OpenFrontIO/tests/LangCode.test.ts

import fs from "fs";
import path from "path";
import { z } from "zod";

describe("LangCode Filename Check", () => {
  const langDir = path.join(__dirname, "../resources/lang");

  test("lang_code matches filename", () => {
    const files = fs
      .readdirSync(langDir)
      .filter((file) => file.endsWith(".json"));

    if (files.length === 0) {
      console.log("No resources/lang/*.json files found. Skipping check.");
      return;
    }

    const schema = z.object({
      lang: z.object({
        lang_code: z.string(),
      }),
    });

    for (const file of files) {
      const filePath = path.join(langDir, file);
      const jsonData = schema.parse(
        JSON.parse(fs.readFileSync(filePath, "utf-8")),
      );

      const fileNameWithoutExt = path.basename(file, ".json");
      const langCode = jsonData.lang?.lang_code;

      expect(fileNameWithoutExt).toBe(langCode);
    }
  });
});