fix python errors

py/selenium/webdriver/common/proxy.py

@@ -35,9 +35,8 @@ def load(cls, value):
             value = value["string"]
         value = str(value).upper()
         for attr in dir(cls):
-            attr_value = getattr(cls, attr)
-            if isinstance(attr_value, dict) and "string" in attr_value and attr_value["string"] == value:
-                return attr_value
+            if getattr(cls, attr) == value:
+                return value
         raise Exception(f"No proxy type is found for {value}")
 
 
@@ -278,7 +277,7 @@ def _verify_proxy_type_compatibility(self, compatible_proxy):
     def to_capabilities(self):
         if not self.proxyType:
             raise ValueError("proxyType must be specified before use")
-        proxy_caps = {"proxyType": self.proxyType["string"].lower()}
+        proxy_caps = {"proxyType": self.proxyType.lower()}
         proxies = [
             "autodetect",
             "ftpProxy",

py/test/selenium/webdriver/common/proxy_tests.py

@@ -120,9 +120,9 @@ def test_can_init_pacproxy():
     assert PAC_PROXY["proxyAutoconfigUrl"] == proxy.proxy_autoconfig_url
 
 
-def test_can_init_empty_proxy():
+def test_errors_on_empty_proxy():
     proxy = Proxy()
-    assert ProxyType.UNSPECIFIED == proxy.proxy_type
+    assert proxy.proxy_type is None
     assert "" == proxy.http_proxy
     assert "" == proxy.ftp_proxy
     assert "" == proxy.no_proxy
@@ -135,8 +135,6 @@ def test_can_init_empty_proxy():
     assert proxy.socks_version is None
 
     options = ArgOptions()
-    options.proxy = proxy
 
-    proxy_capabilities = {}
-    proxy_capabilities["proxyType"] = "unspecified"
-    assert proxy_capabilities == options.to_capabilities().get("proxy")
+    with pytest.raises(ValueError):
+        options.proxy = proxy