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2822 lines
73 KiB
2822 lines
73 KiB
# encoding: utf-8
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"""Tests for traitlets.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 ._warnings import expected_warnings
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from unittest import TestCase
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import pytest
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from pytest import mark
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from traitlets import (
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HasTraits,
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MetaHasTraits,
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TraitType,
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Any,
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Bool,
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CBytes,
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Dict,
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Enum,
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Int,
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CInt,
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Long,
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CLong,
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Integer,
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Float,
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CFloat,
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Complex,
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Bytes,
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Unicode,
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TraitError,
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Union,
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Callable,
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All,
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Undefined,
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Type,
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This,
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Instance,
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TCPAddress,
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List,
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Tuple,
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ObjectName,
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DottedObjectName,
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CRegExp,
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link,
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directional_link,
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ForwardDeclaredType,
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ForwardDeclaredInstance,
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validate,
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observe,
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default,
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observe_compat,
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BaseDescriptor,
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HasDescriptors,
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CUnicode,
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)
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from traitlets.utils import cast_unicode
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def change_dict(*ordered_values):
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change_names = ('name', 'old', 'new', 'owner', 'type')
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return dict(zip(change_names, ordered_values))
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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_change(self, change):
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self._notify_name = change['name']
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self._notify_old = change['old']
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self._notify_new = change['new']
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self._notify_type = change['type']
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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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assert a.a is 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, getattr, B(), 'tt')
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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_deprecated_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(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.x, 20)
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self.assertEqual(b._trait_values, {'x': 20})
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c = C()
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self.assertEqual(c._trait_values, {})
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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(a.x, 11)
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self.assertEqual(a._trait_values, {'x': 11})
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def test_deprecated_method_warnings(self):
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with expected_warnings([]):
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class ShouldntWarn(HasTraits):
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x = Integer()
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@default('x')
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def _x_default(self):
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return 10
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@validate('x')
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def _x_validate(self, proposal):
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return proposal.value
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@observe('x')
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def _x_changed(self, change):
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pass
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obj = ShouldntWarn()
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obj.x = 5
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assert obj.x == 5
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with expected_warnings(['@validate', '@observe']) as w:
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class ShouldWarn(HasTraits):
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x = Integer()
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def _x_default(self):
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return 10
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def _x_validate(self, value, _):
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return value
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def _x_changed(self):
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pass
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obj = ShouldWarn()
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obj.x = 5
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assert obj.x == 5
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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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@default('x')
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def _default_x(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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@default('x')
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def _default_x(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(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.x, 20)
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self.assertEqual(b._trait_values, {'x': 20})
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c = C()
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self.assertEqual(c._trait_values, {})
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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(a.x, 11)
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self.assertEqual(a._trait_values, {'x': 11})
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def test_tag_metadata(self):
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class MyIntTT(TraitType):
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metadata = {'a': 1, 'b': 2}
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a = MyIntTT(10).tag(b=3, c=4)
