def _do_historical_cache_test(self, storage):
# Cache pieces and then request entire and ensure cache is built properly
cdm = CachedDataManager(self.dm, storage, pd.datetime.now())
start, end = pd.to_datetime('1/2/2014'), pd.to_datetime('1/3/2014')
res = cdm.get_historical('SID1', 'FLDA', start, end)
pdtest.assert_frame_equal(res,
self.dm.hist['SID1'].ix[start:end, ['FLDA']])
self.assertEqual(1, self.dm.access_cnt)
start, end = pd.to_datetime('1/1/2014'), pd.to_datetime('1/4/2014')
res = cdm.get_historical('SID3', ['FLDA', 'FLDB', 'FLDC'], start, end)
pdtest.assert_frame_equal(res, self.dm.hist['SID3'])
self.assertEqual(2, self.dm.access_cnt)
#
# Request entire cache:
# SID1 - should result in 3 calls, 1 for prepending dates, 1 for appending dates, 1 for missing columns
# SID2 - should result in 1 call for entire frame
# SID3 - should result in 0 calls since it should be cached
start, end = as_date('1/1/2014'), as_date('1/4/2014')
res = cdm.get_historical(['SID1', 'SID2', 'SID3'],
['FLDA', 'FLDB', 'FLDC'], start, end)
self.assertEqual(6, self.dm.access_cnt)
pdtest.assert_frame_equal(res['SID1'], self.dm.hist['SID1'])
pdtest.assert_frame_equal(res['SID2'], self.dm.hist['SID2'])
pdtest.assert_frame_equal(res['SID3'], self.dm.hist['SID3'])
def _do_historical_cache_test(self, storage):
# Cache pieces and then request entire and ensure cache is built properly
cdm = CachedDataManager(self.dm, storage, pd.datetime.now())
start, end = pd.to_datetime('1/2/2014'), pd.to_datetime('1/3/2014')
res = cdm.get_historical('SID1', 'FLDA', start, end)
pdtest.assert_frame_equal(res, self.dm.hist['SID1'].ix[start:end,
['FLDA']])
self.assertEquals(1, self.dm.access_cnt)
start, end = pd.to_datetime('1/1/2014'), pd.to_datetime('1/4/2014')
res = cdm.get_historical('SID3', ['FLDA', 'FLDB', 'FLDC'], start, end)
pdtest.assert_frame_equal(res, self.dm.hist['SID3'])
self.assertEquals(2, self.dm.access_cnt)
#
# Request entire cache:
# SID1 - should result in 3 calls, 1 for prepending dates, 1 for appending dates, 1 for missing columns
# SID2 - should result in 1 call for entire frame
# SID3 - should result in 0 calls since it should be cached
start, end = as_date('1/1/2014'), as_date('1/4/2014')
res = cdm.get_historical(['SID1', 'SID2', 'SID3'],
['FLDA', 'FLDB', 'FLDC'], start, end)
self.assertEquals(6, self.dm.access_cnt)
pdtest.assert_frame_equal(res['SID1'], self.dm.hist['SID1'])
pdtest.assert_frame_equal(res['SID2'], self.dm.hist['SID2'])
pdtest.assert_frame_equal(res['SID3'], self.dm.hist['SID3'])
def _do_historical_cache_test(self, storage):
# Cache pieces and then request entire and ensure cache is built properly
cdm = CachedDataManager(self.dm, storage, pd.datetime.now())
start, end = pd.to_datetime("1/2/2014"), pd.to_datetime("1/3/2014")
res = cdm.get_historical("SID1", "FLDA", start, end)
pdtest.assert_frame_equal(res, self.dm.hist["SID1"].ix[start:end,
["FLDA"]])
self.assertEqual(1, self.dm.access_cnt)
start, end = pd.to_datetime("1/1/2014"), pd.to_datetime("1/4/2014")
res = cdm.get_historical("SID3", ["FLDA", "FLDB", "FLDC"], start, end)
pdtest.assert_frame_equal(res, self.dm.hist["SID3"])
self.assertEqual(2, self.dm.access_cnt)
#
# Request entire cache:
# SID1 - should result in 3 calls, 1 for prepending dates, 1 for appending dates, 1 for missing columns
# SID2 - should result in 1 call for entire frame
# SID3 - should result in 0 calls since it should be cached
start, end = as_date("1/1/2014"), as_date("1/4/2014")
res = cdm.get_historical(["SID1", "SID2", "SID3"],
["FLDA", "FLDB", "FLDC"], start, end)
self.assertEqual(6, self.dm.access_cnt)
pdtest.assert_frame_equal(res["SID1"], self.dm.hist["SID1"])
pdtest.assert_frame_equal(res["SID2"], self.dm.hist["SID2"])
pdtest.assert_frame_equal(res["SID3"], self.dm.hist["SID3"])
def _do_request_returns_less_cached(self, storage):
"""Request data for dates d1 to d2, but the returning data starts d1 + delta (imagine stock which just got listed)
An issue because cache will attempt to get missing date, so mechanism must exist to store not on the data
but the request for the data
"""
cdm = CachedDataManager(self.dm, storage, pd.datetime.now())
