public void Creates_Red_Lexus()
        {
            Lexus           lexus           = new Lexus();
            RedCarDecorator redCarDecorator = new RedCarDecorator(lexus);

            Assert.Equal("Lexus is being driven.", redCarDecorator.Drive());
            Assert.Equal("Red", lexus.Color);
        }
        public void Creates_Red_BMW()
        {
            BMW             bmw             = new BMW();
            RedCarDecorator redCarDecorator = new RedCarDecorator(bmw);

            Assert.Equal("BMW is being driven.", redCarDecorator.Drive());
            Assert.Equal("Red", bmw.Color);
        }