mirror of
https://github.com/wassname/catalyst.git
synced 2026-07-11 23:06:36 +08:00
Joe Jevnik
bc0b117dc9
Changes BcolzDailyBarWriter to not be an abc, data is passed as an iterator of (sid, dataframe) pairs to the write method. Changes the AssetsDBWriter to be a single class which accepts an engine at construction time and has a `write` method for writing dataframes for the various tables. We no longer support writing the various other data types, callers should coerce their data into a dataframe themselves. See zipline.assets.synthetic for some helpers to do this. Adds many new fixtures and updates some existing fixtures to use the new ones: WithDefaultDateBounds A fixture that provides the suite a START_DATE and END_DATE. This is meant to make it easy for other fixtures to synchronize their date ranges without depending on eachother in strange ways. For example, WithBcolzMinuteBarReader and WithBcolzDailyBarReader by default should both have data for the same dates, so they may use depend on WithDefaultDates without forcing a dependency between them. WithTmpDir, WithInstanceTmpDir Provides the suite or individual test case a temporary directory. WithBcolzDailyBarReader Provides the suite a BcolzDailyBarReader which reads from bcolz data written to a temporary directory. The data will be read from dataframes and then converted to bcolz files with BcolzDailyBarWriter.write WithBcolzDailyBarReaderFromCSVs Provides the suite a BcolzDailyBarReader which reads from bcolz data written to a temporary directory. The data will be read from a collection of CSV files and then converted into the bcolz data through BcolzDailyBarWriter.write_csvs WithBcolzMinuteBarReader Provides the suite a BcolzMinuteBarReader which reads from bcolz data written to a temporary directory. The data will be read from dataframes and then converted to bcolz files with BcolzMinuteBarWriter.write WithAdjustmentReader Provides the suite a SQLiteAdjustmentReader which reads from an in memory sqlite database. The data will be read from dataframes and then converted into sqlite with SQLiteAdjustmentWriter.write WithDataPortal Provides each test case a DataPortal object with data from temporary resources.
560 lines
20 KiB
Python
560 lines
20 KiB
Python
#
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# Copyright 2015 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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"""
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Tests for USEquityPricingLoader and related classes.
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"""
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from numpy import (
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arange,
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datetime64,
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float64,
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ones,
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uint32,
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)
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from numpy.testing import (
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assert_allclose,
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assert_array_equal,
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)
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from pandas import (
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concat,
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DataFrame,
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Int64Index,
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Timestamp,
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)
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from toolz.curried.operator import getitem
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from zipline.lib.adjustment import Float64Multiply
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from zipline.pipeline.loaders.synthetic import (
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NullAdjustmentReader,
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make_daily_bar_data,
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expected_daily_bar_values_2d,
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)
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from zipline.pipeline.loaders.equity_pricing_loader import (
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USEquityPricingLoader,
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)
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from zipline.errors import WindowLengthTooLong
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from zipline.pipeline.data import USEquityPricing
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from zipline.testing import (
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seconds_to_timestamp,
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str_to_seconds,
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MockDailyBarReader,
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)
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from zipline.testing.fixtures import (
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WithAdjustmentReader,
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ZiplineTestCase,
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)
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# Test calendar ranges over the month of June 2015
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# June 2015
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# Mo Tu We Th Fr Sa Su
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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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TEST_CALENDAR_START = Timestamp('2015-06-01', tz='UTC')
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TEST_CALENDAR_STOP = Timestamp('2015-06-30', tz='UTC')
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TEST_QUERY_START = Timestamp('2015-06-10', tz='UTC')
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TEST_QUERY_STOP = Timestamp('2015-06-19', tz='UTC')
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# One asset for each of the cases enumerated in load_raw_arrays_from_bcolz.
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EQUITY_INFO = DataFrame(
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[
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# 1) The equity's trades start and end before query.
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{'start_date': '2015-06-01', 'end_date': '2015-06-05'},
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# 2) The equity's trades start and end after query.
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{'start_date': '2015-06-22', 'end_date': '2015-06-30'},
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# 3) The equity's data covers all dates in range.
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{'start_date': '2015-06-02', 'end_date': '2015-06-30'},
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# 4) The equity's trades start before the query start, but stop
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# before the query end.
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{'start_date': '2015-06-01', 'end_date': '2015-06-15'},
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# 5) The equity's trades start and end during the query.
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{'start_date': '2015-06-12', 'end_date': '2015-06-18'},
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# 6) The equity's trades start during the query, but extend through
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# the whole query.
