|
|
# encoding: utf-8
|
|
|
"""
|
|
|
Tests for IPython.utils.traitlets.
|
|
|
|
|
|
Authors:
|
|
|
|
|
|
* Brian Granger
|
|
|
* Enthought, Inc. Some of the code in this file comes from enthought.traits
|
|
|
and is licensed under the BSD license. Also, many of the ideas also come
|
|
|
from enthought.traits even though our implementation is very different.
|
|
|
"""
|
|
|
|
|
|
#-----------------------------------------------------------------------------
|
|
|
# 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 re
|
|
|
import sys
|
|
|
from unittest import TestCase
|
|
|
|
|
|
import nose.tools as nt
|
|
|
from nose import SkipTest
|
|
|
|
|
|
from IPython.utils.traitlets import (
|
|
|
HasTraits, MetaHasTraits, TraitType, Any, CBytes, Dict,
|
|
|
Int, Long, Integer, Float, Complex, Bytes, Unicode, TraitError,
|
|
|
Undefined, Type, This, Instance, TCPAddress, List, Tuple,
|
|
|
ObjectName, DottedObjectName, CRegExp, bind
|
|
|
)
|
|
|
from IPython.utils import py3compat
|
|
|
from IPython.testing.decorators import skipif
|
|
|
|
|
|
#-----------------------------------------------------------------------------
|
|
|
# Helper classes for testing
|
|
|
#-----------------------------------------------------------------------------
|
|
|
|
|
|
|
|
|
class HasTraitsStub(HasTraits):
|
|
|
|
|
|
def _notify_trait(self, name, old, new):
|
|
|
self._notify_name = name
|
|
|
self._notify_old = old
|
|
|
self._notify_new = new
|
|
|
|
|
|
|
|
|
#-----------------------------------------------------------------------------
|
|
|
# Test classes
|
|
|
#-----------------------------------------------------------------------------
|
|
|
|
|
|
|
|
|
class TestTraitType(TestCase):
|
|
|
|
|
|
def test_get_undefined(self):
|
|
|
class A(HasTraits):
|
|
|
a = TraitType
|
|
|
a = A()
|
|
|
self.assertEqual(a.a, Undefined)
|
|
|
|
|
|
def test_set(self):
|
|
|
class A(HasTraitsStub):
|
|
|
a = TraitType
|
|
|
|
|
|
a = A()
|
|
|
a.a = 10
|
|
|
self.assertEqual(a.a, 10)
|
|
|
self.assertEqual(a._notify_name, 'a')
|
|
|
self.assertEqual(a._notify_old, Undefined)
|
|
|
self.assertEqual(a._notify_new, 10)
|
|
|
|
|
|
def test_validate(self):
|
|
|
class MyTT(TraitType):
|
|
|
def validate(self, inst, value):
|
|
|
return -1
|
|
|
class A(HasTraitsStub):
|
|
|
tt = MyTT
|
|
|
|
|
|
a = A()
|
|
|
a.tt = 10
|
|
|
self.assertEqual(a.tt, -1)
|
|
|
|
|
|
def test_default_validate(self):
|
|
|
class MyIntTT(TraitType):
|
|
|
def validate(self, obj, value):
|
|
|
if isinstance(value, int):
|
|
|
return value
|
|
|
self.error(obj, value)
|
|
|
class A(HasTraits):
|
|
|
tt = MyIntTT(10)
|
|
|
a = A()
|
|
|
self.assertEqual(a.tt, 10)
|
|
|
|
|
|
# Defaults are validated when the HasTraits is instantiated
|
|
|
class B(HasTraits):
|
|
|
tt = MyIntTT('bad default')
|
|
|
self.assertRaises(TraitError, B)
|
|
|
|
|
|
def test_is_valid_for(self):
|
|
|
class MyTT(TraitType):
|
|
|
def is_valid_for(self, value):
|
|
|
return True
|
|
|
class A(HasTraits):
|
|
|
tt = MyTT
|
|
|
|
|
|
a = A()
|
|
|
a.tt = 10
|
|
|
self.assertEqual(a.tt, 10)
|
|
|
|
|
|
def test_value_for(self):
|
|
|
class MyTT(TraitType):
|
|
|
def value_for(self, value):
|
|
|
return 20
|
|
|
class A(HasTraits):
|
|
|
tt = MyTT
|
|
|
|
|
|
a = A()
|
|
|
a.tt = 10
|
|
|
self.assertEqual(a.tt, 20)
|
|
|
|
|
|
def test_info(self):
|
|
|
class A(HasTraits):
|
|
|
tt = TraitType
|
|
|
a = A()
|
|
|
self.assertEqual(A.tt.info(), 'any value')
|
|
|
|
|
|
def test_error(self):
|
|
|
class A(HasTraits):
|
|
|
tt = TraitType
|
|
|
a = A()
|
|
|
self.assertRaises(TraitError, A.tt.error, a, 10)
|
|
|
|
|
|
def test_dynamic_initializer(self):
|
|
|
class A(HasTraits):
|
|
|
x = Int(10)
|
|
|
def _x_default(self):
|
|
|
return 11
|
|
|
class B(A):
|
|
|
x = Int(20)
|
|
|
class C(A):
|
|
|
def _x_default(self):
|
|
|
return 21
|
|
|
|
|
|
a = A()
|
|
|
self.assertEqual(a._trait_values, {})
|
|
|
self.assertEqual(list(a._trait_dyn_inits.keys()), ['x'])
|
|
|
self.assertEqual(a.x, 11)
|
|
|
self.assertEqual(a._trait_values, {'x': 11})
|
|
|
b = B()
|
|
|
self.assertEqual(b._trait_values, {'x': 20})
|
|
|
self.assertEqual(list(a._trait_dyn_inits.keys()), ['x'])
|
|
|
self.assertEqual(b.x, 20)
|
|
|
c = C()
|
|
|
self.assertEqual(c._trait_values, {})
|
|
|
self.assertEqual(list(a._trait_dyn_inits.keys()), ['x'])
|
|
|
self.assertEqual(c.x, 21)
|
|
|
self.assertEqual(c._trait_values, {'x': 21})
