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ttstd-infinite-canvas/backend/internal/app/cloud_agent_runtime_tool_result_test.go

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package app
import (
"context"
"strings"
"testing"
"infinite-canvas/backend/internal/model"
)
// 线上复现:recall_lessons 经运行时工具桥执行后,交回模型的 tool 消息是 "null",
// 上游拿到空结果后返回空内容,整轮失败。任何工具结果都必须是非空的 JSON 文本。
func TestCloudAgentRuntimeToolResultIsNeverNull(t *testing.T) {
s, db, _, _ := creationTestService(t)
if err := db.Create(&model.CanvasProject{ID: "agent-canvas", UserID: "user", PayloadJSON: `{"nodes":[]}`}).Error; err != nil {
t.Fatal(err)
}
run, err := s.CreateCloudAgentRun("user", agentTestRequest(), "")
if err != nil {
t.Fatal(err)
}
for _, tc := range []struct{ name, args string }{
{"recall_lessons", `{"topic":"用户称呼偏好"}`},
{"recall_lessons", `{}`},
{"canvas_list_node_types", `{}`},
{"canvas_get_state", `{}`},
} {
var call cloudAgentCall
call.ID = "call-" + tc.name + "-" + tc.args
call.Function.Name = tc.name
call.Function.Arguments = tc.args
result, err := s.executeCloudAgentRuntimeTool(context.Background(), "user", run.ID, call)
if err != nil {
t.Fatalf("%s(%s) bridge error: %v", tc.name, tc.args, err)
}
payload, _ := result.(map[string]any)
content, _ := payload["content"].(string)
if strings.TrimSpace(content) == "" || content == "null" {
t.Fatalf("%s(%s) returned empty tool content: %#v", tc.name, tc.args, result)
}
}
}