/usr/share/pyshared/traits/tests/test_extended_trait_change.py is in python-traits 4.1.0-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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#
# Unit test case for testing HasTraits 'on_trait_change' support.
#
# Written by: David C. Morrill
#
# Date: 4/10/2007
#
# (c) Copyright 2007 by Enthought, Inc.
#
# This software is provided without warranty under the terms of the BSD
# license included in /LICENSE.txt and may be redistributed only
# under the conditions described in the aforementioned license. The license
# is also available online at http://www.enthought.com/licenses/BSD.txt
#
# Thanks for using Enthought open source!
#
#-------------------------------------------------------------------------------
#-------------------------------------------------------------------------------
""" Unit test case for testing HasTraits 'on_trait_change' support.
"""
#-------------------------------------------------------------------------------
# Imports:
#-------------------------------------------------------------------------------
from __future__ import absolute_import
import unittest
from nose import SkipTest
from ..api import (HasTraits, List, Dict, Int, Str, Any, Instance, Undefined,
TraitError, TraitListEvent, TraitDictEvent, push_exception_handler,
on_trait_change, Property, cached_property)
from ..trait_handlers import TraitListObject, TraitDictObject
#-------------------------------------------------------------------------------
# Test support classes:
#-------------------------------------------------------------------------------
class ArgCheckBase ( HasTraits ):
value = Int( 0 )
int1 = Int( 0, test = True )
int2 = Int( 0 )
int3 = Int( 0, test = True )
tint1 = Int( 0 )
tint2 = Int( 0, test = True )
tint3 = Int( 0 )
calls = Int( 0 )
tc = Any
class ArgCheckSimple ( ArgCheckBase ):
def arg_check0 ( self ):
self.calls += 1
def arg_check1 ( self, new ):
self.calls += 1
self.tc.assertEqual( new, self.value )
def arg_check2 ( self, name, new ):
self.calls += 1
self.tc.assertEqual( name, 'value' )
self.tc.assertEqual( new, self.value )
def arg_check3 ( self, object, name, new ):
self.calls += 1
self.tc.assert_( object is self )
self.tc.assertEqual( name, 'value' )
self.tc.assertEqual( new, self.value )
def arg_check4 ( self, object, name, old, new ):
self.calls += 1
self.tc.assert_( object is self )
self.tc.assertEqual( name, 'value' )
self.tc.assertEqual( old, (self.value - 1) )
self.tc.assertEqual( new, self.value )
class ArgCheckDecorator ( ArgCheckBase ):
@on_trait_change( 'value' )
def arg_check0 ( self ):
self.calls += 1
@on_trait_change( 'value' )
def arg_check1 ( self, new ):
self.calls += 1
self.tc.assertEqual( new, self.value )
@on_trait_change( 'value' )
def arg_check2 ( self, name, new ):
self.calls += 1
self.tc.assertEqual( name, 'value' )
self.tc.assertEqual( new, self.value )
@on_trait_change( 'value' )
def arg_check3 ( self, object, name, new ):
self.calls += 1
self.tc.assert_( object is self )
