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# This file is part of dax_apdb. 

# 

# Developed for the LSST Data Management System. 

# This product includes software developed by the LSST Project 

# (http://www.lsst.org). 

# See the COPYRIGHT file at the top-level directory of this distribution 

# for details of code ownership. 

# 

# This program is free software: you can redistribute it and/or modify 

# it under the terms of the GNU General Public License as published by 

# the Free Software Foundation, either version 3 of the License, or 

# (at your option) any later version. 

# 

# This program is distributed in the hope that it will be useful, 

# but WITHOUT ANY WARRANTY; without even the implied warranty of 

# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 

# GNU General Public License for more details. 

# 

# You should have received a copy of the GNU General Public License 

# along with this program. If not, see <http://www.gnu.org/licenses/>. 

 

"""Unit test for Apdb class. 

""" 

 

import datetime 

import pandas 

import unittest 

 

import lsst.afw.table as afwTable 

from lsst.dax.apdb import (Apdb, ApdbConfig, make_minimal_dia_object_schema, 

make_minimal_dia_source_schema) 

from lsst.sphgeom import Angle, Circle, HtmPixelization, Vector3d, UnitVector3d 

from lsst.geom import SpherePoint 

import lsst.utils.tests 

 

 

# HTM indexing level used in the unit tests 

HTM_LEVEL = 20 

 

 

def _makePixelRanges(): 

"""Generate pixel ID ranges for some envelope region""" 

pointing_v = UnitVector3d(1., 1., -1.) 

fov = 0.05 # radians 

region = Circle(pointing_v, Angle(fov/2)) 

pixelator = HtmPixelization(HTM_LEVEL) 

indices = pixelator.envelope(region, 128) 

return indices.ranges() 

 

 

def _makeObjectCatalog(pixel_ranges): 

"""Make a catalog containing a bunch of DiaObjects inside pixel envelope. 

 

The number of created records will be equal number of ranges (one object 

per pixel range). Coordinates of the created objects are not usable. 

""" 

# make afw catalog 

schema = make_minimal_dia_object_schema() 

catalog = afwTable.SourceCatalog(schema) 

 

# make small bunch of records, one entry per one pixel range, 

# we do not care about coordinates here, in current implementation 

# they are not used in any query 

v3d = Vector3d(1., 1., -1.) 

sp = SpherePoint(v3d) 

for oid, (start, end) in enumerate(pixel_ranges): 

record = catalog.addNew() 

record.set("id", oid) 

record.set("pixelId", start) 

record.set("coord_ra", sp.getRa()) 

record.set("coord_dec", sp.getDec()) 

 

return catalog 

 

 

def _makeObjectCatalogPandas(pixel_ranges): 

"""Make a catalog containing a bunch of DiaObjects inside pixel envelope. 

 

The number of created records will be equal to the number of ranges (one 

object per pixel range). Coordinates of the created objects are not usable. 

""" 

v3d = Vector3d(1., 1., -1.) 

sp = SpherePoint(v3d) 

data_list = [] 

for oid, (start, end) in enumerate(pixel_ranges): 

tmp_dict = {"diaObjectId": oid, 

"pixelId": start, 

"ra": sp.getRa().asDegrees(), 

"decl": sp.getDec().asDegrees()} 

data_list.append(tmp_dict) 

 

df = pandas.DataFrame(data=data_list) 

return df 

 

 

def _makeSourceCatalog(objects): 

"""Make a catalog containing a bunch of DiaSources associated with the 

input diaObjects. 

