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# mock.py
# Test tools for mocking and patching.
# Maintained by Michael Foord
# Backport for other versions of Python available from
# https://pypi.org/project/mock
__all__ = (
'Mock',
'MagicMock',
'patch',
'sentinel',
'DEFAULT',
'ANY',
'call',
'create_autospec',
'AsyncMock',
'ThreadingMock',
'FILTER_DIR',
'NonCallableMock',
'NonCallableMagicMock',
'mock_open',
'PropertyMock',
'seal',
)
import asyncio
import contextlib
import io
import inspect
import pprint
import sys
import builtins
import pkgutil
from inspect import iscoroutinefunction
import threading
from dataclasses import fields, is_dataclass
from types import CodeType, ModuleType, MethodType
from unittest.util import safe_repr
from functools import wraps, partial
from threading import RLock
class InvalidSpecError(Exception):
"""Indicates that an invalid value was used as a mock spec."""
_builtins = {name for name in dir(builtins) if not name.startswith('_')}
FILTER_DIR = True
# Workaround for issue #12370
# Without this, the __class__ properties wouldn't be set correctly
_safe_super = super
def _is_async_obj(obj):
if _is_instance_mock(obj) and not isinstance(obj, AsyncMock):
return False
if hasattr(obj, '__func__'):
obj = getattr(obj, '__func__')
return iscoroutinefunction(obj) or inspect.isawaitable(obj)
def _is_async_func(func):
if getattr(func, '__code__', None):
return iscoroutinefunction(func)
else:
return False
def _is_instance_mock(obj):
# can't use isinstance on Mock objects because they override __class__
# The base class for all mocks is NonCallableMock
return issubclass(type(obj), NonCallableMock)
def _is_exception(obj):
return (
isinstance(obj, BaseException) or
isinstance(obj, type) and issubclass(obj, BaseException)
)
def _extract_mock(obj):
# Autospecced functions will return a FunctionType with "mock" attribute
# which is the actual mock object that needs to be used.
if isinstance(obj, FunctionTypes) and hasattr(obj, 'mock'):
return obj.mock
else:
return obj
def _get_signature_object(func, as_instance, eat_self):
"""
Given an arbitrary, possibly callable object, try to create a suitable
signature object.
Return a (reduced func, signature) tuple, or None.
"""
if isinstance(func, type) and not as_instance:
# If it's a type and should be modelled as a type, use __init__.
func = func.__init__
# Skip the `self` argument in __init__
eat_self = True
elif isinstance(func, (classmethod, staticmethod)):
if isinstance(func, classmethod):
# Skip the `cls` argument of a class method
eat_self = True
# Use the original decorated method to extract the correct function signature
func = func.__func__
elif not isinstance(func, FunctionTypes):
# If we really want to model an instance of the passed type,
# __call__ should be looked up, not __init__.
try:
func = func.__call__
except AttributeError:
return None
if eat_self:
sig_func = partial(func, None)
else:
sig_func = func
try:
return func, inspect.signature(sig_func)
except ValueError:
# Certain callable types are not supported by inspect.signature()
return None
def _check_signature(func, mock, skipfirst, instance=False):
sig = _get_signature_object(func, instance, skipfirst)
if sig is None:
return
func, sig = sig
def checksig(self, /, *args, **kwargs):
sig.bind(*args, **kwargs)
_copy_func_details(func, checksig)
type(mock)._mock_check_sig = checksig
type(mock).__signature__ = sig
def _copy_func_details(func, funcopy):
# we explicitly don't copy func.__dict__ into this copy as it would
# expose original attributes that should be mocked
for attribute in (
'__name__', '__doc__', '__text_signature__',
'__module__', '__defaults__', '__kwdefaults__',
):
try:
setattr(funcopy, attribute, getattr(func, attribute))
except AttributeError:
pass
def _callable(obj):
if isinstance(obj, type):
return True
if isinstance(obj, (staticmethod, classmethod, MethodType)):
return _callable(obj.__func__)
if getattr(obj, '__call__', None) is not None:
return True
return False
def _is_list(obj):
# checks for list or tuples
# XXXX badly named!
return type(obj) in (list, tuple)
def _instance_callable(obj):
"""Given an object, return True if the object is callable.
