connection-state-recovery.ts

import expect from "expect.js";
import { io } from "..";
import { wrap, BASE_URL, success } from "./support/util";

describe("connection state recovery", () => {
  it("should have an accessible socket id equal to the server-side socket id (default namespace)", () => {
    return wrap((done) => {
      const socket = io(BASE_URL, {
        forceNew: true,
      });

      socket.emit("hi");

      socket.on("hi", () => {
        const id = socket.id;

        socket.io.engine.close();

        socket.on("connect", () => {
          expect(socket.id).to.eql(id); // means that the reconnection was successful
          done();
        });
      });
    });
  });
});