class Favorites {

  static create(listing_id) {
    modify_create_favorite(find_favorite(listing_id));
  }

  static find_favorite(listing_id) {
    return $("#i-favorite-"+listing_id);
  }

  static modify_create_favorite(object) {
    object.removeClass('fa-heart-o').addClass('fa-heart').parent().attr('data-method','delete');
  }
}

it("will change the class", function() {
    fixture.set(favorite_html);
    Favorites.create('17');
    expect( $('#i-favorite-17', fixture.el) ).not.toHaveClass( 'fa-heart-o')
    expect( $('#i-favorite-17', fixture.el) ).toHaveClass( 'fa-heart')
    expect( $('#i-favorite-17', fixture.el).parent() ).toHaveAttr("data-method",'delete')
    expect(jQuery).toBeDefined();
  });