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self.assertEqual(a.metadata, {'a': 1, 'b': 3, 'c': 4})
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def test_metadata_localized_instance(self):
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class MyIntTT(TraitType):
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metadata = {'a': 1, 'b': 2}
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a = MyIntTT(10)
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b = MyIntTT(10)
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a.metadata['c'] = 3
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# make sure that changing a's metadata didn't change b's metadata
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self.assertNotIn('c', b.metadata)
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def test_union_metadata(self):
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class Foo(HasTraits):
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bar = (Int().tag(ta=1) | Dict().tag(ta=2, ti='b')).tag(ti='a')
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foo = Foo()
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# At this point, no value has been set for bar, so value-specific
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# is not set.
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self.assertEqual(foo.trait_metadata('bar', 'ta'), None)
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self.assertEqual(foo.trait_metadata('bar', 'ti'), 'a')
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foo.bar = {}
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self.assertEqual(foo.trait_metadata('bar', 'ta'), 2)
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self.assertEqual(foo.trait_metadata('bar', 'ti'), 'b')
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foo.bar = 1
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self.assertEqual(foo.trait_metadata('bar', 'ta'), 1)
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self.assertEqual(foo.trait_metadata('bar', 'ti'), 'a')
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def test_union_default_value(self):
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class Foo(HasTraits):
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bar = Union([Dict(), Int()], default_value=1)
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foo = Foo()
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self.assertEqual(foo.bar, 1)
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def test_union_validation_priority(self):
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class Foo(HasTraits):
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bar = Union([CInt(), Unicode()])
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foo = Foo()
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foo.bar = '1'
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# validation in order of the TraitTypes given
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self.assertEqual(foo.bar, 1)
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def test_union_trait_default_value(self):
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class Foo(HasTraits):
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bar = Union([Dict(), Int()])
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self.assertEqual(Foo().bar, {})
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def test_deprecated_metadata_access(self):
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class MyIntTT(TraitType):
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metadata = {'a': 1, 'b': 2}
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a = MyIntTT(10)
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with expected_warnings(["use the instance .metadata dictionary directly"]*2):
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a.set_metadata('key', 'value')
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v = a.get_metadata('key')
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self.assertEqual(v, 'value')
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with expected_warnings(["use the instance .help string directly"]*2):
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a.set_metadata('help', 'some help')
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v = a.get_metadata('help')
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self.assertEqual(v, 'some help')
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def test_trait_types_deprecated(self):
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with expected_warnings(["Traits should be given as instances"]):
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class C(HasTraits):
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t = Int
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def test_trait_types_list_deprecated(self):
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with expected_warnings(["Traits should be given as instances"]):
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class C(HasTraits):
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t = List(Int)
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def test_trait_types_tuple_deprecated(self):
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with expected_warnings(["Traits should be given as instances"]):
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class C(HasTraits):
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t = Tuple(Int)
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def test_trait_types_dict_deprecated(self):
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with expected_warnings(["Traits should be given as instances"]):
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class C(HasTraits):
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t = Dict(Int)
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class TestHasDescriptorsMeta(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 TestHasDescriptors(TestCase):
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def test_setup_instance(self):
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class FooDescriptor(BaseDescriptor):
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def instance_init(self, inst):
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foo = inst.foo # instance should have the attr
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class HasFooDescriptors(HasDescriptors):
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fd = FooDescriptor()
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def setup_instance(self, *args, **kwargs):
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self.foo = kwargs.get('foo', None)
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super(HasFooDescriptors, self).setup_instance(*args, **kwargs)
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hfd = HasFooDescriptors(foo='bar')
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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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def callback4(name, old, new, obj):
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self.cb = (name, old, new, obj)
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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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a.on_trait_change(callback4, 'a')
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a.a = 100000
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self.assertEqual(self.cb,('a',10000,100000,a))
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self.assertEqual(len(a._trait_notifiers['a']['change']), 1)
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a.on_trait_change(callback4, 'a', remove=True)
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self.assertEqual(len(a._trait_notifiers['a']['change']), 0)
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|
|
def test_notify_only_once(self):
|
|
|
|
class A(HasTraits):
|
|
listen_to = ['a']
|
|
|
|
a = Int(0)
|
|
b = 0
|
|
|
|
def __init__(self, **kwargs):
|
|
super(A, self).__init__(**kwargs)
|
|
self.on_trait_change(self.listener1, ['a'])
|
|
|
|
def listener1(self, name, old, new):
|
|
self.b += 1
|
|
|
|
class B(A):
|
|
|
|
c = 0
|
|
d = 0
|
|
|
|
def __init__(self, **kwargs):
|
|
super(B, self).__init__(**kwargs)
|
|
self.on_trait_change(self.listener2)
|
|
|
|
def listener2(self, name, old, new):
|
|
self.c += 1
|
|
|
|
def _a_changed(self, name, old, new):
|
|
self.d += 1
