    assert rc == 1
+    err = capsys.readouterr().err
+    assert "borg mount failed (unexpected)" in err