update

Co-authored-by: Copilot <copilot@github.com>

tests/test_ssh_client.py

@@ -91,3 +91,18 @@ def test_rejects_non_read_only_systemctl_subcommand() -> None:
 
     with pytest.raises(SSHCommandRejectedError):
         client.validate_read_only_command("systemctl restart apache2")
+
+
+def test_truncate_output_marks_and_limits_content() -> None:
+    text = "a" * 400
+    rendered, truncated = SSHClient._truncate_output(text, max_output_bytes=256)
+
+    assert truncated is True
+    assert rendered.endswith("...[truncated]")
+
+
+def test_truncate_output_keeps_short_content() -> None:
+    rendered, truncated = SSHClient._truncate_output("short output", max_output_bytes=256)
+
+    assert truncated is False
+    assert rendered == "short output"