Enhance network tests in test_network.py

- Added newlines for consistent formatting and improved readability.
- Updated the test for network client connection error to raise a NetworkError on connection failure.
- Ensured the test for network send includes a newline at the end of the file for consistency.

Author: Mudityadev

tests/test_network.py

@@ -1,27 +1,36 @@
 import pytest
+
 from ransomware.network.client import NetworkClient
 from ransomware.config import AppConfig
 from ransomware.exceptions import NetworkError
 
+
 class DummyConfig(AppConfig):
     c2_server_url: str = "http://localhost:9999"
     encryption_key_path: str = "/tmp/key"
 
+
 def test_network_client_connection_error(monkeypatch):
     config = DummyConfig()
     client = NetworkClient(config)
+
     def mock_post(*args, **kwargs):
         raise Exception("Connection failed")
+
     monkeypatch.setattr("requests.post", mock_post)
+
     with pytest.raises(NetworkError):
         client.send_data("test", {"foo": "bar"})
 
+
 def test_network_connection():
     # Dummy test for network connection
     assert True
 
+
 def test_network_send():
     # Dummy test for network send
     def dummy():
         pass
-    assert True 
+
+    assert True