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# encoding: utf-8
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"""Tests for IPython.utils.traitlets."""
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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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#
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# Adapted from enthought.traits, Copyright (c) Enthought, Inc.,
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# also under the terms of the Modified BSD License.
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import pickle
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import re
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import sys
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from unittest import TestCase
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import nose.tools as nt
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from nose import SkipTest
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from IPython.utils.traitlets import (
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HasTraits, MetaHasTraits, TraitType, Any, Bool, CBytes, Dict, Enum,
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Int, Long, Integer, Float, Complex, Bytes, Unicode, TraitError,
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Union, Undefined, Type, This, Instance, TCPAddress, List, Tuple,
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ObjectName, DottedObjectName, CRegExp, link, directional_link,
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EventfulList, EventfulDict, ForwardDeclaredType, ForwardDeclaredInstance,
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)
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from IPython.utils import py3compat
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from IPython.testing.decorators import skipif
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#-----------------------------------------------------------------------------
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# Helper classes for testing
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#-----------------------------------------------------------------------------
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class HasTraitsStub(HasTraits):
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def _notify_trait(self, name, old, new):
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self._notify_name = name
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self._notify_old = old
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self._notify_new = new
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#-----------------------------------------------------------------------------
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# Test classes
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#-----------------------------------------------------------------------------
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class TestTraitType(TestCase):
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def test_get_undefined(self):
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class A(HasTraits):
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a = TraitType
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a = A()
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self.assertEqual(a.a, Undefined)
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def test_set(self):
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class A(HasTraitsStub):
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a = TraitType
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a = A()
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a.a = 10
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self.assertEqual(a.a, 10)
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self.assertEqual(a._notify_name, 'a')
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self.assertEqual(a._notify_old, Undefined)
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self.assertEqual(a._notify_new, 10)
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def test_validate(self):
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class MyTT(TraitType):
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def validate(self, inst, value):
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return -1
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class A(HasTraitsStub):
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tt = MyTT
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a = A()
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a.tt = 10
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self.assertEqual(a.tt, -1)
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def test_default_validate(self):
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class MyIntTT(TraitType):
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def validate(self, obj, value):
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if isinstance(value, int):
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return value
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self.error(obj, value)
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class A(HasTraits):
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tt = MyIntTT(10)
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a = A()
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self.assertEqual(a.tt, 10)
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# Defaults are validated when the HasTraits is instantiated
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class B(HasTraits):
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tt = MyIntTT('bad default')
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self.assertRaises(TraitError, B)
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def test_info(self):
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class A(HasTraits):
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tt = TraitType
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a = A()
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self.assertEqual(A.tt.info(), 'any value')
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def test_error(self):
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class A(HasTraits):
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tt = TraitType
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a = A()
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self.assertRaises(TraitError, A.tt.error, a, 10)
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def test_dynamic_initializer(self):
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class A(HasTraits):
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x = Int(10)
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def _x_default(self):
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return 11
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class B(A):
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x = Int(20)
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class C(A):
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def _x_default(self):
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return 21
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a = A()
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self.assertEqual(a._trait_values, {})
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self.assertEqual(list(a._trait_dyn_inits.keys()), ['x'])
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self.assertEqual(a.x, 11)
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self.assertEqual(a._trait_values, {'x': 11})
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b = B()
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self.assertEqual(b._trait_values, {'x': 20})
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self.assertEqual(list(a._trait_dyn_inits.keys()), ['x'])
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self.assertEqual(b.x, 20)
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c = C()
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self.assertEqual(c._trait_values, {})
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self.assertEqual(list(a._trait_dyn_inits.keys()), ['x'])
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self.assertEqual(c.x, 21)
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self.assertEqual(c._trait_values, {'x': 21})
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# Ensure that the base class remains unmolested when the _default
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# initializer gets overridden in a subclass.
