chore: fix benchmark imports (#2343)

<!-- This is an auto-generated comment: release notes by coderabbit.ai
-->
## Summary by CodeRabbit

- **Tests**
- Enhanced test coverage to boost reliability by incorporating
parameterized testing for module import validation.
- Refined the benchmarking approach for command line interface tests,
ensuring more consistent performance verification.
<!-- end of auto-generated comment: release notes by coderabbit.ai -->

---------

Signed-off-by: Jinzhe Zeng <jinzhe.zeng@rutgers.edu>
Co-authored-by: pre-commit-ci[bot] <66853113+pre-commit-ci[bot]@users.noreply.github.com>
Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>

Author: 3 people

tests/test_cli.py

@@ -1,8 +1,10 @@
 # SPDX-License-Identifier: LGPL-3.0-or-later
 """Tests for the command line interface of the reacnetgenerator package."""
 
+import importlib
 import subprocess
 import sys
+from unittest import mock
 
 import pytest
 
@@ -18,7 +20,16 @@ def test_module_script():
     assert output.splitlines()[0] == f"ReacNetGenerator v{expected_version}"
 
 
-@pytest.mark.benchmark
 def test_cli():
     """Test reacnetgenerator command."""
     subprocess.check_output(["reacnetgenerator", "-h"]).decode("ascii")
+
+
+@pytest.mark.parametrize("mod_name", ["reacnetgenerator.commandline"])
+def test_bench_module_import(benchmark, mod_name):
+    """Benchmark the import time."""
+
+    @benchmark
+    def _():
+        with mock.patch("sys.modules", {}):
+            importlib.import_module(mod_name, "test_bench_imports")