json.test.js

import { createServer, request as _request } from "node:http";
import assert, { deepStrictEqual, strictEqual } from "node:assert";
import formidable from "../../src/index.js";

const testData = {
  numbers: [1, 2, 3, 4, 5],
  nested: { key: "val" },
};

const PORT = 13535;
test("json", (done) => {
  const server = createServer((req, res) => {
    const form = formidable({});

    form.parse(req, (err, fields) => {
      strictEqual(Object.getPrototypeOf(fields), null);
      deepStrictEqual({ ...fields }, {
        numbers: [1, 2, 3, 4, 5],
        nested: { key: "val" },
      });

      res.end();
      server.close();
      done();
    });
  });

  server.listen(PORT, (err) => {
    assert(!err, "should not have error, but be falsey");

    const request = _request({
      port: PORT,
      method: "POST",
      headers: {
        "Content-Type": "application/json",
      },
    });

    request.write(JSON.stringify(testData));
    request.end();
  });
});