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tests
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test_delegate.py
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# ===========================================================================
# This software is subject to the provisions of the Zope Public License,
# Version 2.0 (ZPL). A copy of the ZPL should accompany this distribution.
# THIS SOFTWARE IS PROVIDED "AS IS" AND ANY AND ALL EXPRESS OR IMPLIED
# WARRANTIES ARE DISCLAIMED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
# WARRANTIES OF TITLE, MERCHANTABILITY, AGAINST INFRINGEMENT, AND FITNESS
# FOR A PARTICULAR PURPOSE.
# ===========================================================================
import
clr
clr
.
AddReference
(
'Python.Test'
)
from
Python
.
Test
import
DelegateTest
,
PublicDelegate
from
Python
.
Test
import
StringDelegate
,
ObjectDelegate
from
Python
.
Test
import
BoolDelegate
import
sys
,
os
,
string
,
unittest
,
types
import
Python
.
Test
as
Test
import
System
class
DelegateTests
(
unittest
.
TestCase
):
"""Test CLR delegate support."""
def
testDelegateStandardAttrs
(
self
):
"""Test standard delegate attributes."""
self
.
assertTrue
(
PublicDelegate
.
__name__
==
'PublicDelegate'
)
self
.
assertTrue
(
PublicDelegate
.
__module__
==
'Python.Test'
)
self
.
assertTrue
(
type
(
PublicDelegate
.
__dict__
)
==
types
.
DictProxyType
)
self
.
assertTrue
(
PublicDelegate
.
__doc__
==
None
)
def
testGlobalDelegateVisibility
(
self
):
"""Test visibility of module-level delegates."""
from
Python
.
Test
import
PublicDelegate
self
.
assertTrue
(
PublicDelegate
.
__name__
==
'PublicDelegate'
)
self
.
assertTrue
(
Test
.
PublicDelegate
.
__name__
==
'PublicDelegate'
)
def
test
():
from
Python
.
Test
import
InternalDelegate
self
.
assertRaises
(
ImportError
,
test
)
def
test
():
i
=
Test
.
InternalDelegate
self
.
assertRaises
(
AttributeError
,
test
)
def
testNestedDelegateVisibility
(
self
):
"""Test visibility of nested delegates."""
ob
=
DelegateTest
.
PublicDelegate
self
.
assertTrue
(
ob
.
__name__
==
'PublicDelegate'
)
ob
=
DelegateTest
.
ProtectedDelegate
self
.
assertTrue
(
ob
.
__name__
==
'ProtectedDelegate'
)
def
test
():
ob
=
DelegateTest
.
InternalDelegate
self
.
assertRaises
(
AttributeError
,
test
)
def
test
():
ob
=
DelegateTest
.
PrivateDelegate
self
.
assertRaises
(
AttributeError
,
test
)
def
testDelegateFromFunction
(
self
):
"""Test delegate implemented with a Python function."""
def
sayhello
():
return
"hello"
d
=
StringDelegate
(
sayhello
)
ob
=
DelegateTest
()
self
.
assertTrue
(
ob
.
CallStringDelegate
(
d
)
==
"hello"
)
self
.
assertTrue
(
d
()
==
"hello"
)
ob
.
stringDelegate
=
d
self
.
assertTrue
(
ob
.
CallStringDelegate
(
ob
.
stringDelegate
)
==
"hello"
)
self
.
assertTrue
(
ob
.
stringDelegate
()
==
"hello"
)
def
testDelegateFromMethod
(
self
):
"""Test delegate implemented with a Python instance method."""
class
Hello
:
def
sayhello
(
self
):
return
"hello"
inst
=
Hello
()
d
=
StringDelegate
(
inst
.
sayhello
)
ob
=
DelegateTest
()
self
.
assertTrue
(
ob
.
CallStringDelegate
(
d
)
==
"hello"
)
self
.
assertTrue
(
d
()
==
"hello"
)
ob
.
stringDelegate
=
d
self
.
assertTrue
(
ob
.
