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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 os 

import contextlib 

import collections 

 

from lsst.daf.butler import ConfigSubset, Config 

 

 

@contextlib.contextmanager 

def modified_environment(**environ): 

""" 

Temporarily set environment variables. 

 

>>> with modified_environment(DAF_BUTLER_DIR="/somewhere"): 

... os.environ["DAF_BUTLER_DIR"] == "/somewhere" 

True 

 

>>> "DAF_BUTLER_DIR" != "/somewhere" 

True 

 

Parameters 

---------- 

environ : `dict` 

Key value pairs of environment variables to temporarily set. 

""" 

old_environ = dict(os.environ) 

os.environ.update(environ) 

try: 

yield 

finally: 

os.environ.clear() 

os.environ.update(old_environ) 

 

 

class ExampleWithConfigFileReference: 

defaultConfigFile = "viacls.yaml" 

 

 

class ExampleWithConfigFileReference2: 

defaultConfigFile = "viacls2.yaml" 

 

 

class ConfigTest(ConfigSubset): 

component = "comp" 

requiredKeys = ("item1", "item2") 

defaultConfigFile = "testconfig.yaml" 

 

 

class ConfigTestEmpty(ConfigTest): 

defaultConfigFile = "testconfig_empty.yaml" 

requiredKeys = () 

 

 

class ConfigTestButlerDir(ConfigTest): 

defaultConfigFile = "testConfigs/testconfig.yaml" 

 

 

class ConfigTestNoDefaults(ConfigTest): 

defaultConfigFile = None 

requiredKeys = () 

 

 

class ConfigTestAbsPath(ConfigTest): 

defaultConfigFile = None 

requiredKeys = () 

 

 

class ConfigTestCls(ConfigTest): 

defaultConfigFile = "withcls.yaml" 

 

 

class ConfigTestCase(unittest.TestCase): 

"""Tests of simple Config""" 

 

def testBadConfig(self): 

for badArg in ([], "file.fits"): 

with self.assertRaises(RuntimeError): 

Config(badArg) 

 

def testOperators(self): 

c1 = Config({"a": {"b": 1}, "c": 2}) 

c2 = c1.copy() 

self.assertEqual(c1, c2) 

c2["a.b"] = 5 

self.assertNotEqual(c1, c2) 

 

def testUpdate(self): 

c = Config({"a": {"b": 1}}) 

c.update({"a": {"c": 2}}) 

self.assertEqual(c["a.b"], 1) 

self.assertEqual(c["a.c"], 2) 

c.update({"a": {"d": [3, 4]}}) 

self.assertEqual(c["a.d.0"], 3) 

c.update({"z": [5, 6, {"g": 2, "h": 3}]}) 

self.assertEqual(c["z.1"], 6) 

 

# This is detached from parent 

c2 = c["z.2"] 

self.assertEqual(c2["g"], 2) 

c2.update({"h": 4, "j": 5}) 

self.assertEqual(c2["h"], 4) 

self.assertNotIn("z.2.j", c) 

self.assertNotEqual(c["z.2.h"], 4) 

 

with self.assertRaises(RuntimeError): 

c.update([1, 2, 3]) 

 

def testHierarchy(self): 

c = Config() 

 

# Simple dict 

c["a"] = {"z": 52, "x": "string"} 

self.assertIn("a.z", c) 

self.assertEqual(c["a.x"], "string") 

 

c["b.new.thing1"] = "thing1" 

c["b.new.thing2"] = "thing2" 

c["b.new.thing3.supp"] = "supplemental" 

self.assertEqual(c["b.new.thing1"], "thing1") 

tmp = c["b.new"] 

self.assertEqual(tmp["thing2"], "thing2") 

self.assertEqual(c["b.new.thing3.supp"], "supplemental") 

 

# Test that we can index into lists 

c["a.b.c"] = [1, "7", 3, {"1": 4, "5": "Five"}, "hello"] 

self.assertIn("a.b.c.3.5", c) 

self.assertNotIn("a.b.c.10", c) 

self.assertNotIn("a.b.c.10.d", c) 

self.assertEqual(c["a.b.c.3.5"], "Five") 