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a = A()
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c = C()
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self.assertEqual(a._trait_values, {})
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self.assertEqual(list(a._trait_dyn_inits.keys()), ['x'])
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self.assertEqual(a.x, 11)
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self.assertEqual(a._trait_values, {'x': 11})
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class TestHasTraitsMeta(TestCase):
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def test_metaclass(self):
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self.assertEqual(type(HasTraits), MetaHasTraits)
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class A(HasTraits):
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a = Int
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a = A()
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self.assertEqual(type(a.__class__), MetaHasTraits)
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self.assertEqual(a.a,0)
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a.a = 10
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self.assertEqual(a.a,10)
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class B(HasTraits):
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b = Int()
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b = B()
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self.assertEqual(b.b,0)
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b.b = 10
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self.assertEqual(b.b,10)
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class C(HasTraits):
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c = Int(30)
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c = C()
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self.assertEqual(c.c,30)
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c.c = 10
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self.assertEqual(c.c,10)
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def test_this_class(self):
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class A(HasTraits):
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t = This()
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tt = This()
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class B(A):
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tt = This()
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ttt = This()
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self.assertEqual(A.t.this_class, A)
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self.assertEqual(B.t.this_class, A)
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self.assertEqual(B.tt.this_class, B)
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self.assertEqual(B.ttt.this_class, B)
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class TestHasTraitsNotify(TestCase):
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def setUp(self):
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self._notify1 = []
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self._notify2 = []
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def notify1(self, name, old, new):
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self._notify1.append((name, old, new))
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def notify2(self, name, old, new):
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self._notify2.append((name, old, new))
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def test_notify_all(self):
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class A(HasTraits):
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a = Int
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b = Float
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a = A()
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a.on_trait_change(self.notify1)
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a.a = 0
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self.assertEqual(len(self._notify1),0)
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a.b = 0.0
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self.assertEqual(len(self._notify1),0)
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a.a = 10
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self.assertTrue(('a',0,10) in self._notify1)
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a.b = 10.0
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self.assertTrue(('b',0.0,10.0) in self._notify1)
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self.assertRaises(TraitError,setattr,a,'a','bad string')
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self.assertRaises(TraitError,setattr,a,'b','bad string')
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self._notify1 = []
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a.on_trait_change(self.notify1,remove=True)
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a.a = 20
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a.b = 20.0
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self.assertEqual(len(self._notify1),0)
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def test_notify_one(self):
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class A(HasTraits):
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a = Int
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b = Float
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a = A()
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a.on_trait_change(self.notify1, 'a')
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a.a = 0
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self.assertEqual(len(self._notify1),0)
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a.a = 10
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self.assertTrue(('a',0,10) in self._notify1)
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self.assertRaises(TraitError,setattr,a,'a','bad string')
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def test_subclass(self):
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class A(HasTraits):
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a = Int
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class B(A):
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b = Float
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b = B()
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self.assertEqual(b.a,0)
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self.assertEqual(b.b,0.0)
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b.a = 100
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b.b = 100.0
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self.assertEqual(b.a,100)
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self.assertEqual(b.b,100.0)
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def test_notify_subclass(self):
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class A(HasTraits):
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a = Int
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class B(A):
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b = Float
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b = B()
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b.on_trait_change(self.notify1, 'a')
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b.on_trait_change(self.notify2, 'b')
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b.a = 0
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b.b = 0.0
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self.assertEqual(len(self._notify1),0)
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self.assertEqual(len(self._notify2),0)
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b.a = 10
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b.b = 10.0
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self.assertTrue(('a',0,10) in self._notify1)
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self.assertTrue(('b',0.0,10.0) in self._notify2)
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def test_static_notify(self):
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class A(HasTraits):
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a = Int
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_notify1 = []
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def _a_changed(self, name, old, new):
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self._notify1.append((name, old, new))
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a = A()
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a.a = 0
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# This is broken!!!
