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Test cases for the L{twisted.python.reflect} module.
� )�division�absolute_importN)�deque)�_PY3)�unittest)�SynchronousTestCase)�reflect)�accumulateMethods�prefixedMethods�prefixedMethodNames�addMethodNamesToDict�fullyQualifiedNamec @ s e Zd ZdZdd� ZdS )�Basez`
A no-op class which can be used to verify the behavior of
method-discovering APIs.
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A no-op method which can be discovered.
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__module__� __qualname__�__doc__r r r r r r s r c @ s e Zd ZdZdS )�SubzF
A subclass of a class with a method which can be discovered.
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A no-op class with methods with differing prefixes.
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A no-op method which a matching prefix to be discovered.
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A no-op method with a mismatched prefix to not be discovered.
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bad_method6 s zSeparate.bad_methodN)r r r r r r r r r r r + s r c @ s( e Zd ZdZdd� Zdd� Zdd� ZdS ) �AccumulateMethodsTestszt
Tests for L{accumulateMethods} which finds methods on a class hierarchy and
adds them to a dictionary.
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If x is and instance of Base and Base defines a method named method,
L{accumulateMethods} adds an item to the given dictionary with
C{"method"} as the key and a bound method object for Base.method value.
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test_ownClassC s
z$AccumulateMethodsTests.test_ownClassc C s* t � }i }t||� | �d|ji|� dS )a
If x is an instance of Sub and Sub is a subclass of Base and Base
defines a method named method, L{accumulateMethods} adds an item to the
given dictionary with C{"method"} as the key and a bound method object
for Base.method as the value.
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If a prefix is given, L{accumulateMethods} limits its results to
methods beginning with that prefix. Keys in the resulting dictionary
also have the prefix removed from them.
�good_r N)r r r r r r r r � test_prefix\ s z"AccumulateMethodsTests.test_prefixN)r r r r r! r" r$ r r r r r = s
r c @ s e Zd ZdZdd� Zdd� ZdS )�PrefixedMethodsTestszr
Tests for L{prefixedMethods} which finds methods on a class hierarchy and
adds them to a dictionary.
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L{prefixedMethods} returns a list of the methods discovered on an
object.
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r r r r r r �test_onlyObjecto s z$PrefixedMethodsTests.test_onlyObjectc C s$ t � }t|d�}| �|jg|� dS )zo
If a prefix is given, L{prefixedMethods} returns only methods named
with that prefix.
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r% c @ s e Zd ZdZdd� Zdd� ZdS )�PrefixedMethodNamesTestsz+
Tests for L{prefixedMethodNames}.
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L{prefixedMethodNames} returns a list including methods with the given
prefix defined on the class passed to it.
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L{prefixedMethodNames} returns a list included methods with the given
prefix defined on base classes of the class passed to it.
c @ s e Zd ZdS )z<PrefixedMethodNamesTests.test_inheritedMethod.<locals>.ChildN�r r r r r r r �Child� s r* r r# N)r r r )r r* r r r �test_inheritedMethod� s z-PrefixedMethodNamesTests.test_inheritedMethodN)r r r r r( r+ r r r r r' � s r' c @ s e Zd ZdZdd� ZdS )�AddMethodNamesToDictTestsz,
Tests for L{addMethodNamesToDict}.
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If C{baseClass} is passed to L{addMethodNamesToDict}, only methods which
are a subclass of C{baseClass} are added to the result dictionary.
c @ s e Zd ZdS )z;AddMethodNamesToDictTests.test_baseClass.<locals>.AlternateNr) r r r r � Alternate� s r- c @ s e Zd Zdd� ZdS )z7AddMethodNamesToDictTests.test_baseClass.<locals>.Childc S s d S �Nr r r r r �good_alternate� s zFAddMethodNamesToDictTests.test_baseClass.<locals>.Child.good_alternateN)r r r r/ r r r r r* � s r* r# Z alternate� N)�objectr r r )r r- r* �resultr r r r" � s
z(AddMethodNamesToDictTests.test_baseClassN)r r r r r" r r r r r, � s r, c @ s e Zd ZdZdd� ZdS )�Summerz9
A class we look up as part of the LookupsTests.
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Do something.
Nr r r r r � reallySet� s zSummer.reallySetN)r r r r r4 r r r r r3 � s r3 c @ sx e Zd ZdZdd� Zdd� Zdd� Zdd � Zd
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Tests for L{namedClass}, L{namedModule}, and L{namedAny}.