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{'start_date': '2015-06-15', 'end_date': '2015-06-25'},
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],
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index=arange(1, 7),
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columns=['start_date', 'end_date'],
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).astype(datetime64)
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TEST_QUERY_ASSETS = EQUITY_INFO.index
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# ADJUSTMENTS use the following scheme to indicate information about the value
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# upon inspection.
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#
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# 1s place is the equity
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#
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# 0.1s place is the action type, with:
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#
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# splits, 1
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# mergers, 2
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# dividends, 3
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#
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# 0.001s is the date
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SPLITS = DataFrame(
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[
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# Before query range, should be excluded.
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{'effective_date': str_to_seconds('2015-06-03'),
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'ratio': 1.103,
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'sid': 1},
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# First day of query range, should be excluded.
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{'effective_date': str_to_seconds('2015-06-10'),
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'ratio': 3.110,
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'sid': 3},
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# Third day of query range, should have last_row of 2
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{'effective_date': str_to_seconds('2015-06-12'),
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'ratio': 3.112,
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'sid': 3},
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# After query range, should be excluded.
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{'effective_date': str_to_seconds('2015-06-21'),
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'ratio': 6.121,
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'sid': 6},
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# Another action in query range, should have last_row of 1
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{'effective_date': str_to_seconds('2015-06-11'),
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'ratio': 3.111,
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'sid': 3},
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# Last day of range. Should have last_row of 7
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{'effective_date': str_to_seconds('2015-06-19'),
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'ratio': 3.119,
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'sid': 3},
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],
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columns=['effective_date', 'ratio', 'sid'],
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)
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MERGERS = DataFrame(
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[
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# Before query range, should be excluded.
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{'effective_date': str_to_seconds('2015-06-03'),
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'ratio': 1.203,
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'sid': 1},
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# First day of query range, should be excluded.
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{'effective_date': str_to_seconds('2015-06-10'),
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'ratio': 3.210,
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'sid': 3},
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# Third day of query range, should have last_row of 2
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{'effective_date': str_to_seconds('2015-06-12'),
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'ratio': 3.212,
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'sid': 3},
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# After query range, should be excluded.
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{'effective_date': str_to_seconds('2015-06-25'),
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'ratio': 6.225,
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'sid': 6},
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# Another action in query range, should have last_row of 2
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{'effective_date': str_to_seconds('2015-06-12'),
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'ratio': 4.212,
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'sid': 4},
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# Last day of range. Should have last_row of 7
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{'effective_date': str_to_seconds('2015-06-19'),
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'ratio': 3.219,
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'sid': 3},
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],
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columns=['effective_date', 'ratio', 'sid'],
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)
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DIVIDENDS = DataFrame(
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[
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# Before query range, should be excluded.
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{'declared_date': Timestamp('2015-05-01', tz='UTC').to_datetime64(),
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'ex_date': Timestamp('2015-06-01', tz='UTC').to_datetime64(),
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'record_date': Timestamp('2015-06-03', tz='UTC').to_datetime64(),
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'pay_date': Timestamp('2015-06-05', tz='UTC').to_datetime64(),
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'amount': 90.0,
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'sid': 1},
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# First day of query range, should be excluded.
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{'declared_date': Timestamp('2015-06-01', tz='UTC').to_datetime64(),
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'ex_date': Timestamp('2015-06-10', tz='UTC').to_datetime64(),
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'record_date': Timestamp('2015-06-15', tz='UTC').to_datetime64(),
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'pay_date': Timestamp('2015-06-17', tz='UTC').to_datetime64(),
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'amount': 80.0,
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'sid': 3},
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# Third day of query range, should have last_row of 2
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{'declared_date': Timestamp('2015-06-01', tz='UTC').to_datetime64(),
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'ex_date': Timestamp('2015-06-12', tz='UTC').to_datetime64(),
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'record_date': Timestamp('2015-06-15', tz='UTC').to_datetime64(),
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'pay_date': Timestamp('2015-06-17', tz='UTC').to_datetime64(),
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'amount': 70.0,
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'sid': 3},
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# After query range, should be excluded.
