def test_buy(self):
""" Test purchases """
stock_data = StockData()
t1 = Transaction(2, 3.0)
cost = stock_data.apply_transaction(t1)
self.assertEqual(cost, 6.0)
self.assertEqual(stock_data.holding, 2)
self.assertEqual(stock_data.transactions, [t1])
def test_sell(self):
""" Test sales """
stock_data = StockData()
t1 = Transaction(5, 2.5)
cost = stock_data.apply_transaction(t1)
self.assertEqual(cost, 12.5)
t2 = Transaction(-2, 3.2)
cost = stock_data.apply_transaction(t2)
self.assertEqual(cost, -6.4)
self.assertEqual(stock_data.holding, 3)
self.assertEqual(stock_data.transactions, [t1, t2])
def test_sorted_holdings_value(self):
""" Test get_sorted_holdings_value """
stock_data = StockData()
ts = [Transaction(4, 2.5, date=self.get_today(-4)), # 2.5, 2.5, 2.5, 2.5
Transaction(-2, 3.2, date=self.get_today(-3)), # 2.5, 2.5
Transaction(1, 3.0, date=self.get_today(-2)), # 2.5, 2.5, 3.0
Transaction(2, 2.6, date=self.get_today(-1)), # 2.5, 2.5, 2.6, 2.6, 3.0
Transaction(-3, 2.9, date=self.get_today(0))] # 2.6, 3.0
for t in ts:
stock_data.apply_transaction(t)
# Total holding should be 5.6
self.assertEqual(stock_data.holding, 2)
self.assertEqual(stock_data.transactions, ts)
self.assertEqual(stock_data.sorted_holdings_value(), 5.6)
def test_add_history(self):
""" Add some historical data and get it back """
stock_data = StockData()
stock_data.add_history_value(1.0, self.get_today(0))
stock_data.add_history_value(2.0, self.get_today(-1))
self.assertEqual(stock_data.get_historical_value(0), 1.0)
self.assertEqual(stock_data.get_historical_value(1), 2.0)
self.assertEqual(stock_data.get_historical_value(2), -1.0)
def test_get_historical_value(self):
""" Test that we ignore weekends for historical values """
# date[0] is a Tuesday, so date[4] and date[5] are weekends
stock_data = StockData()
dates = map(lambda x: datetime.date(2013, 1, x), range(1, 10))
for ii in range(9):
stock_data.add_history_value(ii, dates[ii])
# First dates back from 8
self.assertEquals(stock_data.get_historical_value(0, start_date=dates[8]), 8)
self.assertEquals(stock_data.get_historical_value(1, start_date=dates[8]), 7)
self.assertEquals(stock_data.get_historical_value(2, start_date=dates[8]), 6)
self.assertEquals(stock_data.get_historical_value(3, start_date=dates[8]), 3)
self.assertEquals(stock_data.get_historical_value(4, start_date=dates[8]), 2)
self.assertEquals(stock_data.get_historical_value(5, start_date=dates[8]), 1)
self.assertEquals(stock_data.get_historical_value(6, start_date=dates[8]), 0)
self.assertEquals(stock_data.get_historical_value(7, start_date=dates[8]), -1)
# Then back from 7
self.assertEquals(stock_data.get_historical_value(0, start_date=dates[7]), 7)
self.assertEquals(stock_data.get_historical_value(1, start_date=dates[7]), 6)
self.assertEquals(stock_data.get_historical_value(2, start_date=dates[7]), 3)
self.assertEquals(stock_data.get_historical_value(3, start_date=dates[7]), 2)
self.assertEquals(stock_data.get_historical_value(4, start_date=dates[7]), 1)
self.assertEquals(stock_data.get_historical_value(5, start_date=dates[7]), 0)
self.assertEquals(stock_data.get_historical_value(6, start_date=dates[7]), -1)
# From 6
self.assertEquals(stock_data.get_historical_value(0, start_date=dates[6]), 6)
self.assertEquals(stock_data.get_historical_value(1, start_date=dates[6]), 3)
self.assertEquals(stock_data.get_historical_value(2, start_date=dates[6]), 2)
self.assertEquals(stock_data.get_historical_value(3, start_date=dates[6]), 1)
self.assertEquals(stock_data.get_historical_value(4, start_date=dates[6]), 0)
self.assertEquals(stock_data.get_historical_value(5, start_date=dates[6]), -1)
# From 5 - getting there...
self.assertEquals(stock_data.get_historical_value(0, start_date=dates[5]), 3)
self.assertEquals(stock_data.get_historical_value(1, start_date=dates[5]), 2)
self.assertEquals(stock_data.get_historical_value(2, start_date=dates[5]), 1)
self.assertEquals(stock_data.get_historical_value(3, start_date=dates[5]), 0)
self.assertEquals(stock_data.get_historical_value(4, start_date=dates[5]), -1)
# From 4 - last one
self.assertEquals(stock_data.get_historical_value(0, start_date=dates[4]), 3)
self.assertEquals(stock_data.get_historical_value(1, start_date=dates[4]), 2)
self.assertEquals(stock_data.get_historical_value(2, start_date=dates[4]), 1)
self.assertEquals(stock_data.get_historical_value(3, start_date=dates[4]), 0)
self.assertEquals(stock_data.get_historical_value(4, start_date=dates[4]), -1)