Merge ~bladernr/checkbox-support/+git/packaging:remove-mock-patch into ~checkbox-dev/checkbox-support/+git/packaging:master

[Jeff Lane ]

Removes the unvendorize patch that affected checkbox_support/vendors/mock.py because that file no longer exists, and the patch is triggering build failures.

[Maciej Kisielewski (kissiel)]

I'm sorry for missing that .deb build dependency.
The patch makes sense.

review: Approve

diff --git a/debian/patches/unvendorize b/debian/patches/unvendorize
deleted file mode 100644
index 79db9e6..0000000
--- a/debian/patches/unvendorize
+++ /dev/null
@@ -1,2419 +0,0 @@
-From 252d8e6529b9cdbb9d64db4b91517b45c89f1a49 Mon Sep 17 00:00:00 2001
-From: Zygmunt Krynicki <[e-mail]>
-Date: Thu, 8 Oct 2015 08:38:43 -0700
-Subject: Remove vendorized modules
-
-This patch replaces checkbox_support.vendor.mock with equivalent imports from
-the standard python3.3 library. Upstream will stop shipping those vendorized
-modules when support for python3.2 is no longer required.
-Upstream: not-needed
-Last-Update: 2014-04-07
-
-Patch-Name: unvendorize
----
- checkbox_support/vendor/mock.py | 2398 +--------------------------------------
- 1 file changed, 29 insertions(+), 2369 deletions(-)
-
-diff --git a/checkbox_support/vendor/mock.py b/checkbox_support/vendor/mock.py
-index ca77df6..bd867c5 100644
---- a/checkbox_support/vendor/mock.py
-+++ b/checkbox_support/vendor/mock.py
-@@ -1,2369 +1,29 @@
--# mock.py
--# Test tools for mocking and patching.
--# Copyright (C) 2007-2012 Michael Foord & the mock team
--# E-mail: fuzzyman AT voidspace DOT org DOT uk
--
--# mock 1.0
--# http://www.voidspace.org.uk/python/mock/
--
--# Released subject to the BSD License
--# Please see http://www.voidspace.org.uk/python/license.shtml
--
--# Scripts maintained at http://www.voidspace.org.uk/python/index.shtml
--# Comments, suggestions and bug reports welcome.
--
--
--__all__ = (
--    'Mock',
--    'MagicMock',
--    'patch',
--    'sentinel',
--    'DEFAULT',
--    'ANY',
--    'call',
--    'create_autospec',
--    'FILTER_DIR',
--    'NonCallableMock',
--    'NonCallableMagicMock',
--    'mock_open',
--    'PropertyMock',
--)
--
--
--__version__ = '1.0.1'
--
--
--import pprint
--import sys
--
--try:
--    import inspect
--except ImportError:
--    # for alternative platforms that
--    # may not have inspect
--    inspect = None
--
--try:
--    from functools import wraps as original_wraps
--except ImportError:
--    # Python 2.4 compatibility
--    def wraps(original):
--        def inner(f):
--            f.__name__ = original.__name__
--            f.__doc__ = original.__doc__
--            f.__module__ = original.__module__
--            f.__wrapped__ = original
--            return f
--        return inner
--else:
--    if sys.version_info[:2] >= (3, 3):
--        wraps = original_wraps
--    else:
--        def wraps(func):
--            def inner(f):
--                f = original_wraps(func)(f)
--                f.__wrapped__ = func
--                return f
--            return inner
--
--try:
--    unicode
--except NameError:
--    # Python 3
--    basestring = unicode = str
--
--try:
--    long
--except NameError:
--    # Python 3
--    long = int
--
--try:
--    BaseException
--except NameError:
--    # Python 2.4 compatibility
--    BaseException = Exception
--
--try:
--    next
--except NameError:
--    def next(obj):
--        return obj.next()
--
--
--BaseExceptions = (BaseException,)
--if 'java' in sys.platform:
--    # jython
--    import java
--    BaseExceptions = (BaseException, java.lang.Throwable)
--
--try:
--    _isidentifier = str.isidentifier
--except AttributeError:
--    # Python 2.X
--    import keyword
--    import re
--    regex = re.compile(r'^[a-z_][a-z0-9_]*$', re.I)
--    def _isidentifier(string):
--        if string in keyword.kwlist:
--            return False
--        return regex.match(string)
--
--
--inPy3k = sys.version_info[0] == 3
--
--# Needed to work around Python 3 bug where use of "super" interferes with
--# defining __class__ as a descriptor
--_super = super
--
--self = 'im_self'
--builtin = '__builtin__'
--if inPy3k:
--    self = '__self__'
--    builtin = 'builtins'
--
--FILTER_DIR = True
--
--
--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, BaseExceptions) or
--        isinstance(obj, ClassTypes) and issubclass(obj, BaseExceptions)
--    )
--
--
--class _slotted(object):
--    __slots__ = ['a']
--
--
--DescriptorTypes = (
--    type(_slotted.a),
--    property,
--)
--
--
--def _getsignature(func, skipfirst, instance=False):
--    if inspect is None:
--        raise ImportError('inspect module not available')
--
--    if isinstance(func, ClassTypes) and not instance:
--        try:
--            func = func.__init__
--        except AttributeError:
--            return
--        skipfirst = True
--    elif not isinstance(func, FunctionTypes):
--        # for classes where instance is True we end up here too
--        try:
--            func = func.__call__
--        except AttributeError:
--            return
--
--    if inPy3k:
--        try:
--            argspec = inspect.getfullargspec(func)
--        except TypeError:
--            # C function / method, possibly inherited object().__init__
--            return
--        regargs, varargs, varkw, defaults, kwonly, kwonlydef, ann = argspec
--    else:
--        try:
--            regargs, varargs, varkwargs, defaults = inspect.getargspec(func)
--        except TypeError:
--            # C function / method, possibly inherited object().__init__
--            return
--
--    # instance methods and classmethods need to lose the self argument