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{'declared_date': Timestamp('2015-06-01', tz='UTC').to_datetime64(),
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'ex_date': Timestamp('2015-06-25', tz='UTC').to_datetime64(),
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'record_date': Timestamp('2015-06-28', tz='UTC').to_datetime64(),
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'pay_date': Timestamp('2015-06-30', tz='UTC').to_datetime64(),
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'amount': 60.0,
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'sid': 6},
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# Another action in query range, should have last_row of 3
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{'declared_date': Timestamp('2015-06-01', tz='UTC').to_datetime64(),
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'ex_date': Timestamp('2015-06-15', tz='UTC').to_datetime64(),
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'record_date': Timestamp('2015-06-18', tz='UTC').to_datetime64(),
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'pay_date': Timestamp('2015-06-20', tz='UTC').to_datetime64(),
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'amount': 50.0,
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'sid': 3},
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# Last day of range. Should have last_row of 7
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{'declared_date': Timestamp('2015-06-01', tz='UTC').to_datetime64(),
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'ex_date': Timestamp('2015-06-19', tz='UTC').to_datetime64(),
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'record_date': Timestamp('2015-06-22', tz='UTC').to_datetime64(),
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'pay_date': Timestamp('2015-06-30', tz='UTC').to_datetime64(),
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'amount': 40.0,
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'sid': 3},
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],
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columns=['declared_date',
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'ex_date',
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'record_date',
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'pay_date',
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'amount',
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'sid'],
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)
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DIVIDENDS_EXPECTED = DataFrame(
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[
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# Before query range, should be excluded.
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{'effective_date': str_to_seconds('2015-06-01'),
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'ratio': 0.1,
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'sid': 1},
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# First day of query range, should be excluded.
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{'effective_date': str_to_seconds('2015-06-10'),
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'ratio': 0.20,
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'sid': 3},
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# Third day of query range, should have last_row of 2
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{'effective_date': str_to_seconds('2015-06-12'),
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'ratio': 0.30,
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'sid': 3},
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# After query range, should be excluded.
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{'effective_date': str_to_seconds('2015-06-25'),
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'ratio': 0.40,
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'sid': 6},
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# Another action in query range, should have last_row of 3
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{'effective_date': str_to_seconds('2015-06-15'),
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'ratio': 0.50,
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'sid': 3},
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# Last day of range. Should have last_row of 7
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{'effective_date': str_to_seconds('2015-06-19'),
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'ratio': 0.60,
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'sid': 3},
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],
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columns=['effective_date', 'ratio', 'sid'],
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)
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class USEquityPricingLoaderTestCase(WithAdjustmentReader,
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ZiplineTestCase):
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START_DATE = TEST_CALENDAR_START
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END_DATE = TEST_CALENDAR_STOP
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asset_ids = 1, 2, 3
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@classmethod
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def make_equity_info(cls):
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return EQUITY_INFO
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@classmethod
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def make_splits_data(cls):
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return SPLITS
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@classmethod
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def make_mergers_data(cls):
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return MERGERS
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@classmethod
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def make_dividends_data(cls):
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return DIVIDENDS
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@classmethod
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def make_adjustment_writer_daily_bar_reader(cls):
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return MockDailyBarReader()
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@classmethod
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def make_daily_bar_data(cls):
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return make_daily_bar_data(
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EQUITY_INFO,
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cls.bcolz_daily_bar_days,
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)
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@classmethod
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def init_class_fixtures(cls):
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super(USEquityPricingLoaderTestCase, cls).init_class_fixtures()
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cls.assets = TEST_QUERY_ASSETS
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cls.asset_info = EQUITY_INFO
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def test_input_sanity(self):
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# Ensure that the input data doesn't contain adjustments during periods
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# where the corresponding asset didn't exist.
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for table in SPLITS, MERGERS:
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for eff_date_secs, _, sid in table.itertuples(index=False):
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eff_date = Timestamp(eff_date_secs, unit='s')
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asset_start, asset_end = EQUITY_INFO.ix[
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sid, ['start_date', 'end_date']
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]
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self.assertGreaterEqual(eff_date, asset_start)
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self.assertLessEqual(eff_date, asset_end)
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def calendar_days_between(self, start_date, end_date, shift=0):
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slice_ = self.bcolz_daily_bar_days.slice_indexer(start_date, end_date)
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start = slice_.start + shift
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stop = slice_.stop + shift
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if start < 0:
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raise KeyError(start_date, shift)
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return self.bcolz_daily_bar_days[start:stop]
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def expected_adjustments(self, start_date, end_date):
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price_adjustments = {}
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volume_adjustments = {}
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query_days = self.calendar_days_between(start_date, end_date)
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start_loc = query_days.get_loc(start_date)
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for table in SPLITS, MERGERS, DIVIDENDS_EXPECTED:
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for eff_date_secs, ratio, sid in table.itertuples(index=False):
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eff_date = Timestamp(eff_date_secs, unit='s', tz='UTC')
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# Ignore adjustments outside the query bounds.
