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import pytest
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from freqtrade.exceptions import StrategyError
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from freqtrade.persistence import Trade
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from freqtrade.strategy.strategy_wrapper import strategy_safe_wrapper
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from tests.conftest import create_mock_trades, log_has_re
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@pytest.mark.parametrize(
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"error",
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[
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ValueError,
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KeyError,
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Exception,
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],
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)
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def test_strategy_safe_wrapper_error(caplog, error):
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def failing_method():
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raise error("This is an error.")
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with pytest.raises(StrategyError, match=r"This is an error."):
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strategy_safe_wrapper(failing_method, message="DeadBeef")()
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assert log_has_re(r"DeadBeef.*", caplog)
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ret = strategy_safe_wrapper(failing_method, message="DeadBeef", default_retval=True)()
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assert isinstance(ret, bool)
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assert ret
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caplog.clear()
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# Test suppressing error
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ret = strategy_safe_wrapper(failing_method, message="DeadBeef", supress_error=True)()
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assert log_has_re(r"DeadBeef.*", caplog)
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@pytest.mark.parametrize(
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"value", [1, 22, 55, True, False, {"a": 1, "b": "112"}, [1, 2, 3, 4], (4, 2, 3, 6)]
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)
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def test_strategy_safe_wrapper(value):
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def working_method(argumentpassedin):
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return argumentpassedin
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ret = strategy_safe_wrapper(working_method, message="DeadBeef")(value)
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assert isinstance(ret, type(value))
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assert ret == value
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@pytest.mark.usefixtures("init_persistence")
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def test_strategy_safe_wrapper_trade_copy(fee):
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create_mock_trades(fee)
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def working_method(trade):
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assert len(trade.orders) > 0
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assert trade.orders
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trade.orders = []
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assert len(trade.orders) == 0
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return trade
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trade = Trade.get_open_trades()[0]
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# Don't assert anything before strategy_wrapper.
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# This ensures that relationship loading works correctly.
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ret = strategy_safe_wrapper(working_method, message="DeadBeef")(trade=trade)
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assert isinstance(ret, Trade)
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assert id(trade) != id(ret)
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# Did not modify the original order
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assert len(trade.orders) > 0
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assert len(ret.orders) == 0
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