nes-emu/controller/Controller.spec.js

A NES emulator

"use strict";

var _Controller = _interopRequireDefault(require("./Controller"));
function _interopRequireDefault(e) { return e && e.__esModule ? e : { default: e }; }
const should = require("chai").Should();
describe("Controller", () => {
  let controller;
  beforeEach(() => {
    const port = _Controller.default.createPorts().primary;
    controller = new _Controller.default(port);
  });
  it("starts in 0", () => {
    controller.toByte().should.equal(0);
  });
  it("can update button states", () => {
    controller.update("BUTTON_B", true);
    controller.update("BUTTON_LEFT", true);
    controller.toByte().should.equal(0b01000010);
  });
  it("also updates the controller port", () => {
    controller.update("BUTTON_B", true);
    controller.update("BUTTON_LEFT", true);
    controller.port.value.should.equal(0b01000010);
  });
  it("can clear all buttons", () => {
    controller.update("BUTTON_B", true);
    controller.clear();
    controller.toByte().should.equal(0);
  });
});