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if not (start_date <= eff_date <= end_date):
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continue
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eff_date_loc = query_days.get_loc(eff_date)
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delta = eff_date_loc - start_loc
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# Pricing adjustments should be applied on the date
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# corresponding to the effective date of the input data. They
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# should affect all rows **before** the effective date.
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price_adjustments.setdefault(delta, []).append(
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Float64Multiply(
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first_row=0,
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last_row=delta,
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first_col=sid - 1,
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last_col=sid - 1,
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value=ratio,
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)
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)
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# Volume is *inversely* affected by *splits only*.
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if table is SPLITS:
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volume_adjustments.setdefault(delta, []).append(
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Float64Multiply(
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first_row=0,
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last_row=delta,
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first_col=sid - 1,
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last_col=sid - 1,
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value=1.0 / ratio,
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)
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)
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return price_adjustments, volume_adjustments
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def test_load_adjustments_from_sqlite(self):
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columns = [USEquityPricing.close, USEquityPricing.volume]
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query_days = self.calendar_days_between(
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TEST_QUERY_START,
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TEST_QUERY_STOP,
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)
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adjustments = self.adjustment_reader.load_adjustments(
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columns,
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query_days,
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self.assets,
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)
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close_adjustments = adjustments[0]
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volume_adjustments = adjustments[1]
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expected_close_adjustments, expected_volume_adjustments = \
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self.expected_adjustments(TEST_QUERY_START, TEST_QUERY_STOP)
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for key in expected_close_adjustments:
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close_adjustment = close_adjustments[key]
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for j, adj in enumerate(close_adjustment):
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expected = expected_close_adjustments[key][j]
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self.assertEqual(adj.first_row, expected.first_row)
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self.assertEqual(adj.last_row, expected.last_row)
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self.assertEqual(adj.first_col, expected.first_col)
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self.assertEqual(adj.last_col, expected.last_col)
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assert_allclose(adj.value, expected.value)
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for key in expected_volume_adjustments:
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volume_adjustment = volume_adjustments[key]
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for j, adj in enumerate(volume_adjustment):
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expected = expected_volume_adjustments[key][j]
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self.assertEqual(adj.first_row, expected.first_row)
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self.assertEqual(adj.last_row, expected.last_row)
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self.assertEqual(adj.first_col, expected.first_col)
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self.assertEqual(adj.last_col, expected.last_col)
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assert_allclose(adj.value, expected.value)
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def test_read_no_adjustments(self):
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adjustment_reader = NullAdjustmentReader()
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columns = [USEquityPricing.close, USEquityPricing.volume]
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query_days = self.calendar_days_between(
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TEST_QUERY_START,
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TEST_QUERY_STOP
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)
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# Our expected results for each day are based on values from the
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# previous day.
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shifted_query_days = self.calendar_days_between(
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TEST_QUERY_START,
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TEST_QUERY_STOP,
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shift=-1,
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)
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adjustments = adjustment_reader.load_adjustments(
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columns,
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query_days,
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self.assets,
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)
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self.assertEqual(adjustments, [{}, {}])
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pricing_loader = USEquityPricingLoader(
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self.bcolz_daily_bar_reader,
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adjustment_reader,
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)
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results = pricing_loader.load_adjusted_array(
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columns,
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dates=query_days,
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assets=self.assets,
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mask=ones((len(query_days), len(self.assets)), dtype=bool),
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)
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closes, volumes = map(getitem(results), columns)
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expected_baseline_closes = expected_daily_bar_values_2d(
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shifted_query_days,
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self.asset_info,
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'close',
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)
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expected_baseline_volumes = expected_daily_bar_values_2d(
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shifted_query_days,
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self.asset_info,
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'volume',
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)
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# AdjustedArrays should yield the same data as the expected baseline.