""" 

# make some sources 

schema = make_minimal_dia_source_schema() 

catalog = afwTable.BaseCatalog(schema) 

oids = [] 

for sid, obj in enumerate(objects): 

record = catalog.addNew() 

record.set("id", sid) 

record.set("ccdVisitId", 1) 

record.set("diaObjectId", obj["id"]) 

record.set("parent", 0) 

record.set("coord_ra", obj["coord_ra"]) 

record.set("coord_dec", obj["coord_dec"]) 

record.set("flags", 0) 

record.set("pixelId", obj["pixelId"]) 

oids.append(obj["id"]) 

 

return catalog, oids 

 

 

def _makeSourceCatalogPandas(objects): 

"""Make a catalog containing a bunch of DiaSources associated with the 

input diaObjects. 

""" 

# make some sources 

catalog = [] 

oids = [] 

for sid, (index, obj) in enumerate(objects.iterrows()): 

catalog.append({"diaSourceId": sid, 

"ccdVisitId": 1, 

"diaObjectId": obj["diaObjectId"], 

"parentDiaSourceId": 0, 

"ra": obj["ra"], 

"decl": obj["decl"], 

"flags": 0, 

"pixelId": obj["pixelId"]}) 

oids.append(obj["diaObjectId"]) 

return pandas.DataFrame(data=catalog), oids 

 

 

def _makeForcedSourceCatalog(objects): 

"""Make a catalog containing a bunch of DiaFourceSources associated with 

the input diaObjects. 

""" 

# make some sources 

schema = afwTable.Schema() 

schema.addField("diaObjectId", "L") 

schema.addField("ccdVisitId", "L") 

schema.addField("flags", "L") 

catalog = afwTable.BaseCatalog(schema) 

oids = [] 

for obj in objects: 

record = catalog.addNew() 

record.set("diaObjectId", obj["id"]) 

record.set("ccdVisitId", 1) 

record.set("flags", 0) 

oids.append(obj["id"]) 

 

return catalog, oids 

 

 

def _makeForcedSourceCatalogPandas(objects): 

"""Make a catalog containing a bunch of DiaFourceSources associated with 

the input diaObjects. 

""" 

# make some sources 

catalog = [] 

oids = [] 

for index, obj in objects.iterrows(): 

catalog.append({"diaObjectId": obj["diaObjectId"], 

"ccdVisitId": 1, 

"flags": 0}) 

oids.append(obj["diaObjectId"]) 

return pandas.DataFrame(data=catalog), oids 

 

 

class ApdbTestCase(unittest.TestCase): 

"""A test case for Apdb class 

""" 

 

use_pandas = False 

data_type = afwTable.SourceCatalog 

 

def _assertCatalog(self, catalog, size, type=afwTable.SourceCatalog): 

"""Validate catalog type and size 

 

Parameters 

---------- 

calalog : `lsst.afw.table.SourceCatalog` 

size : int 

Expected catalog size 

type : `type`, optional 

Expected catalog type 

""" 

self.assertIsInstance(catalog, type) 

self.assertEqual(len(catalog), size) 

 

def test_makeSchema(self): 

"""Test for making an instance of Apdb using in-memory sqlite engine. 

""" 

# sqlite does not support default READ_COMMITTED, for in-memory 

# database have to use connection pool 

config = ApdbConfig(db_url="sqlite://", 

isolation_level="READ_UNCOMMITTED") 

apdb = Apdb(config) 

# the essence of a test here is that there are no exceptions. 

apdb.makeSchema() 

 

def test_emptyGetsBaseline0months(self): 

"""Test for getting data from empty database. 

 

All get() methods should return empty results, only useful for 

checking that code is not broken. 

