public void ColorScheme_Method()
        {
            Assert.Throws <ArgumentNullException>(() => IFacebookLikeBoxWidgetExtensions.ColorScheme(null, FacebookColorScheme.Dark));

            Assert.Equal("dark", new FacebookLikeBoxWidget().ColorScheme(FacebookColorScheme.Dark).ColorScheme());
            Assert.Equal("light", new FacebookLikeBoxWidget().ColorScheme(FacebookColorScheme.Light).ColorScheme());
        }
        public void Height_Method()
        {
            Assert.Throws <ArgumentNullException>(() => IFacebookLikeBoxWidgetExtensions.Height(null, 0));

            Assert.Equal("1", new FacebookLikeBoxWidget().Height(1).Height());
        }