Add unit test for proxy

Make sure that the proxy is configured properly when added to client.

Author: cequele

spec/lib/twingly/http_spec.rb

@@ -689,11 +689,9 @@ class CustomError < StandardError; end
       end
     end
 
-    fdescribe "proxy" do
-      let(:test_url) { "http://example.com" }
-
-      context "when a proxy is set" do
-        let(:proxy_url) { "http://localhost:1080" }
+    describe "proxy" do
+      context "when a proxy is provided" do
+        let(:proxy_url) { "http://127.0.0.1:8080" }
         let(:proxy_client) do
           described_class.new(
             base_user_agent: base_user_agent,
@@ -703,22 +701,10 @@ class CustomError < StandardError; end
           )
         end
 
-        before(:all) do
-          let(:toxiproxy) { Toxiproxy.new(host: "localhost", port: 8474) }
-          let(:proxy) { toxiproxy.create("proxy", listen: "localhost:1080", upstream: "https://example.com") }
-        end
-
-        after(:all) do
-          proxy.delete
-          toxiproxy.close
-        end
-
-        it "sets the proxy URL correctly in the Twingly HTTP client" do
-          allow(proxy_client).to receive(proxy).and_return(proxy_url)
-          response = proxy_client.get("https://example.com")
+        it "sets the proxy" do
+          connection = proxy_client.send(:create_http_client)
 
-          expect(proxy_client.proxy).to eq(proxy_url)
-          expect(response.status).to eq(200)
+          expect(connection.proxy.uri.to_s).to eq(proxy_url)
         end
       end
     end