""" 

 

# set read_sources_months to 0 so that Forced/Sources are None 

config = ApdbConfig(db_url="sqlite:///", 

isolation_level="READ_UNCOMMITTED", 

read_sources_months=0, 

read_forced_sources_months=0) 

apdb = Apdb(config) 

apdb.makeSchema() 

 

pixel_ranges = _makePixelRanges() 

visit_time = datetime.datetime.now() 

 

# get objects by region 

res = apdb.getDiaObjects(pixel_ranges, return_pandas=self.use_pandas) 

self._assertCatalog(res, 0, type=self.data_type) 

 

# get sources by region 

res = apdb.getDiaSourcesInRegion(pixel_ranges, visit_time, return_pandas=self.use_pandas) 

self.assertIs(res, None) 

 

# get sources by object ID, empty object list 

res = apdb.getDiaSources([], visit_time, return_pandas=self.use_pandas) 

 

# get forced sources by object ID, empty object list 

res = apdb.getDiaForcedSources([], visit_time, return_pandas=self.use_pandas) 

self.assertIs(res, None) 

 

def test_emptyGetsBaseline(self): 

"""Test for getting data from empty database. 

 

All get() methods should return empty results, only useful for 

checking that code is not broken. 

""" 

 

# use non-zero months for Forced/Source fetching 

config = ApdbConfig(db_url="sqlite:///", 

isolation_level="READ_UNCOMMITTED", 

read_sources_months=12, 

read_forced_sources_months=12) 

apdb = Apdb(config) 

apdb.makeSchema() 

 

pixel_ranges = _makePixelRanges() 

visit_time = datetime.datetime.now() 

 

# get objects by region 

res = apdb.getDiaObjects(pixel_ranges, return_pandas=self.use_pandas) 

self._assertCatalog(res, 0, type=self.data_type) 

 

# get sources by region 

res = apdb.getDiaSourcesInRegion(pixel_ranges, visit_time, return_pandas=self.use_pandas) 

self._assertCatalog(res, 0, type=self.data_type) 

 

# get sources by object ID, empty object list, should return None 

res = apdb.getDiaSources([], visit_time, return_pandas=self.use_pandas) 

self.assertIs(res, None) 

 

# get sources by object ID, non-empty object list 

res = apdb.getDiaSources([1, 2, 3], visit_time, return_pandas=self.use_pandas) 

self._assertCatalog(res, 0, type=self.data_type) 

 

# get forced sources by object ID, empty object list 

res = apdb.getDiaForcedSources([], visit_time, return_pandas=self.use_pandas) 

self.assertIs(res, None) 

 

# get sources by object ID, non-empty object list 

res = apdb.getDiaForcedSources([1, 2, 3], visit_time, return_pandas=self.use_pandas) 

self._assertCatalog(res, 0, type=self.data_type) 

 

def test_emptyGetsObjectLast(self): 

"""Test for getting DiaObjects from empty database using DiaObjectLast 

table. 

 

All get() methods should return empty results, only useful for 

checking that code is not broken. 

""" 

 

# don't care about sources. 

config = ApdbConfig(db_url="sqlite:///", 

isolation_level="READ_UNCOMMITTED", 

dia_object_index="last_object_table") 

apdb = Apdb(config) 

apdb.makeSchema() 

 

pixel_ranges = _makePixelRanges() 

 

# get objects by region 

res = apdb.getDiaObjects(pixel_ranges, return_pandas=self.use_pandas) 

self._assertCatalog(res, 0, type=self.data_type) 

 

def test_storeObjectsBaseline(self): 

"""Store and retrieve DiaObjects.""" 

 

# don't care about sources. 

config = ApdbConfig(db_url="sqlite:///", 

isolation_level="READ_UNCOMMITTED", 

dia_object_index="baseline") 

apdb = Apdb(config) 

apdb.makeSchema() 

 

pixel_ranges = _makePixelRanges() 

visit_time = datetime.datetime.now() 

 

# make afw catalog with Objects 

if self.use_pandas: 

catalog = _makeObjectCatalogPandas(pixel_ranges) 

else: 

catalog = _makeObjectCatalog(pixel_ranges) 

 

# store catalog 

apdb.storeDiaObjects(catalog, visit_time) 

 

# read it back and check sizes 

res = apdb.getDiaObjects(pixel_ranges, return_pandas=self.use_pandas) 

self._assertCatalog(res, len(catalog), type=self.data_type) 

 

def test_storeObjectsLast(self): 

"""Store and retrieve DiaObjects using DiaObjectLast table.""" 

