import { describe, expect, it } from "vitest";
import { parseCsvText } from "@/domain/spreadsheet-adapter/csv";
import { gridFromRows } from "@/domain/spreadsheet-adapter/csv";
import { transformRows } from "@/domain/spreadsheet-adapter/transform";
import { buildCsv } from "@/infra/export/tabular";

describe("capacidade", () => {
  it("transforma 50.000 linhas úteis sem perder registros", () => {
    const lines = ["Origem"];
    for (let index = 0; index < 50_000; index += 1) lines.push(String(index));
    const grid = gridFromRows(parseCsvText(lines.join("\n")), 1, ["CSV"], "CSV");
    expect(grid.rows).toHaveLength(50_000);
    const output = transformRows(["Destino"], grid.headers, grid.rows, [{ sourceColumn: "Origem", modelColumn: "Destino" }]);
    expect(output).toHaveLength(50_000);
    expect(output[49_999][0]).toBe("49999");
    const csv = buildCsv(["Destino"], output.slice(0, 2));
    expect(csv.toString("utf8")).toContain("0");
  });
});