|
|
|
# Ensure that the base class remains unmolested when the _default
|
|
|
# initializer gets overridden in a subclass.
|
|
|
a = A()
|
|
|
c = C()
|
|
|
self.assertEqual(a._trait_values, {})
|
|
|
self.assertEqual(list(a._trait_dyn_inits.keys()), ['x'])
|
|
|
self.assertEqual(a.x, 11)
|
|
|
self.assertEqual(a._trait_values, {'x': 11})
|
|
|
|
|
|
|
|
|
|
|
|
class TestHasTraitsMeta(TestCase):
|
|
|
|
|
|
def test_metaclass(self):
|
|
|
self.assertEqual(type(HasTraits), MetaHasTraits)
|
|
|
|
|
|
class A(HasTraits):
|
|
|
a = Int
|
|
|
|
|
|
a = A()
|
|
|
self.assertEqual(type(a.__class__), MetaHasTraits)
|
|
|
self.assertEqual(a.a,0)
|
|
|
a.a = 10
|
|
|
self.assertEqual(a.a,10)
|
|
|
|
|
|
class B(HasTraits):
|
|
|
b = Int()
|
|
|
|
|
|
b = B()
|
|
|
self.assertEqual(b.b,0)
|
|
|
b.b = 10
|
|
|
self.assertEqual(b.b,10)
|
|
|
|
|
|
class C(HasTraits):
|
|
|
c = Int(30)
|
|
|
|
|
|
c = C()
|
|
|
self.assertEqual(c.c,30)
|
|
|
c.c = 10
|
|
|
self.assertEqual(c.c,10)
|
|
|
|
|
|
def test_this_class(self):
|
|
|
class A(HasTraits):
|
|
|
t = This()
|
|
|
tt = This()
|
|
|
class B(A):
|
|
|
tt = This()
|
|
|
ttt = This()
|
|
|
self.assertEqual(A.t.this_class, A)
|
|
|
self.assertEqual(B.t.this_class, A)
|
|
|
self.assertEqual(B.tt.this_class, B)
|
|
|
self.assertEqual(B.ttt.this_class, B)
|
|
|
|
|
|
class TestHasTraitsNotify(TestCase):
|
|
|
|
|
|
def setUp(self):
|
|
|
self._notify1 = []
|
|
|
self._notify2 = []
|
|
|
|
|
|
def notify1(self, name, old, new):
|
|
|
self._notify1.append((name, old, new))
|
|
|
|
|
|
def notify2(self, name, old, new):
|
|
|
self._notify2.append((name, old, new))
|
|
|
|
|
|
def test_notify_all(self):
|
|
|
|
|
|
class A(HasTraits):
|
|
|
a = Int
|
|
|
b = Float
|
|
|
|
|
|
a = A()
|
|
|
a.on_trait_change(self.notify1)
|
|
|
a.a = 0
|
|
|
self.assertEqual(len(self._notify1),0)
|
|
|
a.b = 0.0
|
|
|
self.assertEqual(len(self._notify1),0)
|
|
|
a.a = 10
|
|
|
self.assertTrue(('a',0,10) in self._notify1)
|
|
|
a.b = 10.0
|
|
|
self.assertTrue(('b',0.0,10.0) in self._notify1)
|
|
|
self.assertRaises(TraitError,setattr,a,'a','bad string')
|
|
|
self.assertRaises(TraitError,setattr,a,'b','bad string')
|
|
|
self._notify1 = []
|
|
|
a.on_trait_change(self.notify1,remove=True)
|
|
|
a.a = 20
|
|
|
a.b = 20.0
|
|
|
self.assertEqual(len(self._notify1),0)
|
|
|
|
|
|
def test_notify_one(self):
|
|
|
|
|
|
class A(HasTraits):
|
|
|
a = Int
|
|
|
b = Float
|
|
|
|
|
|
a = A()
|
|
|
a.on_trait_change(self.notify1, 'a')
|
|
|
a.a = 0
|
|
|
self.assertEqual(len(self._notify1),0)
|
|
|
a.a = 10
|
|
|
self.assertTrue(('a',0,10) in self._notify1)
|
|
|
self.assertRaises(TraitError,setattr,a,'a','bad string')
|
|
|
|
|
|
def test_subclass(self):
|
|
|
|
|
|
class A(HasTraits):
|
|
|
a = Int
|
|
|
|
|
|
class B(A):
|
|
|
b = Float
|
|
|
|
|
|
b = B()
|
|
|
self.assertEqual(b.a,0)
|
|
|
self.assertEqual(b.b,0.0)
|
|
|
b.a = 100
|
|
|
b.b = 100.0
|
|
|
self.assertEqual(b.a,100)
|
|
|
self.assertEqual(b.b,100.0)
|
|
|
|
|
|
def test_notify_subclass(self):
|
|
|
|
|
|
class A(HasTraits):
|
|
|
a = Int
|
|
|
|
|
|
class B(A):
|
|
|
b = Float
|
|
|
|
|
|
b = B()
|
|
|
b.on_trait_change(self.notify1, 'a')
|
|
|
b.on_trait_change(self.notify2, 'b')
|
|
|
b.a = 0
|
|
|
b.b = 0.0
|
|
|
self.assertEqual(len(self._notify1),0)
|
|
|
self.assertEqual(len(self._notify2),0)
|
|
|
b.a = 10
|
|
|
b.b = 10.0
|
|
|
self.assertTrue(('a',0,10) in self._notify1)
|
|
|
self.assertTrue(('b',0.0,10.0) in self._notify2)
|
|
|
|
|
|
def test_static_notify(self):
|
|
|
|
|
|
class A(HasTraits):
|
|
|
a = Int
|
|
|
_notify1 = []
|
|
|
def _a_changed(self, name, old, new):
|
|
|
self._notify1.append((name, old, new))
|
|
|
|
|
|
a = A()
