stest/public/Plugin/cropper/cropper_files/test/options/minContainerWidth.js

$(function () {

  'use strict';

  var $image = $(window.createCropperImage()),
      minContainerWidth = 641;

  $image.cropper({
    minContainerWidth: minContainerWidth,

    built: function () {
      var cropper = $image.data('cropper'),
          container = cropper.container;

      QUnit.test('options.minContainerWidth', function (assert) {
        assert.ok(Math.round(container.width) === minContainerWidth);
      });

    }
  });

});