def test__fetch_ticker__exception(self):
backend = ExchangeBackend(ohlcvs={},
timeframe=self.fetch_ohlcv_timeframe,
balances={})
with self.assertRaises(BadSymbol) as e:
backend.fetch_ticker('BTC/USD')
self.assertEqual(str(e.exception),
'ExchangeBackend: no prices for BTC/USD')
def test__fetch_ticker(self):
timeframe = Timeframe(pd_start_date=self.fetch_ohlcv_ohlcvs.index[0],
pd_end_date=self.fetch_ohlcv_ohlcvs.index[-1],
pd_interval=pandas.Timedelta(minutes=0.5))
backend = ExchangeBackend(ohlcvs={'BTC/USD': self.fetch_ohlcv_ohlcvs},
timeframe=timeframe,
balances={})
timeframe.add_timedelta()
timeframe.add_timedelta()
timeframe.add_timedelta()
self.assertEqual(
backend.fetch_ticker('BTC/USD'), {
'symbol': 'BTC/USD',
'timestamp': 1483232520000,
'datetime': '2017-01-01T01:02:00.000Z',
'high': 9.0,
'low': 7.0,
'bid': None,
'bidVolume': None,
'ask': None,
'askVolume': None,
'vwap': None,
'open': 8.0,
'close': 12.0,
'last': None,
'previousClose': None,
'change': None,
'percentage': None,
'average': None,
'baseVolume': None,
'quoteVolume': None,
'info': {}
})