For classes, return True if instances would be callable."""
if not isinstance(obj, type):
# already an instance
return getattr(obj, '__call__', None) is not None
# *could* be broken by a class overriding __mro__ or __dict__ via
# a metaclass
for base in (obj,) + obj.__mro__:
if base.__dict__.get('__call__') is not None:
return True
return False
def _set_signature(mock, original, instance=False):
# creates a function with signature (*args, **kwargs) that delegates to a
# mock. It still does signature checking by calling a lambda with the same
# signature as the original.
skipfirst = isinstance(original, type)
result = _get_signature_object(original, instance, skipfirst)
if result is None:
return mock
func, sig = result
def checksig(*args, **kwargs):
sig.bind(*args, **kwargs)
_copy_func_details(func, checksig)
name = original.__name__
if not name.isidentifier():
name = 'funcopy'
context = {'_checksig_': checksig, 'mock': mock}
src = """def %s(*args, **kwargs):
_checksig_(*args, **kwargs)
return mock(*args, **kwargs)""" % name
exec (src, context)
funcopy = context[name]
_setup_func(funcopy, mock, sig)
return funcopy
def _set_async_signature(mock, original, instance=False, is_async_mock=False):
# creates an async function with signature (*args, **kwargs) that delegates to a
# mock. It still does signature checking by calling a lambda with the same
# signature as the original.
skipfirst = isinstance(original, type)
func, sig = _get_signature_object(original, instance, skipfirst)
def checksig(*args, **kwargs):
sig.bind(*args, **kwargs)
_copy_func_details(func, checksig)
name = original.__name__
context = {'_checksig_': checksig, 'mock': mock}
src = """async def %s(*args, **kwargs):
_checksig_(*args, **kwargs)
return await mock(*args, **kwargs)""" % name
exec (src, context)
funcopy = context[name]
_setup_func(funcopy, mock, sig)
_setup_async_mock(funcopy)
return funcopy
def _setup_func(funcopy, mock, sig):
funcopy.mock = mock
def assert_called_with(*args, **kwargs):
return mock.assert_called_with(*args, **kwargs)
def assert_called(*args, **kwargs):
return mock.assert_called(*args, **kwargs)
def assert_not_called(*args, **kwargs):
return mock.assert_not_called(*args, **kwargs)
def assert_called_once(*args, **kwargs):
return mock.assert_called_once(*args, **kwargs)
def assert_called_once_with(*args, **kwargs):
return mock.assert_called_once_with(*args, **kwargs)
def assert_has_calls(*args, **kwargs):
return mock.assert_has_calls(*args, **kwargs)
def assert_any_call(*args, **kwargs):
return mock.assert_any_call(*args, **kwargs)
def reset_mock():
funcopy.method_calls = _CallList()
funcopy.mock_calls = _CallList()
mock.reset_mock()
ret = funcopy.return_value
if _is_instance_mock(ret) and not ret is mock:
ret.reset_mock()
funcopy.called = False
funcopy.call_count = 0
funcopy.call_args = None
funcopy.call_args_list = _CallList()
funcopy.method_calls = _CallList()
funcopy.mock_calls = _CallList()
funcopy.return_value = mock.return_value
funcopy.side_effect = mock.side_effect
funcopy._mock_children = mock._mock_children
funcopy.assert_called_with = assert_called_with
funcopy.assert_called_once_with = assert_called_once_with
funcopy.assert_has_calls = assert_has_calls
funcopy.assert_any_call = assert_any_call
funcopy.reset_mock = reset_mock
funcopy.assert_called = assert_called
funcopy.assert_not_called = assert_not_called
funcopy.assert_called_once = assert_called_once
funcopy.__signature__ = sig
mock._mock_delegate = funcopy
def _setup_async_mock(mock):
mock._is_coroutine = asyncio.coroutines._is_coroutine
mock.await_count = 0
mock.await_args = None
mock.await_args_list = _CallList()
