public void ShouldThrowArgumentNullExceptionWhenAddedMediaConfigureActionIsNull()
        {
            var cssClass = new CssClass("Button");

            Assert.Throws <ArgumentNullException>(() => cssClass.AddMediaQuery("test", null));
        }
        public void ShouldThrowArgumentNullExceptionWhenAddedMediaIsNull()
        {
            var cssClass = new CssClass("Button");

            Assert.Throws <ArgumentNullException>(() => cssClass.AddMediaQuery(null, p => p.WithStyle("test", "test")));
        }