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self.assertEqual(len(a._notify1),0)
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a.a = 10
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self.assertTrue(('a',0,10) in a._notify1)
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class B(A):
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b = Float
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_notify2 = []
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def _b_changed(self, name, old, new):
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self._notify2.append((name, old, new))
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b = B()
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b.a = 10
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b.b = 10.0
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self.assertTrue(('a',0,10) in b._notify1)
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self.assertTrue(('b',0.0,10.0) in b._notify2)
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def test_notify_args(self):
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def callback0():
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self.cb = ()
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def callback1(name):
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self.cb = (name,)
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def callback2(name, new):
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self.cb = (name, new)
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def callback3(name, old, new):
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self.cb = (name, old, new)
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class A(HasTraits):
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a = Int
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a = A()
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a.on_trait_change(callback0, 'a')
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a.a = 10
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self.assertEqual(self.cb,())
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a.on_trait_change(callback0, 'a', remove=True)
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a.on_trait_change(callback1, 'a')
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a.a = 100
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self.assertEqual(self.cb,('a',))
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a.on_trait_change(callback1, 'a', remove=True)
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a.on_trait_change(callback2, 'a')
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a.a = 1000
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self.assertEqual(self.cb,('a',1000))
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a.on_trait_change(callback2, 'a', remove=True)
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a.on_trait_change(callback3, 'a')
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a.a = 10000
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self.assertEqual(self.cb,('a',1000,10000))
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a.on_trait_change(callback3, 'a', remove=True)
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self.assertEqual(len(a._trait_notifiers['a']),0)
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def test_notify_only_once(self):
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class A(HasTraits):
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listen_to = ['a']
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a = Int(0)
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b = 0
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def __init__(self, **kwargs):
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super(A, self).__init__(**kwargs)
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self.on_trait_change(self.listener1, ['a'])
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def listener1(self, name, old, new):
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self.b += 1
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class B(A):
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c = 0
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d = 0
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def __init__(self, **kwargs):
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super(B, self).__init__(**kwargs)
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self.on_trait_change(self.listener2)
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def listener2(self, name, old, new):
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self.c += 1
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def _a_changed(self, name, old, new):
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self.d += 1
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b = B()
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b.a += 1
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self.assertEqual(b.b, b.c)
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self.assertEqual(b.b, b.d)
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b.a += 1
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self.assertEqual(b.b, b.c)
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self.assertEqual(b.b, b.d)
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class TestHasTraits(TestCase):
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def test_trait_names(self):
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class A(HasTraits):
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i = Int
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f = Float
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a = A()
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self.assertEqual(sorted(a.trait_names()),['f','i'])
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self.assertEqual(sorted(A.class_trait_names()),['f','i'])
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def test_trait_metadata(self):
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class A(HasTraits):
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i = Int(config_key='MY_VALUE')
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a = A()
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self.assertEqual(a.trait_metadata('i','config_key'), 'MY_VALUE')
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def test_trait_metadata_default(self):
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class A(HasTraits):
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i = Int()
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a = A()
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self.assertEqual(a.trait_metadata('i', 'config_key'), None)
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self.assertEqual(a.trait_metadata('i', 'config_key', 'default'), 'default')
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def test_traits(self):
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class A(HasTraits):
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i = Int
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f = Float
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a = A()