self.tc.assertEqual( name, 'value' )
self.tc.assertEqual( new, self.value )
@on_trait_change( 'value' )
def arg_check4 ( self, object, name, old, new ):
self.calls += 1
self.tc.assert_( object is self )
self.tc.assertEqual( name, 'value' )
self.tc.assertEqual( old, (self.value - 1) )
self.tc.assertEqual( new, self.value )
class Instance1 ( HasTraits ):
ref = Instance( ArgCheckBase, () )
calls = Int( 0 )
exp_object = Any
exp_name = Any
dst_name = Any
exp_old = Any
exp_new = Any
dst_new = Any
tc = Any
@on_trait_change( 'ref.value' )
def arg_check0 ( self ):
self.calls += 1
@on_trait_change( 'ref.value' )
def arg_check1 ( self, new ):
self.calls += 1
self.tc.assertEqual( new, self.dst_new )
@on_trait_change( 'ref.value' )
def arg_check2 ( self, name, new ):
self.calls += 1
self.tc.assertEqual( name, self.dst_name )
self.tc.assertEqual( new, self.dst_new )
@on_trait_change( 'ref.value' )
def arg_check3 ( self, object, name, new ):
self.calls += 1
self.tc.assert_( object is self.exp_object )
self.tc.assertEqual( name, self.exp_name )
self.tc.assertEqual( new, self.exp_new )
@on_trait_change( 'ref.value' )
def arg_check4 ( self, object, name, old, new ):
self.calls += 1
self.tc.assert_( object is self.exp_object )
self.tc.assertEqual( name, self.exp_name )
self.tc.assertEqual( old, self.exp_old )
self.tc.assertEqual( new, self.exp_new )
class List1 ( HasTraits ):
refs = List( ArgCheckBase )
calls = Int( 0 )
exp_object = Any
exp_name = Any
type_old = Any
exp_old = Any
type_new = Any
exp_new = Any
tc = Any
@on_trait_change( 'refs.value' )
def arg_check0 ( self ):
self.calls += 1
@on_trait_change( 'refs.value' )
def arg_check3 ( self, object, name, new ):
self.calls += 1
self.tc.assert_( object is self.exp_object )
self.tc.assertEqual( name, self.exp_name )
if self.type_new is None:
self.tc.assertEqual( new, self.exp_new )
else:
self.tc.assert_( isinstance( new, self.type_new ) )
@on_trait_change( 'refs.value' )
def arg_check4 ( self, object, name, old, new ):
self.calls += 1
self.tc.assert_( object is self.exp_object )
self.tc.assertEqual( name, self.exp_name )
if self.type_old is None:
self.tc.assertEqual( old, self.exp_old )
else:
self.tc.assert_( isinstance( old, self.type_old ) )
if self.type_new is None:
self.tc.assertEqual( new, self.exp_new )
else:
self.tc.assert_( isinstance( new, self.type_new ) )
class List2 ( HasTraits ):
refs = List( ArgCheckBase )
calls = Int( 0 )
exp_new = Any
tc = Any
@on_trait_change( 'refs.value' )
def arg_check1 ( self, new ):
self.calls += 1
self.tc.assertEqual( new, self.exp_new )
class List3 ( HasTraits ):
refs = List( ArgCheckBase )
calls = Int( 0 )
exp_name = Any
exp_new = Any
tc = Any
@on_trait_change( 'refs.value' )
def arg_check2 ( self, name, new ):
self.calls += 1
self.tc.assertEqual( name, self.exp_name )
self.tc.assertEqual( new, self.exp_new )
class Dict1 ( List1 ):
refs = Dict( Int, ArgCheckBase )
class Dict2 ( HasTraits ):
refs = Dict( Int, ArgCheckBase )
calls = Int( 0 )
exp_new = Any
tc = Any
@on_trait_change( 'refs.value' )
def arg_check1 ( self, new ):
