text: import { renderHook, act } from "@testing-library/react-hooks";
  import useJsonToCsv from "./useJsonToCsv";
  import { convertToCsv, saveCsv } from "../helpers";
  
  jest.mock("../helpers", () => ({
    convertToCsv: jest.fn(({ data }) => data),
    saveCsv: jest.fn(),
  }));
  
  describe("useJsonToCsv()", () => {
    const data = [
        {"index": 0},
        {"index": 1},
        {"index": 2}
      ],
      fields = {
        "index": "Index"
      };
  
    it("should convert and save csv when save is triggered", () => {
      const { result } = renderHook(() => useJsonToCsv());
      
      result.current.saveAsCsv({ data, fields });
  
      expect(convertToCsv).toHaveBeenCalledWith(
        expect.objectContaining({
          data,
          fields: ["index"],
          headers: ["Index"],
          separator: ","
        })
      );
      expect(saveCsv).toHaveBeenCalledWith(
        expect.objectContaining({
          data,
          fileformat: "csv",
          filename: "json-to-csv"
        })
      );
    });
  });
  