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# This file is part of dax_ppdb. 

# 

# 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 Ppdb class. 

""" 

 

import datetime 

import unittest 

 

import lsst.afw.table as afwTable 

from lsst.dax.ppdb import (Ppdb, PpdbConfig, 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 

 

 

class PpdbTestCase(unittest.TestCase): 

"""A test case for Ppdb class 

""" 

 

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 Ppdb using in-memory sqlite engine. 

""" 

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

# database have to use connection pool 

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

isolation_level="READ_UNCOMMITTED") 

ppdb = Ppdb(config) 

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

ppdb.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 = PpdbConfig(db_url="sqlite:///", 

isolation_level="READ_UNCOMMITTED", 

read_sources_months=0, 

read_forced_sources_months=0) 

ppdb = Ppdb(config) 

ppdb.makeSchema() 

 

pixel_ranges = _makePixelRanges() 

visit_time = datetime.datetime.now() 

 

# get objects by region 

res = ppdb.getDiaObjects(pixel_ranges) 

self._assertCatalog(res, 0) 

 

# get sources by region 

res = ppdb.getDiaSourcesInRegion(pixel_ranges, visit_time) 

self.assertIs(res, None) 

 

# get sources by object ID, empty object list 

res = ppdb.getDiaSources([], visit_time) 

self.assertIs(res, None) 

 

# get forced sources by object ID, empty object list 

res = ppdb.getDiaForcedSources([], visit_time) 

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 = PpdbConfig(db_url="sqlite:///", 

isolation_level="READ_UNCOMMITTED", 

read_sources_months=12, 

read_forced_sources_months=12) 

ppdb = Ppdb(config) 

ppdb.makeSchema() 

 

pixel_ranges = _makePixelRanges() 

visit_time = datetime.datetime.now() 

 

# get objects by region 

res = ppdb.getDiaObjects(pixel_ranges) 

self._assertCatalog(res, 0) 

 

# get sources by region 

res = ppdb.getDiaSourcesInRegion(pixel_ranges, visit_time) 

self._assertCatalog(res, 0) 

 

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

res = ppdb.getDiaSources([], visit_time) 

self.assertIs(res, None) 

 

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

res = ppdb.getDiaSources([1, 2, 3], visit_time) 

self._assertCatalog(res, 0) 

 

# get forced sources by object ID, empty object list 

res = ppdb.getDiaForcedSources([], visit_time) 

self.assertIs(res, None) 

 

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

res = ppdb.getDiaForcedSources([1, 2, 3], visit_time) 

self._assertCatalog(res, 0) 

 

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 = PpdbConfig(db_url="sqlite:///", 

isolation_level="READ_UNCOMMITTED", 

dia_object_index="last_object_table") 

ppdb = Ppdb(config) 

ppdb.makeSchema() 

 

pixel_ranges = _makePixelRanges() 

 

# get objects by region 

res = ppdb.getDiaObjects(pixel_ranges) 

self._assertCatalog(res, 0) 

 

def test_storeObjectsBaseline(self): 

"""Store and retrieve DiaObjects.""" 

# don't care about sources. 

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

isolation_level="READ_UNCOMMITTED", 

dia_object_index="baseline") 

ppdb = Ppdb(config) 

ppdb.makeSchema() 

 

pixel_ranges = _makePixelRanges() 

visit_time = datetime.datetime.now() 

 

# make afw catalog with Objects 

catalog = _makeObjectCatalog(pixel_ranges) 

 

# store catalog 

ppdb.storeDiaObjects(catalog, visit_time) 

 

# read it back and check sizes 

res = ppdb.getDiaObjects(pixel_ranges) 

self._assertCatalog(res, len(catalog)) 

 

def test_storeObjectsLast(self): 

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

# don't care about sources. 

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

isolation_level="READ_UNCOMMITTED", 

dia_object_index="last_object_table", 

object_last_replace=True) 

ppdb = Ppdb(config) 

ppdb.makeSchema() 

 

pixel_ranges = _makePixelRanges() 

visit_time = datetime.datetime.now() 

 

# make afw catalog with Objects 

catalog = _makeObjectCatalog(pixel_ranges) 

 

# store catalog 

ppdb.storeDiaObjects(catalog, visit_time) 

 

# read it back and check sizes 

res = ppdb.getDiaObjects(pixel_ranges) 

self._assertCatalog(res, len(catalog)) 

 

def test_storeSources(self): 

"""Store and retrieve DiaSources.""" 

 

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

isolation_level="READ_UNCOMMITTED", 

read_sources_months=12, 

read_forced_sources_months=12) 

ppdb = Ppdb(config) 

ppdb.makeSchema() 

 

pixel_ranges = _makePixelRanges() 

visit_time = datetime.datetime.now() 

 

# have to store Objects first 

objects = _makeObjectCatalog(pixel_ranges) 

ppdb.storeDiaObjects(objects, visit_time) 

 

# 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']) 

 

# save them 

ppdb.storeDiaSources(catalog) 

 

# read it back and check sizes 

res = ppdb.getDiaSourcesInRegion(pixel_ranges, visit_time) 

self._assertCatalog(res, len(catalog)) 

 

# read it back using different method 

res = ppdb.getDiaSources(oids, visit_time) 

self._assertCatalog(res, len(catalog)) 

 

def test_storeForcedSources(self): 

"""Store and retrieve DiaForcedSources.""" 

 

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

isolation_level="READ_UNCOMMITTED", 

read_sources_months=12, 

read_forced_sources_months=12) 

ppdb = Ppdb(config) 

ppdb.makeSchema() 

 

pixel_ranges = _makePixelRanges() 

visit_time = datetime.datetime.now() 

 

# have to store Objects first 

objects = _makeObjectCatalog(pixel_ranges) 

ppdb.storeDiaObjects(objects, visit_time) 

 

# 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']) 

 

# save them 

ppdb.storeDiaForcedSources(catalog) 

 

# read it back and check sizes 

res = ppdb.getDiaForcedSources(oids, visit_time) 

self._assertCatalog(res, len(catalog)) 

 

 

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

pass 

 

 

def setup_module(module): 

lsst.utils.tests.init() 

 

 

334 ↛ 335line 334 didn't jump to line 335, because the condition on line 334 was never trueif __name__ == "__main__": 

lsst.utils.tests.init() 

unittest.main()