test: make mcp serve-agents e2e deterministic

Author: riturajFi

go/test/e2e/mcp_serve_agents_test.go

@@ -17,6 +17,17 @@ import (
 )
 
 func TestE2EInvokeAgentThroughMCPServeAgents(t *testing.T) {
+	// Setup mock server (so agent responses are deterministic and don't hit real LLMs)
+	baseURL, stopServer := setupMockServer(t, "mocks/invoke_mcp_serve_agents.json")
+	defer stopServer()
+
+	// Setup Kubernetes resources for a known-good agent
+	cli := setupK8sClient(t, false)
+	modelCfg := setupModelConfig(t, cli, baseURL)
+	agent := setupAgentWithOptions(t, cli, modelCfg.Name, nil, AgentOptions{
+		Name: "kebab-agent",
+	})
+
 	kagentURL := os.Getenv("KAGENT_URL")
 	if kagentURL == "" {
 		kagentURL = "http://localhost:8083"
@@ -123,9 +134,9 @@ func TestE2EInvokeAgentThroughMCPServeAgents(t *testing.T) {
 	}
 	require.NoError(t, json.Unmarshal(agentsResult, &callResult), string(agentsResult))
 	require.NotEmpty(t, callResult.Content)
-	require.Contains(t, callResult.Content[0].Text, "kebab-agent")
+	require.Contains(t, callResult.Content[0].Text, agent.Namespace+"/"+agent.Name)
 
-	writeLine(`{"jsonrpc":"2.0","id":4,"method":"tools/call","params":{"name":"invoke_agent","arguments":{"agent":"kebab-agent","task":"What can you do?"}}}`)
+	writeLine(fmt.Sprintf(`{"jsonrpc":"2.0","id":4,"method":"tools/call","params":{"name":"invoke_agent","arguments":{"agent":%q,"task":"What can you do?"}}}`, agent.Name))
 	invokeResult := readResponse(4)
 	require.NoError(t, json.Unmarshal(invokeResult, &callResult), string(invokeResult))
 	require.NotEmpty(t, callResult.Content)

go/test/e2e/mocks/invoke_mcp_serve_agents.json

@@ -0,0 +1,31 @@
+{
+  "openai": [
+    {
+      "name": "serve_agents_request",
+      "match": {
+        "match_type": "contains",
+        "message": {
+          "content": "What can you do?",
+          "role": "user"
+        }
+      },
+      "response": {
+        "id": "chatcmpl-1",
+        "object": "chat.completion",
+        "created": 1677652288,
+        "model": "gpt-4.1-mini",
+        "choices": [
+          {
+            "index": 0,
+            "role": "assistant",
+            "message": {
+              "content": "I can answer questions and help you with tasks. Also: kebab.",
+              "role": "assistant"
+            },
+            "finish_reason": "stop"
+          }
+        ]
+      }
+    }
+  ]
+}