cylon-ble/spec/lib/device-information.spec.js

Cylon module for Bluetooth Low Energy (LE) peripherals

"use strict";

var BLEDeviceInformation = lib("device-information");

var Cylon = require("cylon");

describe("Cylon.Drivers.BLE.BLEDeviceInformation", function() {
  var driver;

  beforeEach(function() {
    driver = new BLEDeviceInformation({
      connection: {}
    });
  });

  it("is a subclass of Cylon.Driver", function() {
    expect(driver).to.be.an.instanceOf(BLEDeviceInformation);
    expect(driver).to.be.an.instanceOf(Cylon.Driver);
  });

  describe("#constructor", function() {
    it("sets @serviceId to the passed serviceId", function() {
      driver = new BLEDeviceInformation({
        connection: {},
        serviceId: "serviceId"
      });

      expect(driver.serviceId).to.be.eql("serviceId");
    });

    it("sets @serviceId to the '180f' by default", function() {
      expect(driver.serviceId).to.be.eql("180a");
    });
  });

  describe("#start", function() {
    it("triggers the callback", function() {
      var callback = spy();
      driver.start(callback);
      expect(callback).to.be.called;
    });
  });

  describe("#halt", function() {
    it("triggers the callback", function() {
      var callback = spy();
      driver.halt(callback);
      expect(callback).to.be.called;
    });
  });

  describe("#getModelNumber", function() {
    var callback;

    beforeEach(function() {
      callback = spy();
      driver._getServiceCharacteristic = stub().yields(null, "value");
    });

    it("reads the service characteristic from the device", function() {
      driver.getModelNumber(callback);
      expect(driver._getServiceCharacteristic).to.be.calledWith("2a24");
      expect(callback).to.be.calledWith(null, "value");
    });
  });

  describe("#getSystemId", function() {
    var callback;

    beforeEach(function() {
      callback = spy();
      driver._getServiceCharacteristic = stub().yields(null, "value");
    });

    it("reads the service characteristic from the device", function() {
      driver.getSystemId(callback);
      expect(driver._getServiceCharacteristic).to.be.calledWith("2a23");
      expect(callback).to.be.calledWith(null, "value");
    });
  });

  describe("#getHardwareRevision", function() {
    var callback;

    beforeEach(function() {
      callback = spy();
      driver._getServiceCharacteristic = stub().yields(null, "value");
    });

    it("reads the service characteristic from the device", function() {
      driver.getHardwareRevision(callback);
      expect(driver._getServiceCharacteristic).to.be.calledWith("2a27");
      expect(callback).to.be.calledWith(null, "value");
    });
  });

  describe("#getFirmwareRevision", function() {
    var callback;

    beforeEach(function() {
      callback = spy();
      driver._getServiceCharacteristic = stub().yields(null, "value");
    });

    it("reads the service characteristic from the device", function() {
      driver.getFirmwareRevision(callback);
      expect(driver._getServiceCharacteristic).to.be.calledWith("2a26");
      expect(callback).to.be.calledWith(null, "value");
    });
  });

  describe("#getManufacturerName", function() {
    var callback;

    beforeEach(function() {
      callback = spy();
      driver._getServiceCharacteristic = stub().yields(null, "value");
    });

    it("reads the service characteristic from the device", function() {
      driver.getManufacturerName(callback);
      expect(driver._getServiceCharacteristic).to.be.calledWith("2a29");
      expect(callback).to.be.calledWith(null, "value");
    });
  });

  describe("#getPnPId", function() {
    var callback;

    beforeEach(function() {
      callback = spy();
      driver._getServiceCharacteristic = stub().yields(null, "value");
    });

    it("reads the service characteristic from the device", function() {
      driver.getPnPId(callback);
      expect(driver._getServiceCharacteristic).to.be.calledWith("2a50");
      expect(callback).to.be.calledWith(null, "value");
    });
  });

  describe("#_getServiceCharacteristic", function() {
    var callback;

    beforeEach(function() {
      callback = spy();
      driver.connection.readServiceCharacteristic = spy();
    });

    it("calls #readServiceCharacteristic on the connection", function() {
      driver._getServiceCharacteristic("hello", callback);
      expect(driver.connection.readServiceCharacteristic).to.be.calledWith(
        "180a",
        "hello",
        callback
      );
    });
  });
});