|
|
|
a.a = 0
|
|
|
# This is broken!!!
|
|
|
self.assertEqual(len(a._notify1),0)
|
|
|
a.a = 10
|
|
|
self.assertTrue(('a',0,10) in a._notify1)
|
|
|
|
|
|
class B(A):
|
|
|
b = Float
|
|
|
_notify2 = []
|
|
|
def _b_changed(self, name, old, new):
|
|
|
self._notify2.append((name, old, new))
|
|
|
|
|
|
b = B()
|
|
|
b.a = 10
|
|
|
b.b = 10.0
|
|
|
self.assertTrue(('a',0,10) in b._notify1)
|
|
|
self.assertTrue(('b',0.0,10.0) in b._notify2)
|
|
|
|
|
|
def test_notify_args(self):
|
|
|
|
|
|
def callback0():
|
|
|
self.cb = ()
|
|
|
def callback1(name):
|
|
|
self.cb = (name,)
|
|
|
def callback2(name, new):
|
|
|
self.cb = (name, new)
|
|
|
def callback3(name, old, new):
|
|
|
self.cb = (name, old, new)
|
|
|
|
|
|
class A(HasTraits):
|
|
|
a = Int
|
|
|
|
|
|
a = A()
|
|
|
a.on_trait_change(callback0, 'a')
|
|
|
a.a = 10
|
|
|
self.assertEqual(self.cb,())
|
|
|
a.on_trait_change(callback0, 'a', remove=True)
|
|
|
|
|
|
a.on_trait_change(callback1, 'a')
|
|
|
a.a = 100
|
|
|
self.assertEqual(self.cb,('a',))
|
|
|
a.on_trait_change(callback1, 'a', remove=True)
|
|
|
|
|
|
a.on_trait_change(callback2, 'a')
|
|
|
a.a = 1000
|
|
|
self.assertEqual(self.cb,('a',1000))
|
|
|
a.on_trait_change(callback2, 'a', remove=True)
|
|
|
|
|
|
a.on_trait_change(callback3, 'a')
|
|
|
a.a = 10000
|
|
|
self.assertEqual(self.cb,('a',1000,10000))
|
|
|
a.on_trait_change(callback3, 'a', remove=True)
|
|
|
|
|
|
self.assertEqual(len(a._trait_notifiers['a']),0)
|
|
|
|
|
|
def test_notify_only_once(self):
|
|
|
|
|
|
class A(HasTraits):
|
|
|
listen_to = ['a']
|
|
|
|
|
|
a = Int(0)
|
|
|
b = 0
|
|
|
|
|
|
def __init__(self, **kwargs):
|
|
|
super(A, self).__init__(**kwargs)
|
|
|
self.on_trait_change(self.listener1, ['a'])
|
|
|
|
|
|
def listener1(self, name, old, new):
|
|
|
self.b += 1
|
|
|
|
|
|
class B(A):
|
|
|
|
|
|
c = 0
|
|
|
d = 0
|
|
|
|
|
|
def __init__(self, **kwargs):
|
|
|
super(B, self).__init__(**kwargs)
|
|
|
self.on_trait_change(self.listener2)
|
|
|
|
|
|
def listener2(self, name, old, new):
|
|
|
self.c += 1
|
|
|
|
|
|
def _a_changed(self, name, old, new):
|
|
|
self.d += 1
|
|
|
|
|
|
b = B()
|
|
|
b.a += 1
|
|
|
self.assertEqual(b.b, b.c)
|
|
|
self.assertEqual(b.b, b.d)
|
|
|
b.a += 1
|
|
|
self.assertEqual(b.b, b.c)
|
|
|
self.assertEqual(b.b, b.d)
|
|
|
|
|
|
|
|
|
class TestHasTraits(TestCase):
|
|
|
|
|
|
def test_trait_names(self):
|
|
|
class A(HasTraits):
|
|
|
i = Int
|
|
|
f = Float
|
|
|
a = A()
|
|
|
self.assertEqual(sorted(a.trait_names()),['f','i'])
|
|
|
self.assertEqual(sorted(A.class_trait_names()),['f','i'])
|
|
|
|
|
|
def test_trait_metadata(self):
|
|
|
class A(HasTraits):
|
|
|
i = Int(config_key='MY_VALUE')
|
|
|
a = A()
|
|
|
self.assertEqual(a.trait_metadata('i','config_key'), 'MY_VALUE')
|
|
|
|
|
|
def test_traits(self):
|
|
|
class A(HasTraits):
|
|
|
i = Int
|
|
|
f = Float
|
|
|
a = A()
|
|
|
self.assertEqual(a.traits(), dict(i=A.i, f=A.f))
|
|
|
self.assertEqual(A.class_traits(), dict(i=A.i, f=A.f))
|
|
|
|
|
|
def test_traits_metadata(self):
|
|
|
class A(HasTraits):
|
|
|
i = Int(config_key='VALUE1', other_thing='VALUE2')
|
|
|
f = Float(config_key='VALUE3', other_thing='VALUE2')
|
|
|
j = Int(0)
|
|
|
a = A()
|
|
|
self.assertEqual(a.traits(), dict(i=A.i, f=A.f, j=A.j))
|
|
|
traits = a.traits(config_key='VALUE1', other_thing='VALUE2')
|
|
|
self.assertEqual(traits, dict(i=A.i))
