public void Convert_ReturnsConversion()
{
var spec = new IntegerGreaterThanZero();
var converter = (Expression<Func<double, int>>)(d => (int)d);
var convertedSpec = spec.From(converter);
Assert.That(convertedSpec, Is.TypeOf<Conversion<double, int>>());
Assert.That(convertedSpec, Has.Property("Inner").EqualTo(spec));
Assert.That(convertedSpec, Has.Property("Converter").EqualTo(converter));
}
