##// END OF EJS Templates
Backport PR #2261: Fix: longest_substr([]) -> ''...
Backport PR #2261: Fix: longest_substr([]) -> '' Previously the algorithm used to find the longest common starting substring unintentionally raised an error when it was called on an empty list. This should fix the issue of an error being raised when running %paste on an empty clipboard (#2252).

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test_loader.py
263 lines | 8.3 KiB | text/x-python | PythonLexer
# encoding: utf-8
"""
Tests for IPython.config.loader
Authors:
* Brian Granger
* Fernando Perez (design help)
"""
#-----------------------------------------------------------------------------
# Copyright (C) 2008-2011 The IPython Development Team
#
# Distributed under the terms of the BSD License. The full license is in
# the file COPYING, distributed as part of this software.
#-----------------------------------------------------------------------------
#-----------------------------------------------------------------------------
# Imports
#-----------------------------------------------------------------------------
import os
import sys
from tempfile import mkstemp
from unittest import TestCase
from nose import SkipTest
from IPython.testing.tools import mute_warn
from IPython.utils.traitlets import Unicode
from IPython.config.configurable import Configurable
from IPython.config.loader import (
Config,
PyFileConfigLoader,
KeyValueConfigLoader,
ArgParseConfigLoader,
KVArgParseConfigLoader,
ConfigError
)
#-----------------------------------------------------------------------------
# Actual tests
#-----------------------------------------------------------------------------
pyfile = """
c = get_config()
c.a=10
c.b=20
c.Foo.Bar.value=10
c.Foo.Bam.value=list(range(10)) # list() is just so it's the same on Python 3
c.D.C.value='hi there'
"""
class TestPyFileCL(TestCase):
def test_basic(self):
fd, fname = mkstemp('.py')
f = os.fdopen(fd, 'w')
f.write(pyfile)
f.close()
# Unlink the file
cl = PyFileConfigLoader(fname)
config = cl.load_config()
self.assertEquals(config.a, 10)
self.assertEquals(config.b, 20)
self.assertEquals(config.Foo.Bar.value, 10)
self.assertEquals(config.Foo.Bam.value, range(10))
self.assertEquals(config.D.C.value, 'hi there')
class MyLoader1(ArgParseConfigLoader):
def _add_arguments(self, aliases=None, flags=None):
p = self.parser
p.add_argument('-f', '--foo', dest='Global.foo', type=str)
p.add_argument('-b', dest='MyClass.bar', type=int)
p.add_argument('-n', dest='n', action='store_true')
p.add_argument('Global.bam', type=str)
class MyLoader2(ArgParseConfigLoader):
def _add_arguments(self, aliases=None, flags=None):
subparsers = self.parser.add_subparsers(dest='subparser_name')
subparser1 = subparsers.add_parser('1')
subparser1.add_argument('-x',dest='Global.x')
subparser2 = subparsers.add_parser('2')
subparser2.add_argument('y')
class TestArgParseCL(TestCase):
def test_basic(self):
cl = MyLoader1()
config = cl.load_config('-f hi -b 10 -n wow'.split())
self.assertEquals(config.Global.foo, 'hi')
self.assertEquals(config.MyClass.bar, 10)
self.assertEquals(config.n, True)
self.assertEquals(config.Global.bam, 'wow')
config = cl.load_config(['wow'])
self.assertEquals(config.keys(), ['Global'])
self.assertEquals(config.Global.keys(), ['bam'])
self.assertEquals(config.Global.bam, 'wow')
def test_add_arguments(self):
cl = MyLoader2()
config = cl.load_config('2 frobble'.split())
self.assertEquals(config.subparser_name, '2')
self.assertEquals(config.y, 'frobble')
config = cl.load_config('1 -x frobble'.split())
self.assertEquals(config.subparser_name, '1')
self.assertEquals(config.Global.x, 'frobble')
def test_argv(self):
cl = MyLoader1(argv='-f hi -b 10 -n wow'.split())
config = cl.load_config()