# Is the value in the list? 

self.assertIn("a.b.c.hello", c) 

self.assertNotIn("a.b.c.hello.not", c) 

 

# And assign to an element in the list 

self.assertEqual(c["a.b.c.1"], "7") 

c["a.b.c.1"] = 8 

self.assertEqual(c["a.b.c.1"], 8) 

self.assertIsInstance(c["a.b.c"], collections.Sequence) 

 

# Test we do get lists back from asArray 

a = c.asArray("a.b.c") 

self.assertIsInstance(a, list) 

 

# Is it the *same* list as in the config 

a.append("Sentinel") 

self.assertIn("Sentinel", c["a.b.c"]) 

self.assertIn("a.b.c.Sentinel", c) 

 

# Test we always get a list 

for k in c.names(): 

a = c.asArray(k) 

self.assertIsInstance(a, list) 

 

# Check we get the same top level keys 

self.assertEqual(set(c.names(topLevelOnly=True)), set(c.data.keys())) 

 

# Check that lists still work even if assigned a dict 

c = Config({"cls": "lsst.daf.butler", 

"datastores": [{"datastore": {"cls": "datastore1"}}, 

{"datastore": {"cls": "datastore2"}}]}) 

c["datastores.1.datastore"] = {"cls": "datastore2modified"} 

self.assertEqual(c["datastores.0.datastore.cls"], "datastore1") 

self.assertEqual(c["datastores.1.datastore.cls"], "datastore2modified") 

self.assertIsInstance(c["datastores"], collections.Sequence) 

 

# Test that we can get all the listed names. 

# and also that they are marked as "in" the Config 

# Two distinct loops 

for n in c.names(): 

val = c[n] 

self.assertIsNotNone(val) 

self.assertIn(n, c) 

 

 

class ConfigSubsetTestCase(unittest.TestCase): 

"""Tests for ConfigSubset 

""" 

 

def setUp(self): 

self.testDir = os.path.abspath(os.path.dirname(__file__)) 

self.configDir = os.path.join(self.testDir, "config", "testConfigs") 

self.configDir2 = os.path.join(self.testDir, "config", "testConfigs", "test2") 

 

def testEmpty(self): 

"""Ensure that we can read an empty file.""" 

c = ConfigTestEmpty(searchPaths=(self.configDir,)) 

self.assertIsInstance(c, ConfigSubset) 

 

def testDefaults(self): 

"""Read of defaults""" 

 

# Supply the search path explicitly 

c = ConfigTest(searchPaths=(self.configDir,)) 

self.assertIsInstance(c, ConfigSubset) 

self.assertIn("item3", c) 

self.assertEqual(c["item3"], 3) 

 

# Use environment 

with modified_environment(DAF_BUTLER_CONFIG_PATH=self.configDir): 

c = ConfigTest() 

self.assertIsInstance(c, ConfigSubset) 

self.assertEqual(c["item3"], 3) 

 

# No default so this should fail 

with self.assertRaises(KeyError): 

c = ConfigTest() 

 

def testButlerDir(self): 

"""Test that DAF_BUTLER_DIR is used to locate files.""" 

# with modified_environment(DAF_BUTLER_DIR=self.testDir): 

# c = ConfigTestButlerDir() 

# self.assertIn("item3", c) 

 

# Again with a search path 

with modified_environment(DAF_BUTLER_DIR=self.testDir, 

DAF_BUTLER_CONFIG_PATH=self.configDir2): 

c = ConfigTestButlerDir() 

self.assertIn("item3", c) 

self.assertEqual(c["item3"], "override") 

self.assertEqual(c["item4"], "new") 

 

def testExternalOverride(self): 

"""Ensure that external values win""" 

c = ConfigTest({"item3": "newval"}, searchPaths=(self.configDir,)) 

self.assertIn("item3", c) 

self.assertEqual(c["item3"], "newval") 

 

def testSearchPaths(self): 

"""Two search paths""" 

c = ConfigTest(searchPaths=(self.configDir2, self.configDir)) 

self.assertIsInstance(c, ConfigSubset) 

self.assertIn("item3", c) 

self.assertEqual(c["item3"], "override") 

self.assertEqual(c["item4"], "new") 

