Add test for Generic behavior

tests/test_integration.py

@@ -6,7 +6,7 @@ from freqtrade.enums import ExitCheckTuple, ExitType
 from freqtrade.persistence import Trade
 from freqtrade.persistence.models import Order
 from freqtrade.rpc.rpc import RPC
-from tests.conftest import get_patched_freqtradebot, patch_get_signal
+from tests.conftest import get_patched_freqtradebot, log_has_re, patch_get_signal
 
 
 def test_may_execute_exit_stoploss_on_exchange_multi(default_conf, ticker, fee,
@@ -455,3 +455,60 @@ def test_dca_order_adjust(default_conf_usdt, ticker_usdt, fee, mocker) -> None:
     # Check the 2 filled orders equal the above amount
     assert pytest.approx(trade.orders[1].amount) == 30.150753768
     assert pytest.approx(trade.orders[-1].amount) == 61.538461232
+
+
+def test_dca_exiting(default_conf_usdt, ticker_usdt, fee, mocker, caplog) -> None:
+    default_conf_usdt['position_adjustment_enable'] = True
+
+    freqtrade = get_patched_freqtradebot(mocker, default_conf_usdt)
+    mocker.patch.multiple(
+        'freqtrade.exchange.Exchange',
+        fetch_ticker=ticker_usdt,
+        get_fee=fee,
+        amount_to_precision=lambda s, x, y: y,
+        price_to_precision=lambda s, x, y: y,
+        get_min_pair_stake_amount=MagicMock(return_value=10),
+    )
+
+    patch_get_signal(freqtrade)
+    freqtrade.enter_positions()
+
+    assert len(Trade.get_trades().all()) == 1
+    trade = Trade.get_trades().first()
+    assert len(trade.orders) == 1
+    assert pytest.approx(trade.stake_amount) == 60
+    assert pytest.approx(trade.amount) == 30.0
+    assert trade.open_rate == 2.0
+
+    # Too small size
+    freqtrade.strategy.adjust_trade_position = MagicMock(return_value=-59)
+    freqtrade.process()
+    trade = Trade.get_trades().first()
+    assert len(trade.orders) == 1
+    assert pytest.approx(trade.stake_amount) == 60
+    assert pytest.approx(trade.amount) == 30.0
+    assert log_has_re("Remaining amount of 1.6.* would be too small.", caplog)
+
+    freqtrade.strategy.adjust_trade_position = MagicMock(return_value=-20)
+
+    freqtrade.process()
+    trade = Trade.get_trades().first()
+    assert len(trade.orders) == 2
+    assert trade.orders[-1].ft_order_side == 'sell'
+    assert pytest.approx(trade.stake_amount) == 40.198
+    assert pytest.approx(trade.amount) == 20.099
+    assert trade.open_rate == 2.0
+    assert trade.is_open
+    caplog.clear()
+
+    # Sell more than what we got (we got ~20 coins left)
+    # First adjusts the amount to 20 - then rejects.
+    freqtrade.strategy.adjust_trade_position = MagicMock(return_value=-50)
+    freqtrade.process()
+    assert log_has_re("Adjusting amount to trade.amount as it is higher.*", caplog)
+    assert log_has_re("Remaining amount of 0.0 would be too small.", caplog)
+    trade = Trade.get_trades().first()
+    assert len(trade.orders) == 2
+    assert trade.orders[-1].ft_order_side == 'sell'
+    assert pytest.approx(trade.stake_amount) == 40.198
+    assert trade.is_open