TrainSignManage/WebFrame/bower_components/select2/tests/integration/dom-changes.js

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module('DOM integration');

test('adding a new unselected option changes nothing', function (assert) {
  // Any browsers which support mutation observers will not trigger the event
  var expected = 4;
  if (window.MutationObserver) {
    expected = 2;
  } else if (!window.addEventListener) {
    expected = 2;
  }

  assert.expect(expected);

  var asyncDone = null;
  var syncDone = assert.async();

  if (expected != 2) {
    asyncDone = assert.async();
  }

  var $ = require('jquery');
  var Options = require('select2/options');
  var Select2 = require('select2/core');

  var $select = $(
    '<select>' +
      '<option>One</option>' +
      '<option>Two</option>' +
    '</select>'
  );

  $('#qunit-fixture').append($select);

  var select = new Select2($select);

  select.on('selection:update', function (args) {
    assert.equal(
      args.data.length,
      1,
      'There was more than one selection'
    );

    assert.equal(
      args.data[0].id,
      'One',
      'The selection changed to something other than One'
    );

    if (expected != 2) {
      asyncDone();
    }
  });

  assert.equal(
    $select.val(),
    'One'
  );

  var $option = $('<option>Three</option>');