gecko-dev/dom/fmradio/test/marionette/test_seek_up_and_down.js

/* Any copyright is dedicated to the Public Domain.
 * http://creativecommons.org/publicdomain/zero/1.0/ */

MARIONETTE_TIMEOUT = 30000;

SpecialPowers.addPermission("fmradio", true, document);

var FMRadio = window.navigator.mozFMRadio;

function verifyInitialState() {
  log("Verifying initial state.");
  ok(FMRadio);
  is(FMRadio.enabled, false);
  setUp();
}

function setUp() {
  let frequency = FMRadio.frequencyLowerBound + FMRadio.channelWidth;
  FMRadio.enable(frequency);
  FMRadio.onenabled = seekUp;
}

function seekUp() {
  log("Seek up");
  var request = FMRadio.seekUp();
  ok(request);

  request.onsuccess = function() {
    seekDown();
  };

  request.onerror = function() {
    ok(false, "Seekup request should not fail.");
  };
}

function seekDown() {
  log("Seek down");
  var request = FMRadio.seekDown();
  ok(request);

  request.onsuccess = function() {
    cleanUp();
  };

  request.onerror = function() {
    ok(false, "Seekdown request should not fail.");
  };
}

function cleanUp() {
  FMRadio.disable();
  FMRadio.ondisabled = function() {
    FMRadio.ondisabled = null;
    ok(!FMRadio.enabled);
    finish();
  };
}

verifyInitialState();