|
|
|
|
b = B()
|
|
b.a += 1
|
|
self.assertEqual(b.b, b.c)
|
|
self.assertEqual(b.b, b.d)
|
|
b.a += 1
|
|
self.assertEqual(b.b, b.c)
|
|
self.assertEqual(b.b, b.d)
|
|
|
|
class TestObserveDecorator(TestCase):
|
|
|
|
def setUp(self):
|
|
self._notify1 = []
|
|
self._notify2 = []
|
|
|
|
def notify1(self, change):
|
|
self._notify1.append(change)
|
|
|
|
def notify2(self, change):
|
|
self._notify2.append(change)
|
|
|
|
def test_notify_all(self):
|
|
|
|
class A(HasTraits):
|
|
a = Int()
|
|
b = Float()
|
|
|
|
a = A()
|
|
a.observe(self.notify1)
|
|
a.a = 0
|
|
self.assertEqual(len(self._notify1),0)
|
|
a.b = 0.0
|
|
self.assertEqual(len(self._notify1),0)
|
|
a.a = 10
|
|
change = change_dict('a', 0, 10, a, 'change')
|
|
self.assertTrue(change in self._notify1)
|
|
a.b = 10.0
|
|
change = change_dict('b', 0.0, 10.0, a, 'change')
|
|
self.assertTrue(change in self._notify1)
|
|
self.assertRaises(TraitError,setattr,a,'a','bad string')
|
|
self.assertRaises(TraitError,setattr,a,'b','bad string')
|
|
self._notify1 = []
|
|
a.unobserve(self.notify1)
|
|
a.a = 20
|
|
a.b = 20.0
|
|
self.assertEqual(len(self._notify1),0)
|
|
|
|
def test_notify_one(self):
|
|
|
|
class A(HasTraits):
|
|
a = Int()
|
|
b = Float()
|
|
|
|
a = A()
|
|
a.observe(self.notify1, 'a')
|
|
a.a = 0
|
|
self.assertEqual(len(self._notify1),0)
|
|
a.a = 10
|
|
change = change_dict('a', 0, 10, a, 'change')
|
|
self.assertTrue(change in self._notify1)
|
|
self.assertRaises(TraitError,setattr,a,'a','bad string')
|
|
|
|
def test_subclass(self):
|
|
|
|
class A(HasTraits):
|
|
a = Int()
|
|
|
|
class B(A):
|
|
b = Float()
|
|
|
|
b = B()
|
|
self.assertEqual(b.a,0)
|
|
self.assertEqual(b.b,0.0)
|
|
b.a = 100
|
|
b.b = 100.0
|
|
self.assertEqual(b.a,100)
|
|
self.assertEqual(b.b,100.0)
|
|
|
|
def test_notify_subclass(self):
|
|
|
|
class A(HasTraits):
|
|
a = Int()
|
|
|
|
class B(A):
|
|
b = Float()
|
|
|
|
b = B()
|
|
b.observe(self.notify1, 'a')
|
|
b.observe(self.notify2, 'b')
|
|
b.a = 0
|
|
b.b = 0.0
|
|
self.assertEqual(len(self._notify1),0)
|
|
self.assertEqual(len(self._notify2),0)
|
|
b.a = 10
|
|
b.b = 10.0
|
|
change = change_dict('a', 0, 10, b, 'change')
|
|
self.assertTrue(change in self._notify1)
|
|
change = change_dict('b', 0.0, 10.0, b, 'change')
|
|
self.assertTrue(change in self._notify2)
|
|
|
|
def test_static_notify(self):
|
|
|
|
class A(HasTraits):
|
|
a = Int()
|
|
b = Int()
|
|
_notify1 = []
|
|
_notify_any = []
|
|
|
|
@observe('a')
|
|
def _a_changed(self, change):
|
|
self._notify1.append(change)
|
|
|
|
@observe(All)
|
|
def _any_changed(self, change):
|
|
self._notify_any.append(change)
|
|
|
|
a = A()
|
|
a.a = 0
|
|
self.assertEqual(len(a._notify1),0)
|
|
a.a = 10
|
|
change = change_dict('a', 0, 10, a, 'change')
|
|
self.assertTrue(change in a._notify1)
|
|
a.b = 1
|
|
self.assertEqual(len(a._notify_any), 2)
|
|
change = change_dict('b', 0, 1, a, 'change')
|
|
self.assertTrue(change in a._notify_any)
|
|
|
|
class B(A):
|
|
b = Float()
|
|
_notify2 = []
|
|
@observe('b')
|
|
def _b_changed(self, change):
|
|
self._notify2.append(change)
|
|
|
|
b = B()
|
|
b.a = 10
|
|
b.b = 10.0
|
|
change = change_dict('a', 0, 10, b, 'change')
|
|
self.assertTrue(change in b._notify1)
|
|
change = change_dict('b', 0.0, 10.0, b, 'change')
|
|
self.assertTrue(change in b._notify2)
|
|
|
|
def test_notify_args(self):
|
|
|
|
def callback0():
|
|
self.cb = ()
|
|
def callback1(change):
|
|
self.cb = change
|
|
|
|
class A(HasTraits):
|
|
a = Int()
|
|
|
|
a = A()
|
|
a.on_trait_change(callback0, 'a')
|
|
a.a = 10
|
|
self.assertEqual(self.cb,())
|
|
a.unobserve(callback0, 'a')
|
|
|
|
a.observe(callback1, 'a')
|
|
a.a = 100
|
|
change = change_dict('a', 10, 100, a, 'change')
|
|
self.assertEqual(self.cb, change)
|
|
self.assertEqual(len(a._trait_notifiers['a']['change']), 1)
|
|
a.unobserve(callback1, 'a')
|
|
|
|
self.assertEqual(len(a._trait_notifiers['a']['change']), 0)
|
|
|
|
def test_notify_only_once(self):
|
|
|
|
class A(HasTraits):
|
|
listen_to = ['a']
|
|
|
|
a = Int(0)
|
|
b = 0
|
|
|
|
def __init__(self, **kwargs):
|
|
super(A, self).__init__(**kwargs)
|
|
self.observe(self.listener1, ['a'])
|
|
|
|
def listener1(self, change):
|
|
self.b += 1
|
|
|
|
class B(A):
|
|
|
|
c = 0
|
|
d = 0
|
|
|
|
def __init__(self, **kwargs):
|
|
super(B, self).__init__(**kwargs)
|
|
self.observe(self.listener2)
|
|
|
|
def listener2(self, change):
|
|
self.c += 1
|
|
|
|
@observe('a')
|
|
def _a_changed(self, change):
|
|
self.d += 1
|
|
|
|
b = B()
|
|
b.a += 1
|
|
self.assertEqual(b.b, b.c)
|
|
self.assertEqual(b.b, b.d)
|
|
b.a += 1
|
|
self.assertEqual(b.b, b.c)
|
|
self.assertEqual(b.b, b.d)
|
|
|
|
|
|
class TestHasTraits(TestCase):
|
|
|
|
def test_trait_names(self):
|
|
class A(HasTraits):
|
|
i = Int()
|
|
f = Float()
|
|
a = A()
|
|
self.assertEqual(sorted(a.trait_names()),['f','i'])
|
|
self.assertEqual(sorted(A.class_trait_names()),['f','i'])
|
|
self.assertTrue(a.has_trait('f'))
|
|
self.assertFalse(a.has_trait('g'))
|
|
|
|
def test_trait_has_value(self):
|
|
class A(HasTraits):
|
|
i = Int()
|
|
f = Float()
|
|
a = A()
|
|
self.assertFalse(a.trait_has_value('f'))
|
|
self.assertFalse(a.trait_has_value('g'))
|
|
a.i = 1
|
|
a.f
|
|
self.assertTrue(a.trait_has_value('i'))
|
|
self.assertTrue(a.trait_has_value('f'))
|
|
|
|
def test_trait_metadata_deprecated(self):
|
|
with expected_warnings([r'metadata should be set using the \.tag\(\) method']):
|
|
class A(HasTraits):
|
|
i = Int(config_key='MY_VALUE')
|
|
a = A()
|
|
self.assertEqual(a.trait_metadata('i','config_key'), 'MY_VALUE')
|
|
|
|
def test_trait_metadata(self):
|
|
class A(HasTraits):
|
|
i = Int().tag(config_key='MY_VALUE')
|
|
a = A()
|
|
self.assertEqual(a.trait_metadata('i','config_key'), 'MY_VALUE')
|
|
|
|
def test_trait_metadata_default(self):
|
|
class A(HasTraits):
|
|
i = Int()
|
|
a = A()
|
|
self.assertEqual(a.trait_metadata('i', 'config_key'), None)
|
|
self.assertEqual(a.trait_metadata('i', 'config_key', 'default'), 'default')
|
|
|
|
def test_traits(self):
|
|
class A(HasTraits):
|
|
i = Int()
|
|
f = Float()
|
|
a = A()
|
|
self.assertEqual(a.traits(), dict(i=A.i, f=A.f))
|
|
self.assertEqual(A.class_traits(), dict(i=A.i, f=A.f))
|
|
|
|
def test_traits_metadata(self):
|
|
class A(HasTraits):
|
|
i = Int().tag(config_key='VALUE1', other_thing='VALUE2')
|
|
f = Float().tag(config_key='VALUE3', other_thing='VALUE2')
|
|
j = Int(0)
|
|
a = A()
|
|
self.assertEqual(a.traits(), dict(i=A.i, f=A.f, j=A.j))
|
|
traits = a.traits(config_key='VALUE1', other_thing='VALUE2')
|
|
self.assertEqual(traits, dict(i=A.i))
|
|
|
|
# This passes, but it shouldn't because I am replicating a bug in
|
|
# traits.
|
|
traits = a.traits(config_key=lambda v: True)
|
|
self.assertEqual(traits, dict(i=A.i, f=A.f, j=A.j))
|
|
|
|
def test_traits_metadata_deprecated(self):
|
|
with expected_warnings([r'metadata should be set using the \.tag\(\) method']*2):
|
|
class A(HasTraits):
|
|
i = Int(config_key='VALUE1', other_thing='VALUE2')
|
|
f = Float(config_key='VALUE3', other_thing='VALUE2')
|
|
j = Int(0)
|
|
a = A()
|
|
self.assertEqual(a.traits(), dict(i=A.i, f=A.f, j=A.j))
|
|
traits = a.traits(config_key='VALUE1', other_thing='VALUE2')
|
|
self.assertEqual(traits, dict(i=A.i))
|
|
|
|
# This passes, but it shouldn't because I am replicating a bug in
|
|
# traits.
|
|
traits = a.traits(config_key=lambda v: True)
|
|
self.assertEqual(traits, dict(i=A.i, f=A.f, j=A.j))
|
|
|
|
|
|
def test_init(self):
|
|
class A(HasTraits):
|
|
i = Int()
|
|
x = Float()
|
|
a = A(i=1, x=10.0)
|
|
self.assertEqual(a.i, 1)
|
|
self.assertEqual(a.x, 10.0)
|
|
|
|
def test_positional_args(self):
|
|
class A(HasTraits):
|
|
i = Int(0)
|
|
def __init__(self, i):
|
|
super(A, self).__init__()
|
|
self.i = i
|
|
|
|
a = A(5)
|
|
self.assertEqual(a.i, 5)
|
|
# should raise TypeError if no positional arg given
|
|
self.assertRaises(TypeError, A)
|
|
|
|
#-----------------------------------------------------------------------------
|
|
# Tests for specific trait types
|
|
#-----------------------------------------------------------------------------
|
|
|
|
|
|
class TestType(TestCase):
|
|
|
|
def test_default(self):
|
|
|
|
class B(object): pass
|
|
class A(HasTraits):
|
|
klass = Type(allow_none=True)
|
|
|
|
a = A()
|
|
self.assertEqual(a.klass, object)
|
|
|
|
a.klass = B
|
|
self.assertEqual(a.klass, B)
|
|
self.assertRaises(TraitError, setattr, a, 'klass', 10)
|
|
|
|
def test_default_options(self):
|
|
|
|
class B(object): pass
|
|
class C(B): pass
|
|
class A(HasTraits):
