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Tests for object finalization semantics, as outlined in PEP 442.
� N)� with_tp_delc C s Gd d � d t � } | S)Nc @ s e Z d Z d d � Z d S)zwith_tp_del.<locals>.Cc _ s t d � � d S)Nz requires _testcapi.with_tp_del)� TypeError)�cls�args�kwargs� r �;/opt/alt/python35/lib64/python3.5/test/test_finalization.py�__new__ s z with_tp_del.<locals>.C.__new__N)�__name__�
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S)�NonGCSimpleBasezd
The base class for all the objects under test, equipped with various
testing features.
Fc C sO | j j � | j j � t j j � t j � | j j � | j j � d S)N)� survivors�clear�errors�gc�garbage�collect� del_calls� tp_del_calls)r r r r �_cleanup% s
zNonGCSimpleBase._cleanupc c sq t j � �^ | j j � | j j � d t _ z d V| j rN | j d � Wd d t _ | j � XWd QRXd S)zI
A context manager to use around all finalization tests.
FNr T) r Z
disable_gcr r r r � _cleaningr r )r r r r �test. s
zNonGCSimpleBase.testc C s d S)z8
Check the object is sane (non-broken).
Nr )�selfr r r � check_sanity@ s z NonGCSimpleBase.check_sanityc C ss y7 | j s6 | j j t | � � | j � | j � Wn5 t k
rn } z | j j | � WYd d } ~ Xn Xd S)z�
PEP 442 finalizer. Record that this was called, check the
object is in a sane state, and invoke a side effect.
N)r r �append�idr � side_effect� Exceptionr )r �er r r �__del__E s
zNonGCSimpleBase.__del__c C s d S)z6
A side effect called on destruction.
Nr )r r r r r R s zNonGCSimpleBase.side_effectN)r
r r �__doc__r r r r r � __slots__� classmethodr �
contextlib�contextmanagerr r r# r r r r r r s
r c @ s( e Z d Z d d � Z d d � Z d S)�
SimpleBasec C s t | � | _ d S)N)r �id_)r r r r �__init__Z s zSimpleBase.__init__c C s | j t | � k s t � d S)N)r* r �AssertionError)r r r r r ] s zSimpleBase.check_sanityN)r
r r r+ r r r r r r) X s r) c @ s e Z d Z f Z d S)�NonGCN)r
r r r% r r r r r- a s r- c @ s" e Z d Z f Z d d � Z d S)�NonGCResurrectorc C s | j j | � d S)zF
Resurrect self by storing self in a class-wide list.
N)r r )r r r r r g s z NonGCResurrector.side_effectN)r
r r r% r r r r r r. d s r. c @ s e Z d Z d S)�SimpleN)r
r r r r r r r/ m s r/ c @ s e Z d Z d S)�SimpleResurrectorN)r
r r r r r r r0 p s r0 c @ sd e Z d Z d d � Z d d � Z d d � Z d d � Z d d
� Z d d � Z d
d � Z d S)�TestBasec C s- t j d d � | _ g t j d d � <d S)N)r r � old_garbage)r r r r �setUpv s zTestBase.setUpc
C s/ z | j t j g � Wd | ` t j � Xd S)N)� assertEqualr r r2 r )r r r r �tearDownz s zTestBase.tearDownc C s# | j t t j � t | � � d S)N)r4 �sortedr) r )r �idsr r r �assert_del_calls� s zTestBase.assert_del_callsc C s# | j t t j � t | � � d S)N)r4 r6 r) r )r r7 r r r �assert_tp_del_calls� s z TestBase.assert_tp_del_callsc C s0 | j t d d � t j D� � t | � � d S)Nc s s | ] } t | � Vq d S)N)r )�.0�xr r r � <genexpr>� s z,TestBase.assert_survivors.<locals>.<genexpr>)r4 r6 r) r )r r7 r r r �assert_survivors� s zTestBase.assert_survivorsc C s0 | j t d d � t j D� � t | � � d S)Nc s s | ] } t | � Vq d S)N)r )r: r; r r r r< � s z*TestBase.assert_garbage.<locals>.<genexpr>)r4 r6 r r )r r7 r r r �assert_garbage� s zTestBase.assert_garbagec C s t j j � d S)N)r) r r )r r r r �clear_survivors� s zTestBase.clear_survivorsN)
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S) �SimpleFinalizationTestz.