 

c = ConfigTest(searchPaths=(self.configDir, self.configDir2)) 

self.assertIsInstance(c, ConfigSubset) 

self.assertIn("item3", c) 

self.assertEqual(c["item3"], 3) 

self.assertEqual(c["item4"], "new") 

 

def testExternalHierarchy(self): 

"""Test that we can provide external config parameters in hierarchy""" 

c = ConfigTest({"comp": {"item1": 6, "item2": "a", "a": "b", 

"item3": 7}, "item4": 8}) 

self.assertIn("a", c) 

self.assertEqual(c["a"], "b") 

self.assertNotIn("item4", c) 

 

def testNoDefaults(self): 

"""Ensure that defaults can be turned off.""" 

 

# Mandatory keys but no defaults 

c = ConfigTest({"item1": "a", "item2": "b", "item6": 6}) 

self.assertEqual(len(c.filesRead), 0) 

self.assertIn("item1", c) 

self.assertEqual(c["item6"], 6) 

 

c = ConfigTestNoDefaults() 

self.assertEqual(len(c.filesRead), 0) 

 

def testAbsPath(self): 

"""Read default config from an absolute path""" 

# Force the path to be absolute in the class 

ConfigTestAbsPath.defaultConfigFile = os.path.join(self.configDir, "abspath.yaml") 

c = ConfigTestAbsPath() 

self.assertEqual(c["item11"], "eleventh") 

self.assertEqual(len(c.filesRead), 1) 

 

# Now specify the normal config file with an absolute path 

ConfigTestAbsPath.defaultConfigFile = os.path.join(self.configDir, ConfigTest.defaultConfigFile) 

c = ConfigTestAbsPath() 

self.assertEqual(c["item11"], 11) 

self.assertEqual(len(c.filesRead), 1) 

 

# and a search path that will also include the file 

c = ConfigTestAbsPath(searchPaths=(self.configDir, self.configDir2,)) 

self.assertEqual(c["item11"], 11) 

self.assertEqual(len(c.filesRead), 1) 

 

# Same as above but this time with relative path and two search paths 

# to ensure the count changes 

ConfigTestAbsPath.defaultConfigFile = ConfigTest.defaultConfigFile 

c = ConfigTestAbsPath(searchPaths=(self.configDir, self.configDir2,)) 

self.assertEqual(len(c.filesRead), 2) 

 

# Reset the class 

ConfigTestAbsPath.defaultConfigFile = None 

 

def testClassDerived(self): 

"""Read config specified in class determined from config""" 

c = ConfigTestCls(searchPaths=(self.configDir,)) 

self.assertEqual(c["item50"], 50) 

self.assertEqual(c["help"], "derived") 

 

# Same thing but additional search path 

c = ConfigTestCls(searchPaths=(self.configDir, self.configDir2)) 

self.assertEqual(c["item50"], 50) 

self.assertEqual(c["help"], "derived") 

self.assertEqual(c["help2"], "second") 

 

# Same thing but reverse the two paths 

c = ConfigTestCls(searchPaths=(self.configDir2, self.configDir)) 

self.assertEqual(c["item50"], 500) 

self.assertEqual(c["help"], "class") 

self.assertEqual(c["help2"], "second") 

self.assertEqual(c["help3"], "third") 

 

def testInclude(self): 

"""Read a config that has an include directive""" 

c = Config(os.path.join(self.configDir, "testinclude.yaml")) 

self.assertEqual(c["comp1.item1"], 58) 

self.assertEqual(c["comp2.comp.item1"], 1) 

self.assertEqual(c["comp3.1.comp.item1"], "posix") 

self.assertEqual(c["comp4.0.comp.item1"], "posix") 

self.assertEqual(c["comp4.1.comp.item1"], 1) 

self.assertEqual(c["comp5.comp6.comp.item1"], "posix") 

 

# Test a specific name and then test that all 

# returned names are "in" the config. 

names = c.names() 

self.assertIn("comp3.1.comp.item1", names) 

for n in names: 

self.assertIn(n, names) 

 

 

348 ↛ 349line 348 didn't jump to line 349, because the condition on line 348 was never trueif __name__ == "__main__": 

unittest.main()