public void Video_Method()
        {
            Assert.Throws <ArgumentNullException>(() => IMailRuHtmlHelperExtensions.Video(null, widget => { }));
            Assert.Throws <ArgumentNullException>(() => new MailRuHtmlHelper().Video(null));

            Assert.Equal(new MailRuHtmlHelper().Video().ToHtmlString(), new MailRuHtmlHelper().Video(x => { }));
            Assert.Equal(new MailRuHtmlHelper().Video().ToHtmlString(), new MailRuHtmlHelper().Video(x => x.Id("id")));
        }
        public void Icq_Method()
        {
            Assert.Throws <ArgumentNullException>(() => IMailRuHtmlHelperExtensions.Icq(null, widget => { }));
            Assert.Throws <ArgumentNullException>(() => new MailRuHtmlHelper().Icq(null));

            Assert.Equal(new MailRuHtmlHelper().Icq().ToHtmlString(), new MailRuHtmlHelper().Icq(x => { }));
            Assert.Equal(new MailRuHtmlHelper().Icq().Account("account").ToHtmlString(), new MailRuHtmlHelper().Icq(x => x.Account("account")));
        }
        public void LikeButton_Method()
        {
            Assert.Throws <ArgumentNullException>(() => IMailRuHtmlHelperExtensions.LikeButton(null, widget => { }));
            Assert.Throws <ArgumentNullException>(() => new MailRuHtmlHelper().LikeButton(null));

            Assert.Equal(new MailRuHtmlHelper().LikeButton().ToHtmlString(), new MailRuHtmlHelper().LikeButton(x => { }));
            Assert.Equal(new MailRuHtmlHelper().LikeButton().Type(MailRuLikeButtonType.All).ToHtmlString(), new MailRuHtmlHelper().LikeButton(x => x.Type(MailRuLikeButtonType.All)));
        }
        public void Faces_Method()
        {
            Assert.Throws <ArgumentNullException>(() => IMailRuHtmlHelperExtensions.Faces(null, widget => { }));
            Assert.Throws <ArgumentNullException>(() => new MailRuHtmlHelper().Faces(null));

            Assert.Equal(new MailRuHtmlHelper().Faces().ToHtmlString(), new MailRuHtmlHelper().Faces(x => { }));
            Assert.Equal(new MailRuHtmlHelper().Faces().Domain("domain").ToHtmlString(), new MailRuHtmlHelper().Faces(x => x.Domain("domain")));
        }