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Tests for object finalization semantics, as outlined in PEP 442.
� N)� with_tp_delc C s G dd� dt �}|S )Nc @ � e Zd Zdd� ZdS )zwith_tp_del.<locals>.Cc _ � t d��)Nz requires _testcapi.with_tp_del�� TypeError��cls�args�kwargs� r �-/usr/lib/python3.10/test/test_finalization.py�__new__ � z with_tp_del.<locals>.C.__new__N��__name__�
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without_gcc C s G dd� d�}|S )Nc @ r )zwithout_gc.<locals>.Cc _ r )Nz requires _testcapi.without_gcr r r r r r
r z without_gc.<locals>.C.__new__Nr r r r r r r r r r r r r r s r )�supportc @ s^ e Zd ZdZg Zg Zg Zg ZdZdZ e
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The base class for all the objects under test, equipped with various
testing features.
Fr c C s> | j �� | j�� tj�� t�� | 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 s� � t �� �3 | j�� | j�� dt_zdV | jr | jd �W dt_| �� ndt_| �� w W d � dS 1 s;w Y dS )zI
A context manager to use around all finalization tests.
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disable_gcr! r r" r � _cleaningr r$ r# r r r �test7 s �
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� "�zNonGCSimpleBase.testc C � dS )z8
Check the object is sane (non-broken).
Nr ��selfr r r � check_sanityI � z NonGCSimpleBase.check_sanityc
C �f z| j s| j�t| �� | �� | �� W dS W dS ty2 } z
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PEP 442 finalizer. Record that this was called, check the
object is in a sane state, and invoke a side effect.
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A side effect called on destruction.
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SimpleBasec C s t | �| _d S r )r/ �id_r) r r r �__init__c � zSimpleBase.__init__c C s | j t| �ks J �d S r )r< r/ r) r r r r+ f � zSimpleBase.check_sanityN)r r r r= r+ r r r r r; a s r; c @ s e Zd ZdZdS )�NonGCr N)r r r r6 r r r r r@ j s r@ c @ s e Zd ZdZdd� ZdS )�NonGCResurrectorr c C � | j �| � dS �zF
Resurrect self by storing self in a class-wide list.
N�r r. r) r r r r0 r � z NonGCResurrector.side_effectN)r r r r6 r0 r r r r rA n s rA c @ � e Zd ZdS )�SimpleN�r r r r r r r rG x � rG c @ r )�SimpleResurrectorc C rB rC rD r) r r r r0 ~ rE z SimpleResurrector.side_effectN�r r r r0 r r r r rJ | � rJ c @ sD e Zd Zdd� Zdd� Zdd� Zdd� Zd d
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d� Z dS )�TestBasec C s" t jd d � | _g t jd d �< d S r )r r � old_garbager) r r r �setUp� s zTestBase.setUpc C s0 z| � tjg � W | `t�� d S | `t�� w r )� assertEqualr r rN r r) r r r �tearDown� s �
zTestBase.tearDownc C � | � ttj�t|�� d S r )rP �sortedr; r! �r* �idsr r r �assert_del_calls� � zTestBase.assert_del_callsc C rR r )rP rS r; r" rT r r r �assert_tp_del_calls� rW z TestBase.assert_tp_del_callsc C �$ | � tdd� tjD ��t|�� d S )Nc s � � | ]}t |�V qd S r �r/ ��.0�xr r r � <genexpr>� � � z,TestBase.assert_survivors.<locals>.<genexpr>)rP rS r; r rT r r r �assert_survivors� � $zTestBase.assert_survivorsc C rY )Nc s rZ r r[ r\ r r r r_ � r` z*TestBase.assert_garbage.<locals>.<genexpr>)rP rS r r rT r r r �assert_garbage� rb zTestBase.assert_garbagec C s t j�� d S r )r; r r r) r r r �clear_survivors� r> zTestBase.clear_survivorsN)
r r r rO rQ rV rX ra rc rd r r r r rM � s rM c @ s< e Zd ZdZdd� Zdd� Zejdd� �Zejdd � �Z d
S ) �SimpleFinalizationTestz.
