mapaks / tdd

Test Driven Development

tdd's Issues

Multi-Currency Money

Suppose we have a report like this:

Instrument	Shares	Price	Total
IBM	1000	25	25000
GE	400	100	40000
		Total	65000

To make a multi-currency repot, we need to add currencies:

Instrument	Shares	Price	Total
IBM	1000	25 USD	25000 USD
GE	400	150 CHF	60000 CHF
		Total	65000 USD

Exchange rates:

From	To	Rate
CHF	USD	1.5

• We need to be able to add amount in two different currencies and convert the result given a set of exchange rates.
• We need to be able to multiply an amount (price per share) by a number (number of shares) and receive an amount.