# Mock is not configured yet so the attributes are set
# to a function and then the corresponding mock helper function
# is called when the helper is accessed similar to _setup_func.
def wrapper(attr, /, *args, **kwargs):
return getattr(mock.mock, attr)(*args, **kwargs)
for attribute in ('assert_awaited',
'assert_awaited_once',
'assert_awaited_with',
'assert_awaited_once_with',
'assert_any_await',
'assert_has_awaits',
'assert_not_awaited'):
# setattr(mock, attribute, wrapper) causes late binding
# hence attribute will always be the last value in the loop
# Use partial(wrapper, attribute) to ensure the attribute is bound
# correctly.
setattr(mock, attribute, partial(wrapper, attribute))
def _is_magic(name):
return '__%s__' % name[2:-2] == name
class _SentinelObject(object):
"A unique, named, sentinel object."
def __init__(self, name):
self.name = name
def __repr__(self):
return 'sentinel.%s' % self.name
def __reduce__(self):
return 'sentinel.%s' % self.name
class _Sentinel(object):
"""Access attributes to return a named object, usable as a sentinel."""
def __init__(self):
self._sentinels = {}
def __getattr__(self, name):
if name == '__bases__':
# Without this help(unittest.mock) raises an exception
raise AttributeError
return self._sentinels.setdefault(name, _SentinelObject(name))
def __reduce__(self):
return 'sentinel'
sentinel = _Sentinel()
DEFAULT = sentinel.DEFAULT
_missing = sentinel.MISSING
_deleted = sentinel.DELETED
_allowed_names = {
'return_value', '_mock_return_value', 'side_effect',
'_mock_side_effect', '_mock_parent', '_mock_new_parent',
'_mock_name', '_mock_new_name'
}
def _delegating_property(name):
_allowed_names.add(name)
_the_name = '_mock_' + name
def _get(self, name=name, _the_name=_the_name):
sig = self._mock_delegate
if sig is None:
return getattr(self, _the_name)
return getattr(sig, name)
def _set(self, value, name=name, _the_name=_the_name):
sig = self._mock_delegate
if sig is None:
self.__dict__[_the_name] = value
else:
setattr(sig, name, value)
return property(_get, _set)
class _CallList(list):
def __contains__(self, value):
if not isinstance(value, list):
return list.__contains__(self, value)
len_value = len(value)
len_self = len(self)
if len_value > len_self:
return False
for i in range(0, len_self - len_value + 1):
sub_list = self[i:i+len_value]
if sub_list == value:
return True
return False
def __repr__(self):
return pprint.pformat(list(self))
def _check_and_set_parent(parent, value, name, new_name):
value = _extract_mock(value)
if not _is_instance_mock(value):
return False
if ((value._mock_name or value._mock_new_name) or
(value._mock_parent is not None) or
(value._mock_new_parent is not None)):
return False
_parent = parent
while _parent is not None:
# setting a mock (value) as a child or return value of itself
# should not modify the mock
if _parent is value:
return False
_parent = _parent._mock_new_parent
if new_name:
value._mock_new_parent = parent
value._mock_new_name = new_name
if name:
value._mock_parent = parent
value._mock_name = name
return True
# Internal class to identify if we wrapped an iterator object or not.
class _MockIter(object):
def __init__(self, obj):
self.obj = iter(obj)
def __next__(self):
return next(self.obj)
class Base(object):
_mock_return_value = DEFAULT
_mock_side_effect = None
def __init__(self, /, *args, **kwargs):
pass
class NonCallableMock(Base):
"""A non-callable version of `Mock`"""