|
|
# Different possible combinations of options for default_value
|
|
# and klass. default_value=None is only valid with allow_none=True.
|
|
k1 = Type()
|
|
k2 = Type(None, allow_none=True)
|
|
k3 = Type(B)
|
|
k4 = Type(klass=B)
|
|
k5 = Type(default_value=None, klass=B, allow_none=True)
|
|
k6 = Type(default_value=C, klass=B)
|
|
|
|
self.assertIs(A.k1.default_value, object)
|
|
self.assertIs(A.k1.klass, object)
|
|
self.assertIs(A.k2.default_value, None)
|
|
self.assertIs(A.k2.klass, object)
|
|
self.assertIs(A.k3.default_value, B)
|
|
self.assertIs(A.k3.klass, B)
|
|
self.assertIs(A.k4.default_value, B)
|
|
self.assertIs(A.k4.klass, B)
|
|
self.assertIs(A.k5.default_value, None)
|
|
self.assertIs(A.k5.klass, B)
|
|
self.assertIs(A.k6.default_value, C)
|
|
self.assertIs(A.k6.klass, B)
|
|
|
|
a = A()
|
|
self.assertIs(a.k1, object)
|
|
self.assertIs(a.k2, None)
|
|
self.assertIs(a.k3, B)
|
|
self.assertIs(a.k4, B)
|
|
self.assertIs(a.k5, None)
|
|
self.assertIs(a.k6, C)
|
|
|
|
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)
|
|
|
|
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)
|
|
|
|
self.assertRaises(TraitError, getattr, C(), 'klass')
|
|
|
|
def test_str_klass(self):
|
|
|
|
class A(HasTraits):
|
|
klass = Type('ipython_genutils.ipstruct.Struct')
|
|
|
|
from ipython_genutils.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_genutils.ipstruct.Struct')
|
|
from ipython_genutils.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, allow_none=True)
|
|
|
|
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(allow_none=True)
|
|
|
|
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, allow_none=True)
|
|
c = C()
|
|
self.assertTrue(c.inst is None)
|
|
|
|
def test_bad_default(self):
|
|
class Foo(object): pass
|
|
|
|
class A(HasTraits):
|
|
inst = Instance(Foo)
|
|
|
|
a = A()
|
|
with self.assertRaises(TraitError):
|
|
a.inst
|
|
|
|
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(value='bar'), Tree(value='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', [10], {'ten': 10},(10,), None, 1j]
|
|
_bad_values = []
|
|
|
|
class UnionTrait(HasTraits):
|
|
|
|
value = Union([Type(), Bool()])
|
|
|
|
class UnionTraitTest(TraitTestBase):
|
|
|
|
obj = UnionTrait(value='ipython_genutils.ipstruct.Struct')
|
|
_good_values = [int, float, True]
|
|
_bad_values = [[], (0,), 1j]
|
|
|
|
class CallableTrait(HasTraits):
|
|
|
|
value = Callable()
|
|
|
|
class CallableTraitTest(TraitTestBase):
|
|
|
|
obj = CallableTrait(value=lambda x: type(x))
|
|
_good_values = [int, sorted, lambda x: print(x)]
|
|
_bad_values = [[], 1, '']
|
|
|
|
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, min=-100)
|
|
|
|
class TestInt(TraitTestBase):
|
|
|
|
obj = IntTrait()
|
|
_default_value = 99
|
|
_good_values = [10, -10]
|
|
_bad_values = ['ten', [10], {'ten': 10}, (10,), None, 1j,
|
|
10.1, -10.1, '10L', '-10L', '10.1', '-10.1',
|
|
'10', '-10', -200]
|
|
|
|
|
|
class CIntTrait(HasTraits):
|
|
value = CInt('5')
|
|
|
|
class TestCInt(TraitTestBase):
|
|
obj = CIntTrait()
|
|
|
|
_default_value = 5
|
|
_good_values = ['10', '-10', 10, 10.0, -10.0, 10.1]
|
|
_bad_values = ['ten', [10], {'ten': 10},(10,),
|
|
None, 1j, '10.1']
|
|
|
|
def coerce(self, n):
|
|
return int(n)
|
|
|
|
|
|
class MinBoundCIntTrait(HasTraits):
|
|
value = CInt('5', min=3)
|
|
|
|
class TestMinBoundCInt(TestCInt):
|
|
obj = MinBoundCIntTrait()
|
|
|
|
_default_value = 5
|
|
_good_values = [3, 3.0, '3']
|
|
_bad_values = [2.6, 2, -3, -3.0]
|
|
|
|
|
|
class LongTrait(HasTraits):
|
|
|
|
value = Long(99)
|
|
|
|
class TestLong(TraitTestBase):
|
|
|
|
obj = LongTrait()
|
|
|
|
_default_value = 99
|
|
_good_values = [10, -10]
|
|
_bad_values = ['ten', [10], {'ten': 10},(10,),
|
|
None, 1j, 10.1, -10.1, '10', '-10', '10L', '-10L', '10.1',
|
|
'-10.1']
|
|
|
|
|
|
class MinBoundLongTrait(HasTraits):
|
|
value = Long(99, min=5)
|
|
|
|
class TestMinBoundLong(TraitTestBase):
|
|
obj = MinBoundLongTrait()
|
|
|
|
_default_value = 99
|
|
_good_values = [5, 10]
|
|
_bad_values = [4, -10]
|
|
|
|
|
|
class MaxBoundLongTrait(HasTraits):
|
|
value = Long(5, max=10)
|
|
|
|
class TestMaxBoundLong(TraitTestBase):
|
|
obj = MaxBoundLongTrait()
|
|
|
|
_default_value = 5
|
|
_good_values = [10, -2]
|
|
_bad_values = [11, 20]
|
|
|
|
|
|
class CLongTrait(HasTraits):
|
|
value = CLong('5')
|
|
|
|
class TestCLong(TraitTestBase):
|
|
obj = CLongTrait()
|
|
|
|
_default_value = 5
|
|
_good_values = ['10', '-10', 10, 10.0, -10.0, 10.1]
|
|
_bad_values = ['ten', [10], {'ten': 10},(10,),
|
|
None, 1j, '10.1']
|
|
|
|
def coerce(self, n):
|
|
return int(n)
|
|
|
|
|
|
class MaxBoundCLongTrait(HasTraits):
|
|
value = CLong('5', max=10)
|
|
|
|
class TestMaxBoundCLong(TestCLong):
|
|
obj = MaxBoundCLongTrait()
|
|
|
|
_default_value = 5
|
|
_good_values = [10, '10', 10.3]
|
|
_bad_values = [11.0, '11']
|
|
|
|
|
|
class IntegerTrait(HasTraits):
|
|
value = Integer(1)
|
|
|
|
class TestInteger(TestLong):
|
|
obj = IntegerTrait()
|
|
_default_value = 1
|
|
|
|
def coerce(self, n):
|
|
return int(n)
|
|
|
|
|
|
class MinBoundIntegerTrait(HasTraits):
|
|
value = Integer(5, min=3)
|
|
|
|
class TestMinBoundInteger(TraitTestBase):
|
|
obj = MinBoundIntegerTrait()
|
|
|
|
_default_value = 5
|
|
_good_values = 3, 20
|
|
_bad_values = [2, -10]
|
|
|
|
|
|
class MaxBoundIntegerTrait(HasTraits):
|
|
value = Integer(1, max=3)
|
|
|
|
class TestMaxBoundInteger(TraitTestBase):
|
|
obj = MaxBoundIntegerTrait()
|
|
|
|
_default_value = 1
|
|
_good_values = 3, -2
|
|
_bad_values = [4, 10]
|
|
|
|
|
|
class FloatTrait(HasTraits):
|
|
|
|
value = Float(99.0, max=200.0)
|
|
|
|
class TestFloat(TraitTestBase):
|
|
|
|
obj = FloatTrait()
|
|
|
|
_default_value = 99.0
|
|
_good_values = [10, -10, 10.1, -10.1]
|
|
_bad_values = ['ten', [10], {'ten': 10}, (10,), None,
|
|
1j, '10', '-10', '10L', '-10L', '10.1', '-10.1', 201.0]
|
|
|
|
|
|
class CFloatTrait(HasTraits):
|
|
|
|
value = CFloat('99.0', max=200.0)
|
|
|
|
class TestCFloat(TraitTestBase):
|
|
|
|
obj = CFloatTrait()
|
|
|
|
_default_value = 99.0
|
|
_good_values = [10, 10.0, 10.5, '10.0', '10', '-10']
|
|
_bad_values = ['ten', [10], {'ten': 10}, (10,), None, 1j,
|
|
200.1, '200.1']
|
|
|
|
def coerce(self, v):
|
|
return float(v)
|
|
|
|
|
|
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 = ['10L', '-10L', 'ten', [10], {'ten': 10},(10,), None]
|
|
|
|
|
|
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, 'string']
|
|
|
|
|
|
class UnicodeTrait(HasTraits):
|
|
|
|
value = Unicode('unicode')
|
|
|
|
|
|
class TestUnicode(TraitTestBase):
|
|
|
|
obj = UnicodeTrait()
|
|
|
|
