public void Cannot_compare_if_the_value_is_not_a_double()
        {
            var valueComparer = new DoubleValueComparer();

            valueComparer.CanCompare("x").Should().BeFalse();
            valueComparer.CanCompare(1).Should().BeFalse();
            valueComparer.CanCompare(3.14M).Should().BeFalse();
        }
        public void Can_compare_if_the_value_is_a_double()
        {
            var valueComparer = new DoubleValueComparer();

            valueComparer.CanCompare(1.0).Should().BeTrue();
            valueComparer.CanCompare(3.34).Should().BeTrue();
            valueComparer.CanCompare(-1.24).Should().BeTrue();
        }