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Acquisition
Commit f9f846a2 authored by Hanno Schlichting's avatar Hanno Schlichting
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src/Acquisition/tests.py
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......@@ -70,9 +70,9 @@
cannot be found in 'a'.
Aquisition wrappers provide access to the wrapped objects
through the attributes 'aq_parent', 'aq_self', 'aq_base'.
through the attributes 'aq_parent', 'aq_self', 'aq_base'.
In the example above, the expressions::
>>> c.a.aq_parent is c
1
......@@ -97,28 +97,28 @@
Two styles of acquisition are supported in the current
ExtensionClass release, implicit and explicit aquisition.
Implicit acquisition
Implicit acquisition is so named because it searches for
attributes from the environment automatically whenever an
attribute cannot be obtained directly from an object or
through inheritence.
An attribute may be implicitly acquired if it's name does
not begin with an underscore, '_'.
To support implicit acquisition, an object should inherit
from the mix-in class 'Acquisition.Implicit'.
Explicit Acquisition
When explicit acquisition is used, attributes are not
automatically obtained from the environment. Instead, the
method 'aq_aquire' must be used, as in::
print c.a.aq_acquire('color')
To support explicit acquisition, an object should inherit
from the mix-in class 'Acquisition.Explicit'.
......@@ -206,31 +206,31 @@
For example, in::
>>> from Acquisition import Explicit
>>> class HandyForTesting:
... def __init__(self, name): self.name=name
... def __str__(self):
... return "%s(%s)" % (self.name, self.__class__.__name__)
... __repr__=__str__
>>> class E(Explicit, HandyForTesting):
... pass
>>> class Nice(HandyForTesting):
... isNice=1
... def __str__(self):
... return HandyForTesting.__str__(self)+' and I am nice!'
... __repr__=__str__
>>> a = E('a')
>>> a.b = E('b')
>>> a.b.c = E('c')
>>> a.p = Nice('spam')
>>> a.b.p = E('p')
>>> def find_nice(self, ancestor, name, object, extra):
... return hasattr(object,'isNice') and object.isNice
>>> print a.b.c.aq_acquire('p', find_nice)
spam(Nice) and I am nice!
......@@ -258,13 +258,13 @@
Consider the following example::
>>> from Acquisition import Implicit
>>> class C(Implicit):
... def __init__(self, name): self.name=name
... def __str__(self):
... return "%s(%s)" % (self.name, self.__class__.__name__)
... __repr__=__str__
>>> a = C("a")
>>> a.b = C("b")
>>> a.b.pref = "spam"
......@@ -323,9 +323,9 @@
'a' is searched no more than once, even though it is wrapped three
times.
.. [1] Gil, J., Lorenz, D.,
.. [1] Gil, J., Lorenz, D.,
"Environmental Acquisition--A New Inheritance-Like Abstraction Mechanism",
http://www.bell-labs.com/people/cope/oopsla/Oopsla96TechnicalProgramAbstracts.html#GilLorenz,
http://www.bell-labs.com/people/cope/oopsla/Oopsla96TechnicalProgramAbstracts.html#GilLorenz,
OOPSLA '96 Proceedings, ACM SIG-PLAN, October, 1996
$Id$
......@@ -368,7 +368,7 @@ def test_unwrapped():
Traceback (most recent call last):
...
AttributeError: x
>>> Acquisition.aq_acquire(c, 'id',
... lambda searched, parent, name, ob, extra: extra)
Traceback (most recent call last):
......@@ -409,8 +409,8 @@ def test_unwrapped():
>>> Acquisition.aq_self(c) is c
1
"""
def test_simple():
......@@ -475,7 +475,7 @@ def test_simple():
Traceback (most recent call last):
...