self.calls += 1
self.tc.assertEqual( new, self.exp_new )
class Dict3 ( HasTraits ):
refs = Dict( Int, ArgCheckBase )
calls = Int( 0 )
exp_name = Any
exp_new = Any
tc = Any
@on_trait_change( 'refs.value' )
def arg_check2 ( self, name, new ):
self.calls += 1
self.tc.assertEqual( name, self.exp_name )
self.tc.assertEqual( new, self.exp_new )
class Complex ( HasTraits ):
int1 = Int( 0, test = True )
int2 = Int( 0 )
int3 = Int( 0, test = True )
tint1 = Int( 0 )
tint2 = Int( 0, test = True )
tint3 = Int( 0 )
ref = Instance( ArgCheckBase, () )
calls = Int( 0 )
exp_object = Any
exp_name = Any
dst_name = Any
exp_old = Any
exp_new = Any
dst_new = Any
tc = Any
def arg_check0 ( self ):
self.calls += 1
def arg_check1 ( self, new ):
self.calls += 1
self.tc.assertEqual( new, self.exp_new )
def arg_check2 ( self, name, new ):
self.calls += 1
self.tc.assertEqual( name, self.exp_name )
self.tc.assertEqual( new, self.exp_new )
def arg_check3 ( self, object, name, new ):
self.calls += 1
self.tc.assert_( object is self.exp_object )
self.tc.assertEqual( name, self.exp_name )
self.tc.assertEqual( new, self.exp_new )
def arg_check4 ( self, object, name, old, new ):
self.calls += 1
self.tc.assert_( object is self.exp_object )
self.tc.assertEqual( name, self.exp_name )
self.tc.assertEqual( old, self.exp_old )
self.tc.assertEqual( new, self.exp_new )
class Link ( HasTraits ):
next = Any
prev = Any
value = Int( 0 )
class LinkTest ( HasTraits ):
head = Instance( Link )
calls = Int( 0 )
exp_object = Any
exp_name = Any
dst_name = Any
exp_old = Any
exp_new = Any
dst_new = Any
tc = Any
def arg_check0 ( self ):
self.calls += 1
def arg_check1 ( self, new ):
self.calls += 1
self.tc.assertEqual( new, self.exp_new )
def arg_check2 ( self, name, new ):
self.calls += 1
self.tc.assertEqual( name, self.exp_name )
self.tc.assertEqual( new, self.exp_new )
def arg_check3 ( self, object, name, new ):
self.calls += 1
self.tc.assert_( object is self.exp_object )
self.tc.assertEqual( name, self.exp_name )
self.tc.assertEqual( new, self.exp_new )
def arg_check4 ( self, object, name, old, new ):
self.calls += 1
self.tc.assert_( object is self.exp_object )
self.tc.assertEqual( name, self.exp_name )
self.tc.assertEqual( old, self.exp_old )
self.tc.assertEqual( new, self.exp_new )
class PropertyDependsOn ( HasTraits ):
sum = Property( depends_on = 'ref.[int1,int2,int3]' )
ref = Instance( ArgCheckBase, () )
pcalls = Int( 0 )
calls = Int( 0 )
exp_old = Any
exp_new = Any
tc = Any
@cached_property
def _get_sum ( self ):
self.pcalls += 1
r = self.ref
return (r.int1 + r.int2 + r.int3)
def _sum_changed ( self, old, new ):
self.calls += 1
self.tc.assertEqual( old, self.exp_old )
self.tc.assertEqual( new, self.exp_new )
#-------------------------------------------------------------------------------
# 'OnTraitChangeTest' unit test class:
#-------------------------------------------------------------------------------
class OnTraitChangeTest ( unittest.TestCase ):
#-- Unit Test Methods ------------------------------------------------------