CallStringDelegate
(
ob
.
stringDelegate
)
==
"hello"
)
self
.
assertTrue
(
ob
.
stringDelegate
()
==
"hello"
)
def
testDelegateFromUnboundMethod
(
self
):
"""Test failure mode for unbound methods."""
class
Hello
:
def
sayhello
(
self
):
return
"hello"
def
test
():
d
=
StringDelegate
(
Hello
.
sayhello
)
d
()
self
.
assertRaises
(
TypeError
,
test
)
def
testDelegateFromStaticMethod
(
self
):
"""Test delegate implemented with a Python static method."""
class
Hello
:
def
sayhello
():
return
"hello"
sayhello
=
staticmethod
(
sayhello
)
d
=
StringDelegate
(
Hello
.
sayhello
)
ob
=
DelegateTest
()
self
.
assertTrue
(
ob
.
CallStringDelegate
(
d
)
==
"hello"
)
self
.
assertTrue
(
d
()
==
"hello"
)
ob
.
stringDelegate
=
d
self
.
assertTrue
(
ob
.
CallStringDelegate
(
ob
.
stringDelegate
)
==
"hello"
)
self
.
assertTrue
(
ob
.
stringDelegate
()
==
"hello"
)
inst
=
Hello
()
d
=
StringDelegate
(
inst
.
sayhello
)
ob
=
DelegateTest
()
self
.
assertTrue
(
ob
.
CallStringDelegate
(
d
)
==
"hello"
)
self
.
assertTrue
(
d
()
==
"hello"
)
ob
.
stringDelegate
=
d
self
.
assertTrue
(
ob
.
CallStringDelegate
(
ob
.
stringDelegate
)
==
"hello"
)
self
.
assertTrue
(
ob
.
stringDelegate
()
==
"hello"
)
def
testDelegateFromClassMethod
(
self
):
"""Test delegate implemented with a Python class method."""
class
Hello
:
def
sayhello
(
self
):
return
"hello"
sayhello
=
classmethod
(
sayhello
)
d
=
StringDelegate
(
Hello
.
sayhello
)
ob
=
DelegateTest
()
self
.
assertTrue
(
ob
.
CallStringDelegate
(
d
)
==
"hello"
)
self
.
assertTrue
(
d
()
==
"hello"
)
ob
.
stringDelegate
=
d
self
.
assertTrue
(
ob
.
CallStringDelegate
(
ob
.
stringDelegate
)
==
"hello"
)
self
.
assertTrue
(
ob
.
stringDelegate
()
==
"hello"
)
inst
=
Hello
()
d
=
StringDelegate
(
inst
.
sayhello
)
ob
=
DelegateTest
()
self
.
assertTrue
(
ob
.
CallStringDelegate
(
d
)
==
"hello"
)
self
.
assertTrue
(
d
()
==
"hello"
)
ob
.
stringDelegate
=
d
self
.
assertTrue
(
ob
.
CallStringDelegate
(
ob
.
stringDelegate
)
==
"hello"
)
self
.
assertTrue
(
ob
.
stringDelegate
()
==
"hello"
)
def
testDelegateFromCallable
(
self
):
"""Test delegate implemented with a Python callable object."""
class
Hello
:
def
__call__
(
self
):
return
"hello"
inst
=
Hello
()
d
=
StringDelegate
(
inst
)
ob
=
DelegateTest
()
self
.
assertTrue
(
ob
.
CallStringDelegate
(
d
)
==
"hello"
)
self
.
assertTrue
(
d
()
==
"hello"
)
ob
.
stringDelegate
=
d
self
.
assertTrue
(
ob
.
CallStringDelegate
(
ob
.
stringDelegate
)
==
"hello"
)
self
.
assertTrue
(
ob
.
stringDelegate
()
==
"hello"
)
def
testDelegateFromManagedInstanceMethod
(
self
):
"""Test delegate implemented with a managed instance method."""
ob
=
DelegateTest
()
d
=
StringDelegate
(
ob
.
SayHello
)
self
.
assertTrue
(
ob
.
CallStringDelegate
(
d
)
==
"hello"
)
self
.
assertTrue
(
d
()
==
"hello"
)
ob
.
stringDelegate
=
d
self
.
assertTrue
(
ob
.