|
|
|
|
|
|
# This passes, but it shouldn't because I am replicating a bug in
|
|
|
# traits.
|
|
|
traits = a.traits(config_key=lambda v: True)
|
|
|
self.assertEqual(traits, dict(i=A.i, f=A.f, j=A.j))
|
|
|
|
|
|
def test_init(self):
|
|
|
class A(HasTraits):
|
|
|
i = Int()
|
|
|
x = Float()
|
|
|
a = A(i=1, x=10.0)
|
|
|
self.assertEqual(a.i, 1)
|
|
|
self.assertEqual(a.x, 10.0)
|
|
|
|
|
|
def test_positional_args(self):
|
|
|
class A(HasTraits):
|
|
|
i = Int(0)
|
|
|
def __init__(self, i):
|
|
|
super(A, self).__init__()
|
|
|
self.i = i
|
|
|
|
|
|
a = A(5)
|
|
|
self.assertEqual(a.i, 5)
|
|
|
# should raise TypeError if no positional arg given
|
|
|
self.assertRaises(TypeError, A)
|
|
|
|
|
|
#-----------------------------------------------------------------------------
|
|
|
# Tests for specific trait types
|
|
|
#-----------------------------------------------------------------------------
|
|
|
|
|
|
|
|
|
class TestType(TestCase):
|
|
|
|
|
|
def test_default(self):
|
|
|
|
|
|
class B(object): pass
|
|
|
class A(HasTraits):
|
|
|
klass = Type
|
|
|
|
|
|
a = A()
|
|
|
self.assertEqual(a.klass, None)
|
|
|
|
|
|
a.klass = B
|
|
|
self.assertEqual(a.klass, B)
|
|
|
self.assertRaises(TraitError, setattr, a, 'klass', 10)
|
|
|
|
|
|
def test_value(self):
|
|
|
|
|
|
class B(object): pass
|
|
|
class C(object): pass
|
|
|
class A(HasTraits):
|
|
|
klass = Type(B)
|
|
|
|
|
|
a = A()
|
|
|
self.assertEqual(a.klass, B)
|
|
|
self.assertRaises(TraitError, setattr, a, 'klass', C)
|
|
|
self.assertRaises(TraitError, setattr, a, 'klass', object)
|
|
|
a.klass = B
|
|
|
|
|
|
def test_allow_none(self):
|
|
|
|
|
|
class B(object): pass
|
|
|
class C(B): pass
|
|
|
class A(HasTraits):
|
|
|
klass = Type(B, allow_none=False)
|
|
|
|
|
|
a = A()
|
|
|
self.assertEqual(a.klass, B)
|
|
|
self.assertRaises(TraitError, setattr, a, 'klass', None)
|
|
|
a.klass = C
|
|
|
self.assertEqual(a.klass, C)
|
|
|
|
|
|
def test_validate_klass(self):
|
|
|
|
|
|
class A(HasTraits):
|
|
|
klass = Type('no strings allowed')
|
|
|
|
|
|
self.assertRaises(ImportError, A)
|
|
|
|
|
|
class A(HasTraits):
|
|
|
klass = Type('rub.adub.Duck')
|
|
|
|
|
|
self.assertRaises(ImportError, A)
|
|
|
|
|
|
def test_validate_default(self):
|
|
|
|
|
|
class B(object): pass
|
|
|
class A(HasTraits):
|
|
|
klass = Type('bad default', B)
|
|
|
|
|
|
self.assertRaises(ImportError, A)
|
|
|
|
|
|
class C(HasTraits):
|
|
|
klass = Type(None, B, allow_none=False)
|
|
|
|
|
|
self.assertRaises(TraitError, C)
|
|
|
|
|
|
def test_str_klass(self):
|
|
|
|
|
|
class A(HasTraits):
|
|
|
klass = Type('IPython.utils.ipstruct.Struct')
|
|
|
|
|
|
from IPython.utils.ipstruct import Struct
|
|
|
a = A()
|
|
|
a.klass = Struct
|
|
|
self.assertEqual(a.klass, Struct)
|
|
|
|
|
|
self.assertRaises(TraitError, setattr, a, 'klass', 10)
|
|
|
|
|
|
class TestInstance(TestCase):