def test_arg_check_simple ( self ):
ac = ArgCheckSimple( tc = self )
ac.on_trait_change( ac.arg_check0, 'value' )
ac.on_trait_change( ac.arg_check1, 'value' )
ac.on_trait_change( ac.arg_check2, 'value' )
ac.on_trait_change( ac.arg_check3, 'value' )
ac.on_trait_change( ac.arg_check4, 'value' )
for i in range( 3 ):
ac.value += 1
self.assert_( ac.calls == (3 * 5) )
ac.on_trait_change( ac.arg_check0, 'value', remove = True )
ac.on_trait_change( ac.arg_check1, 'value', remove = True )
ac.on_trait_change( ac.arg_check2, 'value', remove = True )
ac.on_trait_change( ac.arg_check3, 'value', remove = True )
ac.on_trait_change( ac.arg_check4, 'value', remove = True )
for i in range( 3 ):
ac.value += 1
self.assertEqual( ac.calls, (3 * 5) )
self.assertEqual( ac.value, (2 * 3) )
def test_arg_check_decorator ( self ):
ac = ArgCheckDecorator( tc = self )
for i in range( 3 ):
ac.value += 1
self.assertEqual( ac.calls, (3 * 5) )
self.assertEqual( ac.value, 3 )
def test_instance1 ( self ):
i1 = Instance1( tc = self )
for i in range( 3 ):
i1.set( exp_object = i1.ref, exp_name = 'value', dst_name = 'value',
exp_old = i, exp_new = (i + 1), dst_new = (i + 1) )
i1.ref.value = (i + 1)
self.assertEqual( i1.calls, (3 * 5) )
self.assertEqual( i1.ref.value, 3 )
ref = ArgCheckBase()
i1.set( exp_object = i1, exp_name = 'ref', dst_name = 'value',
exp_old = i1.ref, exp_new = ref, dst_new = 0 )
i1.ref = ref
self.assertEqual( i1.calls, (4 * 5) )
self.assertEqual( i1.ref.value, 0 )
for i in range( 3 ):
i1.set( exp_object = i1.ref, exp_name = 'value', dst_name = 'value',
exp_old = i, exp_new = (i + 1), dst_new = (i + 1) )
i1.ref.value = (i + 1)
self.assertEqual( i1.calls, (7 * 5) )
self.assertEqual( i1.ref.value, 3 )
def test_list1 ( self ):
l1 = List1( tc = self )
for i in range( 3 ):
ac = ArgCheckBase()
l1.set( exp_object = l1, exp_name = 'refs_items', type_old = None,
exp_old = Undefined, type_new = TraitListEvent )
l1.refs.append( ac )
#self.assertEqual( l1.calls, (3 * 3) ) # FIXME
for i in range( 3 ):
self.assertEqual( l1.refs[i].value, 0 )
refs = [ ArgCheckBase(), ArgCheckBase(), ArgCheckBase() ]
l1.set( exp_object = l1, exp_name = 'refs', type_old = None,
exp_old = l1.refs, type_new = TraitListObject )
l1.refs = refs
#self.assertEqual( l1.calls, (4 * 3) )
for i in range( 3 ):
self.assertEqual( l1.refs[i].value, 0 )
for i in range( 3 ):
for j in range( 3 ):
l1.set( exp_object = l1.refs[j], exp_name = 'value',
type_old = None, exp_old = i,
type_new = None, exp_new = (i + 1) )
l1.refs[j].value = (i + 1)
#self.assertEqual( l1.calls, (13 * 3) )
for i in range( 3 ):
self.assertEqual( l1.refs[i].value, 3 )
def test_list2 ( self ):
self.check_list( List2( tc = self ) )
def test_list3 ( self ):
self.check_list( List3( tc = self ) )
def test_dict1 ( self ):
d1 = Dict1( tc = self )
for i in range( 3 ):
ac = ArgCheckBase()
d1.set( exp_object = d1, exp_name = 'refs_items', type_old = None,
exp_old = Undefined, type_new = TraitDictEvent )
d1.refs[i] = ac
#self.assertEqual( d1.calls, (3 * 3) ) # FIXME
for i in range( 3 ):
