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# encoding: utf-8
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"""
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Tests for IPython.config.loader
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Authors:
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* Brian Granger
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* Fernando Perez (design help)
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"""
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#-----------------------------------------------------------------------------
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# Copyright (C) 2008-2011 The IPython Development Team
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#
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# Distributed under the terms of the BSD License. The full license is in
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# the file COPYING, distributed as part of this software.
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#-----------------------------------------------------------------------------
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#-----------------------------------------------------------------------------
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# Imports
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#-----------------------------------------------------------------------------
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import os
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import sys
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from tempfile import mkstemp
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from unittest import TestCase
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from nose import SkipTest
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from IPython.testing.tools import mute_warn
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from IPython.utils.traitlets import Unicode
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from IPython.config.configurable import Configurable
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from IPython.config.loader import (
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Config,
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PyFileConfigLoader,
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KeyValueConfigLoader,
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ArgParseConfigLoader,
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KVArgParseConfigLoader,
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ConfigError
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)
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#-----------------------------------------------------------------------------
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# Actual tests
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#-----------------------------------------------------------------------------
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pyfile = """
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c = get_config()
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c.a=10
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c.b=20
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c.Foo.Bar.value=10
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c.Foo.Bam.value=list(range(10)) # list() is just so it's the same on Python 3
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c.D.C.value='hi there'
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"""
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class TestPyFileCL(TestCase):
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def test_basic(self):
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fd, fname = mkstemp('.py')
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f = os.fdopen(fd, 'w')
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f.write(pyfile)
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f.close()
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# Unlink the file
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cl = PyFileConfigLoader(fname)
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config = cl.load_config()
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self.assertEqual(config.a, 10)
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self.assertEqual(config.b, 20)
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self.assertEqual(config.Foo.Bar.value, 10)
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self.assertEqual(config.Foo.Bam.value, range(10))
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self.assertEqual(config.D.C.value, 'hi there')
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class MyLoader1(ArgParseConfigLoader):
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def _add_arguments(self, aliases=None, flags=None):
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p = self.parser
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p.add_argument('-f', '--foo', dest='Global.foo', type=str)
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p.add_argument('-b', dest='MyClass.bar', type=int)
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p.add_argument('-n', dest='n', action='store_true')
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p.add_argument('Global.bam', type=str)
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class MyLoader2(ArgParseConfigLoader):
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def _add_arguments(self, aliases=None, flags=None):
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subparsers = self.parser.add_subparsers(dest='subparser_name')
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subparser1 = subparsers.add_parser('1')
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subparser1.add_argument('-x',dest='Global.x')
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subparser2 = subparsers.add_parser('2')
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subparser2.add_argument('y')
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class TestArgParseCL(TestCase):
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def test_basic(self):
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cl = MyLoader1()
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config = cl.load_config('-f hi -b 10 -n wow'.split())
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self.assertEqual(config.Global.foo, 'hi')
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self.assertEqual(config.MyClass.bar, 10)
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self.assertEqual(config.n, True)
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self.assertEqual(config.Global.bam, 'wow')
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config = cl.load_config(['wow'])
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self.assertEqual(config.keys(), ['Global'])
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self.assertEqual(config.Global.keys(), ['bam'])
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self.assertEqual(config.Global.bam, 'wow')
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def test_add_arguments(self):
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cl = MyLoader2()
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config = cl.load_config('2 frobble'.split())
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self.assertEqual(config.subparser_name, '2')
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self.assertEqual(config.y, 'frobble')
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config = cl.load_config('1 -x frobble'.split())
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self.assertEqual(config.subparser_name, '1')
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self.assertEqual(config.Global.x, 'frobble')
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def test_argv(self):
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cl = MyLoader1(argv='-f hi -b 10 -n wow'.split())
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config = cl.load_config()
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self.assertEqual(config.Global.foo, 'hi')
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self.assertEqual(config.MyClass.bar, 10)
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self.assertEqual(config.n, True)
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self.assertEqual(config.Global.bam, 'wow')
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class TestKeyValueCL(TestCase):
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klass = KeyValueConfigLoader
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def test_basic(self):
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cl = self.klass()
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argv = ['--'+s.strip('c.') for s in pyfile.split('\n')[2:-1]]
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with mute_warn():
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config = cl.load_config(argv)
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self.assertEqual(config.a, 10)
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self.assertEqual(config.b, 20)
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self.assertEqual(config.Foo.Bar.value, 10)
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self.assertEqual(config.Foo.Bam.value, range(10))
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self.assertEqual(config.D.C.value, 'hi there')
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def test_expanduser(self):
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cl = self.klass()
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argv = ['--a=~/1/2/3', '--b=~', '--c=~/', '--d="~/"']
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with mute_warn():
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config = cl.load_config(argv)
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self.assertEqual(config.a, os.path.expanduser('~/1/2/3'))