|
|
|
|
|
|
def test_basic(self):
|
|
|
class Foo(object): pass
|
|
|
class Bar(Foo): pass
|
|
|
class Bah(object): pass
|
|
|
|
|
|
class A(HasTraits):
|
|
|
inst = Instance(Foo)
|
|
|
|
|
|
a = A()
|
|
|
self.assertTrue(a.inst is None)
|
|
|
a.inst = Foo()
|
|
|
self.assertTrue(isinstance(a.inst, Foo))
|
|
|
a.inst = Bar()
|
|
|
self.assertTrue(isinstance(a.inst, Foo))
|
|
|
self.assertRaises(TraitError, setattr, a, 'inst', Foo)
|
|
|
self.assertRaises(TraitError, setattr, a, 'inst', Bar)
|
|
|
self.assertRaises(TraitError, setattr, a, 'inst', Bah())
|
|
|
|
|
|
def test_unique_default_value(self):
|
|
|
class Foo(object): pass
|
|
|
class A(HasTraits):
|
|
|
inst = Instance(Foo,(),{})
|
|
|
|
|
|
a = A()
|
|
|
b = A()
|
|
|
self.assertTrue(a.inst is not b.inst)
|
|
|
|
|
|
def test_args_kw(self):
|
|
|
class Foo(object):
|
|
|
def __init__(self, c): self.c = c
|
|
|
class Bar(object): pass
|
|
|
class Bah(object):
|
|
|
def __init__(self, c, d):
|
|
|
self.c = c; self.d = d
|
|
|
|
|
|
class A(HasTraits):
|
|
|
inst = Instance(Foo, (10,))
|
|
|
a = A()
|
|
|
self.assertEqual(a.inst.c, 10)
|
|
|
|
|
|
class B(HasTraits):
|
|
|
inst = Instance(Bah, args=(10,), kw=dict(d=20))
|
|
|
b = B()
|
|
|
self.assertEqual(b.inst.c, 10)
|
|
|
self.assertEqual(b.inst.d, 20)
|
|
|
|
|
|
class C(HasTraits):
|
|
|
inst = Instance(Foo)
|
|
|
c = C()
|
|
|
self.assertTrue(c.inst is None)
|
|
|
|
|
|
def test_bad_default(self):
|
|
|
class Foo(object): pass
|
|
|
|
|
|
class A(HasTraits):
|
|
|
inst = Instance(Foo, allow_none=False)
|
|
|
|
|
|
self.assertRaises(TraitError, A)
|
|
|
|
|
|
def test_instance(self):
|
|
|
class Foo(object): pass
|
|
|
|
|
|
def inner():
|
|
|
class A(HasTraits):
|
|
|
inst = Instance(Foo())
|
|
|
|
|
|
self.assertRaises(TraitError, inner)
|
|
|
|
|
|
|
|
|
class TestThis(TestCase):
|
|
|
|
|
|
def test_this_class(self):
|
|
|
class Foo(HasTraits):
|
|
|
this = This
|
|
|
|
|
|
f = Foo()
|
|
|
self.assertEqual(f.this, None)
|
|
|
g = Foo()
|
|
|
f.this = g
|
|
|
self.assertEqual(f.this, g)
|
|
|
self.assertRaises(TraitError, setattr, f, 'this', 10)
|
|
|
|
|
|
def test_this_inst(self):
|
|
|
class Foo(HasTraits):
|
|
|
this = This()
|
|
|
|
|
|
f = Foo()
|
|
|
f.this = Foo()
|
|
|
self.assertTrue(isinstance(f.this, Foo))
|
|
|
|
|
|
def test_subclass(self):
|
|
|
class Foo(HasTraits):
|
|
|
t = This()
|
|
|
class Bar(Foo):
|
|
|
pass
|
|
|
f = Foo()
|
|
|
b = Bar()
|
|
|
f.t = b
|
|
|
b.t = f
|
|
|
self.assertEqual(f.t, b)
|
|
|
self.assertEqual(b.t, f)
|
|
|
|
|
|
def test_subclass_override(self):
|
|
|
class Foo(HasTraits):
|
|
|
t = This()
|
|
|
class Bar(Foo):
|
|
|
t = This()
|
|
|
f = Foo()
|
|
|
b = Bar()
|
|
|
f.t = b
|
|
|
self.assertEqual(f.t, b)
|
|
|
self.assertRaises(TraitError, setattr, b, 't', f)
|
|
|
|
|
|
class TraitTestBase(TestCase):
|
|
|
"""A best testing class for basic trait types."""