# Store a mutex as a class attribute in order to protect concurrent access
# to mock attributes. Using a class attribute allows all NonCallableMock
# instances to share the mutex for simplicity.
#
# See https://github.com/python/cpython/issues/98624 for why this is
# necessary.
_lock = RLock()
def __new__(
cls, spec=None, wraps=None, name=None, spec_set=None,
parent=None, _spec_state=None, _new_name='', _new_parent=None,
_spec_as_instance=False, _eat_self=None, unsafe=False, **kwargs
):
# every instance has its own class
# so we can create magic methods on the
# class without stomping on other mocks
bases = (cls,)
if not issubclass(cls, AsyncMockMixin):
# Check if spec is an async object or function
spec_arg = spec_set or spec
if spec_arg is not None and _is_async_obj(spec_arg):
bases = (AsyncMockMixin, cls)
new = type(cls.__name__, bases, {'__doc__': cls.__doc__})
instance = _safe_super(NonCallableMock, cls).__new__(new)
return instance
def __init__(
self, spec=None, wraps=None, name=None, spec_set=None,
parent=None, _spec_state=None, _new_name='', _new_parent=None,
_spec_as_instance=False, _eat_self=None, unsafe=False, **kwargs
):
if _new_parent is None:
_new_parent = parent
__dict__ = self.__dict__
__dict__['_mock_parent'] = parent
__dict__['_mock_name'] = name
__dict__['_mock_new_name'] = _new_name
__dict__['_mock_new_parent'] = _new_parent
__dict__['_mock_sealed'] = False
if spec_set is not None:
spec = spec_set
spec_set = True
if _eat_self is None:
_eat_self = parent is not None
self._mock_add_spec(spec, spec_set, _spec_as_instance, _eat_self)
__dict__['_mock_children'] = {}
__dict__['_mock_wraps'] = wraps
__dict__['_mock_delegate'] = None
__dict__['_mock_called'] = False
__dict__['_mock_call_args'] = None
__dict__['_mock_call_count'] = 0
__dict__['_mock_call_args_list'] = _CallList()
__dict__['_mock_mock_calls'] = _CallList()
__dict__['method_calls'] = _CallList()
__dict__['_mock_unsafe'] = unsafe
if kwargs:
self.configure_mock(**kwargs)
_safe_super(NonCallableMock, self).__init__(
spec, wraps, name, spec_set, parent,
_spec_state
)
def attach_mock(self, mock, attribute):
"""
Attach a mock as an attribute of this one, replacing its name and
parent. Calls to the attached mock will be recorded in the
`method_calls` and `mock_calls` attributes of this one."""
inner_mock = _extract_mock(mock)
inner_mock._mock_parent = None
inner_mock._mock_new_parent = None
inner_mock._mock_name = ''
inner_mock._mock_new_name = None
setattr(self, attribute, mock)
def mock_add_spec(self, spec, spec_set=False):
"""Add a spec to a mock. `spec` can either be an object or a
list of strings. Only attributes on the `spec` can be fetched as
attributes from the mock.
If `spec_set` is True then only attributes on the spec can be set."""
self._mock_add_spec(spec, spec_set)
def _mock_add_spec(self, spec, spec_set, _spec_as_instance=False,
_eat_self=False):
if _is_instance_mock(spec):
raise InvalidSpecError(f'Cannot spec a Mock object. [object={spec!r}]')
_spec_class = None
_spec_signature = None
_spec_asyncs = []
if spec is not None and not _is_list(spec):
if isinstance(spec, type):
_spec_class = spec
else:
_spec_class = type(spec)
res = _get_signature_object(spec,
_spec_as_instance, _eat_self)
_spec_signature = res and res[1]
spec_list = dir(spec)
for attr in spec_list:
static_attr = inspect.getattr_static(spec, attr, None)
unwrapped_attr = static_attr
try:
unwrapped_attr = inspect.unwrap(unwrapped_attr)
except ValueError:
pass
if iscoroutinefunction(unwrapped_attr):
_spec_asyncs.append(attr)
spec = spec_list
__dict__ = self.__dict__
__dict__['_spec_class'] = _spec_class
__dict__['_spec_set'] = spec_set
__dict__['_spec_signature'] = _spec_signature
__dict__['_mock_methods'] = spec
__dict__['_spec_asyncs'] = _spec_asyncs
def _mock_extend_spec_methods(self, spec_methods):
methods = self.__dict__.get('_mock_methods') or []
methods.extend(spec_methods)
self.__dict__['_mock_methods'] = methods
def __get_return_value(self):
ret = self._mock_return_value
if self._mock_delegate is not None:
ret = self._mock_delegate.return_value
if ret is DEFAULT and self._mock_wraps is None:
ret = self._get_child_mock(
_new_parent=self, _new_name='()'
)
self.return_value = ret
return ret
def __set_return_value(self, value):
if self._mock_delegate is not None:
self._mock_delegate.return_value = value
else:
self._mock_return_value = value
_check_and_set_parent(self, value, None, '()')