Test finalization without refcycles.
c
C s� t j � �� t � } t | � g } t j | � } ~ t j � | j | � | j g � | j
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z"SimpleFinalizationTest.test_simplec
C s� t j � �� t � } t | � g } t j | � } ~ t j � | j | � | j | � | j
| � d � | j � t j � | j | � | j g � Wd QRX| j | � d � d S)N)
r) r r0 r rA rB r r r8 r= � assertIsNotr? rC )r rD r7 rE r r r �test_simple_resurrect� s
z,SimpleFinalizationTest.test_simple_resurrectc
C s� t j � �~ t � } | j t j | � � t | � g } ~ t j � | j | � | j g � t j � | j | � | j g � Wd QRXd S)N)
r) r r- � assertFalser �
is_trackedr r r8 r= )r rD r7 r r r � test_non_gc� s
z"SimpleFinalizationTest.test_non_gcc
C s� t j � �� t � } | j t j | � � t | � g } ~ t j � | j | � | j | � | j
� t j � | j | d � | j | � Wd QRXd S)N� ) r) r r. rI r rJ r r r8 r= r? )r rD r7 r r r �test_non_gc_resurrect� s
z,SimpleFinalizationTest.test_non_gc_resurrectN)r
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r@ c s4 e Z d Z � f d d � Z � f d d � Z � S)�
SelfCycleBasec s t � j � | | _ d S)N)�superr+ rB )r )� __class__r r r+ � s
zSelfCycleBase.__init__c s& t � j � | j | k s" t � d S)N)rO r rB r, )r )rP r r r � s
zSelfCycleBase.check_sanity)r
r r r+ r r r )rP r rN � s rN c @ s e Z d Z d S)�SimpleSelfCycleN)r
r r r r r r rQ � s rQ c @ s e Z d Z d S)�SelfCycleResurrectorN)r
r r r r r r rR � s rR c @ s e Z d Z d d � Z d S)�SuicidalSelfCyclec C s
d | _ d S)z7
Explicitly break the reference cycle.
N)rB )r r r r r � s z SuicidalSelfCycle.side_effectN)r
r r r r r r r rS � s rS c @ s: e Z d Z d Z d d � Z d d � Z d d � Z d S) �SelfCycleFinalizationTestzX
Test finalization of an object having a single cyclic reference to
itself.
c
C s� t j � �� t � } t | � g } t j | � } ~ t j � | j | � | j g � | j
| � d � t j � | j | � | j g � Wd QRXd S)N) r) r rQ r rA rB r r r8 r= rC )r rD r7 rE r r r rF � s
z%SelfCycleFinalizationTest.test_simplec
C s� t j � �� t � } t | � g } t j | � } ~ t j � | j | � | j | � | j
| � d � | j � t j � | j | � | j g � | j
| � d � Wd QRXd S)N) r) r rR r rA rB r r r8 r= rC r? )r rD r7 rE r r r rH � s
z/SelfCycleFinalizationTest.test_simple_resurrectc
C s� t j � �� t � } t | � g } t j | � } ~ t j � | j | � | j g � | j
| � d � t j � | j | � | j g � | j
| � d � Wd QRXd S)N) r) r rS r rA rB r r r8 r= rC )r rD r7 rE r r r �test_simple_suicide s
z-SelfCycleFinalizationTest.test_simple_suicideN)r
r r r$ rF rH rU r r r r rT � s rT c s. e Z d Z d d � Z � f d d � Z � S)� ChainedBasec C s d | _ | | _ | | _ d S)NF)�suicided�left�right)r rX r r r �chain& s zChainedBase.chainc s� t � j � | j rC | j d k s+ t � | j d k s� t � n~ | j } | j rm | j d k s� t � n | j | k s� t � | j } | j r� | j d k s� t � n | j | k s� t � d S)N)rO r rW rX r, rY )r rX rY )rP r r r + s
zChainedBase.check_sanity)r
r r rZ r r r )rP r rV $ s rV c @ s e Z d Z d S)�
SimpleChainedN)r
r r r r r r r[ < s r[ c @ s e Z d Z d S)�ChainedResurrectorN)r
r r r r r r r\ ? s r\ c @ s e Z d Z d d � Z d S)�SuicidalChainedc C s d | _ d | _ d | _ d S)z7
Explicitly break the reference cycle.