self.assertEqual( d1.refs[i].value, 0 )
refs = { 0: ArgCheckBase(), 1: ArgCheckBase(), 2: ArgCheckBase() }
d1.set( exp_object = d1, exp_name = 'refs', type_old = None,
exp_old = d1.refs, type_new = TraitDictObject )
d1.refs = refs
#self.assertEqual( d1.calls, (4 * 3) )
for i in range( 3 ):
self.assertEqual( d1.refs[i].value, 0 )
for i in range( 3 ):
for j in range( 3 ):
d1.set( exp_object = d1.refs[j], exp_name = 'value',
type_old = None, exp_old = i,
type_new = None, exp_new = (i + 1) )
d1.refs[j].value = (i + 1)
#self.assertEqual( d1.calls, (13 * 3) )
for i in range( 3 ):
self.assertEqual( d1.refs[i].value, 3 )
def test_dict2 ( self ):
self.check_dict( Dict2( tc = self ) )
def test_dict3 ( self ):
self.check_dict( Dict3( tc = self ) )
def test_pattern_list1 ( self ):
c = Complex( tc = self )
self.check_complex( c, c, 'int1, int2, int3',
[ 'int1', 'int2', 'int3' ], [ 'tint1', 'tint2', 'tint3' ] )
def test_pattern_list2 ( self ):
c = Complex( tc = self )
self.check_complex( c, c, [ 'int1', 'int2', 'int3' ],
[ 'int1', 'int2', 'int3' ], [ 'tint1', 'tint2', 'tint3' ] )
def test_pattern_list3 ( self ):
c = Complex( tc = self )
self.check_complex( c, c.ref, 'ref.[int1, int2, int3]',
[ 'int1', 'int2', 'int3' ], [ 'tint1', 'tint2', 'tint3' ] )
def test_pattern_list4 ( self ):
c = Complex( tc = self )
handlers = [ c.arg_check0, c.arg_check3, c.arg_check4 ]
n = len( handlers )
pattern = 'ref.[int1,int2,int3]'
self.multi_register( c, handlers, pattern )
r0 = c.ref
r1 = ArgCheckBase()
c.set( exp_object = c, exp_name = 'ref', exp_old = r0, exp_new = r1 )
c.ref = r1
c.set( exp_old = r1, exp_new = r0 )
c.ref = r0
self.assertEqual( c.calls, 2 * n )
self.multi_register( c, handlers, pattern, remove = True )
c.ref = r1
c.ref = r0
self.assertEqual( c.calls, 2 * n )
def test_pattern_list5 ( self ):
c = Complex( tc = self )
c.on_trait_change( c.arg_check1, 'ref.[int1,int2,int3]' )
self.assertRaises( TraitError, c.set, ref = ArgCheckBase() )
def test_pattern_list6 ( self ):
c = Complex( tc = self )
c.on_trait_change( c.arg_check2, 'ref.[int1,int2,int3]' )
self.assertRaises( TraitError, c.set, ref = ArgCheckBase() )
def test_pattern_list7 ( self ):
c = Complex( tc = self )
self.check_complex( c, c, '+test', [ 'int1', 'int3', 'tint2' ],
[ 'int2', 'tint1', 'tint3' ] )
def test_pattern_list8 ( self ):
c = Complex( tc = self )
self.check_complex( c, c, 'int+test',
[ 'int1', 'int3' ], [ 'int2', 'tint1', 'tint2', 'tint3' ] )
def test_pattern_list9 ( self ):
c = Complex( tc = self )
self.check_complex( c, c, 'int-test', [ 'int2' ],
[ 'int1', 'int3', 'tint4', 'tint5', 'tint6' ] )
def test_pattern_list10 ( self ):
c = Complex( tc = self )
self.check_complex( c, c, 'int+',
[ 'int1', 'int2', 'int3' ], [ 'tint1', 'tint2', 'tint3' ] )
def test_pattern_list11 ( self ):
c = Complex( tc = self )
self.check_complex( c, c, 'int-',
[ 'int1', 'int2', 'int3' ], [ 'tint1', 'tint2', 'tint3' ] )
def test_pattern_list12 ( self ):
c = Complex( tc = self )
self.check_complex( c, c, 'int+test,tint-test',