start, end = as_date('12/31/2013'), as_date('1/3/2014')
res = cdm.get_historical('SID1', 'FLDA', start, end)
pdtest.assert_frame_equal(res, self.dm.hist['SID1'].ix[start:end, ['FLDA']])
self.assertEquals(1, self.dm.access_cnt)
res = cdm.get_historical('SID1', 'FLDA', start, end)
self.assertEquals(1, self.dm.access_cnt)
def test_cache_sub(self):
cdm = CachedDataManager(self.dm, MemoryStorage(), pd.datetime.now())
# get a single field for each sid
for i, (sid, fld) in enumerate([('SID1', 'FLDA'), ('SID2', 'FLDB'), ('SID3', 'FLDC')]):
res = cdm.get_attributes(sid, fld)
pdtest.assert_frame_equal(res, self.dm.df.ix[sid:sid, fld:fld])
self.assertEquals(i+1, self.dm.access_cnt)
# now force cache to make multiple requests to build entire frame
sids = ['SID1', 'SID2', 'SID3']
flds = ['FLDA', 'FLDB', 'FLDC']
res = cdm.get_attributes(sids, flds)
pdtest.assert_frame_equal(res, self.dm.df)
# should be since each sid must be made whjole individually
self.assertEquals(6, self.dm.access_cnt)
def _do_request_returns_less_cached(self, storage):
"""Request data for dates d1 to d2, but the returning data starts d1 + delta (imagine stock which just got listed)
An issue because cache will attempt to get missing date, so mechanism must exist to store not on the data
but the request for the data
"""
cdm = CachedDataManager(self.dm, storage, pd.datetime.now())
start, end = as_date('12/31/2013'), as_date('1/3/2014')
res = cdm.get_historical('SID1', 'FLDA', start, end)
pdtest.assert_frame_equal(res, self.dm.hist['SID1'].ix[start:end,
['FLDA']])
self.assertEquals(1, self.dm.access_cnt)
res = cdm.get_historical('SID1', 'FLDA', start, end)
self.assertEquals(1, self.dm.access_cnt)
def test_cache_sub(self):
cdm = CachedDataManager(self.dm, MemoryStorage(), pd.datetime.now())
# get a single field for each sid
for i, (sid, fld) in enumerate([('SID1', 'FLDA'), ('SID2', 'FLDB'),
('SID3', 'FLDC')]):
res = cdm.get_attributes(sid, fld)
pdtest.assert_frame_equal(res, self.dm.df.ix[sid:sid, fld:fld])
self.assertEquals(i + 1, self.dm.access_cnt)
# now force cache to make multiple requests to build entire frame
sids = ['SID1', 'SID2', 'SID3']
flds = ['FLDA', 'FLDB', 'FLDC']
res = cdm.get_attributes(sids, flds)
pdtest.assert_frame_equal(res, self.dm.df)
# should be since each sid must be made whjole individually
self.assertEquals(6, self.dm.access_cnt)
def _do_cache_test(self, storage):
cdm = CachedDataManager(self.dm, storage, pd.datetime.now())
sids = ['SID1', 'SID2', 'SID3']
flds = ['FLDA', 'FLDB', 'FLDC']
res = cdm.get_attributes(sids, flds)
pdtest.assert_frame_equal(res, self.dm.df)
self.assertEquals(1, self.dm.access_cnt)
# try when reordering
sids = ['SID3', 'SID1', 'SID2']
flds = ['FLDB', 'FLDA', 'FLDC']
res = cdm.get_attributes(sids, flds)
pdtest.assert_frame_equal(res, self.dm.df.ix[sids, flds])
self.assertEquals(1, self.dm.access_cnt)
# miss the cache by setting an override which is none - this should not effect anything
res = cdm.get_attributes(sids, flds, fake=None)
pdtest.assert_frame_equal(res, self.dm.df.ix[sids, flds])
self.assertEquals(1, self.dm.access_cnt)
# REAL cache miss
res = cdm.get_attributes(sids, flds, fake='value')
pdtest.assert_frame_equal(res, self.dm.df.ix[sids, flds])
self.assertEquals(2, self.dm.access_cnt)
def _do_cache_test(self, storage):
cdm = CachedDataManager(self.dm, storage, pd.datetime.now())
sids = ['SID1', 'SID2', 'SID3']
flds = ['FLDA', 'FLDB', 'FLDC']
res = cdm.get_attributes(sids, flds)
pdtest.assert_frame_equal(res, self.dm.df)
self.assertEquals(1, self.dm.access_cnt)
# try when reordering
sids = ['SID3', 'SID1', 'SID2']
flds = ['FLDB', 'FLDA', 'FLDC']
res = cdm.get_attributes(sids, flds)
pdtest.assert_frame_equal(res, self.dm.df.ix[sids, flds])
self.assertEquals(1, self.dm.access_cnt)
# miss the cache by setting an override which is none - this should not effect anything
res = cdm.get_attributes(sids, flds, fake=None)
pdtest.assert_frame_equal(res, self.dm.df.ix[sids, flds])
self.assertEquals(1, self.dm.access_cnt)
# REAL cache miss
res = cdm.get_attributes(sids, flds, fake='value')
pdtest.assert_frame_equal(res, self.dm.df.ix[sids, flds])
self.assertEquals(2, self.dm.access_cnt)