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L{namedClass} should return the class object for the name it is passed.
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namedClassr3 r r r r �test_namedClassLookup� s �z"LookupsTests.test_namedClassLookupc C s" ddl m} | �t�d�|� dS )zc
L{namedModule} should return the module object for the name it is
passed.
r ��monkey�twisted.python.monkeyN)�twisted.pythonr: r7 r Z namedModule�r r: r r r �test_namedModuleLookup� s
�z#LookupsTests.test_namedModuleLookupc C s ddl }| �t�d�|j� dS )zY
L{namedAny} should return the package object for the name it is passed.
r N�twisted.python)r< r7 r �namedAny�python�r �twistedr r r �test_namedAnyPackageLookup� s
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L{namedAny} should return the module object for the name it is passed.
r r9 r; N)r< r: r7 r r@ r= r r r �test_namedAnyModuleLookup� s
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L{namedAny} should return the class object for the name it is passed.
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L{namedAny} should return the object an attribute of a non-module,
non-package object is bound to for the name it is passed.
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L{namedAny} should return the object an attribute of an object which
itself was an attribute of a non-module, non-package object is bound to
for the name it is passed.
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Exceptions raised by modules which L{namedAny} causes to be imported
should pass through L{namedAny} to the caller.
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If segments on the end of a fully-qualified Python name represents
attributes which aren't actually present on the object represented by
the earlier segments, L{namedAny} should raise an L{AttributeError}.
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Passing a name which isn't a fully-qualified Python name to L{namedAny}
should result in one of the following exceptions:
- L{InvalidName}: the name is not a dot-separated list of Python
objects
- L{ObjectNotFound}: the object doesn't exist
- L{ModuleNotFound}: the object doesn't exist and there is only one
component in the name
Znosuchmoduleintheworldz(No module named 'nosuchmoduleintheworld'z@#$@(#.!@(#!@#z('@#$@(#.!@(#!@#' does not name an objectztcelfer.nohtyp.detsiwtz0'tcelfer.nohtyp.detsiwt' does not name an object� zEmpty module name)z.twistedztwisted.ztwisted..pythonzOname must be a string giving a '.'-separated list of Python identifiers, not %rN)rI r ZModuleNotFoundr@ r �strZObjectNotFoundZ InvalidName)r �errZ invalidNamer r r �test_invalidNames6 s:
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When module import fails with ImportError it returns the specified
default value.
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requireModuler7 )r �namerV r2 r r r � test_requireModuleImportError[ s z*LookupsTests.test_requireModuleImportErrorc C s t �d�}| �|� dS )zI
When module import fails it returns L{None} by default.
rT N)r rW Z assertIsNone)r r2 r r r � test_requireModuleDefaultNoneh s
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When module import succeed it returns the module and not the default
value.
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r5 c @ s$ e Zd ZdZdZdd� Zdd� ZdS )� BreakableFc C s | j rtd��ndS d S )Nzstr!z <Breakable>)�breakStr� RuntimeErrorr r r r �__str__� s
zBreakable.__str__c C s | j rtd��ndS d S )Nzrepr!z Breakable())� breakReprr^ r r r r �__repr__� s
zBreakable.__repr__N)r r r r` r] r_ ra r r r r r\ � s r\ c @ s e Zd ZdZdd� Zee�Z dS )�
BrokenTypeFc C s | j rtd��dS )Nzno namerb )� breakNamer^ r r r r � get___name__� s zBrokenType.get___name__N)r r r rc rd �propertyr r r r rb � s rb �BTBaseT)r` r] c @ s e Zd Zedd� �ZdS )� NoClassAttrc C s | j S r. )Z not_class)r r r r �<lambda>� � zNoClassAttr.<lambda>N)r r r re � __class__r r r r rg � s rg c @ sP e Zd ZdZdd� Zdd� Zdd� Zdd � Zd
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SafeReprTestsz2
Tests for L{reflect.safe_repr} function.
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L{reflect.safe_repr} produces the same output as C{repr} on a working
object.
r0 � � � aN)r �list�mapr � safe_repr�repr)r Zxsr r r �test_workingRepr� s z SafeReprTests.test_workingReprc C sJ t � }d|_t�|�}| �d|� | �tj�t�d |� | �d|� dS )z�
L{reflect.safe_repr} returns a string with class name, address, and
traceback when the repr call failed.
