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test_configurable.py
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/ IPython / config / tests / test_configurable.py
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# encoding: utf-8
"""
Tests for IPython.config.configurable
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
#-----------------------------------------------------------------------------
from unittest import TestCase
from IPython.config.configurable import (
Configurable,
SingletonConfigurable
)
from IPython.utils.traitlets import (
Integer, Float, Unicode, List, Dict, Set,
)
from IPython.config.loader import Config
from IPython.utils.py3compat import PY3
#-----------------------------------------------------------------------------
# Test cases
#-----------------------------------------------------------------------------
class MyConfigurable(Configurable):
a = Integer(1, config=True, help="The integer a.")
b = Float(1.0, config=True, help="The integer b.")
c = Unicode('no config')
mc_help=u"""MyConfigurable options
----------------------
--MyConfigurable.a=<Integer>
Default: 1
The integer a.
--MyConfigurable.b=<Float>
Default: 1.0
The integer b."""
mc_help_inst=u"""MyConfigurable options
----------------------
--MyConfigurable.a=<Integer>
Current: 5
The integer a.
--MyConfigurable.b=<Float>
Current: 4.0
The integer b."""
# On Python 3, the Integer trait is a synonym for Int
if PY3:
mc_help = mc_help.replace(u"<Integer>", u"<Int>")
mc_help_inst = mc_help_inst.replace(u"<Integer>", u"<Int>")
class Foo(Configurable):
a = Integer(0, config=True, help="The integer a.")
b = Unicode('nope', config=True)
class Bar(Foo):
b = Unicode('gotit', config=False, help="The string b.")
c = Float(config=True, help="The string c.")
class TestConfigurable(TestCase):
def test_default(self):
c1 = Configurable()
c2 = Configurable(config=c1.config)
c3 = Configurable(config=c2.config)
self.assertEqual(c1.config, c2.config)
self.assertEqual(c2.config, c3.config)
def test_custom(self):
config = Config()
config.foo = 'foo'
config.bar = 'bar'
c1 = Configurable(config=config)
c2 = Configurable(config=c1.config)
c3 = Configurable(config=c2.config)
self.assertEqual(c1.config, config)
self.assertEqual(c2.config, config)
self.assertEqual(c3.config, config)
# Test that copies are not made
self.assertTrue(c1.config is config)
self.assertTrue(c2.config is config)
self.assertTrue(c3.config is config)
self.assertTrue(c1.config is c2.config)
self.assertTrue(c2.config is c3.config)
def test_inheritance(self):
config = Config()
config.MyConfigurable.a = 2
config.MyConfigurable.b = 2.0
c1 = MyConfigurable(config=config)
c2 = MyConfigurable(config=c1.config)
self.assertEqual(c1.a, config.MyConfigurable.a)
self.assertEqual(c1.b, config.MyConfigurable.b)
self.assertEqual(c2.a, config.MyConfigurable.a)
self.assertEqual(c2.b, config.MyConfigurable.b)
def test_parent(self):
config = Config()
config.Foo.a = 10
config.Foo.b = "wow"
config.Bar.b = 'later'
config.Bar.c = 100.0
f = Foo(config=config)
b = Bar(config=f.config)
self.assertEqual(f.a, 10)
self.assertEqual(f.b, 'wow')
self.assertEqual(b.b, 'gotit')
self.assertEqual(b.c, 100.0)
def test_override1(self):
config = Config()
config.MyConfigurable.a = 2
config.MyConfigurable.b = 2.0
c = MyConfigurable(a=3, config=config)
self.assertEqual(c.a, 3)
self.assertEqual(c.b, config.MyConfigurable.b)
self.assertEqual(c.c, 'no config')
def test_override2(self):
config = Config()
config.Foo.a = 1
config.Bar.b = 'or' # Up above b is config=False, so this won't do it.
