fix: 优化LLM测试基础地址错误提示

tests/test_llm_endpoint_error_messages.py

@@ -0,0 +1,26 @@
+import asyncio
+from unittest.mock import AsyncMock, patch
+
+from app.api.endpoints import llm as llm_endpoint
+
+
+def test_llm_test_maps_internal_model_dump_error_to_base_url_hint():
+    """LLM 测试遇到 SDK 内部响应解析错误时应提示检查基础地址。"""
+    with patch.object(llm_endpoint.settings, "AI_AGENT_ENABLE", True), patch.object(
+        llm_endpoint.settings, "LLM_PROVIDER", "openai"
+    ), patch.object(llm_endpoint.settings, "LLM_MODEL", "gpt-4o-mini"), patch.object(
+        llm_endpoint.settings, "LLM_API_KEY", "sk-test"
+    ), patch.object(
+        llm_endpoint.settings, "LLM_BASE_URL", "https://example.com/not-api"
+    ), patch.object(
+        llm_endpoint.LLMHelper,
+        "test_current_settings",
+        AsyncMock(side_effect=RuntimeError("'str' object has no attribute 'model_dump'")),
+        create=True,
+    ):
+        resp = asyncio.run(llm_endpoint.llm_test(_="token"))
+
+    assert not resp.success
+    assert "基础地址" in resp.message
+    assert "API Base URL" in resp.message
+    assert "model_dump" not in resp.message