from binance.depthcache import DepthCache

import pytest

TEST_SYMBOL = "BNBBTC"

@pytest.fixture

def fresh_cache():

return DepthCache(TEST_SYMBOL)

def test_add_bids(fresh_cache):

"""Verify basic functionality for adding a bid to the cache"""

high_bid = [0.111, 489]

mid_bid = [0.018, 300]

low_bid = [0.001, 100]

for bid in [high_bid, low_bid, mid_bid]:

fresh_cache.add_bid(bid)

bids = fresh_cache.get_bids()

assert len(bids) == 3

assert bids == sorted(bids, reverse=True)

def test_add_asks(fresh_cache):

"""Verify basic functionality for adding an ask to the cache"""

high_ask = [0.111, 489]

mid_ask = [0.018, 300]

low_ask = [0.001, 100]

for ask in [high_ask, low_ask, mid_ask]:

fresh_cache.add_ask(ask)

asks = fresh_cache.get_asks()

# Three asks should be in the cache

assert len(asks) == 3

# Lowest ask price should be first (ascending order)

assert asks == sorted(asks)