AttributeError: x
>>> a.b.c.aq_acquire('id',
... lambda searched, parent, name, ob, extra: extra)
Traceback (most recent call last):
......@@ -497,7 +497,7 @@ def test_simple():
>>> Acquisition.aq_acquire(a.b.c, 'y')
42
>>> Acquisition.aq_acquire(a.b.c, 'id',
... lambda searched, parent, name, ob, extra: extra)
Traceback (most recent call last):
......@@ -685,19 +685,19 @@ def test_muliple():
>>> show(a.a1.a11.a2.a21.aq_inner.aq_parent.aq_inner.aq_parent)
a
>>> a.a1.a11.a2.a21.aq_chain
[a21, a2, a11, a1, a]
>>> a.a1.a11.a2.a21.aq_inContextOf(a)
1
>>> a.a1.a11.a2.a21.aq_inContextOf(a.a2)
1
>>> a.a1.a11.a2.a21.aq_inContextOf(a.a1)
0
>>> a.a1.a11.a2.a21.aq_acquire('color')
'red'
>>> a.a1.a11.a2.a21.aq_acquire('id')
......@@ -712,7 +712,7 @@ def test_muliple():
>>> a.a1.a11.a2.a21.aq_acquire('color',
... lambda ob, parent, name, v, extra: extra, 1)
'red'
>>> a.a1.y = 42
>>> a.a1.a11.a2.a21.aq_acquire('y')
42
......@@ -796,13 +796,13 @@ def test_muliple():
>>> show(Acquisition.aq_parent(
... a.a1.a11.a2.a21.aq_inner.aq_parent.aq_inner))
a
>>> Acquisition.aq_chain(a.a1.a11.a2.a21)
[a21, a2, a11, a1, a]
>>> Acquisition.aq_chain(a.a1.a11.a2.a21, 1)
[a21, a2, a]
>>> Acquisition.aq_acquire(a.a1.a11.a2.a21, 'color')
'red'
>>> Acquisition.aq_acquire(a.a1.a11.a2.a21, 'id')
......@@ -817,7 +817,7 @@ def test_muliple():
>>> Acquisition.aq_acquire(a.a1.a11.a2.a21, 'color',
... lambda ob, parent, name, v, extra: extra, 1)
'red'
>>> a.a1.y = 42
>>> Acquisition.aq_acquire(a.a1.a11.a2.a21, 'y')
42
......@@ -829,7 +829,7 @@ def test_muliple():
"""
def test_pinball():
r"""
>>> a = I('a')
......@@ -943,7 +943,7 @@ def test_pinball():
a1
|
a
"""
def test_explicit():
......@@ -1003,7 +1003,7 @@ def test_explicit():
Traceback (most recent call last):
...
AttributeError: x
>>> a.b.c.aq_acquire('id',
... lambda searched, parent, name, ob, extra: extra)
Traceback (most recent call last):
......@@ -1025,7 +1025,7 @@ def test_explicit():
>>> Acquisition.aq_acquire(a.b.c, 'y')
42
>>> Acquisition.aq_acquire(a.b.c, 'id',
... lambda searched, parent, name, ob, extra: extra)
Traceback (most recent call last):
......@@ -1143,7 +1143,7 @@ def test_mixed_explicit_and_explicit():
Traceback (most recent call last):
...
AttributeError: x
>>> a.b.c.aq_acquire('id',
... lambda searched, parent, name, ob, extra: extra)
Traceback (most recent call last):
......@@ -1165,7 +1165,7 @@ def test_mixed_explicit_and_explicit():
>>> Acquisition.aq_acquire(a.b.c, 'y')
42
>>> Acquisition.aq_acquire(a.b.c, 'id',
... lambda searched, parent, name, ob, extra: extra)
Traceback (most recent call last):
......@@ -1221,7 +1221,7 @@ def test_mixed_explicit_and_explicit():
def test_aq_inContextOf():
"""
"""
>>> from ExtensionClass import Base
>>> import Acquisition
......@@ -1247,9 +1247,9 @@ def test_aq_inContextOf():
... raise 'Program error', 'spam'
... except AttributeError: pass
A()
New test for wrapper comparisons.
>>> foo = b.a
>>> bar = b.a
>>> foo == bar
......@@ -1379,14 +1379,14 @@ def test_AqAlg():
[D, C, A]
>>> map(Acquisition.aq_base, Acquisition.aq_chain(A.B.C.D, 1))
[D, C, A]
>>> A.B.C.D.color
'red'
>>> Acquisition.aq_get(A.B.C.D, "color", None)
'red'
>>> Acquisition.aq_get(A.B.C.D, "color", None, 1)
"""
def test_explicit_acquisition():
......@@ -1414,7 +1414,7 @@ def test_explicit_acquisition():
... raise 'Program error', 'spam'
... except AttributeError: pass
A
"""
def test_creating_wrappers_directly():
......@@ -1593,7 +1593,7 @@ def test_interfaces():
def show(x):
print showaq(x).strip()
def showaq(m_self, indent=''):
rval = ''
obj = m_self
......@@ -1631,11 +1631,11 @@ def test_Basic_gc():
>>> for B in I, E:
... class C1(B):
... pass
...
...
... class C2(Base):
... def __del__(self):
... print 'removed'
...
...
... a=C1('a')
... a.b = C1('a.b')
... a.b.a = a
......@@ -1664,7 +1664,7 @@ def test_Wrapper_gc():
... class C:
... def __del__(self):
... print 'removed'
...
...
... a=B('a')
... a.b = B('b')
... a.a_b = a.b # circ ref through wrapper
......@@ -1891,7 +1891,7 @@ def test_proxying():
class Location(object):
__parent__ = None
class ECLocation(ExtensionClass.Base):
__parent__ = None
......
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