import assert from "node:assert/strict";
import { describe, it } from "node:test";
import { safeFileName } from "../src/server/controllers/external-return-workbook.controller.js";

// Regression for the regex-free rewrite (ESLint no-control-regex): same output as the
// former /[<>:"/\\|?*\u0000-\u001f]/g replacement.
describe("safeFileName", () => {
  it("replaces Windows-forbidden characters", () => {
    assert.equal(safeFileName('a<b>c:d"e/f\\g|h?i*j'), "a_b_c_d_e_f_g_h_i_j");
  });

  it("replaces ASCII control characters but keeps umlauts and spaces", () => {
    assert.equal(safeFileName("Büro\u0000 Nord\u001f\t"), "Büro_ Nord_");
    assert.equal(safeFileName("x\u007fy"), "x\u007fy");
  });

  it("trims and falls back to Projekt", () => {
    assert.equal(safeFileName("  Haus A  "), "Haus A");
    assert.equal(safeFileName("   "), "Projekt");
  });
});