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self.assertEqual(a.traits(), dict(i=A.i, f=A.f))
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self.assertEqual(A.class_traits(), dict(i=A.i, f=A.f))
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def test_traits_metadata(self):
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class A(HasTraits):
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i = Int(config_key='VALUE1', other_thing='VALUE2')
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f = Float(config_key='VALUE3', other_thing='VALUE2')
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j = Int(0)
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a = A()
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self.assertEqual(a.traits(), dict(i=A.i, f=A.f, j=A.j))
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traits = a.traits(config_key='VALUE1', other_thing='VALUE2')
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self.assertEqual(traits, dict(i=A.i))
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# This passes, but it shouldn't because I am replicating a bug in
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# traits.
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traits = a.traits(config_key=lambda v: True)
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self.assertEqual(traits, dict(i=A.i, f=A.f, j=A.j))
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def test_init(self):
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class A(HasTraits):
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i = Int()
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x = Float()
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a = A(i=1, x=10.0)
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self.assertEqual(a.i, 1)
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self.assertEqual(a.x, 10.0)
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def test_positional_args(self):
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class A(HasTraits):
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i = Int(0)
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def __init__(self, i):
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super(A, self).__init__()
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self.i = i
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a = A(5)
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self.assertEqual(a.i, 5)
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# should raise TypeError if no positional arg given
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self.assertRaises(TypeError, A)
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#-----------------------------------------------------------------------------
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# Tests for specific trait types
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#-----------------------------------------------------------------------------
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class TestType(TestCase):
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def test_default(self):
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class B(object): pass
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class A(HasTraits):
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klass = Type
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a = A()
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self.assertEqual(a.klass, None)
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a.klass = B
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self.assertEqual(a.klass, B)
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self.assertRaises(TraitError, setattr, a, 'klass', 10)
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def test_value(self):
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|
|
|
|
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)
|
|
|
|
|
|
def test_set_str_klass(self):
|
|
|
|
|
|
class A(HasTraits):
|
|
|
klass = Type()
|
|
|
|
|
|
a = A(klass='IPython.utils.ipstruct.Struct')
|
|
|
from IPython.utils.ipstruct import Struct
|
|
|
self.assertEqual(a.klass, Struct)
|
|
|
|
|
|
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_default_klass(self):
|
|
|
class Foo(object): pass
|
|
|
class Bar(Foo): pass
|
|
|
class Bah(object): pass
|
|
|
|
|
|
class FooInstance(Instance):
|
|
|
klass = Foo
|
|
|
|
|
|
class A(HasTraits):
|
|
|
inst = FooInstance()
|
|
|
|
|
|
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)
|
|
|
|
|
|
def test_this_in_container(self):
|
|
|
|
|
|
class Tree(HasTraits):
|
|
|
value = Unicode()
|
|
|
leaves = List(This())
|
|
|
|
|
|
tree = Tree(
|
|
|
value='foo',
|
|
|
leaves=[Tree('bar'), Tree('buzz')]
|
|
|
)
|
|
|
|
|
|
with self.assertRaises(TraitError):
|
|
|
tree.leaves = [1, 2]
|
|
|
|
|
|
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 test_allow_none(self):
|
|
|
if (hasattr(self, '_bad_values') and hasattr(self, '_good_values') and
|
|
|
None in self._bad_values):
|
|
|
trait=self.obj.traits()['value']
|
|
|
try:
|
|
|
trait.allow_none = True
|
|
|
self._bad_values.remove(None)
|
|
|
#skip coerce. Allow None casts None to None.
|
|
|
self.assign(None)
|
|
|
self.assertEqual(self.obj.value,None)
|
|
|
self.test_good_values()
|
|
|
self.test_bad_values()
|
|
|
finally:
|
|
|
#tear down
|
|
|
trait.allow_none = False
|
|
|
self._bad_values.append(None)
|
|
|
|
|
|
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 UnionTrait(HasTraits):
|
|
|
|
|
|
value = Union([Type(), Bool()])
|
|
|
|
|
|
class UnionTraitTest(TraitTestBase):
|
|
|
|
|
|
obj = UnionTrait(value='IPython.utils.ipstruct.Struct')
|
|
|
_good_values = [int, float, True]
|
|
|
_bad_values = [[], (0,), 1j]
|
|
|
|
|
|
class OrTrait(HasTraits):
|
|
|
|
|
|
value = Bool() | Unicode()
|
|
|
|
|
|
class OrTraitTest(TraitTestBase):
|
|
|
|
|
|
obj = OrTrait()
|
|
|
_good_values = [True, False, 'ten']
|
|
|
_bad_values = [[], (0,), 1j]
|
|
|
|
|
|
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]",
|
|
|
None, 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.", None]
|
|
|
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), None]
|
|
|
|
|
|
class ListTrait(HasTraits):
|
|
|
|
|
|
value = List(Int)
|
|
|
|
|
|
class TestList(TraitTestBase):
|
|
|
|
|
|
obj = ListTrait()
|
|
|
|
|
|
_default_value = []
|
|
|
_good_values = [[], [1], list(range(10)), (1,2)]
|
|
|
_bad_values = [10, [1,'a'], 'a']
|
|
|
|
|
|
def coerce(self, value):
|
|
|
if value is not None:
|
|
|
value = list(value)
|
|
|
return value
|
|
|
|
|
|
class Foo(object):
|
|
|
pass
|
|
|
|
|
|
class NoneInstanceListTrait(HasTraits):
|
|
|
|
|
|
value = List(Instance(Foo, allow_none=False))
|
|
|
|
|
|
class TestNoneInstanceList(TraitTestBase):
|
|
|
|
|
|
obj = NoneInstanceListTrait()
|
|
|
|
|
|
_default_value = []
|
|
|
_good_values = [[Foo(), Foo()], []]
|
|
|
_bad_values = [[None], [Foo(), None]]
|
|
|
|
|
|
|
|
|
class InstanceListTrait(HasTraits):
|
|
|
|
|
|
value = List(Instance(__name__+'.Foo'))
|
|
|
|
|
|
class TestInstanceList(TraitTestBase):
|
|
|
|
|
|
obj = InstanceListTrait()
|
|
|
|
|
|
def test_klass(self):
|
|
|
"""Test that the instance klass is properly assigned."""