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z SafeReprTests.test_brokenReprc C s& t � }d|_| �t�|�t|�� dS )zT
L{reflect.safe_repr} isn't affected by a broken C{__str__} method.
TN)r\ r] r r rq rr �r r{ r r r �test_brokenStr� s z SafeReprTests.test_brokenStrc C s* G dd� dt �}t�|� t�|� � d S )Nc @ s e Zd ZdZdS )z-SafeReprTests.test_brokenClassRepr.<locals>.XTN�r r r r` r r r r �X� s r� �rf r rq �r r� r r r �test_brokenClassRepr� s
z"SafeReprTests.test_brokenClassReprc C sB G dd� dt �}t�|�}dt|�f }| �||�d�d � dS )z�
C{id} is used to print the ID of the object in case of an error.
L{safe_repr} includes a traceback after a newline, so we only check
against the first line of the repr.
c @ s e Zd ZdZdS )z2SafeReprTests.test_brokenReprIncludesID.<locals>.XTNr r r r r r� � s r� z-<BrokenType instance at 0x%x with repr error:�
r N)rf r rq �idr �split)r r� �xReprZ
xReprExpectedr r r �test_brokenReprIncludesID� s
�z'SafeReprTests.test_brokenReprIncludesIDc C s* G dd� dt �}t�|� t�|� � d S )Nc @ s e Zd ZdZdS )z,SafeReprTests.test_brokenClassStr.<locals>.XTN�r r r r] r r r r r� � s r� r� r� r r r �test_brokenClassStr� s
z!SafeReprTests.test_brokenClassStrc C sJ t � }d|_t�|�}| �d|� | �tj�t�d |� | �d|� dS )z�
If an object raises an exception when accessing its C{__class__}
attribute, L{reflect.safe_repr} uses C{type} to retrieve the class
object.
T�NoClassAttr instance at 0xr rt N) rg r` r rq ru rv rw rx ry rz r r r �test_brokenClassAttribute� s
z'SafeReprTests.test_brokenClassAttributec C sP G dd� dt �}t�|� �}| �d|� | �tj�t�d |� | �d|� dS )z�
If a class raises an exception when accessing its C{__name__} attribute
B{and} when calling its C{__str__} implementation, L{reflect.safe_repr}
returns 'BROKEN CLASS' instead of the class name.
c @ s e Zd ZdZdS )z6SafeReprTests.test_brokenClassNameAttribute.<locals>.XTN�r r r rc r r r r r� s r� �<BROKEN CLASS AT 0xr rt N)rf r rq ru rv rw rx ry )r r� r� r r r � test_brokenClassNameAttribute� s
z+SafeReprTests.test_brokenClassNameAttributeN) r r r r rs r| r~ r� r� r� r� r� r r r r rk � s rk c @ sz e Zd ZdZdd� Zdd� Zdd� Zdd � Zd
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Tests for L{reflect.safe_str} function.
c C s$ dddg}| � t�|�t|�� d S )Nr0 rl rm )r r �safe_strrQ �r r r r r �test_workingStr s
z SafeStrTests.test_workingStrc C s t � }d|_t�|� d S �NT)r\ r] r r� r} r r r r~ s zSafeStrTests.test_brokenStrc C s d}| � t�|�d� dS )zh
L{safe_str} for C{str} with ascii-only data should return the
value unchanged.
�aN�r r r� r� r r r �test_workingAscii s z SafeStrTests.test_workingAsciic C s d}| � t�|�|� dS )zk
L{safe_str} for C{str} with utf-8 encoded data should return the
value unchanged.
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L{safe_str} for C{bytes} with utf-8 encoded data should return
the value decoded into C{str}.
r� �utf-8N)r r r� �decoder� r r r �test_workingUtf8_3- s z SafeStrTests.test_workingUtf8_3z)Skip Python 2 specific test for utf-8 strz+Skip Python 3 specific test for utf-8 bytesc C s" d}t �|�}| �|t|�� dS )z=
Use str() for non-utf8 bytes: "b'non-utf8'"
� �N)r r� r rQ )r r �xStrr r r �test_brokenUtf8@ s
z SafeStrTests.test_brokenUtf8c C s t � }d|_t�|� d S r� )r\ r` r r� r} r r r r| I s z SafeStrTests.test_brokenReprc C s* G dd� dt �}t�|� t�|� � d S )Nc @ s e Zd ZdZdS )z+SafeStrTests.test_brokenClassStr.<locals>.XTNr� r r r r r� P s r� �rf r r� r� r r r r� O s
z SafeStrTests.test_brokenClassStrc C s* G dd� dt �}t�|� t�|� � d S )Nc @ s e Zd ZdZdS )z,SafeStrTests.test_brokenClassRepr.<locals>.XTNr r r r r r� W s r� r� r� r r r r� V s
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If an object raises an exception when accessing its C{__class__}
attribute, L{reflect.safe_str} uses C{type} to retrieve the class
object.
