def setUp(self):
self.ten_btc = price(10, currency='BTC')
self.twenty_btc = price(20, currency='BTC')
self.thirty_btc = price(30, currency='BTC')
self.forty_btc = price(40, currency='BTC')
self.range_ten_twenty = pricerange(self.ten_btc, self.twenty_btc)
self.range_thirty_forty = pricerange(self.thirty_btc, self.forty_btc)
def setUp(self):
self.ten_btc = price(10, currency='BTC')
self.twenty_btc = price(20, currency='BTC')
self.thirty_dollars = price(30, currency='USD')
def test_subtraction(self):
res = self.twenty_btc - self.ten_btc
self.assertEqual(res, price(10, currency='BTC'))