_default_value = 'unicode'
|
|
_good_values = ['10', '-10', '10L', '-10L', '10.1',
|
|
'-10.1', '', 'string', "€", b"bytestring"]
|
|
_bad_values = [10, -10, 10.1, -10.1, 1j,
|
|
[10], ['ten'], {'ten': 10},(10,), None]
|
|
|
|
def coerce(self, v):
|
|
return cast_unicode(v)
|
|
|
|
|
|
class ObjectNameTrait(HasTraits):
|
|
value = ObjectName("abc")
|
|
|
|
class TestObjectName(TraitTestBase):
|
|
obj = ObjectNameTrait()
|
|
|
|
_default_value = "abc"
|
|
_good_values = ["a", "gh", "g9", "g_", "_G", "a345_"]
|
|
_bad_values = [1, "", "€", "9g", "!", "#abc", "aj@", "a.b", "a()", "a[0]",
|
|
None, object(), object]
|
|
_good_values.append("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"]
|
|
_bad_values = [1, "abc.€", "_.@", ".", ".abc", "abc.", ".abc.", None]
|
|
|
|
_good_values.append("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))
|
|
|
|
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()], []]
|
|
_bad_values = [['1', 2,], '1', [Foo], None]
|
|
|
|
class UnionListTrait(HasTraits):
|
|
|
|
value = List(Int() | Bool())
|
|
|
|
class TestUnionListTrait(TraitTestBase):
|
|
|
|
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), default_value=(1,))
|
|
|
|
class TestTupleTrait(TraitTestBase):
|
|
|
|
obj = TupleTrait()
|
|
|
|
_default_value = (1,)
|
|
_good_values = [(1,), (0,), [1]]
|
|
_bad_values = [10, (1, 2), ('a'), (), None]
|
|
|
|
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,), [1], (0,), tuple(range(5)), tuple('hello'), ('a',5), ()]
|
|
_bad_values = [10, 'hello', {}, None]
|
|
|
|
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, '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
|
|
assert d == c.value
|
|
assert c.value is d
|
|
|
|
|
|
class UniformlyValueValidatedDictTrait(HasTraits):
|
|
|
|
value = Dict(trait=Unicode(),
|
|
default_value={'foo': '1'})
|
|
|
|
|
|
class TestInstanceUniformlyValueValidatedDict(TraitTestBase):
|
|
|
|
obj = UniformlyValueValidatedDictTrait()
|
|
|
|
_default_value = {'foo': '1'}
|
|
_good_values = [{'foo': '0', 'bar': '1'}]
|
|
_bad_values = [{'foo': 0, 'bar': '1'}]
|
|
|
|
|
|
class NonuniformlyValueValidatedDictTrait(HasTraits):
|
|
|
|
value = Dict(traits={'foo': Int()},
|
|
default_value={'foo': 1})
|
|
|
|
|
|
class TestInstanceNonuniformlyValueValidatedDict(TraitTestBase):
|
|
|
|
obj = NonuniformlyValueValidatedDictTrait()
|
|
|
|
_default_value = {'foo': 1}
|
|
_good_values = [{'foo': 0, 'bar': '1'}, {'foo': 0, 'bar': 1}]
|
|
_bad_values = [{'foo': '0', 'bar': '1'}]
|
|
|
|
|
|
class KeyValidatedDictTrait(HasTraits):
|
|
|
|
value = Dict(key_trait=Unicode(),
|
|
default_value={'foo': '1'})
|
|
|
|
|
|
class TestInstanceKeyValidatedDict(TraitTestBase):
|
|
|
|
obj = KeyValidatedDictTrait()
|
|
|
|
_default_value = {'foo': '1'}
|
|
_good_values = [{'foo': '0', 'bar': '1'}]
|
|
_bad_values = [{'foo': '0', 0: '1'}]
|
|
|
|
|
|
class FullyValidatedDictTrait(HasTraits):
|
|
|
|
value = Dict(trait=Unicode(),
|
|
key_trait=Unicode(),
|
|
traits={'foo': Int()},
|
|
default_value={'foo': 1})
|
|
|
|
|
|
class TestInstanceFullyValidatedDict(TraitTestBase):
|
|
|
|
obj = FullyValidatedDictTrait()
|
|
|
|
_default_value = {'foo': 1}
|
|
_good_values = [{'foo': 0, 'bar': '1'}, {'foo': 1, 'bar': '2'}]
|
|
_bad_values = [{'foo': 0, 'bar': 1}, {'foo': '0', 'bar': '1'}, {'foo': 0, 0: '1'}]
|
|
|
|
|
|
def test_dict_default_value():
|
|
"""Check that the `{}` default value of the Dict traitlet constructor is
|
|
actually copied."""
|
|
|
|
class Foo(HasTraits):
|
|
d1 = Dict()
|
|
d2 = Dict()
|
|
|
|
foo = Foo()
|
|
assert foo.d1 == {}
|
|
assert foo.d2 == {}
|
|
assert foo.d1 is not foo.d2
|
|
|
|
|
|
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')
|
|
|
|
@validate('value')
|
|
def _value_validate(self, proposal):
|
|
value = proposal['value']
|
|
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
|
|
|
|
def test_multiple_validate(self):
|
|
"""Verify that we can register the same validator to multiple names"""
|
|
|
|
class OddEven(HasTraits):
|
|
|
|
odd = Int(1)
|
|
even = Int(0)
|
|
|
|
@validate('odd', 'even')
|
|
def check_valid(self, proposal):
|
|
if proposal['trait'].name == 'odd' and not proposal['value'] % 2:
|
|
raise TraitError('odd should be odd')
|
|
if proposal['trait'].name == 'even' and proposal['value'] % 2:
|
|
raise TraitError('even should be even')
|
|
|
|
u = OddEven()
|
|
u.odd = 3 # OK
|
|
with self.assertRaises(TraitError):
|
|
u.odd = 2 # Trait Error
|
|
|
|
u.even = 2 # OK
|
|
with self.assertRaises(TraitError):
|
|
u.even = 3 # Trait Error
|
|
|
|
|
|
|
|
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_link(self):
|
|
"""Verify two linked traitlets can be unlinked and relinked."""
|
|
|
|
# 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)
|
|
c.link()
|
|
self.assertEqual(a.value, b.value)
|
|
a.value += 1
|
|
self.assertEqual(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[:]
|
|
|
|
def test_tranform(self):
|
|
"""Test transform 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'),
|
|
transform=(lambda x: 2 * x, lambda x: int(x / 2.)))
|
|
|
|
# Make sure the values are correct at the point of linking.
|
|
self.assertEqual(b.value, 2 * a.value)
|
|
|
|
# Change one the value of the source and check that it modifies the target.
|
|
a.value = 5
|
|
self.assertEqual(b.value, 10)
|
|
# Change one the value of the target and check that it modifies the
|
|
# source.
|
|
b.value = 6
|
|
self.assertEqual(a.value, 3)
|
|
|
|
def test_link_broken_at_source(self):
|
|
class MyClass(HasTraits):
|
|
i = Int()
|
|
j = Int()
|
|
|
|
@observe("j")
|
|
def another_update(self, change):
|
|
self.i = change.new * 2
|
|
|
|
mc = MyClass()
|
|
l = link((mc, "i"), (mc, "j"))
|
|
self.assertRaises(TraitError, setattr, mc, 'i', 2)
|
|
|
|
def test_link_broken_at_target(self):
|
|
class MyClass(HasTraits):
|
|
i =Int()
|
|
j = Int()
|
|
|
|
@observe("i")
|
|
def another_update(self, change):
|
|
self.j = change.new * 2
|
|
|
|
mc = MyClass()
|
|
l = link((mc, "i"), (mc, "j"))
|
|
self.assertRaises(TraitError, setattr, mc, 'j', 2)
|
|
|
|
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_tranform(self):
|
|
"""Test transform 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'), lambda x: 2 * x)
|
|
|
|
# Make sure the values are correct at the point of linking.
|
|
self.assertEqual(b.value, 2 * a.value)
|
|
|
|
# Change one the value of the source and check that it modifies the target.
|
|
a.value = 5
|
|
self.assertEqual(b.value, 10)
|
|
# 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_link(self):
|
|
"""Verify two linked traitlets can be unlinked and relinked."""