# don't care about sources. 

config = ApdbConfig(db_url="sqlite:///", 

isolation_level="READ_UNCOMMITTED", 

dia_object_index="last_object_table", 

object_last_replace=True) 

apdb = Apdb(config) 

apdb.makeSchema() 

 

pixel_ranges = _makePixelRanges() 

visit_time = datetime.datetime.now() 

 

# make afw catalog with Objects 

if self.use_pandas: 

catalog = _makeObjectCatalogPandas(pixel_ranges) 

else: 

catalog = _makeObjectCatalog(pixel_ranges) 

 

# store catalog 

apdb.storeDiaObjects(catalog, visit_time) 

 

# read it back and check sizes 

res = apdb.getDiaObjects(pixel_ranges, return_pandas=self.use_pandas) 

self._assertCatalog(res, len(catalog), type=self.data_type) 

 

def test_storeSources(self): 

"""Store and retrieve DiaSources.""" 

config = ApdbConfig(db_url="sqlite:///", 

isolation_level="READ_UNCOMMITTED", 

read_sources_months=12, 

read_forced_sources_months=12) 

apdb = Apdb(config) 

apdb.makeSchema() 

 

pixel_ranges = _makePixelRanges() 

visit_time = datetime.datetime.now() 

 

# have to store Objects first 

if self.use_pandas: 

objects = _makeObjectCatalogPandas(pixel_ranges) 

catalog, oids = _makeSourceCatalogPandas(objects) 

else: 

objects = _makeObjectCatalog(pixel_ranges) 

catalog, oids = _makeSourceCatalog(objects) 

 

# save the objects 

apdb.storeDiaObjects(objects, visit_time) 

 

# save the sources 

apdb.storeDiaSources(catalog) 

 

# read it back and check sizes 

res = apdb.getDiaSourcesInRegion(pixel_ranges, visit_time, self.use_pandas) 

self._assertCatalog(res, len(catalog), type=self.data_type) 

 

# read it back using different method 

res = apdb.getDiaSources(oids, visit_time, self.use_pandas) 

self._assertCatalog(res, len(catalog), type=self.data_type) 

 

def test_storeForcedSources(self): 

"""Store and retrieve DiaForcedSources.""" 

 

config = ApdbConfig(db_url="sqlite:///", 

isolation_level="READ_UNCOMMITTED", 

read_sources_months=12, 

read_forced_sources_months=12) 

apdb = Apdb(config) 

apdb.makeSchema() 

 

pixel_ranges = _makePixelRanges() 

visit_time = datetime.datetime.now() 

 

# have to store Objects first 

if self.use_pandas: 

objects = _makeObjectCatalogPandas(pixel_ranges) 

catalog, oids = _makeForcedSourceCatalogPandas(objects) 

else: 

objects = _makeObjectCatalog(pixel_ranges) 

catalog, oids = _makeForcedSourceCatalog(objects) 

 

apdb.storeDiaObjects(objects, visit_time) 

 

# save them 

apdb.storeDiaForcedSources(catalog) 

 

# read it back and check sizes 

res = apdb.getDiaForcedSources(oids, visit_time, return_pandas=self.use_pandas) 

self._assertCatalog(res, len(catalog), type=self.data_type) 

 

 

class ApdbPandasTestCase(ApdbTestCase): 

"""A test case for Apdb using Pandas as the input/output""" 

 

use_pandas = True 

data_type = pandas.DataFrame 

 

 

class MyMemoryTestCase(lsst.utils.tests.MemoryTestCase): 

pass 

 

 

def setup_module(module): 

lsst.utils.tests.init() 

 

 

435 ↛ 436line 435 didn't jump to line 436, because the condition on line 435 was never trueif __name__ == "__main__": 

lsst.utils.tests.init() 

unittest.main()