225 lines
9.4 KiB
Python
225 lines
9.4 KiB
Python
from math import isclose
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import numpy as np
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import pandas as pd
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import pytest
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from freqtrade.data.dataprovider import DataProvider
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from freqtrade.enums import CandleType
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from freqtrade.strategy import (merge_informative_pair, stoploss_from_absolute, stoploss_from_open,
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timeframe_to_minutes)
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from tests.conftest import get_patched_exchange
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def generate_test_data(timeframe: str, size: int, start: str = '2020-07-05'):
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np.random.seed(42)
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tf_mins = timeframe_to_minutes(timeframe)
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base = np.random.normal(20, 2, size=size)
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date = pd.date_range(start, periods=size, freq=f'{tf_mins}min', tz='UTC')
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df = pd.DataFrame({
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'date': date,
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'open': base,
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'high': base + np.random.normal(2, 1, size=size),
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'low': base - np.random.normal(2, 1, size=size),
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'close': base + np.random.normal(0, 1, size=size),
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'volume': np.random.normal(200, size=size)
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}
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)
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df = df.dropna()
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return df
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def test_merge_informative_pair():
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data = generate_test_data('15m', 40)
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informative = generate_test_data('1h', 40)
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result = merge_informative_pair(data, informative, '15m', '1h', ffill=True)
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assert isinstance(result, pd.DataFrame)
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assert len(result) == len(data)
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assert 'date' in result.columns
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assert result['date'].equals(data['date'])
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assert 'date_1h' in result.columns
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assert 'open' in result.columns
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assert 'open_1h' in result.columns
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assert result['open'].equals(data['open'])
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assert 'close' in result.columns
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assert 'close_1h' in result.columns
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assert result['close'].equals(data['close'])
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assert 'volume' in result.columns
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assert 'volume_1h' in result.columns
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assert result['volume'].equals(data['volume'])
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# First 3 rows are empty
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assert result.iloc[0]['date_1h'] is pd.NaT
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assert result.iloc[1]['date_1h'] is pd.NaT
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assert result.iloc[2]['date_1h'] is pd.NaT
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# Next 4 rows contain the starting date (0:00)
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assert result.iloc[3]['date_1h'] == result.iloc[0]['date']
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assert result.iloc[4]['date_1h'] == result.iloc[0]['date']
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assert result.iloc[5]['date_1h'] == result.iloc[0]['date']
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assert result.iloc[6]['date_1h'] == result.iloc[0]['date']
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# Next 4 rows contain the next Hourly date original date row 4
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assert result.iloc[7]['date_1h'] == result.iloc[4]['date']
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assert result.iloc[8]['date_1h'] == result.iloc[4]['date']
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def test_merge_informative_pair_same():
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data = generate_test_data('15m', 40)
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informative = generate_test_data('15m', 40)
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result = merge_informative_pair(data, informative, '15m', '15m', ffill=True)
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assert isinstance(result, pd.DataFrame)
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assert len(result) == len(data)
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assert 'date' in result.columns
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assert result['date'].equals(data['date'])
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assert 'date_15m' in result.columns
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assert 'open' in result.columns
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assert 'open_15m' in result.columns
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assert result['open'].equals(data['open'])
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assert 'close' in result.columns
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assert 'close_15m' in result.columns
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assert result['close'].equals(data['close'])
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assert 'volume' in result.columns
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assert 'volume_15m' in result.columns
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assert result['volume'].equals(data['volume'])
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# Dates match 1:1
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assert result['date_15m'].equals(result['date'])
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def test_merge_informative_pair_lower():
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data = generate_test_data('1h', 40)
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informative = generate_test_data('15m', 40)
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with pytest.raises(ValueError, match=r"Tried to merge a faster timeframe .*"):
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merge_informative_pair(data, informative, '1h', '15m', ffill=True)
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def test_stoploss_from_open():
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open_price_ranges = [
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[0.01, 1.00, 30],
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[1, 100, 30],
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[100, 10000, 30],
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]
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# profit range for long is [-1, inf] while for shorts is [-inf, 1]
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current_profit_range_dict = {'long': [-0.99, 2, 30], 'short': [-2.0, 0.99, 30]}
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desired_stop_range = [-0.50, 0.50, 30]
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for side, current_profit_range in current_profit_range_dict.items():
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for open_range in open_price_ranges:
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for open_price in np.linspace(*open_range):
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for desired_stop in np.linspace(*desired_stop_range):
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if side == 'long':
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# -1 is not a valid current_profit, should return 1
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assert stoploss_from_open(desired_stop, -1) == 1