|
|
|
|
# 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)
|
|
c.link()
|
|
self.assertEqual(a.value, b.value)
|
|
a.value += 1
|
|
self.assertEqual(a.value, b.value)
|
|
|
|
class Pickleable(HasTraits):
|
|
|
|
i = Int()
|
|
@observe('i')
|
|
def _i_changed(self, change): pass
|
|
@validate('i')
|
|
def _i_validate(self, commit):
|
|
return commit['value']
|
|
|
|
j = Int()
|
|
|
|
def __init__(self):
|
|
with self.hold_trait_notifications():
|
|
self.i = 1
|
|
self.on_trait_change(self._i_changed, 'i')
|
|
|
|
def test_pickle_hastraits():
|
|
c = Pickleable()
|
|
for protocol in range(pickle.HIGHEST_PROTOCOL + 1):
|
|
p = pickle.dumps(c, protocol)
|
|
c2 = pickle.loads(p)
|
|
assert c2.i == c.i
|
|
assert c2.j == c.j
|
|
|
|
c.i = 5
|
|
for protocol in range(pickle.HIGHEST_PROTOCOL + 1):
|
|
p = pickle.dumps(c, protocol)
|
|
c2 = pickle.loads(p)
|
|
assert c2.i == c.i
|
|
assert c2.j == c.j
|
|
|
|
|
|
def test_hold_trait_notifications():
|
|
changes = []
|
|
|
|
class Test(HasTraits):
|
|
a = Integer(0)
|
|
b = Integer(0)
|
|
|
|
def _a_changed(self, name, old, new):
|
|
changes.append((old, new))
|
|
|
|
def _b_validate(self, value, trait):
|
|
if value != 0:
|
|
raise TraitError('Only 0 is a valid value')
|
|
return value
|
|
|
|
# Test context manager and nesting
|
|
t = Test()
|
|
with t.hold_trait_notifications():
|
|
with t.hold_trait_notifications():
|
|
t.a = 1
|
|
assert t.a == 1
|
|
assert changes == []
|
|
t.a = 2
|
|
assert t.a == 2
|
|
with t.hold_trait_notifications():
|
|
t.a = 3
|
|
assert t.a == 3
|
|
assert changes == []
|
|
t.a = 4
|
|
assert t.a == 4
|
|
assert changes == []
|
|
t.a = 4
|
|
assert t.a == 4
|
|
assert changes == []
|
|
|
|
assert changes == [(0, 4)]
|
|
# Test roll-back
|
|
try:
|
|
with t.hold_trait_notifications():
|
|
t.b = 1 # raises a Trait error
|
|
except:
|
|
pass
|
|
assert t.b == 0
|
|
|
|
|
|
class RollBack(HasTraits):
|
|
bar = Int()
|
|
def _bar_validate(self, value, trait):
|
|
if value:
|
|
raise TraitError('foobar')
|
|
return value
|
|
|
|
|
|
class TestRollback(TestCase):
|
|
|
|
def test_roll_back(self):
|
|
|
|
def assign_rollback():
|
|
RollBack(bar=1)
|
|
|
|
self.assertRaises(TraitError, assign_rollback)
|
|
|
|
|
|
class CacheModification(HasTraits):
|
|
foo = Int()
|
|
bar = Int()
|
|
|
|
def _bar_validate(self, value, trait):
|
|
self.foo = value
|
|
return value
|
|
|
|
def _foo_validate(self, value, trait):
|
|
self.bar = value
|
|
return value
|
|
|
|
|
|
def test_cache_modification():
|
|
CacheModification(foo=1)
|
|
CacheModification(bar=1)
|
|
|
|
|
|
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()
|
|
assert obj.notified == {}
|
|
obj = OrderTraits(**d)
|
|
notifications = {
|
|
c: d for c in 'abcdefghijkl'
|
|
}
|
|
assert obj.notified == notifications
|
|
|
|
|
|
|
|
###
|
|
# Traits for Forward Declaration Tests
|
|
###
|
|
class ForwardDeclaredInstanceTrait(HasTraits):
|
|
|
|
value = ForwardDeclaredInstance('ForwardDeclaredBar', allow_none=True)
|
|
|
|
class ForwardDeclaredTypeTrait(HasTraits):
|
|
|
|
value = ForwardDeclaredType('ForwardDeclaredBar', allow_none=True)
|
|
|
|
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()],
|
|
[],
|
|
]
|
|
_bad_values = [
|
|
ForwardDeclaredBar(),
|
|
[ForwardDeclaredBar(), 3, None],
|
|
'1',
|
|
# Note that this is the type, not an instance.
|
|
[ForwardDeclaredBar],
|
|
[None],
|
|
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],
|
|
[],
|
|
]
|
|
_bad_values = [
|
|
ForwardDeclaredBar,
|
|
[ForwardDeclaredBar, 3],
|
|
'1',
|
|
# Note that this is an instance, not the type.
|
|
[ForwardDeclaredBar()],
|
|
[None],
|
|
None,
|
|
]
|
|
###
|
|
# End Forward Declaration Tests
|
|
###
|
|
|
|
class TestDynamicTraits(TestCase):
|
|
|
|
def setUp(self):
|
|
self._notify1 = []
|
|
|
|
def notify1(self, name, old, new):
|
|
self._notify1.append((name, old, new))
|
|
|
|
def test_notify_all(self):
|
|
|
|
class A(HasTraits):
|
|
pass
|
|
|
|
a = A()
|
|
self.assertTrue(not hasattr(a, 'x'))
|
|
self.assertTrue(not hasattr(a, 'y'))
|
|
|
|
# Dynamically add trait x.
|
|
a.add_traits(x=Int())
|
|
self.assertTrue(hasattr(a, 'x'))
|
|
self.assertTrue(isinstance(a, (A, )))
|
|
|
|
# Dynamically add trait y.
|
|
a.add_traits(y=Float())
|
|
self.assertTrue(hasattr(a, 'y'))
|
|
self.assertTrue(isinstance(a, (A, )))
|
|
self.assertEqual(a.__class__.__name__, A.__name__)
|
|
|
|
# Create a new instance and verify that x and y
|
|
# aren't defined.
|
|
b = A()
|
|
self.assertTrue(not hasattr(b, 'x'))
|
|
self.assertTrue(not hasattr(b, 'y'))