Test finalization without refcycles.
c C � t �� �: t� }t|�g}t�|�}~t�� | �|� | � g � | �
|� d � t�� | �|� | � g � W d � d S 1 sAw Y d S r ) r; r' rG r/ �weakref�refr r rV ra �assertIs�r* �srU �wrr r r � test_simple� �
"�z"SimpleFinalizationTest.test_simplec C s� t �� �= t� }t|�g}t�|�}~t�� | �|� | � |� | �
|� d � | � � t�� | �|� | � g � W d � n1 sDw Y | � |� d � d S r )
r; r' rJ r/ rg rh r r rV ra � assertIsNotrd ri rj r r r �test_simple_resurrect� s
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z,SimpleFinalizationTest.test_simple_resurrectc C s� t �� �6 t� }| �t�|�� t|�g}~t�� | �|� | � g � t�� | �|� | � g � W d � d S 1 s=w Y d S r )
r; r' r@ � assertFalser �
is_trackedr/ r rV ra �r* rk rU r r r � test_non_gc� s
"�z"SimpleFinalizationTest.test_non_gcc C s� t �� �< t� }| �t�|�� t|�g}~t�� | �|� | � |� | �
� t�� | �|d � | � |� W d � d S 1 sCw Y d S �N� ) r; r' rA rq r rr r/ r rV ra rd rs r r r �test_non_gc_resurrect� s
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re c s( e Zd Z� fdd�Z� fdd�Z� ZS )�
SelfCycleBasec s t � �� | | _d S r )�superr= rh r) �� __class__r r r= � s
zSelfCycleBase.__init__c s t � �� | j| u s J �d S r )rz r+ rh r) r{ r r r+ � s
zSelfCycleBase.check_sanity)r r r r= r+ �
__classcell__r r r{ r ry � s ry c @ rF )�SimpleSelfCycleNrH r r r r r~ � rI r~ c @ rF )�SelfCycleResurrectorNrH r r r r r � rI r c @ r )�SuicidalSelfCyclec C s
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Explicitly break the reference cycle.
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Test finalization of an object having a single cyclic reference to
itself.
c C rf r ) r; r' r~ r/ rg rh r r rV ra ri rj r r r rm rn z%SelfCycleFinalizationTest.test_simplec C s� t �� �E t� }t|�g}t�|�}~t�� | �|� | � |� | �
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|� d � t�� | �|� | � g � | �
|� d � W d � d S 1 sHw Y d S r ) r; r' r� r/ rg rh r r rV ra ri rj r r r �test_simple_suicide% s
"�z-SelfCycleFinalizationTest.test_simple_suicideN)r r r r5 rm rp r� r r r r r� � s
r� c s$ e Zd Zdd� Z� fdd�Z� ZS )� ChainedBasec C s d| _ || _| |_d S )NF��suicided�left�right)r* r� r r r �chain9 s
zChainedBase.chainc s� t � �� | jr| jd u sJ �| jd u sJ �d S | j}|jr&|jd u s%J �n|j| u s-J �| j}|jr<|jd u s:J �d S |j| u sCJ �d S r )rz r+ r� r� r� )r* r� r� r{ r r r+ > s
zChainedBase.check_sanity)r r r r� r+ r} r r r{ r r� 7 s r� c @ rF )�
SimpleChainedNrH r r r r r� O rI r� c @ rF )�ChainedResurrectorNrH r r r r r� R rI r� c @ r )�SuicidalChainedc C s d| _ d| _d| _dS )r� TNr� r) r r r r0 W s
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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.