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for windowlen in range(1, len(query_days) + 1):
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for offset, window in enumerate(closes.traverse(windowlen)):
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assert_array_equal(
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expected_baseline_closes[offset:offset + windowlen],
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window,
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)
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for offset, window in enumerate(volumes.traverse(windowlen)):
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assert_array_equal(
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expected_baseline_volumes[offset:offset + windowlen],
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window,
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)
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|
|
# Verify that we checked up to the longest possible window.
|
|
with self.assertRaises(WindowLengthTooLong):
|
|
closes.traverse(windowlen + 1)
|
|
with self.assertRaises(WindowLengthTooLong):
|
|
volumes.traverse(windowlen + 1)
|
|
|
|
def apply_adjustments(self, dates, assets, baseline_values, adjustments):
|
|
min_date, max_date = dates[[0, -1]]
|
|
# HACK: Simulate the coercion to float64 we do in adjusted_array. This
|
|
# should be removed when AdjustedArray properly supports
|
|
# non-floating-point types.
|
|
orig_dtype = baseline_values.dtype
|
|
values = baseline_values.astype(float64).copy()
|
|
for eff_date_secs, ratio, sid in adjustments.itertuples(index=False):
|
|
eff_date = seconds_to_timestamp(eff_date_secs)
|
|
# Don't apply adjustments that aren't in the current date range.
|
|
if eff_date not in dates:
|
|
continue
|
|
eff_date_loc = dates.get_loc(eff_date)
|
|
asset_col = assets.get_loc(sid)
|
|
# Apply ratio multiplicatively to the asset column on all rows less
|
|
# than or equal adjustment effective date.
|
|
values[:eff_date_loc + 1, asset_col] *= ratio
|
|
return values.astype(orig_dtype)
|
|
|
|
def test_read_with_adjustments(self):
|
|
columns = [USEquityPricing.high, USEquityPricing.volume]
|
|
query_days = self.calendar_days_between(
|
|
TEST_QUERY_START,
|
|
TEST_QUERY_STOP
|
|
)
|
|
# Our expected results for each day are based on values from the
|
|
# previous day.
|
|
shifted_query_days = self.calendar_days_between(
|
|
TEST_QUERY_START,
|
|
TEST_QUERY_STOP,
|
|
shift=-1,
|
|
)
|
|
|
|
pricing_loader = USEquityPricingLoader(
|
|
self.bcolz_daily_bar_reader,
|
|
self.adjustment_reader,
|
|
)
|
|
|
|
results = pricing_loader.load_adjusted_array(
|
|
columns,
|
|
dates=query_days,
|
|
assets=Int64Index(arange(1, 7)),
|
|
mask=ones((len(query_days), 6), dtype=bool),
|
|
)
|
|
highs, volumes = map(getitem(results), columns)
|
|
|
|
expected_baseline_highs = expected_daily_bar_values_2d(
|
|
shifted_query_days,
|
|
self.asset_info,
|
|
'high',
|
|
)
|
|
expected_baseline_volumes = expected_daily_bar_values_2d(
|
|
shifted_query_days,
|
|
self.asset_info,
|
|
'volume',
|
|
)
|
|
|
|
# At each point in time, the AdjustedArrays should yield the baseline
|
|
# with all adjustments up to that date applied.
|
|
for windowlen in range(1, len(query_days) + 1):
|
|
for offset, window in enumerate(highs.traverse(windowlen)):
|
|
baseline = expected_baseline_highs[offset:offset + windowlen]
|
|
baseline_dates = query_days[offset:offset + windowlen]
|
|
expected_adjusted_highs = self.apply_adjustments(
|
|
baseline_dates,
|
|
self.assets,
|
|
baseline,
|
|
# Apply all adjustments.
|
|
concat([SPLITS, MERGERS, DIVIDENDS_EXPECTED],
|
|
ignore_index=True),
|
|
)
|
|
assert_allclose(expected_adjusted_highs, window)
|
|
|
|
for offset, window in enumerate(volumes.traverse(windowlen)):
|
|
baseline = expected_baseline_volumes[offset:offset + windowlen]
|
|
baseline_dates = query_days[offset:offset + windowlen]
|
|
# Apply only splits and invert the ratio.
|
|
adjustments = SPLITS.copy()
|
|
adjustments.ratio = 1 / adjustments.ratio
|
|
|
|
expected_adjusted_volumes = self.apply_adjustments(
|
|
baseline_dates,
|
|
self.assets,
|
|
baseline,
|
|
adjustments,
|
|
)
|
|
# FIXME: Make AdjustedArray properly support integral types.
|
|
assert_array_equal(
|
|
expected_adjusted_volumes,
|
|
window.astype(uint32),
|
|
)
|
|
|
|
# Verify that we checked up to the longest possible window.
|
|
with self.assertRaises(WindowLengthTooLong):
|
|
highs.traverse(windowlen + 1)
|
|
with self.assertRaises(WindowLengthTooLong):
|
|
volumes.traverse(windowlen + 1)
|