CallStringDelegate
(
ob
.
stringDelegate
)
==
"hello"
)
self
.
assertTrue
(
ob
.
stringDelegate
()
==
"hello"
)
def
testDelegateFromManagedStaticMethod
(
self
):
"""Test delegate implemented with a managed static method."""
d
=
StringDelegate
(
DelegateTest
.
StaticSayHello
)
ob
=
DelegateTest
()
self
.
assertTrue
(
ob
.
CallStringDelegate
(
d
)
==
"hello"
)
self
.
assertTrue
(
d
()
==
"hello"
)
ob
.
stringDelegate
=
d
self
.
assertTrue
(
ob
.
CallStringDelegate
(
ob
.
stringDelegate
)
==
"hello"
)
self
.
assertTrue
(
ob
.
stringDelegate
()
==
"hello"
)
def
testDelegateFromDelegate
(
self
):
"""Test delegate implemented with another delegate."""
def
sayhello
():
return
"hello"
d1
=
StringDelegate
(
sayhello
)
d2
=
StringDelegate
(
d1
)
ob
=
DelegateTest
()
self
.
assertTrue
(
ob
.
CallStringDelegate
(
d2
)
==
"hello"
)
self
.
assertTrue
(
d2
()
==
"hello"
)
ob
.
stringDelegate
=
d2
self
.
assertTrue
(
ob
.
CallStringDelegate
(
ob
.
stringDelegate
)
==
"hello"
)
self
.
assertTrue
(
ob
.
stringDelegate
()
==
"hello"
)
def
testDelegateWithInvalidArgs
(
self
):
"""Test delegate instantiation with invalid (non-callable) args."""
def
test
():
d
=
StringDelegate
(
None
)
self
.
assertRaises
(
TypeError
,
test
)
def
test
():
d
=
StringDelegate
(
"spam"
)
self
.
assertRaises
(
TypeError
,
test
)
def
test
():
d
=
StringDelegate
(
1
)
self
.
assertRaises
(
TypeError
,
test
)
def
testMulticastDelegate
(
self
):
"""Test multicast delegates."""
class
Multi
:
def
__init__
(
self
):
self
.
value
=
0
def
count
(
self
):
self
.
value
+=
1
return
'ok'
inst
=
Multi
()
d1
=
StringDelegate
(
inst
.
count
)
d2
=
StringDelegate
(
inst
.
count
)
md
=
System
.
Delegate
.
Combine
(
d1
,
d2
)
ob
=
DelegateTest
()
self
.
assertTrue
(
ob
.
CallStringDelegate
(
md
)
==
"ok"
)
self
.
assertTrue
(
inst
.
value
==
2
)
self
.
assertTrue
(
md
()
==
"ok"
)
self
.
assertTrue
(
inst
.
value
==
4
)
def
testSubclassDelegateFails
(
self
):
"""Test that subclassing of a delegate type fails."""
def
test
():
class
Boom
(
PublicDelegate
):
pass
self
.
assertRaises
(
TypeError
,
test
)
def
testDelegateEquality
(
self
):
"""Test delegate equality."""
def
sayhello
():
return
"hello"
d
=
StringDelegate
(
sayhello
)
ob
=
DelegateTest
()
ob
.
stringDelegate
=
d
self
.
assertTrue
(
ob
.
stringDelegate
==
d
)
def
testBoolDelegate
(
self
):
"""Test boolean delegate."""
def
always_so_negative
():
return
0
d
=
BoolDelegate
(
always_so_negative
)
ob
=
DelegateTest
()
ob
.
CallBoolDelegate
(
d
)
self
.
assertTrue
(
not
d
())
self
.
assertTrue
(
not
ob
.
CallBoolDelegate
(
d
))
# test async delegates
# test multicast delegates
# test explicit op_
# test sig mismatch, both on managed and Python side
# test return wrong type
def
test_suite
():
return
unittest
.
makeSuite
(
DelegateTests
)
def
main
():
unittest
.
TextTestRunner
().
run
(
test_suite
())
if
__name__
==
'__main__'
:
main
()
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