self.assertEquals(config.Global.foo, 'hi')
self.assertEquals(config.MyClass.bar, 10)
self.assertEquals(config.n, True)
self.assertEquals(config.Global.bam, 'wow')
class TestKeyValueCL(TestCase):
klass = KeyValueConfigLoader
def test_basic(self):
cl = self.klass()
argv = ['--'+s.strip('c.') for s in pyfile.split('\n')[2:-1]]
with mute_warn():
config = cl.load_config(argv)
self.assertEquals(config.a, 10)
self.assertEquals(config.b, 20)
self.assertEquals(config.Foo.Bar.value, 10)
self.assertEquals(config.Foo.Bam.value, range(10))
self.assertEquals(config.D.C.value, 'hi there')
def test_expanduser(self):
cl = self.klass()
argv = ['--a=~/1/2/3', '--b=~', '--c=~/', '--d="~/"']
with mute_warn():
config = cl.load_config(argv)
self.assertEquals(config.a, os.path.expanduser('~/1/2/3'))
self.assertEquals(config.b, os.path.expanduser('~'))
self.assertEquals(config.c, os.path.expanduser('~/'))
self.assertEquals(config.d, '~/')
def test_extra_args(self):
cl = self.klass()
with mute_warn():
config = cl.load_config(['--a=5', 'b', '--c=10', 'd'])
self.assertEquals(cl.extra_args, ['b', 'd'])
self.assertEquals(config.a, 5)
self.assertEquals(config.c, 10)
with mute_warn():
config = cl.load_config(['--', '--a=5', '--c=10'])
self.assertEquals(cl.extra_args, ['--a=5', '--c=10'])
def test_unicode_args(self):
cl = self.klass()
argv = [u'--a=épsîlön']
with mute_warn():
config = cl.load_config(argv)
self.assertEquals(config.a, u'épsîlön')
def test_unicode_bytes_args(self):
uarg = u'--a=é'
try:
barg = uarg.encode(sys.stdin.encoding)
except (TypeError, UnicodeEncodeError):
raise SkipTest("sys.stdin.encoding can't handle 'é'")
cl = self.klass()
with mute_warn():
config = cl.load_config([barg])
self.assertEquals(config.a, u'é')
def test_unicode_alias(self):
cl = self.klass()
argv = [u'--a=épsîlön']
with mute_warn():
config = cl.load_config(argv, aliases=dict(a='A.a'))
self.assertEquals(config.A.a, u'épsîlön')
class TestArgParseKVCL(TestKeyValueCL):
klass = KVArgParseConfigLoader
def test_expanduser2(self):
cl = self.klass()
argv = ['-a', '~/1/2/3', '--b', "'~/1/2/3'"]
with mute_warn():
config = cl.load_config(argv, aliases=dict(a='A.a', b='A.b'))
self.assertEquals(config.A.a, os.path.expanduser('~/1/2/3'))
self.assertEquals(config.A.b, '~/1/2/3')
def test_eval(self):
cl = self.klass()
argv = ['-c', 'a=5']
with mute_warn():
config = cl.load_config(argv, aliases=dict(c='A.c'))
self.assertEquals(config.A.c, u"a=5")
class TestConfig(TestCase):
def test_setget(self):
c = Config()
c.a = 10
self.assertEquals(c.a, 10)
self.assertEquals(c.has_key('b'), False)
def test_auto_section(self):
c = Config()
self.assertEquals(c.has_key('A'), True)
self.assertEquals(c._has_section('A'), False)
A = c.A
A.foo = 'hi there'
self.assertEquals(c._has_section('A'), True)
self.assertEquals(c.A.foo, 'hi there')
del c.A
self.assertEquals(len(c.A.keys()),0)
def test_merge_doesnt_exist(self):
c1 = Config()
c2 = Config()
c2.bar = 10
c2.Foo.bar = 10
c1._merge(c2)
self.assertEquals(c1.Foo.bar, 10)
self.assertEquals(c1.bar, 10)
c2.Bar.bar = 10
c1._merge(c2)
self.assertEquals(c1.Bar.bar, 10)
def test_merge_exists(self):
c1 = Config()
c2 = Config()
c1.Foo.bar = 10
c1.Foo.bam = 30
c2.Foo.bar = 20
c2.Foo.wow = 40
c1._merge(c2)
self.assertEquals(c1.Foo.bam, 30)
self.assertEquals(c1.Foo.bar, 20)
self.assertEquals(c1.Foo.wow, 40)
c2.Foo.Bam.bam = 10
c1._merge(c2)
self.assertEquals(c1.Foo.Bam.bam, 10)
def test_deepcopy(self):
c1 = Config()
c1.Foo.bar = 10
c1.Foo.bam = 30
c1.a = 'asdf'
c1.b = range(10)
import copy
c2 = copy.deepcopy(c1)
self.assertEquals(c1, c2)
self.assert_(c1 is not c2)
self.assert_(c1.Foo is not c2.Foo)
def test_builtin(self):
c1 = Config()
exec 'foo = True' in c1
self.assertEquals(c1.foo, True)
self.assertRaises(ConfigError, setattr, c1, 'ValueError', 10)