import { CallbacksManager } from "./CallbacksManager";

describe("CallbacksManager tests", () => {
    let callbacksManager: CallbacksManager;
    beforeEach(() => {
        callbacksManager = new CallbacksManager();
    });
    it("add callback", () => {
        const cb1 = jest.fn();
        const cb = callbacksManager.addCallback(cb1)[1];
        cb("value");
        expect(cb1.mock.calls.length).toBe(1);
        expect(cb1.mock.calls[0][0]).toBe("value");
    });
});