mirror of
https://github.com/wassname/catalyst.git
synced 2026-07-01 11:42:09 +08:00
Eddie Hebert
bc4c6fb245
Also, add direct coverage of last_traded_dt in the `test_data_portal` module. Prepares for adding test coverage of `get_last_traded_dt` for `Future` assets.
169 lines
6.1 KiB
Python
169 lines
6.1 KiB
Python
#
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# Copyright 2016 Quantopian, Inc.
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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from numpy import nan, full, append
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import pandas as pd
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from pandas.tslib import Timedelta
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from zipline.assets import Equity
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from zipline.testing.fixtures import (
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ZiplineTestCase,
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WithTradingSessions,
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WithDataPortal
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)
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class TestDataPortal(WithDataPortal,
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WithTradingSessions,
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ZiplineTestCase):
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ASSET_FINDER_EQUITY_SIDS = (1,)
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START_DATE = pd.Timestamp('2016-08-01')
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END_DATE = pd.Timestamp('2016-08-04')
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EQUITY_DAILY_BAR_SOURCE_FROM_MINUTE = True
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@classmethod
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def make_equity_minute_bar_data(cls):
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trading_calendar = cls.trading_calendars[Equity]
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# No data on first day.
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dts = trading_calendar.minutes_for_session(cls.trading_days[0])
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dfs = []
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dfs.append(pd.DataFrame(
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{
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'open': full(len(dts), nan),
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'high': full(len(dts), nan),
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'low': full(len(dts), nan),
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'close': full(len(dts), nan),
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'volume': full(len(dts), 0),
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},
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index=dts))
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dts = trading_calendar.minutes_for_session(cls.trading_days[1])
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dfs.append(pd.DataFrame(
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{
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'open': append(100.5, full(len(dts) - 1, nan)),
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'high': append(100.9, full(len(dts) - 1, nan)),
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'low': append(100.1, full(len(dts) - 1, nan)),
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'close': append(100.3, full(len(dts) - 1, nan)),
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'volume': append(1000, full(len(dts) - 1, nan)),
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},
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index=dts))
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dts = trading_calendar.minutes_for_session(cls.trading_days[2])
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dfs.append(pd.DataFrame(
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{
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'open': [nan, 103.50, 102.50, 104.50, 101.50, nan],
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'high': [nan, 103.90, 102.90, 104.90, 101.90, nan],
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'low': [nan, 103.10, 102.10, 104.10, 101.10, nan],
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'close': [nan, 103.30, 102.30, 104.30, 101.30, nan],
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'volume': [0, 1003, 1002, 1004, 1001, 0]
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},
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index=dts[:6]
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))
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dts = trading_calendar.minutes_for_session(cls.trading_days[3])
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dfs.append(pd.DataFrame(
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{
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'open': full(len(dts), nan),
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'high': full(len(dts), nan),
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'low': full(len(dts), nan),
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'close': full(len(dts), nan),
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'volume': full(len(dts), 0),
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},
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index=dts))
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yield 1, pd.concat(dfs)
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def test_get_last_traded_minute(self):
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trading_calendar = self.trading_calendars[Equity]
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# Case: Missing data at front of data set, and request dt is before
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# first value.
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dts = trading_calendar.minutes_for_session(self.trading_days[0])
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asset = self.asset_finder.retrieve_asset(1)
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self.assertTrue(pd.isnull(
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self.data_portal.get_last_traded_dt(
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asset, dts[0], 'minute')))
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# Case: Data on requested dt.
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dts = trading_calendar.minutes_for_session(self.trading_days[2])
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self.assertEqual(dts[1],
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self.data_portal.get_last_traded_dt(
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asset, dts[1], 'minute'))
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# Case: No data on dt, but data occuring before dt.
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self.assertEqual(dts[4],
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self.data_portal.get_last_traded_dt(
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asset, dts[5], 'minute'))
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def test_get_last_traded_dt_daily(self):
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# Case: Missing data at front of data set, and request dt is before
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# first value.
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asset = self.asset_finder.retrieve_asset(1)
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self.assertTrue(pd.isnull(
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self.data_portal.get_last_traded_dt(
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asset, self.trading_days[0], 'daily')))
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# Case: Data on requested dt.
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self.assertEqual(self.trading_days[1],
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self.data_portal.get_last_traded_dt(
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asset, self.trading_days[1], 'daily'))
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# Case: No data on dt, but data occuring before dt.
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self.assertEqual(self.trading_days[2],
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self.data_portal.get_last_traded_dt(
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asset, self.trading_days[3], 'daily'))
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def test_bar_count_for_simple_transforms(self):
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# July 2015
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# Su Mo Tu We Th Fr Sa
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# 1 2 3 4
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# 5 6 7 8 9 10 11
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# 12 13 14 15 16 17 18
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# 19 20 21 22 23 24 25
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# 26 27 28 29 30 31
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# half an hour into july 9, getting a 4-"day" window should get us
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# all the minutes of 7/6, 7/7, 7/8, and 31 minutes of 7/9
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july_9_dt = self.trading_calendar.open_and_close_for_session(
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pd.Timestamp("2015-07-09", tz='UTC')
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)[0] + Timedelta("30 minutes")
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self.assertEqual(
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(3 * 390) + 31,
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self.data_portal._get_minute_count_for_transform(july_9_dt, 4)
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)
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# November 2015
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# Su Mo Tu We Th Fr Sa
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# 1 2 3 4 5 6 7
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# 8 9 10 11 12 13 14
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# 15 16 17 18 19 20 21
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# 22 23 24 25 26 27 28
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# 29 30
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# nov 26th closed
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# nov 27th was an early close
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# half an hour into nov 30, getting a 4-"day" window should get us
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# all the minutes of 11/24, 11/25, 11/27 (half day!), and 31 minutes
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# of 11/30
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nov_30_dt = self.trading_calendar.open_and_close_for_session(
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pd.Timestamp("2015-11-30", tz='UTC')
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)[0] + Timedelta("30 minutes")
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self.assertEqual(
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390 + 390 + 210 + 31,
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self.data_portal._get_minute_count_for_transform(nov_30_dt, 4)
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)
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