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z&SafeStrTests.test_brokenClassAttributec C sP G dd� dt �}t�|� �}| �d|� | �tj�t�d |� | �d|� dS )z�
If a class raises an exception when accessing its C{__name__} attribute
B{and} when calling its C{__str__} implementation, L{reflect.safe_str}
returns 'BROKEN CLASS' instead of the class name.
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z*SafeStrTests.test_brokenClassNameAttributeN)r r r r r� r~ r� r� r� r �skipr� r| r� r� r� r� r r r r r� s � r� c @ s0 e Zd ZdZdd� Zdd� Zdd� Zdd � Zd
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Test L{filenameToModuleName} detection.
c C s� t j�| �� dd�| _t �| j� tt j�| jd�d��}|�d� W 5 Q R X tt j�t j�| j�d�d��}|�d� W 5 Q R X d S )NZ fakepackageZtestz __init__.py�wrP )rv rw �joinZmktemp�makedirs�open�write�dirname)r �fr r r �setUp s �zFilenameToModuleTests.setUpc C s< t �| j�}| �|d� t �| jtjj �}| �|d� dS )zk
L{filenameToModuleName} returns the correct module (a package) given a
directory.
zfakepackage.testN)r �filenameToModuleNamerw r rv �sep�r �moduler r r �test_directory� s z$FilenameToModuleTests.test_directoryc C s& t �tj�| jd��}| �|d� dS )zh
L{filenameToModuleName} returns the correct module given the path to
its file.
ztest_reflect.py� fakepackage.test.test_reflectN)r r� rv rw r� r r� r r r � test_file� s �z FilenameToModuleTests.test_filec C s, t �tj�| j�d�d��}| �|d� dS )zo
L{filenameToModuleName} returns the correct module given a C{bytes}
path to its file.
r� s test_reflect.pyr� N)r r� rv rw r� �encoder r� r r r �
test_bytes� s �z FilenameToModuleTests.test_bytesN)r r r r r� r� r� r� r r r r r� z s
r� c @ sH e Zd ZdZdd� Zdd� Zdd� Zdd � Zd
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Test for L{fullyQualifiedName}.
c C s | � t|�|� dS )ze
Helper to check that fully qualified name of C{obj} results to
C{expected}.
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L{fullyQualifiedName} returns the full name of a package and a
subpackage.
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L{fullyQualifiedName} returns the name of a module inside a package.
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L{fullyQualifiedName} returns the name of a class and its module.
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L{fullyQualifiedName} returns the name of a function inside its module.
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test_function� s �z%FullyQualifiedNameTests.test_functionc C s | � | jdt| jjf � dS )zs
L{fullyQualifiedName} returns the name of a bound method inside its
class and its module.
z%s.%s.test_boundMethodN)r� �test_boundMethodr rj r r r r r� � s �z(FullyQualifiedNameTests.test_boundMethodc C s | � | jjdt| jjf � dS )zv
L{fullyQualifiedName} returns the name of an unbound method inside its
class and its module.
z%s.%s.test_unboundMethodN)r� rj �test_unboundMethodr r r r r r� � s �z*FullyQualifiedNameTests.test_unboundMethodN) r r r r r� r� r� r� r� r� r� r r r r r� � s
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dS )�ObjectGrepTestsz=twisted.python.reflect.objgrep hasn't been ported to Python 3c C sJ t � }d|i}|di}| �dt�||tj�� | �dt�||tj�� dS )zV
Test references search through a dictionary, as a key or as a value.
Nz[None]z{None}�r1 ru r �objgrep�isSame)r �oZd1Zd2r r r �test_dictionary� s
z ObjectGrepTests.test_dictionaryc C s* t � }d|g}| �dt�||tj�� dS )z8
Test references search through a list.
N�[1]r� )r r� �Lr r r � test_list s zObjectGrepTests.test_listc C s* t � }|df}| �dt�||tj�� dS )z9
Test references search through a tuple.
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test_tuple
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Test references search through an object attribute.
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