--    if getattr(func, self, None) is not None:
--        regargs = regargs[1:]
--    if skipfirst:
--        # this condition and the above one are never both True - why?
--        regargs = regargs[1:]
--
--    if inPy3k:
--        signature = inspect.formatargspec(
--            regargs, varargs, varkw, defaults,
--            kwonly, kwonlydef, ann, formatvalue=lambda value: "")
--    else:
--        signature = inspect.formatargspec(
--            regargs, varargs, varkwargs, defaults,
--            formatvalue=lambda value: "")
--    return signature[1:-1], func
--
--
--def _check_signature(func, mock, skipfirst, instance=False):
--    if not _callable(func):
--        return
--
--    result = _getsignature(func, skipfirst, instance)
--    if result is None:
--        return
--    signature, func = result
--
--    # can't use self because "self" is common as an argument name
--    # unfortunately even not in the first place
--    src = "lambda _mock_self, %s: None" % signature
--    checksig = eval(src, {})
--    _copy_func_details(func, checksig)
--    type(mock)._mock_check_sig = checksig
--
--
--def _copy_func_details(func, funcopy):
--    funcopy.__name__ = func.__name__
--    funcopy.__doc__ = func.__doc__
--    #funcopy.__dict__.update(func.__dict__)
--    funcopy.__module__ = func.__module__
--    if not inPy3k:
--        funcopy.func_defaults = func.func_defaults
--        return
--    funcopy.__defaults__ = func.__defaults__
--    funcopy.__kwdefaults__ = func.__kwdefaults__
--
--
--def _callable(obj):
--    if isinstance(obj, ClassTypes):
--        return True
--    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, ClassTypes):
--        # already an instance
--        return getattr(obj, '__call__', None) is not None
--
--    klass = obj
--    # uses __bases__ instead of __mro__ so that we work with old style classes
--    if klass.__dict__.get('__call__') is not None:
--        return True
--
--    for base in klass.__bases__:
--        if _instance_callable(base):
--            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.
--    if not _callable(original):
--        return
--
--    skipfirst = isinstance(original, ClassTypes)
--    result = _getsignature(original, skipfirst, instance)
--    if result is None:
--        # was a C function (e.g. object().__init__ ) that can't be mocked
--        return
--
--    signature, func = result
--
--    src = "lambda %s: None" % signature
--    checksig = eval(src, {})
--    _copy_func_details(func, checksig)
--
--    name = original.__name__
--    if not _isidentifier(name):
--        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)
--    return funcopy
--
--
--def _setup_func(funcopy, mock):
--    funcopy.mock = mock
--
--    # can't use isinstance with mocks
--    if not _is_instance_mock(mock):
--        return
--
--    def assert_called_with(*args, **kwargs):
--        return mock.assert_called_with(*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
--
--    mock._mock_delegate = funcopy
--
--
--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
--
--
--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(mock) raises an exception
--            raise AttributeError
--        return self._sentinels.setdefault(name, _SentinelObject(name))
--
--
--sentinel = _Sentinel()
--
--DEFAULT = sentinel.DEFAULT
--_missing = sentinel.MISSING
--_deleted = sentinel.DELETED
--
--
--class OldStyleClass:
--    pass
--ClassType = type(OldStyleClass)
--
--
--def _copy(value):
--    if type(value) in (dict, list, tuple, set):
--        return type(value)(value)
--    return value
--
--
--ClassTypes = (type,)
--if not inPy3k:
--    ClassTypes = (type, ClassType)
--
--_allowed_names = set(
--    [
--        '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):
--    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
--
--
--
--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`"""
--
--    def __new__(cls, *args, **kw):
--        # every instance has its own class
--        # so we can create magic methods on the
--        # class without stomping on other mocks
--        new = type(cls.__name__, (cls,), {'__doc__': cls.__doc__})
--        instance = object.__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,
--            **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
--
--        if spec_set is not None:
--            spec = spec_set
--            spec_set = True
--
--        self._mock_add_spec(spec, spec_set)
--
--        __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()
--
--        if kwargs:
--            self.configure_mock(**kwargs)
--
--        _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."""
--        mock._mock_parent = None
--        mock._mock_new_parent = None
--        mock._mock_name = ''
--        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_class = None
--
--        if spec is not None and not _is_list(spec):
--            if isinstance(spec, ClassTypes):
--                _spec_class = spec
--            else:
--                _spec_class = _get_class(spec)
--
--            spec = dir(spec)
--
--        __dict__ = self.__dict__
--        __dict__['_spec_class'] = _spec_class
--        __dict__['_spec_set'] = spec_set
--        __dict__['_mock_methods'] = spec
--
--
--    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:
--            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):
--        sig = self._mock_delegate
--        if sig is None:
--            return self._mock_side_effect
--        return sig.side_effect
--
--    def __set_side_effect(self, value):
--        value = _try_iter(value)
