add unittest for triggring network exception to fix code coverage

tests/exploits/jetpack_version_detection_test.py

@@ -1,5 +1,6 @@
 """Unit tests for Agent Asteroid: Jetpack Exploit"""
 
+import pytest
 import requests_mock as req_mock
 
 from agent import definitions
@@ -60,3 +61,16 @@ def testCVE20249487_whenNotVulnerable_reportNothing(
 
     assert accept is True
     assert len(vulnerabilities) == 0
+
+
+def testCVE20249487_whenNetworkErrorOccurs_reportNothing(
+    caplog: pytest.LogCaptureFixture,
+) -> None:
+    """Jetpack Exploit unit test: case when network error occurs."""
+
+    exploit_instance = jetpack_version_detection.JetpackExploit()
+    target = definitions.Target("http", "nonexesit", 80)
+
+    vulnerabilities = exploit_instance.check(target)
+    assert len(vulnerabilities) == 0
+    assert "Network error occurred" in caplog.text