def test_successful_set_sell_quote():
bid_quote = Quote(MARKET, BID_SIDE, "25.23", 18)
ask_quote = Quote(MARKET, ASK_SIDE, "26.20", 233)
ask_quote2 = Quote(MARKET, ASK_SIDE, "25.98", 3)
tsq = TwoSidedQuote(bid_quote, ask_quote)
assert tsq.buy_quote() == bid_quote
assert tsq.sell_quote() == ask_quote
tsq.set_sell_quote(ask_quote2)
assert tsq.buy_quote() == bid_quote
assert tsq.sell_quote() == ask_quote2
def test_successful_instantiation_no_cross():
bid_quote = Quote(MARKET, BID_SIDE, "25.23", 18)
ask_quote = Quote(MARKET, ASK_SIDE, "26.20", 233)
tsq = TwoSidedQuote(bid_quote, ask_quote)
assert tsq.buy_quote() == bid_quote
assert tsq.sell_quote() == ask_quote
TwoSidedQuote(bid_quote, ask_quote, False)
TwoSidedQuote(bid_quote, None)
TwoSidedQuote(None, ask_quote)
TwoSidedQuote(None, None)