public void Get_MapContainsConversion_ReturnsConversion()
        {
            var expected  = new Mock <IConversion <int, string> >().Object;
            var underTest = new ConversionMap <int>();

            underTest.Set(expected);

            var actual = underTest.Get <string>().Value;

            Assert.Equal(expected, actual);
        }
        public void Get_MapDoesNotContainConversion_ReturnsNone()
        {
            var underTest = new ConversionMap <int>();

            Assert.False(underTest.Get <string>().Exists);
        }