TN)rW rX rY )r r r r r D s zSuicidalChained.side_effectN)r
r r r r r r r r] B s r] c @ s� e Z d Z d Z d d � Z d d � Z d d � Z d d � Z d
d � Z d d
� Z d d � Z
d d � Z d d � Z d d � Z
d d � Z d S)�CycleChainFinalizationTestz�
Test finalization of a cyclic chain. These tests are similar in
spirit to the self-cycle tests above, but the collectable object
graph isn't trivial anymore.
c C sM d d � | D� } x3 t t | � � D] } | | j | | d � q& W| S)Nc S s g | ] } | � � q Sr r )r: r r r r �
<listcomp>U s z:CycleChainFinalizationTest.build_chain.<locals>.<listcomp>� )�range�lenrZ )r �classes�nodes�ir r r � build_chainT s z&CycleChainFinalizationTest.build_chainc C s� t | � } t j � �� | j | � } d d � | D� } d d � | D� } ~ t j � | j | � | j g � | j d d � | D� d g | � t j � | j | � Wd QRXd S)Nc S s g | ] } t | � � q Sr )r )r: rD r r r r_ ^ s zKCycleChainFinalizationTest.check_non_resurrecting_chain.<locals>.<listcomp>c S s g | ] } t j | � � q Sr )rA rB )r: rD r r r r_ _ s c S s g | ] } | � � q Sr r )r: rE r r r r_ d s ) rb r) r rf r r r8 r= r4 )r rc �Nrd r7 �wrsr r r � check_non_resurrecting_chainZ s
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z7CycleChainFinalizationTest.check_non_resurrecting_chainc C s� t | � } t j � �� | j | � } t | � } d d � | D� } d d � | D� } d d � | D� } ~ t j � | j | � | j | � | j d d � | D� d g | � | j � t j � | j | � | j g � Wd QRXd S)Nc S s g | ] } t | � � q Sr )r )r: rD r r r r_ m s zGCycleChainFinalizationTest.check_resurrecting_chain.<locals>.<listcomp>c S s+ g | ]! } t | t � r t | � � q Sr )�
isinstancer0 r )r: rD r r r r_ n s c S s g | ] } t j | � � q Sr )rA rB )r: rD r r r r_ o s c S s g | ] } | � � q Sr r )r: rE r r r r_ u s )
rb r) r rf r r r8 r= r4 r? )r rc rg rd r7 Z survivor_idsrh r r r �check_resurrecting_chainh s
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z3CycleChainFinalizationTest.check_resurrecting_chainc C s | j t g d � d S)N� )ri r[ )r r r r �test_homogenous{ s z*CycleChainFinalizationTest.test_homogenousc C s | j t g d � d S)Nrl )rk r\ )r r r r �test_homogenous_resurrect~ s z4CycleChainFinalizationTest.test_homogenous_resurrectc C s | j t g d � d S)Nrl )ri r] )r r r r �test_homogenous_suicidal� s z3CycleChainFinalizationTest.test_homogenous_suicidalc C s | j t t g d � d S)NrL )ri r] r[ )r r r r � test_heterogenous_suicidal_one� s z9CycleChainFinalizationTest.test_heterogenous_suicidal_onec C s# | j t g d t g d � d S)NrL )ri r] r[ )r r r r � test_heterogenous_suicidal_two� s z9CycleChainFinalizationTest.test_heterogenous_suicidal_twoc