Use realistic threshold for "get_fee" test

tests/exchange/test_ccxt_compat.py

@@ -142,8 +142,8 @@ class TestCCXTExchange():
     def test_ccxt_get_fee(self, exchange):
         exchange, exchangename = exchange
         pair = EXCHANGES[exchangename]['pair']
-
-        assert 0 < exchange.get_fee(pair, 'limit', 'buy') < 1
-        assert 0 < exchange.get_fee(pair, 'limit', 'sell') < 1
-        assert 0 < exchange.get_fee(pair, 'market', 'buy') < 1
-        assert 0 < exchange.get_fee(pair, 'market', 'sell') < 1
+        threshold = 0.01
+        assert 0 < exchange.get_fee(pair, 'limit', 'buy') < threshold
+        assert 0 < exchange.get_fee(pair, 'limit', 'sell') < threshold
+        assert 0 < exchange.get_fee(pair, 'market', 'buy') < threshold
+        assert 0 < exchange.get_fee(pair, 'market', 'sell') < threshold