__return_value_doc = "The value to be returned when the mock is called."
return_value = property(__get_return_value, __set_return_value,
__return_value_doc)
@property
def __class__(self):
if self._spec_class is None:
return type(self)
return self._spec_class
called = _delegating_property('called')
call_count = _delegating_property('call_count')
call_args = _delegating_property('call_args')
call_args_list = _delegating_property('call_args_list')
mock_calls = _delegating_property('mock_calls')
def __get_side_effect(self):
delegated = self._mock_delegate
if delegated is None:
return self._mock_side_effect
sf = delegated.side_effect
if (sf is not None and not callable(sf)
and not isinstance(sf, _MockIter) and not _is_exception(sf)):
sf = _MockIter(sf)
delegated.side_effect = sf
return sf
def __set_side_effect(self, value):
value = _try_iter(value)
delegated = self._mock_delegate
if delegated is None:
self._mock_side_effect = value
else:
delegated.side_effect = value
side_effect = property(__get_side_effect, __set_side_effect)
def reset_mock(self, visited=None, *,
return_value: bool = False,
side_effect: bool = False):
"Restore the mock object to its initial state."
if visited is None:
visited = []
if id(self) in visited:
return
visited.append(id(self))
self.called = False
self.call_args = None
self.call_count = 0
self.mock_calls = _CallList()
self.call_args_list = _CallList()
self.method_calls = _CallList()
if return_value:
self._mock_return_value = DEFAULT
if side_effect:
self._mock_side_effect = None
for child in self._mock_children.values():
if isinstance(child, _SpecState) or child is _deleted:
continue
child.reset_mock(visited, return_value=return_value, side_effect=side_effect)
ret = self._mock_return_value
if _is_instance_mock(ret) and ret is not self:
ret.reset_mock(visited)
def configure_mock(self, /, **kwargs):
"""Set attributes on the mock through keyword arguments.
Attributes plus return values and side effects can be set on child
mocks using standard dot notation and unpacking a dictionary in the
method call:
>>> attrs = {'method.return_value': 3, 'other.side_effect': KeyError}
>>> mock.configure_mock(**attrs)"""
for arg, val in sorted(kwargs.items(),
# we sort on the number of dots so that
# attributes are set before we set attributes on
# attributes
key=lambda entry: entry[0].count('.')):
args = arg.split('.')
final = args.pop()
obj = self
for entry in args:
obj = getattr(obj, entry)
setattr(obj, final, val)
def __getattr__(self, name):
if name in {'_mock_methods', '_mock_unsafe'}:
raise AttributeError(name)
elif self._mock_methods is not None:
if name not in self._mock_methods or name in _all_magics:
raise AttributeError("Mock object has no attribute %r" % name)
elif _is_magic(name):
raise AttributeError(name)
if not self._mock_unsafe and (not self._mock_methods or name not in self._mock_methods):
if name.startswith(('assert', 'assret', 'asert', 'aseert', 'assrt')) or name in _ATTRIB_DENY_LIST:
raise AttributeError(
f"{name!r} is not a valid assertion. Use a spec "
f"for the mock if {name!r} is meant to be an attribute")
with NonCallableMock._lock:
result = self._mock_children.get(name)
if result is _deleted:
raise AttributeError(name)
elif result is None:
wraps = None
if self._mock_wraps is not None:
# XXXX should we get the attribute without triggering code
# execution?
wraps = getattr(self._mock_wraps, name)
result = self._get_child_mock(
parent=self, name=name, wraps=wraps, _new_name=name,
_new_parent=self
)
self._mock_children[name] = result
elif isinstance(result, _SpecState):
try:
result = create_autospec(
result.spec, result.spec_set, result.instance,
result.parent, result.name
)
except InvalidSpecError:
target_name = self.__dict__['_mock_name'] or self
raise InvalidSpecError(
f'Cannot autospec attr {name!r} from target '
f'{target_name!r} as it has already been mocked out. '
f'[target={self!r}, attr={result.spec!r}]')
self._mock_children[name] = result
return result
def _extract_mock_name(self):
_name_list = [self._mock_new_name]
_parent = self._mock_new_parent
last = self
dot = '.'
if _name_list == ['()']:
dot = ''
while _parent is not None:
last = _parent
_name_list.append(_parent._mock_new_name + dot)
dot = '.'
if _parent._mock_new_name == '()':
dot = ''
_parent = _parent._mock_new_parent
_name_list = list(reversed(_name_list))
_first = last._mock_name or 'mock'
if len(_name_list) > 1:
if _name_list[1] not in ('()', '().'):
_first += '.'
_name_list[0] = _first
return ''.join(_name_list)
def __repr__(self):
name = self._extract_mock_name()
name_string = ''
if name not in ('mock', 'mock.'):
name_string = ' name=%r' % name
spec_string = ''
if self._spec_class is not None:
spec_string = ' spec=%r'
if self._spec_set:
spec_string = ' spec_set=%r'
spec_string = spec_string % self._spec_class.__name__
return "<%s%s%s id='%s'>" % (
type(self).__name__,
name_string,
spec_string,
id(self)
)
def __dir__(self):
"""Filter the output of `dir(mock)` to only useful members."""
if not FILTER_DIR:
return object.__dir__(self)
extras = self._mock_methods or []
from_type = dir(type(self))
from_dict = list(self.__dict__)
from_child_mocks = [
m_name for m_name, m_value in self._mock_children.items()
if m_value is not _deleted]
from_type = [e for e in from_type if not e.startswith('_')]
from_dict = [e for e in from_dict if not e.startswith('_') or
_is_magic(e)]
return sorted(set(extras + from_type + from_dict + from_child_mocks))
def __setattr__(self, name, value):
if name in _allowed_names:
# property setters go through here
return object.__setattr__(self, name, value)
elif (self._spec_set and self._mock_methods is not None and
name not in self._mock_methods and
name not in self.__dict__):
raise AttributeError("Mock object has no attribute '%s'" % name)
elif name in _unsupported_magics:
msg = 'Attempting to set unsupported magic method %r.' % name
raise AttributeError(msg)
elif name in _all_magics:
if self._mock_methods is not None and name not in self._mock_methods:
raise AttributeError("Mock object has no attribute '%s'" % name)
if not _is_instance_mock(value):
setattr(type(self), name, _get_method(name, value))
original = value
value = lambda *args, **kw: original(self, *args, **kw)
else:
# only set _new_name and not name so that mock_calls is tracked
# but not method calls
_check_and_set_parent(self, value, None, name)
setattr(type(self), name, value)
self._mock_children[name] = value
elif name == '__class__':
self._spec_class = value
return
else:
if _check_and_set_parent(self, value, name, name):
self._mock_children[name] = value
if self._mock_sealed and not hasattr(self, name):
mock_name = f'{self._extract_mock_name()}.{name}'
raise AttributeError(f'Cannot set {mock_name}')
if isinstance(value, PropertyMock):
self.__dict__[name] = value
return
return object.__setattr__(self, name, value)
def __delattr__(self, name):
if name in _all_magics and name in type(self).__dict__:
delattr(type(self), name)
if name not in self.__dict__:
# for magic methods that are still MagicProxy objects and
# not set on the instance itself
return
obj = self._mock_children.get(name, _missing)
if name in self.__dict__:
_safe_super(NonCallableMock, self).__delattr__(name)
elif obj is _deleted:
raise AttributeError(name)
if obj is not _missing:
del self._mock_children[name]
self._mock_children[name] = _deleted
def _format_mock_call_signature(self, args, kwargs):
name = self._mock_name or 'mock'
return _format_call_signature(name, args, kwargs)
def _format_mock_failure_message(self, args, kwargs, action='call'):
message = 'expected %s not found.\nExpected: %s\n Actual: %s'
expected_string = self._format_mock_call_signature(args, kwargs)
call_args = self.call_args
actual_string = self._format_mock_call_signature(*call_args)
return message % (action, expected_string, actual_string)
def _get_call_signature_from_name(self, name):
"""
* If call objects are asserted against a method/function like obj.meth1
then there could be no name for the call object to lookup. Hence just
return the spec_signature of the method/function being asserted against.