|
|
|
self.assertIs(self.obj.traits()['value']._trait.klass, Foo)
|
|
|
|
|
|
_default_value = []
|
|
|
_good_values = [[Foo(), Foo(), None], []]
|
|
|
_bad_values = [['1', 2,], '1', [Foo], None]
|
|
|
|
|
|
class UnionListTrait(HasTraits):
|
|
|
|
|
|
value = List(Int() | Bool())
|
|
|
|
|
|
class TestUnionListTrait(HasTraits):
|
|
|
|
|
|
obj = UnionListTrait()
|
|
|
|
|
|
_default_value = []
|
|
|
_good_values = [[True, 1], [False, True]]
|
|
|
_bad_values = [[1, 'True'], False]
|
|
|
|
|
|
|
|
|
class LenListTrait(HasTraits):
|
|
|
|
|
|
value = List(Int, [0], minlen=1, maxlen=2)
|
|
|
|
|
|
class TestLenList(TraitTestBase):
|
|
|
|
|
|
obj = LenListTrait()
|
|
|
|
|
|
_default_value = [0]
|
|
|
_good_values = [[1], [1,2], (1,2)]
|
|
|
_bad_values = [10, [1,'a'], 'a', [], list(range(3))]
|
|
|
|
|
|
def coerce(self, value):
|
|
|
if value is not None:
|
|
|
value = list(value)
|
|
|
return value
|
|
|
|
|
|
class TupleTrait(HasTraits):
|
|
|
|
|
|
value = Tuple(Int(allow_none=True))
|
|
|
|
|
|
class TestTupleTrait(TraitTestBase):
|
|
|
|
|
|
obj = TupleTrait()
|
|
|
|
|
|
_default_value = None
|
|
|
_good_values = [(1,), None, (0,), [1], (None,)]
|
|
|
_bad_values = [10, (1,2), ('a'), ()]
|
|
|
|
|
|
def coerce(self, value):
|
|
|
if value is not None:
|
|
|
value = tuple(value)
|
|
|
return value
|
|
|
|
|
|
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, [1], (0,), tuple(range(5)), tuple('hello'), ('a',5), ()]
|
|
|
_bad_values = [10, 'hello', {}]
|
|
|
|
|
|
def coerce(self, value):
|
|
|
if value is not None:
|
|
|
value = tuple(value)
|
|
|
return value
|
|
|
|
|
|
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 = ['(', 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 ValidatedDictTrait(HasTraits):
|
|
|
|
|
|
value = Dict(Unicode())
|
|
|
|
|
|
class TestInstanceDict(TraitTestBase):
|
|
|
|
|
|
obj = ValidatedDictTrait()
|
|
|
|
|
|
_default_value = {}
|
|
|
_good_values = [{'0': 'foo'}, {'1': 'bar'}]
|
|
|
_bad_values = [{'0': 0}, {'1': 1}]
|
|
|
|
|
|
|
|
|
def test_dict_default_value():
|
|
|
"""Check that the `{}` default value of the Dict traitlet constructor is
|
|
|
actually copied."""
|
|
|
|
|
|
d1, d2 = Dict(), Dict()
|
|
|
nt.assert_false(d1.get_default_value() is d2.get_default_value())
|
|
|
|
|
|
|
|
|
class TestValidationHook(TestCase):
|
|
|
|
|
|
def test_parity_trait(self):
|
|
|
"""Verify that the early validation hook is effective"""
|
|
|
|
|
|
class Parity(HasTraits):
|
|
|
|
|
|
value = Int(0)
|
|
|
parity = Enum(['odd', 'even'], default_value='even', allow_none=False)
|
|
|
|
|
|
def _value_validate(self, value, trait):
|
|
|
if self.parity == 'even' and value % 2:
|
|
|
raise TraitError('Expected an even number')
|
|
|
if self.parity == 'odd' and (value % 2 == 0):
|
|
|
raise TraitError('Expected an odd number')
|
|
|
return value
|
|
|
|
|
|
u = Parity()
|
|
|
u.parity = 'odd'
|
|
|
u.value = 1 # OK
|
|
|
with self.assertRaises(TraitError):
|
|
|
u.value = 2 # Trait Error
|
|
|
|
|
|
u.parity = 'even'
|
|
|
u.value = 2 # OK
|
|
|
|
|
|
|
|
|
class TestLink(TestCase):
|
|
|
|
|
|
def test_connect_same(self):
|
|
|
"""Verify two traitlets of the same type can be linked together using link."""
