Enhance tests to cover precision_filter correctly

tests/conftest.py

@@ -572,6 +572,44 @@ def get_markets():
     }
 
 
+@pytest.fixture
+def shitcoinmarkets(markets):
+    """
+    Fixture with shitcoin markets - used to test filters in pairlists
+    """
+    shitmarkets = deepcopy(markets)
+    shitmarkets.update({'HOT/BTC': {
+            'id': 'HOTBTC',
+            'symbol': 'HOT/BTC',
+            'base': 'HOT',
+            'quote': 'BTC',
+            'active': True,
+            'precision': {
+                'base': 8,
+                'quote': 8,
+                'amount': 0,
+                'price': 8
+            },
+            'limits': {
+                'amount': {
+                    'min': 1.0,
+                    'max': 90000000.0
+                },
+                'price': {
+                    'min': None,
+                    'max': None
+                },
+                'cost': {
+                    'min': 0.001,
+                    'max': None
+                }
+            },
+            'info': {},
+        },
+        })
+    return shitmarkets
+
+
 @pytest.fixture
 def markets_empty():
     return MagicMock(return_value=[])
@@ -866,6 +904,28 @@ def tickers():
             'quoteVolume': 1215.14489611,
             'info': {}
         },
+        'HOT/BTC': {
+            'symbol': 'HOT/BTC',
+            'timestamp': 1572273518661,
+            'datetime': '2019-10-28T14:38:38.661Z',
+            'high': 0.00000011,
+            'low': 0.00000009,
+            'bid': 0.0000001,
+            'bidVolume': 1476027288.0,
+            'ask': 0.00000011,
+            'askVolume': 820153831.0,
+            'vwap': 0.0000001,
+            'open': 0.00000009,
+            'close': 0.00000011,
+            'last': 0.00000011,
+            'previousClose': 0.00000009,
+            'change': 0.00000002,
+            'percentage': 22.222,
+            'average': None,
+            'baseVolume': 1442290324.0,
+            'quoteVolume': 143.78311994,
+            'info': {}
+        },
         'ETH/USDT': {
             'symbol': 'ETH/USDT',
             'timestamp': 1522014804118,