* If the name is not empty then remove () and split by '.' to get
list of names to iterate through the children until a potential
match is found. A child mock is created only during attribute access
so if we get a _SpecState then no attributes of the spec were accessed
and can be safely exited.
"""
if not name:
return self._spec_signature
sig = None
names = name.replace('()', '').split('.')
children = self._mock_children
for name in names:
child = children.get(name)
if child is None or isinstance(child, _SpecState):
break
else:
# If an autospecced object is attached using attach_mock the
# child would be a function with mock object as attribute from
# which signature has to be derived.
child = _extract_mock(child)
children = child._mock_children
sig = child._spec_signature
return sig
def _call_matcher(self, _call):
"""
Given a call (or simply an (args, kwargs) tuple), return a
comparison key suitable for matching with other calls.
This is a best effort method which relies on the spec's signature,
if available, or falls back on the arguments themselves.
"""
if isinstance(_call, tuple) and len(_call) > 2:
sig = self._get_call_signature_from_name(_call[0])
else:
sig = self._spec_signature
if sig is not None:
if len(_call) == 2:
name = ''
args, kwargs = _call
else:
name, args, kwargs = _call
try:
bound_call = sig.bind(*args, **kwargs)
return call(name, bound_call.args, bound_call.kwargs)
except TypeError as e:
return e.with_traceback(None)
else:
return _call
def assert_not_called(self):
"""assert that the mock was never called.
"""
if self.call_count != 0:
msg = ("Expected '%s' to not have been called. Called %s times.%s"
% (self._mock_name or 'mock',
self.call_count,
self._calls_repr()))
raise AssertionError(msg)
def assert_called(self):
"""assert that the mock was called at least once
"""
if self.call_count == 0:
msg = ("Expected '%s' to have been called." %
(self._mock_name or 'mock'))
raise AssertionError(msg)
def assert_called_once(self):
"""assert that the mock was called only once.
"""
if not self.call_count == 1:
msg = ("Expected '%s' to have been called once. Called %s times.%s"
% (self._mock_name or 'mock',
self.call_count,
self._calls_repr()))
raise AssertionError(msg)
def assert_called_with(self, /, *args, **kwargs):
"""assert that the last call was made with the specified arguments.
Raises an AssertionError if the args and keyword args passed in are
different to the last call to the mock."""
if self.call_args is None:
expected = self._format_mock_call_signature(args, kwargs)
actual = 'not called.'
error_message = ('expected call not found.\nExpected: %s\n Actual: %s'
% (expected, actual))
raise AssertionError(error_message)
def _error_message():
msg = self._format_mock_failure_message(args, kwargs)
return msg
expected = self._call_matcher(_Call((args, kwargs), two=True))
actual = self._call_matcher(self.call_args)
if actual != expected:
cause = expected if isinstance(expected, Exception) else None
raise AssertionError(_error_message()) from cause
def assert_called_once_with(self, /, *args, **kwargs):
"""assert that the mock was called exactly once and that call was
with the specified arguments."""
if not self.call_count == 1:
msg = ("Expected '%s' to be called once. Called %s times.%s"
% (self._mock_name or 'mock',
self.call_count,
self._calls_repr()))
raise AssertionError(msg)
return self.assert_called_with(*args, **kwargs)
def assert_has_calls(self, calls, any_order=False):