# pragma pylint: disable=missing-docstring,W0212,C0103 import os from copy import deepcopy from unittest.mock import MagicMock from freqtrade.optimize.hyperopt import Hyperopt import freqtrade.tests.conftest as tt # test tools # Avoid to reinit the same object again and again _HYPEROPT = Hyperopt(tt.default_conf()) # Functions for recurrent object patching def create_trials(mocker) -> None: """ When creating trials, mock the hyperopt Trials so that *by default* - we don't create any pickle'd files in the filesystem - we might have a pickle'd file so make sure that we return false when looking for it """ _HYPEROPT.trials_file = os.path.join('freqtrade', 'tests', 'optimize', 'ut_trials.pickle') mocker.patch('freqtrade.optimize.hyperopt.os.path.exists', return_value=False) mocker.patch('freqtrade.optimize.hyperopt.os.remove', return_value=True) mocker.patch('freqtrade.optimize.hyperopt.pickle.dump', return_value=None) return mocker.Mock( results=[ { 'loss': 1, 'result': 'foo', 'status': 'ok' } ], best_trial={'misc': {'vals': {'adx': 999}}} ) # Unit tests def test_loss_calculation_prefer_correct_trade_count() -> None: """ Test Hyperopt.calculate_loss() """ hyperopt = _HYPEROPT correct = hyperopt.calculate_loss(1, hyperopt.target_trades, 20) over = hyperopt.calculate_loss(1, hyperopt.target_trades + 100, 20) under = hyperopt.calculate_loss(1, hyperopt.target_trades - 100, 20) assert over > correct assert under > correct def test_loss_calculation_prefer_shorter_trades() -> None: """ Test Hyperopt.calculate_loss() """ hyperopt = _HYPEROPT shorter = hyperopt.calculate_loss(1, 100, 20) longer = hyperopt.calculate_loss(1, 100, 30) assert shorter < longer def test_loss_calculation_has_limited_profit() -> None: hyperopt = _HYPEROPT correct = hyperopt.calculate_loss(hyperopt.expected_max_profit, hyperopt.target_trades, 20) over = hyperopt.calculate_loss(hyperopt.expected_max_profit * 2, hyperopt.target_trades, 20) under = hyperopt.calculate_loss(hyperopt.expected_max_profit / 2, hyperopt.target_trades, 20) assert over == correct assert under > correct def test_log_results_if_loss_improves(caplog) -> None: hyperopt = _HYPEROPT hyperopt.current_best_loss = 2 hyperopt.log_results( { 'loss': 1, 'current_tries': 1, 'total_tries': 2, 'result': 'foo' } ) assert tt.log_has(' 1/2: foo. Loss 1.00000', caplog.record_tuples) def test_no_log_if_loss_does_not_improve(caplog) -> None: hyperopt = _HYPEROPT hyperopt.current_best_loss = 2 hyperopt.log_results( { 'loss': 3, } ) assert caplog.record_tuples == [] def test_fmin_best_results(mocker, default_conf, caplog) -> None: fmin_result = { "macd_below_zero": 0, "adx": 1, "adx-value": 15.0, "fastd": 1, "fastd-value": 40.0, "green_candle": 1, "mfi": 0, "over_sar": 0, "rsi": 1, "rsi-value": 37.0, "trigger": 2, "uptrend_long_ema": 1, "uptrend_short_ema": 0, "uptrend_sma": 0, "stoploss": -0.1, "roi_t1": 1, "roi_t2": 2, "roi_t3": 3, "roi_p1": 1, "roi_p2": 2, "roi_p3": 3, } conf = deepcopy(default_conf) conf.update({'config': 'config.json.example'}) conf.update({'epochs': 1}) conf.update({'timerange': None}) mocker.patch('freqtrade.optimize.hyperopt.load_data', MagicMock()) mocker.patch('freqtrade.optimize.hyperopt.fmin', return_value=fmin_result) mocker.patch('freqtrade.optimize.hyperopt.hyperopt_optimize_conf', return_value=conf) mocker.patch('freqtrade.logger.Logger.set_format', MagicMock()) hyperopt = Hyperopt(conf) hyperopt.trials = create_trials(mocker) hyperopt.tickerdata_to_dataframe = MagicMock() hyperopt.start() exists = [ 'Best parameters:', '"adx": {\n "enabled": true,\n "value": 15.0\n },', '"fastd": {\n "enabled": true,\n "value": 40.0\n },', '"green_candle": {\n "enabled": true\n },', '"macd_below_zero": {\n "enabled": false\n },', '"mfi": {\n "enabled": false\n },', '"over_sar": {\n "enabled": false\n },', '"roi_p1": 1.0,', '"roi_p2": 2.0,', '"roi_p3": 3.0,', '"roi_t1": 1.0,', '"roi_t2": 2.0,', '"roi_t3": 3.0,', '"rsi": {\n "enabled": true,\n "value": 37.0\n },', '"stoploss": -0.1,', '"trigger": {\n "type": "faststoch10"\n },', '"uptrend_long_ema": {\n "enabled": true\n },', '"uptrend_short_ema": {\n "enabled": false\n },', '"uptrend_sma": {\n "enabled": false\n }', 'ROI table:\n{\'0\': 6.0, \'3.0\': 3.0, \'5.0\': 1.0, \'6.0\': 0}', 'Best Result:\nfoo' ] for line in exists: assert line in caplog.text def test_fmin_throw_value_error(mocker, default_conf, caplog) -> None: mocker.patch('freqtrade.optimize.hyperopt.load_data', MagicMock()) mocker.patch('freqtrade.optimize.hyperopt.fmin', side_effect=ValueError()) conf = deepcopy(default_conf) conf.update({'config': 'config.json.example'}) conf.update({'epochs': 1}) conf.update({'timerange': None}) mocker.patch('freqtrade.optimize.hyperopt.hyperopt_optimize_conf', return_value=conf) mocker.patch('freqtrade.logger.Logger.set_format', MagicMock()) hyperopt = Hyperopt(conf) hyperopt.trials = create_trials(mocker) hyperopt.tickerdata_to_dataframe = MagicMock() hyperopt.start() exists = [ 'Best Result:', 'Sorry, Hyperopt was not able to find good parameters. Please try with more epochs ' '(param: -e).', ] for line in exists: assert line in caplog.text def test_resuming_previous_hyperopt_results_succeeds(mocker, default_conf) -> None: trials = create_trials(mocker) conf = deepcopy(default_conf) conf.update({'config': 'config.json.example'}) conf.update({'epochs': 1}) conf.update({'mongodb': False}) conf.update({'timerange': None}) mocker.patch('freqtrade.optimize.hyperopt.os.path.exists', return_value=True) mocker.patch('freqtrade.optimize.hyperopt.len', return_value=len(trials.results)) mock_read = mocker.patch( 'freqtrade.optimize.hyperopt.Hyperopt.read_trials', return_value=trials ) mock_save = mocker.patch( 'freqtrade.optimize.hyperopt.Hyperopt.save_trials', return_value=None ) mocker.patch('freqtrade.optimize.hyperopt.sorted', return_value=trials.results) mocker.patch('freqtrade.optimize.hyperopt.load_data', MagicMock()) mocker.patch('freqtrade.optimize.hyperopt.fmin', return_value={}) mocker.patch('freqtrade.optimize.hyperopt.hyperopt_optimize_conf', return_value=conf) mocker.patch('freqtrade.logger.Logger.set_format', MagicMock()) hyperopt = Hyperopt(conf) hyperopt.trials = trials hyperopt.tickerdata_to_dataframe = MagicMock() hyperopt.start() mock_read.assert_called_once() mock_save.assert_called_once() current_tries = hyperopt.current_tries total_tries = hyperopt.total_tries assert current_tries == len(trials.results) assert total_tries == (current_tries + len(trials.results)) def test_save_trials_saves_trials(mocker, caplog) -> None: create_trials(mocker) mock_dump = mocker.patch('freqtrade.optimize.hyperopt.pickle.dump', return_value=None) hyperopt = _HYPEROPT mocker.patch('freqtrade.optimize.hyperopt.open', return_value=hyperopt.trials_file) hyperopt.save_trials() assert tt.log_has( 'Saving Trials to \'freqtrade/tests/optimize/ut_trials.pickle\'', caplog.record_tuples ) mock_dump.assert_called_once() def test_read_trials_returns_trials_file(mocker, default_conf, caplog) -> None: trials = create_trials(mocker) mock_load = mocker.patch('freqtrade.optimize.hyperopt.pickle.load', return_value=trials) mock_open = mocker.patch('freqtrade.optimize.hyperopt.open', return_value=mock_load) hyperopt = _HYPEROPT hyperopt_trial = hyperopt.read_trials() assert tt.log_has( 'Reading Trials from \'freqtrade/tests/optimize/ut_trials.pickle\'', caplog.record_tuples ) assert hyperopt_trial == trials mock_open.assert_called_once() mock_load.assert_called_once() def test_roi_table_generation() -> None: params = { 'roi_t1': 5, 'roi_t2': 10, 'roi_t3': 15, 'roi_p1': 1, 'roi_p2': 2, 'roi_p3': 3, } hyperopt = _HYPEROPT assert hyperopt.generate_roi_table(params) == {'0': 6, '15': 3, '25': 1, '30': 0} def test_start_calls_fmin(mocker, default_conf) -> None: trials = create_trials(mocker) mocker.patch('freqtrade.optimize.hyperopt.sorted', return_value=trials.results) mocker.patch('freqtrade.optimize.hyperopt.load_data', MagicMock()) mock_fmin = mocker.patch('freqtrade.optimize.hyperopt.fmin', return_value={}) conf = deepcopy(default_conf) conf.update({'config': 'config.json.example'}) conf.update({'epochs': 1}) conf.update({'mongodb': False}) conf.update({'timerange': None}) hyperopt = Hyperopt(conf) hyperopt.trials = trials hyperopt.tickerdata_to_dataframe = MagicMock() hyperopt.start() mock_fmin.assert_called_once() def test_start_uses_mongotrials(mocker, default_conf) -> None: mocker.patch('freqtrade.optimize.hyperopt.load_data', MagicMock()) mock_fmin = mocker.patch('freqtrade.optimize.hyperopt.fmin', return_value={}) mock_mongotrials = mocker.patch( 'freqtrade.optimize.hyperopt.MongoTrials', return_value=create_trials(mocker) ) conf = deepcopy(default_conf) conf.update({'config': 'config.json.example'}) conf.update({'epochs': 1}) conf.update({'mongodb': True}) conf.update({'timerange': None}) mocker.patch('freqtrade.optimize.hyperopt.hyperopt_optimize_conf', return_value=conf) hyperopt = Hyperopt(conf) hyperopt.tickerdata_to_dataframe = MagicMock() hyperopt.start() mock_mongotrials.assert_called_once() mock_fmin.assert_called_once()