test proxy bypass with config from registry

tests/test_utils.py

@@ -1,5 +1,6 @@
 # -*- coding: utf-8 -*-
 
+import os
 from io import BytesIO
 
 import pytest
@@ -599,3 +600,50 @@ def test_should_bypass_proxies_no_proxy(
     no_proxy = '192.168.0.0/24,127.0.0.1,localhost.localdomain,172.16.1.1'
     # Test 'no_proxy' argument
     assert should_bypass_proxies(url, no_proxy=no_proxy) == expected
+
+
+@pytest.mark.skipif(os.name != 'nt', reason='Test only on Windows')
+@pytest.mark.parametrize(
+    'url, expected', (
+            ('http://192.168.0.1:5000/', True),
+            ('http://192.168.0.1/', True),
+            ('http://172.16.1.1/', True),
+            ('http://172.16.1.1:5000/', True),
+            ('http://localhost.localdomain:5000/v1.0/', True),
+            ('http://172.16.1.22/', False),
+            ('http://172.16.1.22:5000/', False),
+            ('http://google.com:5000/v1.0/', False),
+    ))
+def test_should_bypass_proxies_win_registry(url, expected, monkeypatch):
+    """Tests for function should_bypass_proxies to check if proxy
+    can be bypassed or not with Windows registry settings
+    """
+    if compat.is_py3:
+        import winreg
+    else:
+        import _winreg as winreg
+
+    class RegHandle:
+        def Close(self):
+            pass
+
+    ie_settings = RegHandle()
+
+    def OpenKey(key, subkey):
+        return ie_settings
+
+    def QueryValueEx(key, value_name):
+        if key is ie_settings:
+            if value_name == 'ProxyEnable':
+                return [1]
+            elif value_name == 'ProxyOverride':
+                return ['192.168.*;127.0.0.1;localhost.localdomain;172.16.1.1']
+
+    monkeypatch.setenv('http_proxy', '')
+    monkeypatch.setenv('https_proxy', '')
+    monkeypatch.setenv('ftp_proxy', '')
+    monkeypatch.setenv('no_proxy', '')
+    monkeypatch.setenv('NO_PROXY', '')
+    monkeypatch.setattr(winreg, 'OpenKey', OpenKey)
+    monkeypatch.setattr(winreg, 'QueryValueEx', QueryValueEx)
+    assert should_bypass_proxies(url, no_proxy=None) == expected