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# This file is part of daf_butler. 

# 

# 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/>. 

 

import unittest 

 

import lsst.utils.tests 

 

from lsst.daf.butler.core.utils import iterable, getFullTypeName, Singleton 

from lsst.daf.butler.core.formatter import Formatter 

from lsst.daf.butler import StorageClass 

 

 

class IterableTestCase(lsst.utils.tests.TestCase): 

"""Tests for `iterable` helper. 

""" 

 

def testNonIterable(self): 

self.assertEqual(list(iterable(0)), [0, ]) 

 

def testString(self): 

self.assertEqual(list(iterable("hello")), ["hello", ]) 

 

def testIterableNoString(self): 

self.assertEqual(list(iterable([0, 1, 2])), [0, 1, 2]) 

self.assertEqual(list(iterable(["hello", "world"])), ["hello", "world"]) 

 

 

class SingletonTestCase(lsst.utils.tests.TestCase): 

"""Tests of the Singleton metaclass""" 

 

class IsSingleton(metaclass=Singleton): 

def __init__(self): 

self.data = {} 

self.id = 0 

 

class IsBadSingleton(IsSingleton): 

def __init__(self, arg): 

"""A singleton can not accept any arguments.""" 

self.arg = arg 

 

class IsSingletonSubclass(IsSingleton): 

def __init__(self): 

super().__init__() 

 

def testSingleton(self): 

one = SingletonTestCase.IsSingleton() 

two = SingletonTestCase.IsSingleton() 

 

# Now update the first one and check the second 

one.data["test"] = 52 

self.assertEqual(one.data, two.data) 

two.id += 1 

self.assertEqual(one.id, two.id) 

 

three = SingletonTestCase.IsSingletonSubclass() 

self.assertNotEqual(one.id, three.id) 

 

with self.assertRaises(TypeError): 

SingletonTestCase.IsBadSingleton(52) 

 

 

class TestButlerUtils(lsst.utils.tests.TestCase): 

"""Tests of the simple utilities.""" 

 

def testTypeNames(self): 

# Check types and also an object 

tests = [(Formatter, "lsst.daf.butler.core.formatter.Formatter"), 

(int, "builtins.int"), 

(StorageClass, "lsst.daf.butler.core.storageClass.StorageClass"), 

(StorageClass(None), "lsst.daf.butler.core.storageClass.StorageClass")] 

 

for item, typeName in tests: 

self.assertEqual(getFullTypeName(item), typeName) 

 

 

94 ↛ 95line 94 didn't jump to line 95, because the condition on line 94 was never trueif __name__ == "__main__": 

unittest.main()