C s | j t t g d � d S)NrL )rk r\ r[ )r r r r � test_heterogenous_resurrect_one� s z:CycleChainFinalizationTest.test_heterogenous_resurrect_onec C s | j t t t g d � d S)NrL )rk r\ r[ r] )r r r r � test_heterogenous_resurrect_two� s z:CycleChainFinalizationTest.test_heterogenous_resurrect_twoc C s. | j t g d t g d t g d � d S)NrL )rk r\ r[ r] )r r r r �!test_heterogenous_resurrect_three� s z<CycleChainFinalizationTest.test_heterogenous_resurrect_threeN)r
r r r$ rf ri rk rm rn ro rp rq rr rs rt r r r r r^ M s r^ c @ s( e Z d Z d d � Z d d � Z d S)�
LegacyBasec C si y- | j s, | j j t | � � | j � Wn5 t k
rd } z | j j | � WYd d } ~ Xn Xd S)N)r r r r r r! r )r r" r r r r# � s zLegacyBase.__del__c C ss y7 | j s6 | j j t | � � | j � | j � Wn5 t k
rn } z | j j | � WYd d } ~ Xn Xd S)zJ
Legacy (pre-PEP 442) finalizer, mapped to a tp_del slot.
N)r r r r r r r! r )r r" r r r �
__tp_del__� s
zLegacyBase.__tp_del__N)r
r r r# rv r r r r ru � s
ru c @ s e Z d Z d S)�LegacyN)r
r r r r r r rw � s rw c @ s e Z d Z d d � Z d S)�LegacyResurrectorc C s | j j | � d S)zF
Resurrect self by storing self in a class-wide list.
N)r r )r r r r r � s z LegacyResurrector.side_effectN)r
r r r r r r r rx � s rx c @ s e Z d Z d S)�LegacySelfCycleN)r
r r r r r r ry � s ry c sL e Z d Z d Z � f d d � Z d d � Z d d � Z d d � Z � S)
�LegacyFinalizationTestz5
Test finalization of objects with a tp_del.
c s( t j j � t j � t � j � d S)N)r r r r rO r5 )r )rP r r r5 � s
z LegacyFinalizationTest.tearDownc
C s� t j � �� t � } t | � g } t j | � } ~ t j � | j | � | j | � | j
g � | j | � d � t j � | j | � | j | � Wd QRXd S)N) r) r rw r rA rB r r r8 r9 r= rC )r rD r7 rE r r r � test_legacy� s
z"LegacyFinalizationTest.test_legacyc
C s� t j � �� t � } t | � g } t j | � } ~ t j � | j | � | j | � | j
| � | j | � d � | j � t j � | j | � | j | d � | j
| � Wd QRX| j | � d � d S)NrL )
r) r rx r rA rB r r r8 r9 r= rC r? )r rD r7 rE r r r �test_legacy_resurrect� s
z,LegacyFinalizationTest.test_legacy_resurrectc
C s� t j � �� t � } t | � g } t j | � } ~ t j � | j g � | j g � | j
g � | j | � | j | � d � d t j
d _ Wd QRX| j g � | j | � d � d S)Nr )r) r ry r rA rB r r r8 r9 r= r> rG r rC )r rD r7 rE r r r �test_legacy_self_cycle� s
z-LegacyFinalizationTest.test_legacy_self_cycle)r
r r r$ r5 r{ r| r} r r )rP r rz � s
rz �__main__)%r$ r' r ZunittestrA Z _testcapir � ImportErrorr r r r) r- r. r/ r0 r1 ZTestCaser@ rN rQ rR rS rT rV r[ r\ r] r^ ru rw rx ry Z cpython_onlyrz r
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