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# encoding: utf-8
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"""Tests for IPython.config.loader"""
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# Copyright (c) IPython Development Team.
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# Distributed under the terms of the Modified BSD License.
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import os
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import pickle
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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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import nose.tools as nt
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from IPython.config.loader import (
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Config,
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LazyConfigValue,
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PyFileConfigLoader,
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JSONFileConfigLoader,
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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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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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json1file = """
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{
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"version": 1,
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"a": 10,
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"b": 20,
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"Foo": {
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"Bam": {
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"value": [ 0, 1, 2, 3, 4, 5, 6, 7, 8, 9 ]
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},
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"Bar": {
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"value": 10
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}
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},
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"D": {
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"C": {
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"value": "hi there"
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}
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}
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}
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"""
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# should not load
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json2file = """
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{
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"version": 2
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}
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"""
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import logging
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log = logging.getLogger('devnull')
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log.setLevel(0)
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class TestFileCL(TestCase):
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def _check_conf(self, 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, list(range(10)))
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self.assertEqual(config.D.C.value, 'hi there')
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def test_python(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, log=log)
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config = cl.load_config()
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self._check_conf(config)
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def test_json(self):
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fd, fname = mkstemp('.json')
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f = os.fdopen(fd, 'w')
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f.write(json1file)
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f.close()
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# Unlink the file
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cl = JSONFileConfigLoader(fname, log=log)
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config = cl.load_config()
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self._check_conf(config)
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def test_collision(self):
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a = Config()
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b = Config()
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self.assertEqual(a.collisions(b), {})
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a.A.trait1 = 1
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b.A.trait2 = 2
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self.assertEqual(a.collisions(b), {})
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b.A.trait1 = 1
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self.assertEqual(a.collisions(b), {})
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b.A.trait1 = 0
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self.assertEqual(a.collisions(b), {
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'A': {
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'trait1': "1 ignored, using 0",
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}
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})
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self.assertEqual(b.collisions(a), {
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'A': {
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'trait1': "0 ignored, using 1",
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}
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})
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a.A.trait2 = 3
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self.assertEqual(b.collisions(a), {
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'A': {
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'trait1': "0 ignored, using 1",
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'trait2': "2 ignored, using 3",
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}
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})
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def test_v2raise(self):
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fd, fname = mkstemp('.json')
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f = os.fdopen(fd, 'w')
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f.write(json2file)
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f.close()
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# Unlink the file
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cl = JSONFileConfigLoader(fname, log=log)
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with nt.assert_raises(ValueError):
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cl.load_config()
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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(list(config.keys()), ['Global'])
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self.assertEqual(list(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(log=log)
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argv = ['--'+s.strip('c.') for s in pyfile.split('\n')[2:-1]]
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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, list(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(log=log)
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argv = ['--a=~/1/2/3', '--b=~', '--c=~/', '--d="~/"']
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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(log=log)
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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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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(log=log)
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argv = [u'--a=épsîlön']
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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(log=log)
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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(log=log)
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argv = [u'--a=épsîlön']
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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(log=log)
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argv = ['-a', '~/1/2/3', '--b', "'~/1/2/3'"]
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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(log=log)
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argv = ['-c', 'a=5']
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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.assertNotIn('A', c)
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assert not c._has_section('A')
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A = c.A
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A.foo = 'hi there'
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self.assertIn('A', c)
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assert c._has_section('A')
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self.assertEqual(c.A.foo, 'hi there')
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del c.A
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self.assertEqual(c.A, Config())
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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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c1.format = "json"
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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.assertNotIn('baz', c2.Foo)
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def test_contains(self):
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c1 = Config({'Foo' : {'baz' : 2}})
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c2 = Config({'Foo' : {'bar' : 1}})
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self.assertIn('Foo', c1)
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self.assertIn('Foo.baz', c1)
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self.assertIn('Foo.bar', c2)
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self.assertNotIn('Foo.bar', c1)
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def test_pickle_config(self):
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cfg = Config()
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cfg.Foo.bar = 1
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pcfg = pickle.dumps(cfg)
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cfg2 = pickle.loads(pcfg)
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self.assertEqual(cfg2, cfg)
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def test_getattr_section(self):
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cfg = Config()
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self.assertNotIn('Foo', cfg)
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Foo = cfg.Foo
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assert isinstance(Foo, Config)
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self.assertIn('Foo', cfg)
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def test_getitem_section(self):
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cfg = Config()
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self.assertNotIn('Foo', cfg)
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Foo = cfg['Foo']
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assert isinstance(Foo, Config)
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self.assertIn('Foo', cfg)
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def test_getattr_not_section(self):
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cfg = Config()
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self.assertNotIn('foo', cfg)
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foo = cfg.foo
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assert isinstance(foo, LazyConfigValue)
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self.assertIn('foo', cfg)
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def test_getattr_private_missing(self):
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cfg = Config()
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self.assertNotIn('_repr_html_', cfg)
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with self.assertRaises(AttributeError):
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_ = cfg._repr_html_
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self.assertNotIn('_repr_html_', cfg)
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self.assertEqual(len(cfg), 0)
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def test_getitem_not_section(self):
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cfg = Config()
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self.assertNotIn('foo', cfg)
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foo = cfg['foo']
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assert isinstance(foo, LazyConfigValue)
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self.assertIn('foo', cfg)
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def test_merge_copies(self):
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c = Config()
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c2 = Config()
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c2.Foo.trait = []
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c.merge(c2)
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c2.Foo.trait.append(1)
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self.assertIsNot(c.Foo, c2.Foo)
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self.assertEqual(c.Foo.trait, [])
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self.assertEqual(c2.Foo.trait, [1])
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