Check if exchang provides bid/ask via fetch_tickers - and fail with spread filter if it doesn't.

closes #8286

tests/plugins/test_pairlist.py

@@ -828,6 +828,12 @@ def test_pair_whitelist_not_supported_Spread(mocker, default_conf, tickers) -> N
                        match=r'Exchange does not support fetchTickers, .*'):
         get_patched_freqtradebot(mocker, default_conf)
 
+    mocker.patch(f'{EXMS}.exchange_has', MagicMock(return_value=True))
+    mocker.patch(f'{EXMS}.get_option', MagicMock(return_value=False))
+    with pytest.raises(OperationalException,
+                       match=r'.*requires exchange to have bid/ask data'):
+        get_patched_freqtradebot(mocker, default_conf)
+
 
 @pytest.mark.parametrize("pairlist", TESTABLE_PAIRLISTS)
 def test_pairlist_class(mocker, whitelist_conf, markets, pairlist):