|
|
|
|
|
|
# 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 = link((a, 'value'), (b, 'value'))
|
|
|
|
|
|
# Make sure the values are the same at the point of linking.
|
|
|
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_link_different(self):
|
|
|
"""Verify two traitlets of different types can be linked together using link."""
|
|
|
|
|
|
# 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 = link((a, 'value'), (b, 'count'))
|
|
|
|
|
|
# Make sure the values are the same at the point of linking.
|
|
|
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_unlink(self):
|
|
|
"""Verify two linked traitlets can be unlinked."""
|
|
|
|
|
|
# Create two simple classes with Int traitlets.
|
|
|
class A(HasTraits):
|
|
|
value = Int()
|
|
|
a = A(value=9)
|
|
|
b = A(value=8)
|
|
|
|
|
|
# Connect the two classes.
|
|
|
c = link((a, 'value'), (b, 'value'))
|
|
|
a.value = 4
|
|
|
c.unlink()
|
|
|
|
|
|
# Change one of the values to make sure they don't stay in sync.
|
|
|
a.value = 5
|
|
|
self.assertNotEqual(a.value, b.value)
|
|
|
|
|
|
def test_callbacks(self):
|
|
|
"""Verify two linked 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')
|
|
|
|
|
|
# Connect the two classes.
|
|
|
c = link((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[:]
|
|
|
|
|
|
class TestDirectionalLink(TestCase):
|
|
|
def test_connect_same(self):
|
|
|
"""Verify two traitlets of the same type can be linked together using directional_link."""
|
|
|
|
|
|
# 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 = directional_link((a, 'value'), (b, 'value'))
|
|
|
|
|
|
# Make sure the values are the same at the point of linking.
|
|
|
self.assertEqual(a.value, b.value)
|
|
|
|
|
|
# Change one the value of the source and check that it synchronizes the target.
|
|
|
a.value = 5
|
|
|
self.assertEqual(b.value, 5)
|
|
|
# Change one the value of the target and check that it has no impact on the source
|
|
|
b.value = 6
|
|
|
self.assertEqual(a.value, 5)
|
|
|
|
|
|
def test_link_different(self):
|
|
|
"""Verify two traitlets of different types can be linked together using link."""
|
|
|
|
|
|
# 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 = directional_link((a, 'value'), (b, 'count'))
|
|
|
|
|
|
# Make sure the values are the same at the point of linking.
|
|
|
self.assertEqual(a.value, b.count)
|
|
|
|
|
|
# Change one the value of the source and check that it synchronizes the target.
|
|
|
a.value = 5
|
|
|
self.assertEqual(b.count, 5)
|
|
|
# Change one the value of the target and check that it has no impact on the source
|
|
|
b.value = 6
|
|
|
self.assertEqual(a.value, 5)
|
|
|
|
|
|
def test_unlink(self):
|
|
|
"""Verify two linked traitlets can be unlinked."""
|
|
|
|
|
|
# Create two simple classes with Int traitlets.
|
|
|
class A(HasTraits):
|
|
|
value = Int()
|
|
|
a = A(value=9)
|
|
|
b = A(value=8)
|
|
|
|
|
|
# Connect the two classes.
|
|
|
c = directional_link((a, 'value'), (b, 'value'))
|
|
|
a.value = 4
|
|
|
c.unlink()