|
|
|
|
# Verify that notification works like normal.
|
|
a.on_trait_change(self.notify1)
|
|
a.x = 0
|
|
self.assertEqual(len(self._notify1), 0)
|
|
a.y = 0.0
|
|
self.assertEqual(len(self._notify1), 0)
|
|
a.x = 10
|
|
self.assertTrue(('x', 0, 10) in self._notify1)
|
|
a.y = 10.0
|
|
self.assertTrue(('y', 0.0, 10.0) in self._notify1)
|
|
self.assertRaises(TraitError, setattr, a, 'x', 'bad string')
|
|
self.assertRaises(TraitError, setattr, a, 'y', 'bad string')
|
|
self._notify1 = []
|
|
a.on_trait_change(self.notify1, remove=True)
|
|
a.x = 20
|
|
a.y = 20.0
|
|
self.assertEqual(len(self._notify1), 0)
|
|
|
|
|
|
def test_enum_no_default():
|
|
class C(HasTraits):
|
|
t = Enum(['a', 'b'])
|
|
|
|
c = C()
|
|
c.t = 'a'
|
|
assert c.t == 'a'
|
|
|
|
c = C()
|
|
|
|
with pytest.raises(TraitError):
|
|
t = c.t
|
|
|
|
c = C(t='b')
|
|
assert c.t == 'b'
|
|
|
|
|
|
def test_default_value_repr():
|
|
class C(HasTraits):
|
|
t = Type('traitlets.HasTraits')
|
|
t2 = Type(HasTraits)
|
|
n = Integer(0)
|
|
lis = List()
|
|
d = Dict()
|
|
|
|
assert C.t.default_value_repr() == "'traitlets.HasTraits'"
|
|
assert C.t2.default_value_repr() == "'traitlets.traitlets.HasTraits'"
|
|
assert C.n.default_value_repr() == '0'
|
|
assert C.lis.default_value_repr() == '[]'
|
|
assert C.d.default_value_repr() == '{}'
|
|
|
|
|
|
class TransitionalClass(HasTraits):
|
|
|
|
d = Any()
|
|
@default('d')
|
|
def _d_default(self):
|
|
return TransitionalClass
|
|
|
|
parent_super = False
|
|
calls_super = Integer(0)
|
|
|
|
@default('calls_super')
|
|
def _calls_super_default(self):
|
|
return -1
|
|
|
|
@observe('calls_super')
|
|
@observe_compat
|
|
def _calls_super_changed(self, change):
|
|
self.parent_super = change
|
|
|
|
parent_override = False
|
|
overrides = Integer(0)
|
|
|
|
@observe('overrides')
|
|
@observe_compat
|
|
def _overrides_changed(self, change):
|
|
self.parent_override = change
|
|
|
|
|
|
class SubClass(TransitionalClass):
|
|
def _d_default(self):
|
|
return SubClass
|
|
|
|
subclass_super = False
|
|
def _calls_super_changed(self, name, old, new):
|
|
self.subclass_super = True
|
|
super(SubClass, self)._calls_super_changed(name, old, new)
|
|
|
|
subclass_override = False
|
|
def _overrides_changed(self, name, old, new):
|
|
self.subclass_override = True
|
|
|
|
|
|
def test_subclass_compat():
|
|
obj = SubClass()
|
|
obj.calls_super = 5
|
|
assert obj.parent_super
|
|
assert obj.subclass_super
|
|
obj.overrides = 5
|
|
assert obj.subclass_override
|
|
assert not obj.parent_override
|
|
assert obj.d is SubClass
|
|
|
|
|
|
class DefinesHandler(HasTraits):
|
|
parent_called = False
|
|
|
|
trait = Integer()
|
|
@observe('trait')
|
|
def handler(self, change):
|
|
self.parent_called = True
|
|
|
|
|
|
class OverridesHandler(DefinesHandler):
|
|
child_called = False
|
|
|
|
@observe('trait')
|
|
def handler(self, change):
|
|
self.child_called = True
|
|
|
|
|
|
def test_subclass_override_observer():
|
|
obj = OverridesHandler()
|
|
obj.trait = 5
|
|
assert obj.child_called
|
|
assert not obj.parent_called
|
|
|
|
|
|
class DoesntRegisterHandler(DefinesHandler):
|
|
child_called = False
|
|
|
|
def handler(self, change):
|
|
self.child_called = True
|
|
|
|
|
|
def test_subclass_override_not_registered():
|
|
"""Subclass that overrides observer and doesn't re-register unregisters both"""
|
|
obj = DoesntRegisterHandler()
|
|
obj.trait = 5
|
|
assert not obj.child_called
|
|
assert not obj.parent_called
|
|
|
|
|
|
class AddsHandler(DefinesHandler):
|
|
child_called = False
|
|
|
|
@observe('trait')
|
|
def child_handler(self, change):
|
|
self.child_called = True
|
|
|
|
def test_subclass_add_observer():
|
|
obj = AddsHandler()
|
|
obj.trait = 5
|
|
assert obj.child_called
|
|
assert obj.parent_called
|
|
|
|
|
|
def test_observe_iterables():
|
|
|
|
class C(HasTraits):
|
|
i = Integer()
|
|
s = Unicode()
|
|
|
|
c = C()
|
|
recorded = {}
|
|
def record(change):
|
|
recorded['change'] = change
|
|
|
|
# observe with names=set
|
|
c.observe(record, names={'i', 's'})
|
|
c.i = 5
|
|
assert recorded['change'].name == 'i'
|
|
assert recorded['change'].new == 5
|
|
c.s = 'hi'
|
|
assert recorded['change'].name == 's'
|
|
assert recorded['change'].new == 'hi'
|
|
|
|
# observe with names=custom container with iter, contains
|
|
class MyContainer(object):
|
|
def __init__(self, container):
|
|
self.container = container
|
|
|
|
def __iter__(self):
|
|
return iter(self.container)
|
|
|
|
def __contains__(self, key):
|
|
return key in self.container
|
|
|
|
c.observe(record, names=MyContainer({'i', 's'}))
|
|
c.i = 10
|
|
assert recorded['change'].name == 'i'
|
|
assert recorded['change'].new == 10
|
|
c.s = 'ok'
|
|
assert recorded['change'].name == 's'
|
|
assert recorded['change'].new == 'ok'
|
|
|
|
|
|
def test_super_args():
|
|
class SuperRecorder(object):
|
|
def __init__(self, *args, **kwargs):
|
|
self.super_args = args
|
|
self.super_kwargs = kwargs
|
|
|
|
class SuperHasTraits(HasTraits, SuperRecorder):
|
|
i = Integer()
|
|
|
|
obj = SuperHasTraits('a1', 'a2', b=10, i=5, c='x')
|
|
assert obj.i == 5
|
|
assert not hasattr(obj, 'b')
|
|
assert not hasattr(obj, 'c')
|
|
assert obj.super_args == ('a1' , 'a2')
|
|
assert obj.super_kwargs == {'b': 10 , 'c': 'x'}
|
|
|
|
def test_super_bad_args():
|
|
class SuperHasTraits(HasTraits):
|
|
a = Integer()
|
|
|
|
w = ["Passing unrecognized arguments"]
|
|
with expected_warnings(w):
|
|
obj = SuperHasTraits(a=1, b=2)
|
|
assert obj.a == 1
|
|
assert not hasattr(obj, 'b')
|
|
|
|
|
|
def test_default_mro():
|
|
"""Verify that default values follow mro"""
|
|
class Base(HasTraits):
|
|
trait = Unicode('base')
|
|
