Add test to verify proxy conflict raises ValueError for mismatched proxy settings

Author: sbahar619

tests/test_resources.py

@@ -1,5 +1,7 @@
 import pytest
 import yaml
+import kubernetes
+import os
 from testcontainers.k3s import K3SContainer
 
 from ocp_resources.exceptions import ResourceTeardownError
@@ -103,3 +105,15 @@ def test_resource_context_manager_exit(self, client):
         with pytest.raises(ResourceTeardownError):
             with TestSecretExit(name="test-context-manager-exit", namespace="default", client=client):
                 pass
+
+    def test_proxy_conflict_raises_value_error(self):
+        os.environ["OPENSHIFT_PYTHON_WRAPPER_CLIENT_USE_PROXY"] = "1"
+        os.environ["HTTPS_PROXY"] = "http://env-proxy.com"
+        client_configuration = kubernetes.client.Configuration()
+        client_configuration.proxy = "http://not-env-proxy.com"
+        with pytest.raises(
+            ValueError,
+            match="Conflicting proxy settings: client_configuration.proxy=http://not-env-proxy.com, "
+            "but the environment variable 'OPENSHIFT_PYTHON_WRAPPER_CLIENT_USE_PROXY' defines proxy as http://env-proxy.com.",
+        ):
+            get_client(client_configuration=client_configuration)