Order Book with tests

freqtrade/tests/conftest.py

@@ -116,6 +116,22 @@ def default_conf():
                 "NEO/BTC"
             ]
         },
+        "experimental": {
+            "check_depth_of_market": {
+                "enabled": False,
+                "bids_to_ask_delta": 1
+            },
+            "bid_strategy": {
+                "percent_from_top": 0,
+                "use_order_book": False,
+                "order_book_top": 1
+            },
+            "ask_strategy": {
+                "use_order_book": False,
+                "order_book_min": 1,
+                "order_book_max": 1
+            }
+        },
         "telegram": {
             "enabled": True,
             "token": "token",

freqtrade/tests/exchange/test_exchange.py

@@ -515,6 +515,16 @@ def test_get_ticker(default_conf, mocker):
     exchange.get_ticker(pair='ETH/BTC', refresh=True)
 
 
+def test_get_order_book(default_conf, mocker):
+    default_conf['exchange']['name'] = 'binance'
+    exchange = Exchange(default_conf)
+    order_book = exchange.get_order_book(pair='ETH/BTC', limit=50)
+    assert 'bids' in order_book
+    assert 'asks' in order_book
+    assert len(order_book['bids']) == 50
+    assert len(order_book['asks']) == 50
+
+
 def make_fetch_ohlcv_mock(data):
     def fetch_ohlcv_mock(pair, timeframe, since):
         if since:

freqtrade/tests/test_freqtradebot.py

@@ -664,21 +664,21 @@ def test_balance_fully_ask_side(mocker, default_conf) -> None:
     default_conf['bid_strategy']['ask_last_balance'] = 0.0
     freqtrade = get_patched_freqtradebot(mocker, default_conf)
 
-    assert freqtrade.get_target_bid({'ask': 20, 'last': 10}) == 20
+    assert freqtrade.get_target_bid('ETH/BTC', {'ask': 20, 'last': 10}) == 20
 
 
 def test_balance_fully_last_side(mocker, default_conf) -> None:
     default_conf['bid_strategy']['ask_last_balance'] = 1.0
     freqtrade = get_patched_freqtradebot(mocker, default_conf)
 
-    assert freqtrade.get_target_bid({'ask': 20, 'last': 10}) == 10
+    assert freqtrade.get_target_bid('ETH/BTC', {'ask': 20, 'last': 10}) == 10
 
 
 def test_balance_bigger_last_ask(mocker, default_conf) -> None:
     default_conf['bid_strategy']['ask_last_balance'] = 1.0
     freqtrade = get_patched_freqtradebot(mocker, default_conf)
 
-    assert freqtrade.get_target_bid({'ask': 5, 'last': 10}) == 5
+    assert freqtrade.get_target_bid('ETH/BTC', {'ask': 5, 'last': 10}) == 5
 
 
 def test_process_maybe_execute_buy(mocker, default_conf) -> None:
@@ -1876,3 +1876,36 @@ def test_get_real_amount_open_trade(default_conf, mocker):
     freqtrade = FreqtradeBot(default_conf)
     patch_get_signal(freqtrade)
     assert freqtrade.get_real_amount(trade, order) == amount
+
+
+def test_order_book_depth_of_market(default_conf, ticker, limit_buy_order, fee, markets, mocker):
+    default_conf['experimental']['check_depth_of_market']['enabled'] = True
+    default_conf['experimental']['check_depth_of_market']['bids_to_ask_delta'] = 0.1
+    patch_RPCManager(mocker)
+    mocker.patch.multiple(
+        'freqtrade.exchange.Exchange',
+        validate_pairs=MagicMock(),
+        get_ticker=ticker,
+        buy=MagicMock(return_value={'id': limit_buy_order['id']}),
+        get_fee=fee,
+        get_markets=markets
+    )
+
+    # Save state of current whitelist
+    whitelist = deepcopy(default_conf['exchange']['pair_whitelist'])
+    freqtrade = FreqtradeBot(default_conf)
+    patch_get_signal(freqtrade)
+    freqtrade.create_trade()
+
+    trade = Trade.query.first()
+    assert trade is not None
+    assert trade.stake_amount == 0.001
+    assert trade.is_open
+    assert trade.open_date is not None
+    assert trade.exchange == 'bittrex'
+
+    # Simulate fulfilled LIMIT_BUY order for trade
+    trade.update(limit_buy_order)
+
+    assert trade.open_rate == 0.00001099
+    assert whitelist == default_conf['exchange']['pair_whitelist']