attr = 'base'
|
|
|
|
class A(Base):
|
|
pass
|
|
|
|
class B(Base):
|
|
trait = Unicode('B')
|
|
attr = 'B'
|
|
|
|
class AB(A, B):
|
|
pass
|
|
|
|
class BA(B, A):
|
|
pass
|
|
|
|
assert A().trait == 'base'
|
|
assert A().attr == 'base'
|
|
assert BA().trait == 'B'
|
|
assert BA().attr == 'B'
|
|
assert AB().trait == 'B'
|
|
assert AB().attr == 'B'
|
|
|
|
|
|
def test_cls_self_argument():
|
|
class X(HasTraits):
|
|
def __init__(__self, cls, self):
|
|
pass
|
|
|
|
x = X(cls=None, self=None)
|
|
|
|
|
|
def test_override_default():
|
|
class C(HasTraits):
|
|
a = Unicode('hard default')
|
|
def _a_default(self):
|
|
return 'default method'
|
|
|
|
C._a_default = lambda self: 'overridden'
|
|
c = C()
|
|
assert c.a == 'overridden'
|
|
|
|
def test_override_default_decorator():
|
|
class C(HasTraits):
|
|
a = Unicode('hard default')
|
|
@default('a')
|
|
def _a_default(self):
|
|
return 'default method'
|
|
|
|
C._a_default = lambda self: 'overridden'
|
|
c = C()
|
|
assert c.a == 'overridden'
|
|
|
|
def test_override_default_instance():
|
|
class C(HasTraits):
|
|
a = Unicode('hard default')
|
|
@default('a')
|
|
def _a_default(self):
|
|
return 'default method'
|
|
|
|
c = C()
|
|
c._a_default = lambda self: 'overridden'
|
|
assert c.a == 'overridden'
|
|
|
|
|
|
def test_copy_HasTraits():
|
|
from copy import copy
|
|
|
|
class C(HasTraits):
|
|
a = Int()
|
|
|
|
c = C(a=1)
|
|
assert c.a == 1
|
|
|
|
cc = copy(c)
|
|
cc.a = 2
|
|
assert cc.a == 2
|
|
assert c.a == 1
|
|
|
|
|
|
def _from_string_test(traittype, s, expected):
|
|
"""Run a test of trait.from_string"""
|
|
if isinstance(traittype, TraitType):
|
|
trait = traittype
|
|
else:
|
|
trait = traittype(allow_none=True)
|
|
if isinstance(s, list):
|
|
cast = trait.from_string_list
|
|
else:
|
|
cast = trait.from_string
|
|
if type(expected) is type and issubclass(expected, Exception):
|
|
with pytest.raises(expected):
|
|
value = cast(s)
|
|
trait.validate(None, value)
|
|
else:
|
|
value = cast(s)
|
|
assert value == expected
|
|
|
|
|
|
@pytest.mark.parametrize(
|
|
"s, expected",
|
|
[("xyz", "xyz"), ("1", "1"), ('"xx"', "xx"), ("'abc'", "abc"), ("None", None)],
|
|
)
|
|
def test_unicode_from_string(s, expected):
|
|
_from_string_test(Unicode, s, expected)
|
|
|
|
|
|
@pytest.mark.parametrize(
|
|
"s, expected",
|
|
[("xyz", "xyz"), ("1", "1"), ('"xx"', "xx"), ("'abc'", "abc"), ("None", None)],
|
|
)
|
|
def test_cunicode_from_string(s, expected):
|
|
_from_string_test(CUnicode, s, expected)
|
|
|
|
|
|
@pytest.mark.parametrize(
|
|
"s, expected",
|
|
[("xyz", b"xyz"), ("1", b"1"), ('b"xx"', b"xx"), ("b'abc'", b"abc"), ("None", None)],
|
|
)
|
|
def test_bytes_from_string(s, expected):
|
|
_from_string_test(Bytes, s, expected)
|
|
|
|
|
|
@pytest.mark.parametrize(
|
|
"s, expected",
|
|
[("xyz", b"xyz"), ("1", b"1"), ('b"xx"', b"xx"), ("b'abc'", b"abc"), ("None", None)],
|
|
)
|
|
def test_cbytes_from_string(s, expected):
|
|
_from_string_test(CBytes, s, expected)
|
|
|
|
|
|
@pytest.mark.parametrize(
|
|
"s, expected",
|
|
[("x", ValueError), ("1", 1), ("123", 123), ("2.0", ValueError), ("None", None)],
|
|
)
|
|
def test_int_from_string(s, expected):
|
|
_from_string_test(Integer, s, expected)
|
|
|
|
|
|
@pytest.mark.parametrize(
|
|
"s, expected",
|
|
[("x", ValueError), ("1", 1.0), ("123.5", 123.5), ("2.5", 2.5), ("None", None)],
|
|
)
|
|
def test_float_from_string(s, expected):
|
|
_from_string_test(Float, s, expected)
|
|
|
|
|
|
@pytest.mark.parametrize(
|
|
"s, expected",
|
|
[
|
|
("x", ValueError),
|
|
("1", 1.0),
|
|
("123.5", 123.5),
|
|
("2.5", 2.5),
|
|
("1+2j", 1 + 2j),
|
|
("None", None),
|
|
],
|
|
)
|
|
def test_complex_from_string(s, expected):
|
|
_from_string_test(Complex, s, expected)
|
|
|
|
|
|
@pytest.mark.parametrize(
|
|
"s, expected",
|
|
[
|
|
("true", True),
|
|
("TRUE", True),
|
|
("1", True),
|
|
("0", False),
|
|
("False", False),
|
|
("false", False),
|
|
("1.0", ValueError),
|
|
("None", None),
|
|
],
|
|
)
|
|
def test_bool_from_string(s, expected):
|
|
_from_string_test(Bool, s, expected)
|
|
|
|
|
|
@pytest.mark.parametrize(
|
|
"s, expected",
|
|
[
|
|
("{}", {}),
|
|
("1", TraitError),
|
|
("{1: 2}", {1: 2}),
|
|
('{"key": "value"}', {"key": "value"}),
|
|
("x", TraitError),
|
|
("None", None),
|
|
],
|
|
)
|
|
def test_dict_from_string(s, expected):
|
|
_from_string_test(Dict, s, expected)
|
|
|
|
|
|
@pytest.mark.parametrize(
|
|
"s, expected",
|
|
[
|
|
("[]", []),
|
|
('[1, 2, "x"]', [1, 2, "x"]),
|
|
(["1", "x"], ["1", "x"]),
|
|
(["None"], None),
|
|
],
|
|
)
|
|
def test_list_from_string(s, expected):
|
|
_from_string_test(List, s, expected)
|
|
|
|
|
|
@pytest.mark.parametrize(
|
|
"s, expected, value_trait",
|
|
[
|
|
(["1", "2", "3"], [1, 2, 3], Integer()),
|
|
(["x"], ValueError, Integer()),
|
|
(["1", "x"], ["1", "x"], Unicode()),
|
|
(["None"], [None], Unicode(allow_none=True)),
|
|
],
|
|
)
|
|
def test_list_items_from_string(s, expected, value_trait):
|
|
_from_string_test(List(value_trait), s, expected)
|
|
|
|
|
|
@pytest.mark.parametrize(
|
|
"s, expected",
|
|
[
|
|
("x", "x"),
|
|
("mod.submod", "mod.submod"),
|
|
("not an identifier", TraitError),
|
|
("1", "1"),
|
|
("None", None),
|
|
],
|
|
)
|
|
def test_object_from_string(s, expected):
|
|
_from_string_test(DottedObjectName, s, expected)
|
|
|
|
|
|
@pytest.mark.parametrize(
|
|
"s, expected",
|
|
[
|
|
("127.0.0.1:8000", ("127.0.0.1", 8000)),
|
|
("host.tld:80", ("host.tld", 80)),
|
|
("host:notaport", ValueError),
|
|
("127.0.0.1", ValueError),
|
|
("None", None),
|
|
],
|
|
)
|
|
def test_tcp_from_string(s, expected):
|
|
_from_string_test(TCPAddress, s, expected)
|