NODEDC_1C/llm_normalizer/backend/tests/addressMcpClientEncoding.test.ts

import { afterEach, describe, expect, it, vi } from "vitest";
import { executeAddressMcpMetadata, executeAddressMcpQuery } from "../src/services/addressMcpClient";

const ORIGINAL_FETCH = globalThis.fetch;

afterEach(() => {
  globalThis.fetch = ORIGINAL_FETCH;
  vi.restoreAllMocks();
});

describe("address MCP encoding repair", () => {
  it("repairs UTF-8/CP1251 mojibake in object rows", async () => {
    const payload = {
      success: true,
      data: [
        {
          "Период": "2020-07-30T12:00:00Z",
          "Регистратор": "Поступление на расчетный счет 0001",
          "СчетДт": "51",
          "СчетКт": "62.01",
          "РЎСѓРјРјР°": "20000",
          "Контрагент": "Группа СВК"
        }
      ]
    };

    globalThis.fetch = vi.fn(async () =>
      new Response(JSON.stringify(payload), {
        status: 200,
        headers: {
          "content-type": "application/json"
        }
      })
    ) as typeof fetch;

    const result = await executeAddressMcpQuery({
      query: "SELECT 1",
      limit: 20,
      account_scope: []
    });

    expect(result.error).toBeNull();
    expect(result.fetched_rows).toBe(1);
    expect(result.rows[0]?.["Контрагент"]).toBe("Группа СВК");
    expect(result.rows[0]?.["Регистратор"]).toContain("Поступление");
  });

  it("parses get_metadata text-table payload", async () => {
    const payload = {
      success: true,
      data: `[2]{"FullName","Synonym"}:
  Document.VATDoc,VAT document
  Register.VATRegister,VAT register`
    };

    globalThis.fetch = vi.fn(async () =>
      new Response(JSON.stringify(payload), {
        status: 200,
        headers: {
          "content-type": "application/json"
        }
      })
    ) as typeof fetch;

    const result = await executeAddressMcpMetadata({
      meta_type: "Документ",
      name_mask: "ндс",
      limit: 10
    });

    expect(result.error).toBeNull();
    expect(result.fetched_rows).toBe(2);
    expect(result.rows[0]?.["FullName"]).toBe("Document.VATDoc");
    expect(result.rows[0]?.["Synonym"]).toBe("VAT document");
  });
});