stable/freqtrade/tests/test_fiat_convert.py
Gerald Lonlas 28b1ecb109 Convert CryptoToFiatConverter into a Singleton
Result in a speed up of the unittest from 60s to 4s

Because it cost time to load Pymarketcap() every time we create
a CryptoToFiatConverter, it worth it to change it into a
Singleton.
2018-01-21 16:41:59 -08:00

126 lines
4.8 KiB
Python

# pragma pylint: disable=missing-docstring, too-many-arguments, too-many-ancestors, C0103
import time
from unittest.mock import MagicMock
import pytest
from freqtrade.fiat_convert import CryptoFiat, CryptoToFiatConverter
def test_pair_convertion_object():
pair_convertion = CryptoFiat(
crypto_symbol='btc',
fiat_symbol='usd',
price=12345.0
)
# Check the cache duration is 6 hours
assert pair_convertion.CACHE_DURATION == 6 * 60 * 60
# Check a regular usage
assert pair_convertion.crypto_symbol == 'BTC'
assert pair_convertion.fiat_symbol == 'USD'
assert pair_convertion.price == 12345.0
assert pair_convertion.is_expired() is False
# Update the expiration time (- 2 hours) and check the behavior
pair_convertion._expiration = time.time() - 2 * 60 * 60
assert pair_convertion.is_expired() is True
# Check set price behaviour
time_reference = time.time() + pair_convertion.CACHE_DURATION
pair_convertion.set_price(price=30000.123)
assert pair_convertion.is_expired() is False
assert pair_convertion._expiration >= time_reference
assert pair_convertion.price == 30000.123
def test_fiat_convert_is_supported():
fiat_convert = CryptoToFiatConverter()
assert fiat_convert._is_supported_fiat(fiat='USD') is True
assert fiat_convert._is_supported_fiat(fiat='usd') is True
assert fiat_convert._is_supported_fiat(fiat='abc') is False
assert fiat_convert._is_supported_fiat(fiat='ABC') is False
def test_fiat_convert_add_pair():
fiat_convert = CryptoToFiatConverter()
assert len(fiat_convert._pairs) == 0
fiat_convert._add_pair(crypto_symbol='btc', fiat_symbol='usd', price=12345.0)
assert len(fiat_convert._pairs) == 1
assert fiat_convert._pairs[0].crypto_symbol == 'BTC'
assert fiat_convert._pairs[0].fiat_symbol == 'USD'
assert fiat_convert._pairs[0].price == 12345.0
fiat_convert._add_pair(crypto_symbol='btc', fiat_symbol='Eur', price=13000.2)
assert len(fiat_convert._pairs) == 2
assert fiat_convert._pairs[1].crypto_symbol == 'BTC'
assert fiat_convert._pairs[1].fiat_symbol == 'EUR'
assert fiat_convert._pairs[1].price == 13000.2
def test_fiat_convert_find_price(mocker):
api_mock = MagicMock(return_value={
'price_usd': 12345.0,
'price_eur': 13000.2
})
mocker.patch('freqtrade.fiat_convert.Pymarketcap.ticker', api_mock)
fiat_convert = CryptoToFiatConverter()
with pytest.raises(ValueError, match=r'The fiat ABC is not supported.'):
fiat_convert._find_price(crypto_symbol='BTC', fiat_symbol='ABC')
mocker.patch('freqtrade.fiat_convert.CryptoToFiatConverter._find_price', return_value=12345.0)
assert fiat_convert.get_price(crypto_symbol='BTC', fiat_symbol='USD') == 12345.0
assert fiat_convert.get_price(crypto_symbol='btc', fiat_symbol='usd') == 12345.0
mocker.patch('freqtrade.fiat_convert.CryptoToFiatConverter._find_price', return_value=13000.2)
assert fiat_convert.get_price(crypto_symbol='BTC', fiat_symbol='EUR') == 13000.2
def test_fiat_convert_get_price(mocker):
api_mock = MagicMock(return_value={
'price_usd': 28000.0,
'price_eur': 15000.0
})
mocker.patch('freqtrade.fiat_convert.Pymarketcap.ticker', api_mock)
mocker.patch('freqtrade.fiat_convert.CryptoToFiatConverter._find_price', return_value=28000.0)
fiat_convert = CryptoToFiatConverter()
with pytest.raises(ValueError, match=r'The fiat US DOLLAR is not supported.'):
fiat_convert.get_price(crypto_symbol='BTC', fiat_symbol='US Dollar')
# Check the value return by the method
assert len(fiat_convert._pairs) == 0
assert fiat_convert.get_price(crypto_symbol='BTC', fiat_symbol='USD') == 28000.0
assert fiat_convert._pairs[0].crypto_symbol == 'BTC'
assert fiat_convert._pairs[0].fiat_symbol == 'USD'
assert fiat_convert._pairs[0].price == 28000.0
assert fiat_convert._pairs[0]._expiration is not 0
assert len(fiat_convert._pairs) == 1
# Verify the cached is used
fiat_convert._pairs[0].price = 9867.543
expiration = fiat_convert._pairs[0]._expiration
assert fiat_convert.get_price(crypto_symbol='BTC', fiat_symbol='USD') == 9867.543
assert fiat_convert._pairs[0]._expiration == expiration
# Verify the cache expiration
expiration = time.time() - 2 * 60 * 60
fiat_convert._pairs[0]._expiration = expiration
assert fiat_convert.get_price(crypto_symbol='BTC', fiat_symbol='USD') == 28000.0
assert fiat_convert._pairs[0]._expiration is not expiration
def test_fiat_convert_without_network():
# Because CryptoToFiatConverter is a Singleton we reset the value of _coinmarketcap
CryptoToFiatConverter._coinmarketcap = None
fiat_convert = CryptoToFiatConverter()
assert fiat_convert._coinmarketcap is None
assert fiat_convert._find_price(crypto_symbol='BTC', fiat_symbol='USD') == 0.0