|
|
|
|
|
|
def assign(self, value):
|
|
|
self.obj.value = value
|
|
|
|
|
|
def coerce(self, value):
|
|
|
return value
|
|
|
|
|
|
def test_good_values(self):
|
|
|
if hasattr(self, '_good_values'):
|
|
|
for value in self._good_values:
|
|
|
self.assign(value)
|
|
|
self.assertEqual(self.obj.value, self.coerce(value))
|
|
|
|
|
|
def test_bad_values(self):
|
|
|
if hasattr(self, '_bad_values'):
|
|
|
for value in self._bad_values:
|
|
|
try:
|
|
|
self.assertRaises(TraitError, self.assign, value)
|
|
|
except AssertionError:
|
|
|
assert False, value
|
|
|
|
|
|
def test_default_value(self):
|
|
|
if hasattr(self, '_default_value'):
|
|
|
self.assertEqual(self._default_value, self.obj.value)
|
|
|
|
|
|
def tearDown(self):
|
|
|
# restore default value after tests, if set
|
|
|
if hasattr(self, '_default_value'):
|
|
|
self.obj.value = self._default_value
|
|
|
|
|
|
|
|
|
class AnyTrait(HasTraits):
|
|
|
|
|
|
value = Any
|
|
|
|
|
|
class AnyTraitTest(TraitTestBase):
|
|
|
|
|
|
obj = AnyTrait()
|
|
|
|
|
|
_default_value = None
|
|
|
_good_values = [10.0, 'ten', u'ten', [10], {'ten': 10},(10,), None, 1j]
|
|
|
_bad_values = []
|
|
|
|
|
|
|
|
|
class IntTrait(HasTraits):
|
|
|
|
|
|
value = Int(99)
|
|
|
|
|
|
class TestInt(TraitTestBase):
|
|
|
|
|
|
obj = IntTrait()
|
|
|
_default_value = 99
|
|
|
_good_values = [10, -10]
|
|
|
_bad_values = ['ten', u'ten', [10], {'ten': 10},(10,), None, 1j,
|
|
|
10.1, -10.1, '10L', '-10L', '10.1', '-10.1', u'10L',
|
|
|
u'-10L', u'10.1', u'-10.1', '10', '-10', u'10', u'-10']
|
|
|
if not py3compat.PY3:
|
|
|
_bad_values.extend([long(10), long(-10), 10*sys.maxint, -10*sys.maxint])
|
|
|
|
|
|
|
|
|
class LongTrait(HasTraits):
|
|
|
|
|
|
value = Long(99 if py3compat.PY3 else long(99))
|
|
|
|
|
|
class TestLong(TraitTestBase):
|
|
|
|
|
|
obj = LongTrait()
|
|
|
|
|
|
_default_value = 99 if py3compat.PY3 else long(99)
|
|
|
_good_values = [10, -10]
|
|
|
_bad_values = ['ten', u'ten', [10], {'ten': 10},(10,),
|
|
|
None, 1j, 10.1, -10.1, '10', '-10', '10L', '-10L', '10.1',
|
|
|
'-10.1', u'10', u'-10', u'10L', u'-10L', u'10.1',
|
|
|
u'-10.1']
|
|
|
if not py3compat.PY3:
|
|
|
# maxint undefined on py3, because int == long
|
|
|
_good_values.extend([long(10), long(-10), 10*sys.maxint, -10*sys.maxint])
|
|
|
_bad_values.extend([[long(10)], (long(10),)])
|
|
|
|
|
|
@skipif(py3compat.PY3, "not relevant on py3")
|
|
|
def test_cast_small(self):
|
|
|
"""Long casts ints to long"""
|
|
|
self.obj.value = 10
|
|
|
self.assertEqual(type(self.obj.value), long)
|
|
|
|
|
|
|
|
|
class IntegerTrait(HasTraits):
|
|
|
value = Integer(1)
|
|
|
|
|
|
class TestInteger(TestLong):
|
|
|
obj = IntegerTrait()
|
|
|
_default_value = 1
|
|
|
|
|
|
def coerce(self, n):
|
|
|
return int(n)
|
|
|
|
|
|
@skipif(py3compat.PY3, "not relevant on py3")
|
|
|
def test_cast_small(self):
|
|
|
"""Integer casts small longs to int"""
|
|
|
if py3compat.PY3:
|
|
|
raise SkipTest("not relevant on py3")
|
|
|
|
|
|
self.obj.value = long(100)
|
|
|
self.assertEqual(type(self.obj.value), int)
|
|
|
|
|
|
|
|
|
class FloatTrait(HasTraits):
|
|
|
|
|
|
value = Float(99.0)
|
|
|
|
|
|
class TestFloat(TraitTestBase):
|
|
|
|
|
|
obj = FloatTrait()
|
|
|
|
|
|
_default_value = 99.0
|
|
|
_good_values = [10, -10, 10.1, -10.1]
|
|
|
_bad_values = ['ten', u'ten', [10], {'ten': 10},(10,), None,
|
|
|
1j, '10', '-10', '10L', '-10L', '10.1', '-10.1', u'10',
|
|
|
u'-10', u'10L', u'-10L', u'10.1', u'-10.1']
|
|
|
if not py3compat.PY3:
|
|
|
_bad_values.extend([long(10), long(-10)])
|
|
|
|
|
|
|
|
|
class ComplexTrait(HasTraits):
|
|
|
|
|
|
value = Complex(99.0-99.0j)
|
|
|
|
|
|
class TestComplex(TraitTestBase):
|
|
|
|
|
|
obj = ComplexTrait()
|
|
|
|
|
|
_default_value = 99.0-99.0j
|
|
|
_good_values = [10, -10, 10.1, -10.1, 10j, 10+10j, 10-10j,
|
|
|
10.1j, 10.1+10.1j, 10.1-10.1j]
|
|
|
_bad_values = [u'10L', u'-10L', 'ten', [10], {'ten': 10},(10,), None]
|
|
|
if not py3compat.PY3:
|
|
|
_bad_values.extend([long(10), long(-10)])
|
|
|
|
|
|
|
|
|
class BytesTrait(HasTraits):
|
|
|
|
|
|
value = Bytes(b'string')
|
|
|
|
|
|
class TestBytes(TraitTestBase):
|
|
|
|
|
|
obj = BytesTrait()
|
|
|
|
|
|
_default_value = b'string'
|
|
|
_good_values = [b'10', b'-10', b'10L',
|
|
|
b'-10L', b'10.1', b'-10.1', b'string']
|
|
|
_bad_values = [10, -10, 10.1, -10.1, 1j, [10],
|
|
|
['ten'],{'ten': 10},(10,), None, u'string']
|
|
|
if not py3compat.PY3:
|
|
|
_bad_values.extend([long(10), long(-10)])
|
|
|
|
|
|
|
|
|
class UnicodeTrait(HasTraits):
|
|
|
|
|
|
value = Unicode(u'unicode')
|
|
|
|
|
|
class TestUnicode(TraitTestBase):
|
|
|
|
|
|
obj = UnicodeTrait()
|
|
|
|
|
|
_default_value = u'unicode'
|
|
|
_good_values = ['10', '-10', '10L', '-10L', '10.1',
|
|
|
'-10.1', '', u'', 'string', u'string', u"€"]
|
|
|
_bad_values = [10, -10, 10.1, -10.1, 1j,
|
|
|
[10], ['ten'], [u'ten'], {'ten': 10},(10,), None]
|
|
|
if not py3compat.PY3:
|
|
|
_bad_values.extend([long(10), long(-10)])
|
|
|
|
|
|
|
|
|
class ObjectNameTrait(HasTraits):
|
|
|
value = ObjectName("abc")
|
|
|
|
|
|
class TestObjectName(TraitTestBase):
|
|
|
obj = ObjectNameTrait()
|
|
|
|
|
|
_default_value = "abc"
|
|
|
_good_values = ["a", "gh", "g9", "g_", "_G", u"a345_"]
|
|
|
_bad_values = [1, "", u"€", "9g", "!", "#abc", "aj@", "a.b", "a()", "a[0]",
|
|
|
object(), object]
|
|
|
if sys.version_info[0] < 3:
|
|
|
_bad_values.append(u"þ")
|
|
|
else:
|
|
|
_good_values.append(u"þ") # þ=1 is valid in Python 3 (PEP 3131).
