deer-flow/frontend/tests/unit/core/threads/send-message.test.ts

import type { Message } from "@langchain/langgraph-sdk";
import { expect, test } from "@rstest/core";

import { buildThreadSubmitMessages } from "@/core/threads/hooks";

test("builds thread submit messages with hidden sidecar context before the visible user message", () => {
  const hiddenContext = {
    type: "human",
    content: "Hidden sidecar context",
    additional_kwargs: {
      hide_from_ui: true,
      sidecar_context: true,
    },
  } as Message;

  const messages = buildThreadSubmitMessages({
    text: "What should we do next?",
    additionalInputMessages: [hiddenContext],
  });

  expect(messages).toEqual([
    hiddenContext,
    {
      type: "human",
      content: [{ type: "text", text: "What should we do next?" }],
      additional_kwargs: {},
    },
  ]);
});

test("keeps uploaded files on the visible user message only", () => {
  const messages = buildThreadSubmitMessages({
    text: "Use this file",
    additionalInputMessages: [
      {
        type: "human",
        content: "Hidden sidecar context",
        additional_kwargs: { hide_from_ui: true },
      } as Message,
    ],
    filesForSubmit: [
      {
        filename: "report.pdf",
        size: 42,
        path: "/uploads/report.pdf",
        status: "uploaded",
      },
    ],
  });

  expect(messages[0]?.additional_kwargs).toEqual({ hide_from_ui: true });
  expect(messages[1]?.additional_kwargs).toEqual({
    files: [
      {
        filename: "report.pdf",
        size: 42,
        path: "/uploads/report.pdf",
        status: "uploaded",
      },
    ],
  });
});

test("keeps human input response metadata on the hidden user message", () => {
  const response = {
    version: 1,
    kind: "human_input_response",
    source: "ask_clarification",
    request_id: "clarification:call-abc",
    response_kind: "option",
    option_id: "option-2",
    value: "staging",
  };

  const messages = buildThreadSubmitMessages({
    text: 'For your clarification "Which environment?", my answer is: staging',
    additionalKwargs: {
      hide_from_ui: true,
      human_input_response: response,
    },
  });

  expect(messages).toEqual([
    {
      type: "human",
      content: [
        {
          type: "text",
          text: 'For your clarification "Which environment?", my answer is: staging',
        },
      ],
      additional_kwargs: {
        hide_from_ui: true,
        human_input_response: response,
      },
    },
  ]);
});

test("uses the caller-provided human message id for the visible user message", () => {
  const messages = buildThreadSubmitMessages({
    text: "hello",
    humanMessageId: "local-human-1",
  });

  expect(messages).toEqual([
    {
      type: "human",
      id: "local-human-1",
      content: [{ type: "text", text: "hello" }],
      additional_kwargs: {},
    },
  ]);
});