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else:
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# 1 is not a valid current_profit for shorts, should return 1
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assert stoploss_from_open(desired_stop, 1, True) == 1
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for current_profit in np.linspace(*current_profit_range):
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if side == 'long':
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current_price = open_price * (1 + current_profit)
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expected_stop_price = open_price * (1 + desired_stop)
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stoploss = stoploss_from_open(desired_stop, current_profit)
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stop_price = current_price * (1 - stoploss)
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else:
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current_price = open_price * (1 - current_profit)
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expected_stop_price = open_price * (1 - desired_stop)
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stoploss = stoploss_from_open(desired_stop, current_profit, True)
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stop_price = current_price * (1 + stoploss)
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assert stoploss >= 0
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# Technically the formula can yield values greater than 1 for shorts
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# eventhough it doesn't make sense because the position would be liquidated
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if side == 'long':
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assert stoploss <= 1
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# there is no correct answer if the expected stop price is above
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# the current price
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if ((side == 'long' and expected_stop_price > current_price)
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or (side == 'short' and expected_stop_price < current_price)):
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assert stoploss == 0
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else:
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assert isclose(stop_price, expected_stop_price, rel_tol=0.00001)
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def test_stoploss_from_absolute():
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assert stoploss_from_absolute(90, 100) == 1 - (90 / 100)
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assert stoploss_from_absolute(100, 100) == 0
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assert stoploss_from_absolute(110, 100) == 0
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assert stoploss_from_absolute(100, 0) == 1
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assert stoploss_from_absolute(0, 100) == 1
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# TODO-lev: @pytest.mark.parametrize('candle_type', ['mark', ''])
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def test_informative_decorator(mocker, default_conf):
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test_data_5m = generate_test_data('5m', 40)
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test_data_30m = generate_test_data('30m', 40)
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test_data_1h = generate_test_data('1h', 40)
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data = {
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('XRP/USDT', '5m', CandleType.SPOT): test_data_5m,
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('XRP/USDT', '30m', CandleType.SPOT): test_data_30m,
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('XRP/USDT', '1h', CandleType.SPOT): test_data_1h,
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('LTC/USDT', '5m', CandleType.SPOT): test_data_5m,
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('LTC/USDT', '30m', CandleType.SPOT): test_data_30m,
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('LTC/USDT', '1h', CandleType.SPOT): test_data_1h,
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('NEO/USDT', '30m', CandleType.SPOT): test_data_30m,
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('NEO/USDT', '5m', CandleType.SPOT): test_data_5m,
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('NEO/USDT', '1h', CandleType.SPOT): test_data_1h,
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('ETH/USDT', '1h', CandleType.SPOT): test_data_1h,
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('ETH/USDT', '30m', CandleType.SPOT): test_data_30m,
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('ETH/BTC', '1h', CandleType.SPOT): test_data_1h,
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}
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from .strats.informative_decorator_strategy import InformativeDecoratorTest
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default_conf['stake_currency'] = 'USDT'
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strategy = InformativeDecoratorTest(config=default_conf)
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exchange = get_patched_exchange(mocker, default_conf)
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strategy.dp = DataProvider({}, exchange, None)
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mocker.patch.object(strategy.dp, 'current_whitelist', return_value=[
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'XRP/USDT', 'LTC/USDT', 'NEO/USDT'
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])
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assert len(strategy._ft_informative) == 6 # Equal to number of decorators used
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informative_pairs = [
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('XRP/USDT', '1h', CandleType.SPOT),
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('LTC/USDT', '1h', CandleType.SPOT),
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('XRP/USDT', '30m', CandleType.SPOT),
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('LTC/USDT', '30m', CandleType.SPOT),
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('NEO/USDT', '1h', CandleType.SPOT),
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('NEO/USDT', '30m', CandleType.SPOT),
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('NEO/USDT', '5m', CandleType.SPOT),
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('ETH/BTC', '1h', CandleType.SPOT),
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('ETH/USDT', '30m', CandleType.SPOT)]
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for inf_pair in informative_pairs:
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assert inf_pair in strategy.gather_informative_pairs()
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def test_historic_ohlcv(pair, timeframe, candle_type):
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return data[
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(pair, timeframe or strategy.timeframe, CandleType.from_string(candle_type))].copy()
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mocker.patch('freqtrade.data.dataprovider.DataProvider.historic_ohlcv',
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side_effect=test_historic_ohlcv)
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analyzed = strategy.advise_all_indicators(
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{p: data[(p, strategy.timeframe, CandleType.SPOT)] for p in ('XRP/USDT', 'LTC/USDT')})
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expected_columns = [
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'rsi_1h', 'rsi_30m', # Stacked informative decorators
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'neo_usdt_rsi_1h', # NEO 1h informative
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'rsi_NEO_USDT_neo_usdt_NEO/USDT_30m', # Column formatting
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'rsi_from_callable', # Custom column formatter
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'eth_btc_rsi_1h', # Quote currency not matching stake currency
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'rsi', 'rsi_less', # Non-informative columns
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'rsi_5m', # Manual informative dataframe
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]
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for _, dataframe in analyzed.items():
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for col in expected_columns:
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assert col in dataframe.columns
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