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# encoding: utf-8
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"""
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Tests for IPython.utils.traitlets.
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Authors:
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* Brian Granger
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* Enthought, Inc. Some of the code in this file comes from enthought.traits
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and is licensed under the BSD license. Also, many of the ideas also come
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from enthought.traits even though our implementation is very different.
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"""
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#-----------------------------------------------------------------------------
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# Copyright (C) 2008-2011 The IPython Development Team
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#
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# Distributed under the terms of the BSD License. The full license is in
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# the file COPYING, distributed as part of this software.
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#-----------------------------------------------------------------------------
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#-----------------------------------------------------------------------------
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# Imports
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#-----------------------------------------------------------------------------
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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, CBytes, Dict,
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Int, Long, Integer, Float, Complex, Bytes, Unicode, TraitError,
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Undefined, Type, This, Instance, TCPAddress, List, Tuple,
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ObjectName, DottedObjectName, CRegExp, link
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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_is_valid_for(self):
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class MyTT(TraitType):
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def is_valid_for(self, value):
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return True
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class A(HasTraits):
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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, 10)
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def test_value_for(self):
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class MyTT(TraitType):
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def value_for(self, value):
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return 20
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class A(HasTraits):
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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, 20)
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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_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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|
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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
|
|
|
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)), (1,2)]
|
|
|
_bad_values = [10, [1,'a'], 'a']
|
|
|
|
|
|
def coerce(self, value):
|
|
|
if value is not None:
|
|
|
value = list(value)
|
|
|
return value
|
|
|
|
|
|
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):
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value = Tuple(Int)
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class TestTupleTrait(TraitTestBase):
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obj = TupleTrait()
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_default_value = None
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_good_values = [(1,), None, (0,), [1]]
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_bad_values = [10, (1,2), ('a'), ()]
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def coerce(self, value):
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if value is not None:
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value = tuple(value)
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return value
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def test_invalid_args(self):
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self.assertRaises(TypeError, Tuple, 5)
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self.assertRaises(TypeError, Tuple, default_value='hello')
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t = Tuple(Int, CBytes, default_value=(1,5))
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class LooseTupleTrait(HasTraits):
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value = Tuple((1,2,3))
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class TestLooseTupleTrait(TraitTestBase):
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obj = LooseTupleTrait()
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_default_value = (1,2,3)
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_good_values = [(1,), None, [1], (0,), tuple(range(5)), tuple('hello'), ('a',5), ()]
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_bad_values = [10, 'hello', {}]
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def coerce(self, value):
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if value is not None:
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value = tuple(value)
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return value
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def test_invalid_args(self):
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self.assertRaises(TypeError, Tuple, 5)
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self.assertRaises(TypeError, Tuple, default_value='hello')
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t = Tuple(Int, CBytes, default_value=(1,5))
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class MultiTupleTrait(HasTraits):
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value = Tuple(Int, Bytes, default_value=[99,b'bottles'])
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class TestMultiTuple(TraitTestBase):
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obj = MultiTupleTrait()
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_default_value = (99,b'bottles')
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_good_values = [(1,b'a'), (2,b'b')]
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_bad_values = ((),10, b'a', (1,b'a',3), (b'a',1), (1, u'a'))
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class CRegExpTrait(HasTraits):
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value = CRegExp(r'')
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class TestCRegExp(TraitTestBase):
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def coerce(self, value):
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return re.compile(value)
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obj = CRegExpTrait()
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_default_value = re.compile(r'')
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_good_values = [r'\d+', re.compile(r'\d+')]
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_bad_values = [r'(', None, ()]
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class DictTrait(HasTraits):
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value = Dict()
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def test_dict_assignment():
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d = dict()
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c = DictTrait()
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c.value = d
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d['a'] = 5
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nt.assert_equal(d, c.value)
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nt.assert_true(c.value is d)
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class TestLink(TestCase):
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def test_connect_same(self):
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"""Verify two traitlets of the same type can be linked together using link."""
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# Create two simple classes with Int traitlets.
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class A(HasTraits):
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value = Int()
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a = A(value=9)
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b = A(value=8)
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# Conenct the two classes.
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c = link((a, 'value'), (b, 'value'))
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# Make sure the values are the same at the point of linking.
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self.assertEqual(a.value, b.value)
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# Change one of the values to make sure they stay in sync.
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a.value = 5
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self.assertEqual(a.value, b.value)
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b.value = 6
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self.assertEqual(a.value, b.value)
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def test_link_different(self):
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"""Verify two traitlets of different types can be linked together using link."""
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# Create two simple classes with Int traitlets.
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class A(HasTraits):
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value = Int()
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class B(HasTraits):
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count = Int()
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a = A(value=9)
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b = B(count=8)
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# Conenct the two classes.
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c = link((a, 'value'), (b, 'count'))
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# Make sure the values are the same at the point of linking.
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self.assertEqual(a.value, b.count)
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# Change one of the values to make sure they stay in sync.
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a.value = 5
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self.assertEqual(a.value, b.count)
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b.count = 4
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self.assertEqual(a.value, b.count)
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def test_unlink(self):
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"""Verify two linked traitlets can be unlinked."""
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# Create two simple classes with Int traitlets.
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class A(HasTraits):
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value = Int()
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a = A(value=9)
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b = A(value=8)
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# Connect the two classes.
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c = link((a, 'value'), (b, 'value'))
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a.value = 4
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c.unlink()
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# Change one of the values to make sure they don't stay in sync.
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a.value = 5
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self.assertNotEqual(a.value, b.value)
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def test_callbacks(self):
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"""Verify two linked traitlets have their callbacks called once."""
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# Create two simple classes with Int traitlets.
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class A(HasTraits):
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value = Int()
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class B(HasTraits):
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count = Int()
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a = A(value=9)
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b = B(count=8)
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# Register callbacks that count.
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callback_count = []
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def a_callback(name, old, new):
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callback_count.append('a')
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a.on_trait_change(a_callback, 'value')
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def b_callback(name, old, new):
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callback_count.append('b')
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b.on_trait_change(b_callback, 'count')
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# Connect the two classes.
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c = link((a, 'value'), (b, 'count'))
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# Make sure b's count was set to a's value once.
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self.assertEqual(''.join(callback_count), 'b')
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del callback_count[:]
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# Make sure a's value was set to b's count once.
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b.count = 5
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self.assertEqual(''.join(callback_count), 'ba')
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del callback_count[:]
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# Make sure b's count was set to a's value once.
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a.value = 4
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self.assertEqual(''.join(callback_count), 'ab')
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del callback_count[:]
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