|
|
|
|
|
|
|
|
|
class DottedObjectNameTrait(HasTraits):
|
|
|
value = DottedObjectName("a.b")
|
|
|
|
|
|
class TestDottedObjectName(TraitTestBase):
|
|
|
obj = DottedObjectNameTrait()
|
|
|
|
|
|
_default_value = "a.b"
|
|
|
_good_values = ["A", "y.t", "y765.__repr__", "os.path.join", u"os.path.join"]
|
|
|
_bad_values = [1, u"abc.€", "_.@", ".", ".abc", "abc.", ".abc."]
|
|
|
if sys.version_info[0] < 3:
|
|
|
_bad_values.append(u"t.þ")
|
|
|
else:
|
|
|
_good_values.append(u"t.þ")
|
|
|
|
|
|
|
|
|
class TCPAddressTrait(HasTraits):
|
|
|
|
|
|
value = TCPAddress()
|
|
|
|
|
|
class TestTCPAddress(TraitTestBase):
|
|
|
|
|
|
obj = TCPAddressTrait()
|
|
|
|
|
|
_default_value = ('127.0.0.1',0)
|
|
|
_good_values = [('localhost',0),('192.168.0.1',1000),('www.google.com',80)]
|
|
|
_bad_values = [(0,0),('localhost',10.0),('localhost',-1)]
|
|
|
|
|
|
class ListTrait(HasTraits):
|
|
|
|
|
|
value = List(Int)
|
|
|
|
|
|
class TestList(TraitTestBase):
|
|
|
|
|
|
obj = ListTrait()
|
|
|
|
|
|
_default_value = []
|
|
|
_good_values = [[], [1], list(range(10))]
|
|
|
_bad_values = [10, [1,'a'], 'a', (1,2)]
|
|
|
|
|
|
class LenListTrait(HasTraits):
|
|
|
|
|
|
value = List(Int, [0], minlen=1, maxlen=2)
|
|
|
|
|
|
class TestLenList(TraitTestBase):
|
|
|
|
|
|
obj = LenListTrait()
|
|
|
|
|
|
_default_value = [0]
|
|
|
_good_values = [[1], list(range(2))]
|
|
|
_bad_values = [10, [1,'a'], 'a', (1,2), [], list(range(3))]
|
|
|
|
|
|
class TupleTrait(HasTraits):
|
|
|
|
|
|
value = Tuple(Int)
|
|
|
|
|
|
class TestTupleTrait(TraitTestBase):
|
|
|
|
|
|
obj = TupleTrait()
|
|
|
|
|
|
_default_value = None
|
|
|
_good_values = [(1,), None,(0,)]
|
|
|
_bad_values = [10, (1,2), [1],('a'), ()]
|
|
|
|
|
|
def test_invalid_args(self):
|
|
|
self.assertRaises(TypeError, Tuple, 5)
|
|
|
self.assertRaises(TypeError, Tuple, default_value='hello')
|
|
|
t = Tuple(Int, CBytes, default_value=(1,5))
|
|
|
|
|
|
class LooseTupleTrait(HasTraits):
|
|
|
|
|
|
value = Tuple((1,2,3))
|
|
|
|
|
|
class TestLooseTupleTrait(TraitTestBase):
|
|
|
|
|
|
obj = LooseTupleTrait()
|
|
|
|
|
|
_default_value = (1,2,3)
|
|
|
_good_values = [(1,), None, (0,), tuple(range(5)), tuple('hello'), ('a',5), ()]
|
|
|
_bad_values = [10, 'hello', [1], []]
|
|
|
|
|
|
def test_invalid_args(self):
|
|
|
self.assertRaises(TypeError, Tuple, 5)
|
|
|
self.assertRaises(TypeError, Tuple, default_value='hello')
|
|
|
t = Tuple(Int, CBytes, default_value=(1,5))
|
|
|
|
|
|
|
|
|
class MultiTupleTrait(HasTraits):
|
|
|
|
|
|
value = Tuple(Int, Bytes, default_value=[99,b'bottles'])
|
|
|
|
|
|
class TestMultiTuple(TraitTestBase):
|
|
|
|
|
|
obj = MultiTupleTrait()
|
|
|
|
|
|
_default_value = (99,b'bottles')
|
|
|
_good_values = [(1,b'a'), (2,b'b')]
|
|
|
_bad_values = ((),10, b'a', (1,b'a',3), (b'a',1), (1, u'a'))
|
|
|
|
|
|
class CRegExpTrait(HasTraits):
|
|
|
|
|
|
value = CRegExp(r'')
|
|
|
|
|
|
class TestCRegExp(TraitTestBase):
|
|
|
|
|
|
def coerce(self, value):
|
|
|
return re.compile(value)
|
|
|
|
|
|
obj = CRegExpTrait()
|
|
|
|
|
|
_default_value = re.compile(r'')
|
|
|
_good_values = [r'\d+', re.compile(r'\d+')]
|
|
|
_bad_values = [r'(', None, ()]
|
|
|
|
|
|
class DictTrait(HasTraits):
|
|
|
value = Dict()
|
|
|
|
|
|
def test_dict_assignment():
|
|
|
d = dict()
|
|
|
c = DictTrait()
|
|
|
c.value = d
|
|
|
d['a'] = 5
|
|
|
nt.assert_equal(d, c.value)
|
|
|
nt.assert_true(c.value is d)
|
|
|
|
|
|
class TestBind(TestCase):
|
|
|
def test_connect_same(self):
|
|
|
"""Verify two traitlets of the same type can be bound together using bind."""
