test: add test for Agent.create_turn non-streaming response (#1078)

Summary:

This tests the fix to the SDK in
https://github.com/meta-llama/llama-stack-client-python/pull/141

Test Plan:

LLAMA_STACK_CONFIG=fireworks pytest -s -v tests/client-sdk/
--safety-shield meta-llama/Llama-Guard-3-8B

tests/client-sdk/agents/test_agents.py

@@ -319,7 +319,7 @@ def test_custom_tool(llama_stack_client, agent_config):
     logs = [str(log) for log in EventLogger().log(response) if log is not None]
     logs_str = "".join(logs)
     assert "-100" in logs_str
-    assert "CustomTool" in logs_str
+    assert "get_boiling_point" in logs_str
 
 
 # TODO: fix this flaky test
@@ -403,7 +403,7 @@ def xtest_override_system_message_behavior(llama_stack_client, agent_config):
     logs_str = "".join(logs)
     print(logs_str)
     assert "-100" in logs_str
-    assert "CustomTool" in logs_str
+    assert "get_boiling_point" in logs_str
 
 
 def test_rag_agent(llama_stack_client, agent_config):
@@ -527,3 +527,33 @@ def test_rag_and_code_agent(llama_stack_client, agent_config):
         logs = [str(log) for log in EventLogger().log(response) if log is not None]
         logs_str = "".join(logs)
         assert f"Tool:{tool_name}" in logs_str
+
+
+def test_create_turn_response(llama_stack_client, agent_config):
+    client_tool = TestClientTool()
+    agent_config = {
+        **agent_config,
+        "input_shields": [],
+        "output_shields": [],
+        "client_tools": [client_tool.get_tool_definition()],
+    }
+
+    agent = Agent(llama_stack_client, agent_config, client_tools=(client_tool,))
+    session_id = agent.create_session(f"test-session-{uuid4()}")
+
+    response = agent.create_turn(
+        messages=[
+            {
+                "role": "user",
+                "content": "What is the boiling point of polyjuice?",
+            },
+        ],
+        session_id=session_id,
+        stream=False,
+    )
+    steps = response.steps
+    assert len(steps) == 3
+    assert steps[0].step_type == "inference"
+    assert steps[1].step_type == "tool_execution"
+    assert steps[1].tool_calls[0].tool_name == "get_boiling_point"
+    assert steps[2].step_type == "inference"