config.Bar.c = 10.0
c = Bar(config=config)
self.assertEqual(c.a, config.Foo.a)
self.assertEqual(c.b, 'gotit')
self.assertEqual(c.c, config.Bar.c)
c = Bar(a=2, b='and', c=20.0, config=config)
self.assertEqual(c.a, 2)
self.assertEqual(c.b, 'and')
self.assertEqual(c.c, 20.0)
def test_help(self):
self.assertEqual(MyConfigurable.class_get_help(), mc_help)
def test_help_inst(self):
inst = MyConfigurable(a=5, b=4)
self.assertEqual(MyConfigurable.class_get_help(inst), mc_help_inst)
class TestSingletonConfigurable(TestCase):
def test_instance(self):
class Foo(SingletonConfigurable): pass
self.assertEqual(Foo.initialized(), False)
foo = Foo.instance()
self.assertEqual(Foo.initialized(), True)
self.assertEqual(foo, Foo.instance())
self.assertEqual(SingletonConfigurable._instance, None)
def test_inheritance(self):
class Bar(SingletonConfigurable): pass
class Bam(Bar): pass
self.assertEqual(Bar.initialized(), False)
self.assertEqual(Bam.initialized(), False)
bam = Bam.instance()
bam == Bar.instance()
self.assertEqual(Bar.initialized(), True)
self.assertEqual(Bam.initialized(), True)
self.assertEqual(bam, Bam._instance)
self.assertEqual(bam, Bar._instance)
self.assertEqual(SingletonConfigurable._instance, None)
class MyParent(Configurable):
pass
class MyParent2(MyParent):
pass
class TestParentConfigurable(TestCase):
def test_parent_config(self):
cfg = Config({
'MyParent' : {
'MyConfigurable' : {
'b' : 2.0,
}
}
})
parent = MyParent(config=cfg)
myc = MyConfigurable(parent=parent)
self.assertEqual(myc.b, parent.config.MyParent.MyConfigurable.b)
def test_parent_inheritance(self):
cfg = Config({
'MyParent' : {
'MyConfigurable' : {
'b' : 2.0,
}
}
})
parent = MyParent2(config=cfg)
myc = MyConfigurable(parent=parent)
self.assertEqual(myc.b, parent.config.MyParent.MyConfigurable.b)
def test_multi_parent(self):
cfg = Config({
'MyParent2' : {
'MyParent' : {
'MyConfigurable' : {
'b' : 2.0,
}
},
# this one shouldn't count
'MyConfigurable' : {
'b' : 3.0,
},
}
})
parent2 = MyParent2(config=cfg)
parent = MyParent(parent=parent2)
myc = MyConfigurable(parent=parent)
self.assertEqual(myc.b, parent.config.MyParent2.MyParent.MyConfigurable.b)
def test_parent_priority(self):
cfg = Config({
'MyConfigurable' : {
'b' : 2.0,
},
'MyParent' : {
'MyConfigurable' : {
'b' : 3.0,
}
},
'MyParent2' : {
'MyConfigurable' : {
'b' : 4.0,
}
}
})
parent = MyParent2(config=cfg)
myc = MyConfigurable(parent=parent)
self.assertEqual(myc.b, parent.config.MyParent2.MyConfigurable.b)
def test_multi_parent_priority(self):
cfg = Config({
'MyConfigurable' : {
'b' : 2.0,
},
'MyParent' : {
'MyConfigurable' : {
'b' : 3.0,
}
},
'MyParent2' : {
'MyConfigurable' : {
'b' : 4.0,
}
},
'MyParent2' : {
'MyParent' : {
'MyConfigurable' : {
'b' : 5.0,
}
}
}
})
parent2 = MyParent2(config=cfg)
parent = MyParent2(parent=parent2)
myc = MyConfigurable(parent=parent)
self.assertEqual(myc.b, parent.config.MyParent2.MyParent.MyConfigurable.b)
class Containers(Configurable):
lis = List(config=True)
def _lis_default(self):
return [-1]
s = Set(config=True)
def _s_default(self):
return {'a'}
d = Dict(config=True)
def _d_default(self):
return {'a' : 'b'}
class TestConfigContainers(TestCase):
def test_extend(self):
c = Config()
c.Containers.lis.extend(list(range(5)))
obj = Containers(config=c)
self.assertEqual(obj.lis, list(range(-1,5)))
def test_insert(self):
c = Config()
c.Containers.lis.insert(0, 'a')
c.Containers.lis.insert(1, 'b')
obj = Containers(config=c)
self.assertEqual(obj.lis, ['a', 'b', -1])
def test_prepend(self):
c = Config()
c.Containers.lis.prepend([1,2])
c.Containers.lis.prepend([2,3])
obj = Containers(config=c)
self.assertEqual(obj.lis, [2,3,1,2,-1])
def test_prepend_extend(self):
c = Config()
c.Containers.lis.prepend([1,2])
c.Containers.lis.extend([2,3])
obj = Containers(config=c)
self.assertEqual(obj.lis, [1,2,-1,2,3])
def test_append_extend(self):
c = Config()
c.Containers.lis.append([1,2])
c.Containers.lis.extend([2,3])
obj = Containers(config=c)
self.assertEqual(obj.lis, [-1,[1,2],2,3])
def test_extend_append(self):
c = Config()
c.Containers.lis.extend([2,3])
c.Containers.lis.append([1,2])
obj = Containers(config=c)
self.assertEqual(obj.lis, [-1,2,3,[1,2]])
def test_insert_extend(self):
c = Config()
c.Containers.lis.insert(0, 1)
c.Containers.lis.extend([2,3])
obj = Containers(config=c)
self.assertEqual(obj.lis, [1,-1,2,3])
def test_set_update(self):
c = Config()
c.Containers.s.update({0,1,2})
c.Containers.s.update({3})
obj = Containers(config=c)
self.assertEqual(obj.s, {'a', 0, 1, 2, 3})
def test_dict_update(self):
c = Config()
c.Containers.d.update({'c' : 'd'})
c.Containers.d.update({'e' : 'f'})
obj = Containers(config=c)
self.assertEqual(obj.d, {'a':'b', 'c':'d', 'e':'f'})
def test_update_twice(self):
c = Config()
c.MyConfigurable.a = 5
m = MyConfigurable(config=c)
self.assertEqual(m.a, 5)
c2 = Config()
c2.MyConfigurable.a = 10
m.update_config(c2)
self.assertEqual(m.a, 10)
c2.MyConfigurable.a = 15
m.update_config(c2)
self.assertEqual(m.a, 15)