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# 

# LSST Data Management System 

# Copyright 2008, 2009, 2010 LSST Corporation. 

# 

# This product includes software developed by the 

# LSST Project (http://www.lsst.org/). 

# 

# 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 LSST License Statement and 

# the GNU General Public License along with this program. If not, 

# see <http://www.lsstcorp.org/LegalNotices/>. 

# 

 

from __future__ import absolute_import 

 

import os 

import shutil 

import unittest 

import tempfile 

import lsst.utils.tests 

 

import lsst.daf.persistence as dafPersist 

import lsst.daf.base as dafBase 

 

from testLib import isValidDateTime, TypeWithProxy, TypeWithoutProxy 

 

# Define the root of the tests relative to this file 

ROOT = os.path.abspath(os.path.dirname(__file__)) 

 

 

class ButlerProxyTestCase(unittest.TestCase): 

"""A test case for the data butler finding a Mapper in a root""" 

 

inputDir = os.path.join(ROOT, 'root') 

 

def setUp(self): 

self.outputDir = tempfile.mkdtemp(dir=ROOT, prefix='ButlerProxyTestCase-') 

self.butler = dafPersist.Butler(self.inputDir, 

outPath=os.path.join(self.outputDir, "proxyOut")) 

 

def tearDown(self): 

del self.butler 

if os.path.exists(self.outputDir): 

shutil.rmtree(self.outputDir) 

 

def testCheckProxy(self): 

"""Attempt to cycle a DateTime object through the butler 

""" 

dt = dafBase.DateTime.now() 

self.butler.put(dt, "dt", ccd=1) 

 

# The next two types should not be castable to a DateTime object 

# when the proxy is passed to a function 

p1 = TypeWithoutProxy() 

self.butler.put(p1, "p1", ccd=1) 

 

p2 = TypeWithProxy() 

self.butler.put(p2, "p2", ccd=1) 

 

# First try with immediate read, this should obviously work 

dt = self.butler.get("dt", ccd=1, immediate=True) 

self.assertIsInstance(dt, dafBase.DateTime) 

self.assertTrue(isValidDateTime(dt)) 

 

# Now try again with lazy read 

dt = self.butler.get("dt", ccd=1, immediate=False) 

self.assertIsInstance(dt, dafPersist.readProxy.ReadProxy) 

self.assertTrue(isValidDateTime(dt)) 

 

# Now try with a type for which a proxy is not registered 

p1 = self.butler.get("p1", ccd=1, immediate=True) 

self.assertIsInstance(p1, TypeWithoutProxy) 

with self.assertRaises(TypeError): 

isValidDateTime(p1) 

 

# Now try with a type for which a proxy was registered but 

# that cannot convert to a DateTime 

p2 = self.butler.get("p2", ccd=1, immediate=True) 

self.assertIsInstance(p2, TypeWithProxy) 

with self.assertRaises(TypeError): 

isValidDateTime(p2) 

 

# Finally try with an invalid DateTime 

dt = dafBase.DateTime() 

self.butler.put(dt, "dt", ccd=1) 

 

dt = self.butler.get("dt", ccd=1, immediate=False) 

self.assertIsInstance(dt, dafPersist.readProxy.ReadProxy) 

self.assertFalse(isValidDateTime(dt)) 

 

 

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

pass 

 

 

def setup_module(module): 

lsst.utils.tests.init() 

 

 

109 ↛ 110line 109 didn't jump to line 110, because the condition on line 109 was never trueif __name__ == "__main__": 

lsst.utils.tests.init() 

unittest.main()