[ 'int1', 'int3', 'tint1', 'tint3' ], [ 'int2', 'tint2' ] )
def test_pattern_list13 ( self ):
c = Complex( tc = self )
self.check_complex( c, c.ref, 'ref.[int+test,tint-test]',
[ 'int1', 'int3', 'tint1', 'tint3' ], [ 'int2', 'tint2' ] )
def test_cycle1 ( self ):
lt = LinkTest( tc = self, head = self.build_list() )
handlers = [ lt.arg_check0, lt.arg_check1, lt.arg_check2, lt.arg_check3,
lt.arg_check4 ]
nh = len( handlers )
self.multi_register( lt, handlers, 'head.next*.value' )
cur = lt.head
for i in range( 4 ):
lt.set( exp_object = cur, exp_name = 'value', exp_old = 10 * i,
exp_new = (10 * i) + 1 )
cur.value = (10 * i) + 1
cur = cur.next
self.assertEqual( lt.calls, 4 * nh )
self.multi_register( lt, handlers, 'head.next*.value', remove = True )
cur = lt.head
for i in range( 4 ):
cur.value = (10 * i) + 2
cur = cur.next
self.assertEqual( lt.calls, 4 * nh )
def test_cycle2 ( self ):
lt = LinkTest( tc = self, head = self.build_list() )
handlers = [ lt.arg_check0, lt.arg_check1, lt.arg_check2, lt.arg_check3,
lt.arg_check4 ]
nh = len( handlers )
self.multi_register( lt, handlers, 'head.[next,prev]*.value' )
cur = lt.head
for i in range( 4 ):
lt.set( exp_object = cur, exp_name = 'value', exp_old = 10 * i,
exp_new = (10 * i) + 1 )
cur.value = (10 * i) + 1
cur = cur.next
self.assertEqual( lt.calls, 4 * nh )
self.multi_register( lt, handlers, 'head.[next,prev]*.value', remove = True )
cur = lt.head
for i in range( 4 ):
cur.value = (10 * i) + 2
cur = cur.next
self.assertEqual( lt.calls, 4 * nh )
def test_cycle3 ( self ):
lt = LinkTest( tc = self, head = self.build_list() )
handlers = [ lt.arg_check0, lt.arg_check3, lt.arg_check4 ]
nh = len( handlers )
self.multi_register( lt, handlers, 'head.next*.value' )
link = self.new_link( lt, lt.head, 1 )
self.assertEqual( lt.calls, nh )
link = self.new_link( lt, link, 2 )
self.assertEqual( lt.calls, 2 * nh )
self.multi_register( lt, handlers, 'head.next*.value', remove = True )
link = self.new_link( lt, link, 3 )
self.assertEqual( lt.calls, 2 * nh )
def test_property ( self ):
pdo = PropertyDependsOn( tc = self )
sum = pdo.sum
self.assertEqual( sum, 0 )
for n in [ 'int1', 'int2', 'int3' ]:
for i in range( 3 ):
pdo.set( exp_old = sum, exp_new = sum + 1 )
setattr( pdo.ref, n, i + 1 )
sum += 1
self.assertEqual( pdo.pcalls, (3 * 3) + 1 )
self.assertEqual( pdo.calls, 3 * 3 )
for i in range( 10 ):
x = pdo.sum
self.assertEqual( pdo.pcalls, (3 * 3) + 1 )
pdo.set( exp_old = sum, exp_new = 60 )
old_ref = pdo.ref
pdo.ref = ArgCheckBase( int1 = 10, int2 = 20, int3 = 30 )
self.assertEqual( pdo.pcalls, (3 * 3) + 2 )
self.assertEqual( pdo.calls, (3 * 3) + 1 )
sum = 60
for n in [ 'int1', 'int2', 'int3' ]:
for i in range( 3 ):
pdo.set( exp_old = sum, exp_new = sum + 1 )
setattr( pdo.ref, n, getattr( pdo.ref, n ) + 1 )
sum += 1
self.assertEqual( pdo.pcalls, (2 * 3 * 3) + 2 )
self.assertEqual( pdo.calls, (2 * 3 * 3) + 1 )
for n in [ 'int1', 'int2', 'int3' ]:
for i in range( 3 ):
setattr( old_ref, n, getattr( old_ref, n ) + 1 )
self.assertEqual( pdo.pcalls, (2 * 3 * 3) + 2 )