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self.assertEqual(config.b, os.path.expanduser('~'))
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self.assertEqual(config.c, os.path.expanduser('~/'))
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self.assertEqual(config.d, '~/')
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def test_extra_args(self):
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cl = self.klass()
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with mute_warn():
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config = cl.load_config(['--a=5', 'b', '--c=10', 'd'])
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self.assertEqual(cl.extra_args, ['b', 'd'])
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self.assertEqual(config.a, 5)
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self.assertEqual(config.c, 10)
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with mute_warn():
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config = cl.load_config(['--', '--a=5', '--c=10'])
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self.assertEqual(cl.extra_args, ['--a=5', '--c=10'])
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def test_unicode_args(self):
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cl = self.klass()
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argv = [u'--a=épsîlön']
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with mute_warn():
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config = cl.load_config(argv)
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self.assertEqual(config.a, u'épsîlön')
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def test_unicode_bytes_args(self):
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uarg = u'--a=é'
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try:
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barg = uarg.encode(sys.stdin.encoding)
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except (TypeError, UnicodeEncodeError):
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raise SkipTest("sys.stdin.encoding can't handle 'é'")
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cl = self.klass()
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with mute_warn():
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config = cl.load_config([barg])
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self.assertEqual(config.a, u'é')
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def test_unicode_alias(self):
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cl = self.klass()
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argv = [u'--a=épsîlön']
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with mute_warn():
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config = cl.load_config(argv, aliases=dict(a='A.a'))
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self.assertEqual(config.A.a, u'épsîlön')
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class TestArgParseKVCL(TestKeyValueCL):
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klass = KVArgParseConfigLoader
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def test_expanduser2(self):
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cl = self.klass()
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argv = ['-a', '~/1/2/3', '--b', "'~/1/2/3'"]
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with mute_warn():
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config = cl.load_config(argv, aliases=dict(a='A.a', b='A.b'))
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self.assertEqual(config.A.a, os.path.expanduser('~/1/2/3'))
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self.assertEqual(config.A.b, '~/1/2/3')
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def test_eval(self):
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cl = self.klass()
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argv = ['-c', 'a=5']
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with mute_warn():
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config = cl.load_config(argv, aliases=dict(c='A.c'))
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self.assertEqual(config.A.c, u"a=5")
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class TestConfig(TestCase):
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def test_setget(self):
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c = Config()
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c.a = 10
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self.assertEqual(c.a, 10)
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self.assertEqual('b' in c, False)
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def test_auto_section(self):
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c = Config()
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self.assertEqual('A' in c, True)
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self.assertEqual(c._has_section('A'), False)
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A = c.A
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A.foo = 'hi there'
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self.assertEqual(c._has_section('A'), True)
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self.assertEqual(c.A.foo, 'hi there')
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del c.A
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self.assertEqual(len(c.A.keys()),0)
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def test_merge_doesnt_exist(self):
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c1 = Config()
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c2 = Config()
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c2.bar = 10
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c2.Foo.bar = 10
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c1.merge(c2)
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self.assertEqual(c1.Foo.bar, 10)
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self.assertEqual(c1.bar, 10)
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c2.Bar.bar = 10
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c1.merge(c2)
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self.assertEqual(c1.Bar.bar, 10)
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def test_merge_exists(self):
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c1 = Config()
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c2 = Config()
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c1.Foo.bar = 10
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c1.Foo.bam = 30
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c2.Foo.bar = 20
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c2.Foo.wow = 40
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c1.merge(c2)
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self.assertEqual(c1.Foo.bam, 30)
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self.assertEqual(c1.Foo.bar, 20)
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self.assertEqual(c1.Foo.wow, 40)
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c2.Foo.Bam.bam = 10
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c1.merge(c2)
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self.assertEqual(c1.Foo.Bam.bam, 10)
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def test_deepcopy(self):
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c1 = Config()
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c1.Foo.bar = 10
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c1.Foo.bam = 30
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c1.a = 'asdf'
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c1.b = range(10)
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import copy
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c2 = copy.deepcopy(c1)
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self.assertEqual(c1, c2)
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self.assertTrue(c1 is not c2)
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self.assertTrue(c1.Foo is not c2.Foo)
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def test_builtin(self):
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c1 = Config()
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exec 'foo = True' in c1
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self.assertEqual(c1.foo, True)
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self.assertRaises(ConfigError, setattr, c1, 'ValueError', 10)
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def test_fromdict(self):
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c1 = Config({'Foo' : {'bar' : 1}})
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self.assertEqual(c1.Foo.__class__, Config)
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self.assertEqual(c1.Foo.bar, 1)
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def test_fromdictmerge(self):
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c1 = Config()
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c2 = Config({'Foo' : {'bar' : 1}})
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c1.merge(c2)
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self.assertEqual(c1.Foo.__class__, Config)
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self.assertEqual(c1.Foo.bar, 1)
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def test_fromdictmerge2(self):
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c1 = Config({'Foo' : {'baz' : 2}})
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c2 = Config({'Foo' : {'bar' : 1}})
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c1.merge(c2)
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self.assertEqual(c1.Foo.__class__, Config)
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self.assertEqual(c1.Foo.bar, 1)
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self.assertEqual(c1.Foo.baz, 2)
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self.assertRaises(AttributeError, getattr, c2.Foo, 'baz')
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