public async Task Map_ToNewObject_Mapped()
        {
            AsyncMapper mapper = new AsyncMapper();

            MapTo to = await mapper.Map(new MapFrom()
            {
                Property = 1
            });

            Assert.Equal(1, to.Property);
        }
        public void Map_Null_ThrowsArgumentNullException()
        {
            AsyncMapper mapper = new AsyncMapper();

            Assert.ThrowsAsync <ArgumentNullException>("source", () => mapper.Map(null));
        }