Add test for ask_orderbook validation

tests/exchange/test_exchange.py

@@ -1869,7 +1869,8 @@ def test_get_sell_rate_orderbook_exception(default_conf, mocker, caplog):
     exchange = get_patched_exchange(mocker, default_conf)
     with pytest.raises(PricingError):
         exchange.get_sell_rate(pair, True)
-    assert log_has_re(r"Sell Price at location 1 from orderbook could not be determined\..*", caplog)
+    assert log_has_re(r"Sell Price at location 1 from orderbook could not be determined\..*",
+                      caplog)
 
 
 def test_get_sell_rate_exception(default_conf, mocker, caplog):

tests/test_configuration.py

@@ -935,6 +935,23 @@ def test_validate_protections(default_conf, protconf, expected):
         validate_config_consistency(conf)
 
 
+def test_validate_ask_orderbook(default_conf, caplog) -> None:
+    conf = deepcopy(default_conf)
+    conf['ask_strategy']['use_order_book'] = True
+    conf['ask_strategy']['order_book_min'] = 2
+    conf['ask_strategy']['order_book_max'] = 2
+
+    validate_config_consistency(conf)
+    assert log_has_re(r"DEPRECATED: Please use `order_book_top` instead of.*", caplog)
+    assert conf['ask_strategy']['order_book_top'] == 2
+
+    conf['ask_strategy']['order_book_max'] = 5
+
+    with pytest.raises(OperationalException,
+                       match=r"Using order_book_max != order_book_min in ask_strategy.*"):
+        validate_config_consistency(conf)
+
+
 def test_load_config_test_comments() -> None:
     """
     Load config with comments

tests/test_freqtradebot.py

@@ -4026,7 +4026,8 @@ def test_order_book_ask_strategy(default_conf, limit_buy_order_open, limit_buy_o
                  return_value={'bids': [[]], 'asks': [[]]})
     with pytest.raises(PricingError):
         freqtrade.handle_trade(trade)
-    assert log_has_re(r'Sell Price at location 1 from orderbook could not be determined\..*', caplog)
+    assert log_has_re(r'Sell Price at location 1 from orderbook could not be determined\..*',
+                      caplog)
 
 
 def test_startup_state(default_conf, mocker):