|
|
|
|
|
|
# Change one of the values to make sure they don't stay in sync.
|
|
|
a.value = 5
|
|
|
self.assertNotEqual(a.value, b.value)
|
|
|
|
|
|
class Pickleable(HasTraits):
|
|
|
i = Int()
|
|
|
j = Int()
|
|
|
|
|
|
def _i_default(self):
|
|
|
return 1
|
|
|
|
|
|
def _i_changed(self, name, old, new):
|
|
|
self.j = new
|
|
|
|
|
|
def test_pickle_hastraits():
|
|
|
c = Pickleable()
|
|
|
for protocol in range(pickle.HIGHEST_PROTOCOL + 1):
|
|
|
p = pickle.dumps(c, protocol)
|
|
|
c2 = pickle.loads(p)
|
|
|
nt.assert_equal(c2.i, c.i)
|
|
|
nt.assert_equal(c2.j, c.j)
|
|
|
|
|
|
c.i = 5
|
|
|
for protocol in range(pickle.HIGHEST_PROTOCOL + 1):
|
|
|
p = pickle.dumps(c, protocol)
|
|
|
c2 = pickle.loads(p)
|
|
|
nt.assert_equal(c2.i, c.i)
|
|
|
nt.assert_equal(c2.j, c.j)
|
|
|
|
|
|
|
|
|
class OrderTraits(HasTraits):
|
|
|
notified = Dict()
|
|
|
|
|
|
a = Unicode()
|
|
|
b = Unicode()
|
|
|
c = Unicode()
|
|
|
d = Unicode()
|
|
|
e = Unicode()
|
|
|
f = Unicode()
|
|
|
g = Unicode()
|
|
|
h = Unicode()
|
|
|
i = Unicode()
|
|
|
j = Unicode()
|
|
|
k = Unicode()
|
|
|
l = Unicode()
|
|
|
|
|
|
def _notify(self, name, old, new):
|
|
|
"""check the value of all traits when each trait change is triggered
|
|
|
|
|
|
This verifies that the values are not sensitive
|
|
|
to dict ordering when loaded from kwargs
|
|
|
"""
|
|
|
# check the value of the other traits
|
|
|
# when a given trait change notification fires
|
|
|
self.notified[name] = {
|
|
|
c: getattr(self, c) for c in 'abcdefghijkl'
|
|
|
}
|
|
|
|
|
|
def __init__(self, **kwargs):
|
|
|
self.on_trait_change(self._notify)
|
|
|
super(OrderTraits, self).__init__(**kwargs)
|
|
|
|
|
|
def test_notification_order():
|
|
|
d = {c:c for c in 'abcdefghijkl'}
|
|
|
obj = OrderTraits()
|
|
|
nt.assert_equal(obj.notified, {})
|
|
|
obj = OrderTraits(**d)
|
|
|
notifications = {
|
|
|
c: d for c in 'abcdefghijkl'
|
|
|
}
|
|
|
nt.assert_equal(obj.notified, notifications)
|
|
|
|
|
|
|
|
|
class TestEventful(TestCase):
|
|
|
|
|
|
def test_list(self):
|
|
|
"""Does the EventfulList work?"""
|
|
|
event_cache = []
|
|
|
|
|
|
class A(HasTraits):
|
|
|
x = EventfulList([c for c in 'abc'])
|
|
|
a = A()
|
|
|
a.x.on_events(lambda i, x: event_cache.append('insert'), \
|
|
|
lambda i, x: event_cache.append('set'), \
|
|
|
lambda i: event_cache.append('del'), \
|
|
|
lambda: event_cache.append('reverse'), \
|
|
|
lambda *p, **k: event_cache.append('sort'))
|
|
|
|
|
|
a.x.remove('c')
|
|
|
# ab
|
|
|
a.x.insert(0, 'z')
|
|
|
# zab
|
|
|
del a.x[1]
|
|
|
# zb
|
|
|
a.x.reverse()
|
|
|
# bz
|
|
|
a.x[1] = 'o'
|
|
|
# bo
|
|
|
a.x.append('a')
|
|
|
# boa
|
|
|
a.x.sort()
|
|
|
# abo
|
|
|
|
|
|
# Were the correct events captured?
|
|
|
self.assertEqual(event_cache, ['del', 'insert', 'del', 'reverse', 'set', 'set', 'sort'])
|
|
|
|
|
|
# Is the output correct?
|
|
|
self.assertEqual(a.x, [c for c in 'abo'])
|
|
|
|
|
|
def test_dict(self):
|
|
|
"""Does the EventfulDict work?"""
|
|
|
event_cache = []
|
|
|
|
|
|
class A(HasTraits):
|
|
|
x = EventfulDict({c: c for c in 'abc'})
|
|
|
a = A()
|
|
|
a.x.on_events(lambda k, v: event_cache.append('add'), \
|
|
|
lambda k, v: event_cache.append('set'), \
|
|
|
lambda k: event_cache.append('del'))
|
|
|
|
|
|
del a.x['c']
|
|
|
# ab
|
|
|
a.x['z'] = 1
|
|
|
# abz
|
|
|
a.x['z'] = 'z'
|
|
|
# abz
|
|
|
a.x.pop('a')
|
|
|
# bz
|
|
|
|
|
|
# Were the correct events captured?
|
|
|
self.assertEqual(event_cache, ['del', 'add', 'set', 'del'])
