def test_fetch_historical_prices_by_epic_and_numpoints(self, ig_service: IGService):
response = ig_service.fetch_historical_prices_by_epic_and_num_points(
"CS.D.EURUSD.MINI.IP", "H", 4
)
assert isinstance(response["allowance"], dict)
assert isinstance(response["prices"], pd.DataFrame)
assert len(response["prices"]) == 4
def test_historical_prices_by_epic_and_num_points_happy(self):
# fetch_historical_prices_by_epic_and_num_points - daily resolution
with open('tests/data/historic_prices_v2.json', 'r') as file:
response_body = json.loads(file.read())
responses.add(
responses.GET,
'https://demo-api.ig.com/gateway/deal/prices/MT.D.GC.Month2.IP/DAY/10',
match_querystring=False,
headers={
'CST': 'abc123',
'X-SECURITY-TOKEN': 'xyz987'
},
json=response_body,
status=200)
ig_service = IGService('username', 'password', 'api_key', 'DEMO')
result = ig_service.fetch_historical_prices_by_epic_and_num_points(
epic='MT.D.GC.Month2.IP', resolution='D', numpoints=10)
prices = result['prices']
assert isinstance(result, dict)
assert isinstance(prices, pd.DataFrame)
# assert DataFrame shape
assert prices.shape[0] == 10
assert prices.shape[1] == 13
# assert time series rows are 1 day apart
prices['tvalue'] = prices.index
prices['delta'] = (prices['tvalue'] - prices['tvalue'].shift())
assert any(prices["delta"].dropna() == datetime.timedelta(days=1))
def test_historical_prices_by_epic_and_num_points_bad_resolution(self):
# fetch_historical_prices_by_epic_and_num_points, invalid resolution
responses.add(
responses.GET,
'https://demo-api.ig.com/gateway/deal/prices/MT.D.GC.Month2.IP',
match_querystring=False,
headers={
'CST': 'abc123',
'X-SECURITY-TOKEN': 'xyz987'
},
json={},
status=200)
with pytest.raises(ValueError) as excinfo:
ig_service = IGService('username', 'password', 'api_key', 'DEMO')
ig_service.fetch_historical_prices_by_epic_and_num_points(
epic='MT.D.GC.Month2.IP', resolution='X', numpoints=10)
assert "Invalid frequency" in str(excinfo.value)
def test_historical_prices_by_epic_and_num_points_bad_numpoints(self):
# fetch_historical_prices_by_epic_and_num_points, invalid numpoints
responses.add(
responses.GET,
'https://demo-api.ig.com/gateway/deal/prices/MT.D.GC.Month2.IP',
match_querystring=False,
headers={'CST': 'abc123', 'X-SECURITY-TOKEN': 'xyz987'},
json={'errorCode': 'Unable to convert value=3.14159 to type= Integer int'}, # noqa
status=400)
with pytest.raises(Exception):
ig_service = IGService('username', 'password', 'api_key', 'DEMO')
ig_service.crud_session.HEADERS["LOGGED_IN"] = {}
result = ig_service.fetch_historical_prices_by_epic_and_num_points(
epic='MT.D.GC.Month2.IP',
resolution='D',
numpoints=3.14159)
assert result['errorCode'].startswith('Unable to convert value')
