test output homogenization

tests/test_nginx_status.py

 #!/usr/bin/env python3
-# -*- coding: utf-8 -*-
-'''
+
+"""
 Criticality: Normal
 Checks that the webserver is running.
-'''
-import os
+"""
+
+from pathlib import Path
 import requests
 import sys
 
+sys.path.append(str(Path(__file__).parents[1].resolve()))
+
+# pylint: disable=wrong-import-position
+from envsetup import utils as u  # noqa: E402
+
+
+def main():
+    print("Checking nginx status:")
+
+    if not Path("/etc/nginx").exists():
+        u.info("nginx dir does not exists, skip test")
+        exit(2)
 
-if not os.path.exists('/etc/nginx'):
-    print('Nginx dir does not exists, test skipped.')
-    sys.exit(2)
-else:
-    print('Checking http://127.0.0.1:1080/nginx_status response.')
     try:
-        req = requests.get('http://127.0.0.1:1080/nginx_status', proxies={'http': '', 'https': ''}, timeout=5)
+        req = requests.get(
+            "http://127.0.0.1:1080/nginx_status",
+            proxies={"http": "", "https": ""},
+            timeout=5,
+        )
         if req.status_code != 200:
-            raise Exception('Request failed with status code %s.' % req.status_code)
-        if 'Active connections' not in req.text:
-            raise Exception('Invalid response from nginx status url.')
+            raise Exception("status code: {}".format(req.status_code))
+        if "Active connections" not in req.text:
+            raise Exception("invalid response from nginx status url")
     except Exception as e:
-        print(str(e))
-        sys.exit(1)
+        u.error(str(e))
+        exit(1)
+
+    u.success("status code: {}".format(req.status_code))
+    exit(0)
+
+
+if __name__ == "__main__":
+    main()