|
|
|
|
|
|
# Is the output correct?
|
|
|
self.assertEqual(a.x, {c: c for c in 'bz'})
|
|
|
|
|
|
###
|
|
|
# Traits for Forward Declaration Tests
|
|
|
###
|
|
|
class ForwardDeclaredInstanceTrait(HasTraits):
|
|
|
|
|
|
value = ForwardDeclaredInstance('ForwardDeclaredBar')
|
|
|
|
|
|
class ForwardDeclaredTypeTrait(HasTraits):
|
|
|
|
|
|
value = ForwardDeclaredType('ForwardDeclaredBar')
|
|
|
|
|
|
class ForwardDeclaredInstanceListTrait(HasTraits):
|
|
|
|
|
|
value = List(ForwardDeclaredInstance('ForwardDeclaredBar'))
|
|
|
|
|
|
class ForwardDeclaredTypeListTrait(HasTraits):
|
|
|
|
|
|
value = List(ForwardDeclaredType('ForwardDeclaredBar'))
|
|
|
###
|
|
|
# End Traits for Forward Declaration Tests
|
|
|
###
|
|
|
|
|
|
###
|
|
|
# Classes for Forward Declaration Tests
|
|
|
###
|
|
|
class ForwardDeclaredBar(object):
|
|
|
pass
|
|
|
|
|
|
class ForwardDeclaredBarSub(ForwardDeclaredBar):
|
|
|
pass
|
|
|
###
|
|
|
# End Classes for Forward Declaration Tests
|
|
|
###
|
|
|
|
|
|
###
|
|
|
# Forward Declaration Tests
|
|
|
###
|
|
|
class TestForwardDeclaredInstanceTrait(TraitTestBase):
|
|
|
|
|
|
obj = ForwardDeclaredInstanceTrait()
|
|
|
_default_value = None
|
|
|
_good_values = [None, ForwardDeclaredBar(), ForwardDeclaredBarSub()]
|
|
|
_bad_values = ['foo', 3, ForwardDeclaredBar, ForwardDeclaredBarSub]
|
|
|
|
|
|
class TestForwardDeclaredTypeTrait(TraitTestBase):
|
|
|
|
|
|
obj = ForwardDeclaredTypeTrait()
|
|
|
_default_value = None
|
|
|
_good_values = [None, ForwardDeclaredBar, ForwardDeclaredBarSub]
|
|
|
_bad_values = ['foo', 3, ForwardDeclaredBar(), ForwardDeclaredBarSub()]
|
|
|
|
|
|
class TestForwardDeclaredInstanceList(TraitTestBase):
|
|
|
|
|
|
obj = ForwardDeclaredInstanceListTrait()
|
|
|
|
|
|
def test_klass(self):
|
|
|
"""Test that the instance klass is properly assigned."""
|
|
|
self.assertIs(self.obj.traits()['value']._trait.klass, ForwardDeclaredBar)
|
|
|
|
|
|
_default_value = []
|
|
|
_good_values = [
|
|
|
[ForwardDeclaredBar(), ForwardDeclaredBarSub(), None],
|
|
|
[None],
|
|
|
[],
|
|
|
]
|
|
|
_bad_values = [
|
|
|
ForwardDeclaredBar(),
|
|
|
[ForwardDeclaredBar(), 3],
|
|
|
'1',
|
|
|
# Note that this is the type, not an instance.
|
|
|
[ForwardDeclaredBar],
|
|
|
None,
|
|
|
]
|
|
|
|
|
|
class TestForwardDeclaredTypeList(TraitTestBase):
|
|
|
|
|
|
obj = ForwardDeclaredTypeListTrait()
|
|
|
|
|
|
def test_klass(self):
|
|
|
"""Test that the instance klass is properly assigned."""
|
|
|
self.assertIs(self.obj.traits()['value']._trait.klass, ForwardDeclaredBar)
|
|
|
|
|
|
_default_value = []
|
|
|
_good_values = [
|
|
|
[ForwardDeclaredBar, ForwardDeclaredBarSub, None],
|
|
|
[],
|
|
|
[None],
|
|
|
]
|
|
|
_bad_values = [
|
|
|
ForwardDeclaredBar,
|
|
|
[ForwardDeclaredBar, 3],
|
|
|
'1',
|
|
|
# Note that this is an instance, not the type.
|
|
|
[ForwardDeclaredBar()],
|
|
|
None,
|
|
|
]
|
|
|
###
|
|
|
# End Forward Declaration Tests
|
|
|
###
|
|
|
|
