Add additional test scenarios

tests/conftest.py

@@ -787,6 +787,7 @@ def limit_buy_order():
         'price': 0.00001099,
         'amount': 90.99181073,
         'filled': 90.99181073,
+        'cost': 0.0009999,
         'remaining': 0.0,
         'status': 'closed'
     }

tests/strategy/test_interface.py

@@ -57,9 +57,9 @@ def test_returns_latest_signal(mocker, default_conf, ohlcv_history):
 
 def test_trade_no_dataprovider(default_conf, mocker, caplog):
     strategy = DefaultStrategy({})
-    # Delete DP for sure (suffers from test leakage, as we update this in the base class)
-    if strategy.dp:
-        del strategy.dp
+    # Delete DP for sure (suffers from test leakage, as this is updated in the base class)
+    if strategy.dp is not None:
+        strategy.dp = None
     with pytest.raises(OperationalException, match="DataProvider not found."):
         strategy.get_signal('ETH/BTC', '5m')
 

tests/test_freqtradebot.py

@@ -1070,6 +1070,39 @@ def test_execute_buy(mocker, default_conf, fee, limit_buy_order) -> None:
     assert not freqtrade.execute_buy(pair, stake_amount)
 
 
+def test_execute_buy_confirm_error(mocker, default_conf, fee, limit_buy_order) -> None:
+    freqtrade = get_patched_freqtradebot(mocker, default_conf)
+    mocker.patch.multiple(
+        'freqtrade.freqtradebot.FreqtradeBot',
+        get_buy_rate=MagicMock(return_value=0.11),
+        _get_min_pair_stake_amount=MagicMock(return_value=1)
+    )
+    mocker.patch.multiple(
+        'freqtrade.exchange.Exchange',
+        fetch_ticker=MagicMock(return_value={
+            'bid': 0.00001172,
+            'ask': 0.00001173,
+            'last': 0.00001172
+        }),
+        buy=MagicMock(return_value=limit_buy_order),
+        get_fee=fee,
+    )
+    stake_amount = 2
+    pair = 'ETH/BTC'
+
+    freqtrade.strategy.confirm_trade_entry = MagicMock(side_effect=ValueError)
+    assert freqtrade.execute_buy(pair, stake_amount)
+
+    freqtrade.strategy.confirm_trade_entry = MagicMock(side_effect=Exception)
+    assert freqtrade.execute_buy(pair, stake_amount)
+
+    freqtrade.strategy.confirm_trade_entry = MagicMock(return_value=True)
+    assert freqtrade.execute_buy(pair, stake_amount)
+
+    freqtrade.strategy.confirm_trade_entry = MagicMock(return_value=False)
+    assert not freqtrade.execute_buy(pair, stake_amount)
+
+
 def test_add_stoploss_on_exchange(mocker, default_conf, limit_buy_order) -> None:
     patch_RPCManager(mocker)
     patch_exchange(mocker)