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<listcomp>h � z:CycleChainFinalizationTest.build_chain.<locals>.<listcomp>� )�range�lenr� )r* �classes�nodes�ir r r � build_chaing s z&CycleChainFinalizationTest.build_chainc C s� t |�}t�� �B | �|�}dd� |D �}dd� |D �}~t�� | �|� | �g � | �dd� |D �d g| � t�� | �|� W d � d S 1 sMw Y d S )Nc S � g | ]}t |��qS r r[ �r] rk r r r r� q � zKCycleChainFinalizationTest.check_non_resurrecting_chain.<locals>.<listcomp>c S � g | ]}t �|��qS r �rg rh r� r r r r� r � c S r� r r �r] rl r r r r� w r� ) r� r; r' r� r r rV ra rP )r* r� �Nr� rU �wrsr r r � check_non_resurrecting_chainm s
"�z7CycleChainFinalizationTest.check_non_resurrecting_chainc C s� t |�}t�� �V | �|�}t |�}dd� |D �}dd� |D �}dd� |D �}~t�� | �|� | �|� | �dd� |D �d g| � | � � t�� | �|� | �g � W d � d S 1 saw Y d S )Nc S r� r r[ r� r r r r� � r� zGCycleChainFinalizationTest.check_resurrecting_chain.<locals>.<listcomp>c S s g | ] }t |t�rt|��qS r )�
isinstancerJ r/ r� r r r r� � s c S r� r r� r� r r r r� � r� c S r� r r r� r r r r� � r� )
r� r; r' r� r r rV ra rP rd )r* r� r� r� rU � survivor_idsr� r r r �check_resurrecting_chain{ s"
"�z3CycleChainFinalizationTest.check_resurrecting_chainc C � | � tgd � d S �N� )r� r� r) r r r �test_homogenous� � z*CycleChainFinalizationTest.test_homogenousc C r� r� )r� r� r) r r r �test_homogenous_resurrect� r� z4CycleChainFinalizationTest.test_homogenous_resurrectc C r� r� )r� r� r) r r r �test_homogenous_suicidal� r� z3CycleChainFinalizationTest.test_homogenous_suicidalc C � | � ttgd � d S ru �r� r� r� r) r r r � test_heterogenous_suicidal_one� r? z9CycleChainFinalizationTest.test_heterogenous_suicidal_onec C s | � tgd tgd � d S ru r� r) r r r � test_heterogenous_suicidal_two� s �z9CycleChainFinalizationTest.test_heterogenous_suicidal_twoc C r� ru )r� r� r� r) r r r � test_heterogenous_resurrect_one� r? z:CycleChainFinalizationTest.test_heterogenous_resurrect_onec C s | � tttgd � d S ru �r� r� r� r� r) r r r � test_heterogenous_resurrect_two� s �z:CycleChainFinalizationTest.test_heterogenous_resurrect_twoc C s( | � tgd tgd tgd � d S ru r� r) r r r �!test_heterogenous_resurrect_three� s �z<CycleChainFinalizationTest.test_heterogenous_resurrect_threeN)r r r r5 r� r� r� r� r� r� r� r� r� r� r� r r r r r� ` s r� c @ r: )�
LegacyBasec
C s^ z| j s| j�t| �� | �� W d S W d S ty. } z
| j�|� W Y d }~d S d }~ww r )r& r! r. r/ r+ r1 r r2 r r r r4 � s ���zLegacyBase.__del__c
C r- )zJ
Legacy (pre-PEP 442) finalizer, mapped to a tp_del slot.
N)r& r" r. r/ r+ r0 r1 r r2 r r r �
__tp_del__� s ���zLegacyBase.__tp_del__N)r r r r4 r� r r r r r� � s
r� c @ rF )�LegacyNrH r r r r r� � � r� c @ r )�LegacyResurrectorc C rB rC rD r) r r r r0 � rE z LegacyResurrector.side_effectNrK r r r r r� � s r� c @ rF )�LegacySelfCycleNrH r r r r r� � r� r� c s8 e Zd ZdZ� fdd�Zdd� Zdd� Zdd � Z� ZS )
�LegacyFinalizationTestz5
Test finalization of objects with a tp_del.
c s t j�� t �� t� �� d S r )r r r r rz rQ r) r{ r r rQ � s
z LegacyFinalizationTest.tearDownc C s� t �� �? t� }t|�g}t�|�}~t�� | �|� | � |� | �
g � | � |� d � t�� | �|� | � |� W d � d S 1 sFw Y d S r ) r; r' r� r/ rg rh r r rV rX ra ri rj r r r � test_legacy� s
"�z"LegacyFinalizationTest.test_legacyc C s� t �� �I t� }t|�g}t�|�}~t�� | �|� | � |� | �
|� | � |� d � | � � t�� | �|� | � |d � | �
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r; r' r� r/ rg rh r r rV rX ra ri rd rj r r r �test_legacy_resurrect� s"
�z,LegacyFinalizationTest.test_legacy_resurrectc C s� t �� �; t� }t|�g}t�|�}~t�� | �g � | � g � | �
g � | � |� | � |� d � d tj
d _W d � n1 sBw Y | � g � | �|� d � d S )Nr )r; r' r� r/ rg rh r r rV rX ra rc ro r ri rj r r r �test_legacy_self_cycle s
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z-LegacyFinalizationTest.test_legacy_self_cycle) r r r r5 rQ r� r� r� r} r r r{ r r� � s r� �__main__)&r5 r8 r �unittestrg � _testcapir � ImportErrorr r' r r r; r@ rA rG rJ rM �TestCasere ry r~ r r� r� r� r� r� r� r� r� r� r� r� rx r� r �mainr r r r �<module> s` � � B A
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