self.assertEqual( pdo.calls, (2 * 3 * 3) + 1 )
self.assertEqual( pdo.sum, sum )
self.assertEqual( pdo.pcalls, (2 * 3 * 3) + 2 )
#-- Helper methods ---------------------------------------------------------
def check_list ( self, l ):
for i in range( 3 ):
ac = ArgCheckBase()
self.assertRaises( TraitError, l.refs.append, ac)
self.assertEqual( l.calls, 0 )
for i in range( 3 ):
self.assertEqual( l.refs[i].value, 0 )
refs = [ ArgCheckBase(), ArgCheckBase(), ArgCheckBase() ]
self.assertRaises( TraitError, l.set, refs = refs )
self.assertEqual( l.calls, 0 )
for i in range( 3 ):
self.assertEqual( l.refs[i].value, 0 )
for i in range( 3 ):
for j in range( 3 ):
l.exp_new = (i + 1)
l.refs[j].value = (i + 1)
self.assertEqual( l.calls, 0 )
for i in range( 3 ):
self.assertEqual( l.refs[i].value, 3 )
def check_dict ( self, d ):
for i in range( 3 ):
ac = ArgCheckBase()
self.assertRaises( TraitError, d.refs.setdefault, i, ac )
self.assertEqual( d.calls, 0 )
for i in range( 3 ):
self.assertEqual( d.refs[i].value, 0 )
refs = { 0: ArgCheckBase(), 1: ArgCheckBase(), 2: ArgCheckBase() }
self.assertRaises( TraitError, d.set, refs = refs )
self.assertEqual( d.calls, 0 )
for i in range( 3 ):
self.assertEqual( d.refs[i].value, 0 )
for i in range( 3 ):
for j in range( 3 ):
d.exp_new = (i + 1)
d.refs[j].value = (i + 1)
self.assertEqual( d.calls, 0 )
for i in range( 3 ):
self.assertEqual( d.refs[i].value, 3 )
def check_complex ( self, c, r, pattern, names, other = [] ):
handlers = [ c.arg_check0, c.arg_check1, c.arg_check2, c.arg_check3,
c.arg_check4 ]
nh = len( handlers )
nn = len( names )
self.multi_register( c, handlers, pattern )
for i in range( 3 ):
for n in names:
c.set( exp_object = r, exp_name = n, exp_old = i,
exp_new = (i + 1) )
setattr( r, n, i + 1 )
for n in other:
c.set( exp_object = r, exp_name = n, exp_old = i,
exp_new = (i + 1) )
setattr( r, n, i + 1 )
self.assertEqual( c.calls, 3 * nn * nh )
self.multi_register( c, handlers, pattern, remove = True )
for i in range( 3 ):
for n in names:
setattr( r, n, i + 1 )
for n in other:
setattr( r, n, i + 1 )
self.assertEqual( c.calls, 3 * nn * nh )
def multi_register ( self, object, handlers, pattern, remove = False ):
for handler in handlers:
print object, handler, pattern, remove
object.on_trait_change( handler, pattern, remove = remove )
def build_list ( self ):
l1 = Link( value = 00 )
l2 = Link( value = 10 )
l3 = Link( value = 20 )
l4 = Link( value = 30 )
l1.set( next = l2, prev = l4 )
l2.set( next = l3, prev = l1 )
l3.set( next = l4, prev = l2 )
l4.set( next = l1, prev = l3 )
return l1
def new_link ( self, lt, cur, value ):
link = Link( value = value, next = cur.next, prev = cur )
cur.next.prev = link
lt.set( exp_object = cur, exp_name = 'next', exp_old = cur.next,
exp_new = link )
cur.next = link
return link
# Run the unit tests (if invoked from the command line):
def ignore ( *args ):
pass
push_exception_handler( handler = ignore, reraise_exceptions = True )
if __name__ == '__main__':
unittest.main()
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