public void ConversionForUnitsOfCustomQuantity(double fromValue, HowMuchUnit fromUnit, HowMuchUnit toUnit, double expectedValue)
{
// Intentionally don't map conversion Some->Some, it is not necessary
var unitConverter = new UnitConverter();
unitConverter.SetConversionFunction <HowMuch>(HowMuchUnit.Some, HowMuchUnit.ATon, x => new HowMuch(x.Value * 2, HowMuchUnit.ATon));
unitConverter.SetConversionFunction <HowMuch>(HowMuchUnit.Some, HowMuchUnit.AShitTon, x => new HowMuch(x.Value * 10, HowMuchUnit.AShitTon));
var foundConversionFunction = unitConverter.GetConversionFunction <HowMuch>(fromUnit, toUnit);
var converted = foundConversionFunction(new HowMuch(fromValue, fromUnit));
Assert.Equal(expectedValue, converted.Value);
Assert.Equal(toUnit, converted.Unit);
}
public HowMuch(double value, HowMuchUnit unit)
{
Unit = unit;
Value = value;
}