|
|
|
|
|
|
# Create two simple classes with Int traitlets.
|
|
|
class A(HasTraits):
|
|
|
value = Int()
|
|
|
a = A(value=9)
|
|
|
b = A(value=8)
|
|
|
|
|
|
# Conenct the two classes.
|
|
|
c = bind((a, 'value'), (b, 'value'))
|
|
|
|
|
|
# Make sure the values are the same at the point of binding.
|
|
|
self.assertEqual(a.value, b.value)
|
|
|
|
|
|
# Change one of the values to make sure they stay in sync.
|
|
|
a.value = 5
|
|
|
self.assertEqual(a.value, b.value)
|
|
|
b.value = 6
|
|
|
self.assertEqual(a.value, b.value)
|
|
|
|
|
|
def test_bind_different(self):
|
|
|
"""Verify two traitlets of different types can be bound together using bind."""
|
|
|
|
|
|
# Create two simple classes with Int traitlets.
|
|
|
class A(HasTraits):
|
|
|
value = Int()
|
|
|
class B(HasTraits):
|
|
|
count = Int()
|
|
|
a = A(value=9)
|
|
|
b = B(count=8)
|
|
|
|
|
|
# Conenct the two classes.
|
|
|
c = bind((a, 'value'), (b, 'count'))
|
|
|
|
|
|
# Make sure the values are the same at the point of binding.
|
|
|
self.assertEqual(a.value, b.count)
|
|
|
|
|
|
# Change one of the values to make sure they stay in sync.
|
|
|
a.value = 5
|
|
|
self.assertEqual(a.value, b.count)
|
|
|
b.count = 4
|
|
|
self.assertEqual(a.value, b.count)
|
|
|
|
|
|
def test_unbind(self):
|
|
|
"""Verify two binded traitlets can be unbinded."""
|
|
|
|
|
|
# Create two simple classes with Int traitlets.
|
|
|
class A(HasTraits):
|
|
|
value = Int()
|
|
|
a = A(value=9)
|
|
|
b = A(value=8)
|
|
|
|
|
|
# Conenct the two classes.
|
|
|
c = bind((a, 'value'), (b, 'value'))
|
|
|
a.value = 4
|
|
|
c.unbind()
|
|
|
|
|
|
# Change one of the values to make sure they stay in sync.
|
|
|
a.value = 5
|
|
|
self.assertNotEqual(a.value, b.value)
|
|
|
|
|
|
def test_callbacks(self):
|
|
|
"""Verify two binded traitlets have their callbacks called once."""
|
|
|
|
|
|
# Create two simple classes with Int traitlets.
|
|
|
class A(HasTraits):
|
|
|
value = Int()
|
|
|
class B(HasTraits):
|
|
|
count = Int()
|
|
|
a = A(value=9)
|
|
|
b = B(count=8)
|
|
|
|
|
|
# Register callbacks that count.
|
|
|
callback_count = []
|
|
|
def a_callback(name, old, new):
|
|
|
callback_count.append('a')
|
|
|
a.on_trait_change(a_callback, 'value')
|
|
|
def b_callback(name, old, new):
|
|
|
callback_count.append('b')
|
|
|
b.on_trait_change(b_callback, 'count')
|
|
|
|
|
|
# Conenct the two classes.
|
|
|
c = bind((a, 'value'), (b, 'count'))
|
|
|
|
|
|
# Make sure b's count was set to a's value once.
|
|
|
self.assertEqual(''.join(callback_count), 'b')
|
|
|
del callback_count[:]
|
|
|
|
|
|
# Make sure a's value was set to b's count once.
|
|
|
b.count = 5
|
|
|
self.assertEqual(''.join(callback_count), 'ba')
|
|
|
del callback_count[:]
|
|
|
|
|
|
# Make sure b's count was set to a's value once.
|
|
|
a.value = 4
|
|
|
self.assertEqual(''.join(callback_count), 'ab')
|
|
|
del callback_count[:]
|
|
|
|
