from freqtrade.tests.conftest import log_has, get_patched_exchange
from freqtrade.edge import Edge


# Cases to be tested:
# 1) Three complete trades within dataframe (with sell or buy hit for all)
# 2) Two open trades but one without sell/buy hit
# 3) Two complete trades and one which should not be considered as it happend while
#    there was an already open trade on pair
# 4) Three complete trades with buy=1 on the last frame
# 5) Candle drops 8%, stoploss at 1%: Trade closed, 1% loss
# 6) Candle drops 4% but recovers to 1% loss, stoploss at 3%: Trade closed, 3% loss
# 7) Candle drops 4% recovers to 1% entry criteria are met candle drops
#    20%, stoploss at 2%: Trade 1 closed, Loss 2%, Trade 2 opened, Trade 2 closed, Loss 2%


def test_filter(mocker, default_conf):
    exchange = get_patched_exchange(mocker, default_conf)
    edge = Edge(default_conf, exchange)
    mocker.patch('freqtrade.edge.Edge._cached_pairs', mocker.PropertyMock(
        return_value=[
            ['E/F', -0.01, 0.66, 3.71, 0.50, 1.71],
            ['C/D', -0.01, 0.66, 3.71, 0.50, 1.71],
            ['N/O', -0.01, 0.66, 3.71, 0.50, 1.71]
        ]
    ))

    pairs = ['A/B', 'C/D', 'E/F', 'G/H']
    assert(edge.filter(pairs) == ['E/F', 'C/D'])