--        sig = self._mock_delegate
--        if sig is None:
--            self._mock_side_effect = value
--        else:
--            sig.side_effect = value
--
--    side_effect = property(__get_side_effect, __set_side_effect)
--
--
--    def reset_mock(self):
--        "Restore the mock object to its initial state."
--        self.called = False
--        self.call_args = None
--        self.call_count = 0
--        self.mock_calls = _CallList()
--        self.call_args_list = _CallList()
--        self.method_calls = _CallList()
--
--        for child in self._mock_children.values():
--            if isinstance(child, _SpecState):
--                continue
--            child.reset_mock()
--
--        ret = self._mock_return_value
--        if _is_instance_mock(ret) and ret is not self:
--            ret.reset_mock()
--
--
--    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 == '_mock_methods':
--            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 name.startswith(('assert', 'assret')):
--            raise AttributeError(name)
--
--        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):
--            result = create_autospec(
--                result.spec, result.spec_set, result.instance,
--                result.parent, result.name
--            )
--            self._mock_children[name]  = result
--
--        return result
--
--
--    def __repr__(self):
--        _name_list = [self._mock_new_name]
--        _parent = self._mock_new_parent
--        last = self
--
--        dot = '.'
--        if _name_list == ['()']:
--            dot = ''
--        seen = set()
--        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
--
--            # use ids here so as not to call __hash__ on the mocks
--            if id(_parent) in seen:
--                break
--            seen.add(id(_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
--        name = ''.join(_name_list)
--
--        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.
--        XXXX
--        """
--        extras = self._mock_methods or []
--        from_type = dir(type(self))
--        from_dict = list(self.__dict__)
--
--        if FILTER_DIR:
--            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 +
--                          list(self._mock_children)))
--
--
--    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
--        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
--
--        if name in self.__dict__:
--            object.__delattr__(self, name)
--
--        obj = self._mock_children.get(name, _missing)
--        if 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):
--        message = 'Expected call: %s\nActual call: %s'
--        expected_string = self._format_mock_call_signature(args, kwargs)
--        call_args = self.call_args
--        if len(call_args) == 3:
--            call_args = call_args[1:]
--        actual_string = self._format_mock_call_signature(*call_args)
--        return message % (expected_string, actual_string)
--
--
--    def assert_called_with(_mock_self, *args, **kwargs):
--        """assert that the mock was called with the specified arguments.
--
--        Raises an AssertionError if the args and keyword args passed in are
--        different to the last call to the mock."""
--        self = _mock_self
--        if self.call_args is None:
--            expected = self._format_mock_call_signature(args, kwargs)
--            raise AssertionError('Expected call: %s\nNot called' % (expected,))
--
--        if self.call_args != (args, kwargs):
--            msg = self._format_mock_failure_message(args, kwargs)
--            raise AssertionError(msg)
--
--
--    def assert_called_once_with(_mock_self, *args, **kwargs):
--        """assert that the mock was called exactly once and with the specified
--        arguments."""
--        self = _mock_self
--        if not self.call_count == 1:
--            msg = ("Expected to be called once. Called %s times." %
--                   self.call_count)
--            raise AssertionError(msg)
--        return self.assert_called_with(*args, **kwargs)
--
--
--    def assert_has_calls(self, calls, any_order=False):
--        """assert the mock has been called with the specified calls.
--        The `mock_calls` list is checked for the calls.
--
--        If `any_order` is False (the default) then the calls must be
--        sequential. There can be extra calls before or after the
--        specified calls.
--
--        If `any_order` is True then the calls can be in any order, but
--        they must all appear in `mock_calls`."""
--        if not any_order:
--            if calls not in self.mock_calls:
--                raise AssertionError(
--                    'Calls not found.\nExpected: %r\n'
--                    'Actual: %r' % (calls, self.mock_calls)
--                )
--            return
--
--        all_calls = list(self.mock_calls)
--
--        not_found = []
--        for kall in calls:
--            try:
--                all_calls.remove(kall)
--            except ValueError:
--                not_found.append(kall)
--        if not_found:
--            raise AssertionError(
--                '%r not all found in call list' % (tuple(not_found),)
--            )
--
--
--    def assert_any_call(self, *args, **kwargs):
--        """assert the mock has been called with the specified arguments.
--
--        The assert passes if the mock has *ever* been called, unlike
--        `assert_called_with` and `assert_called_once_with` that only pass if
--        the call is the most recent one."""
--        kall = call(*args, **kwargs)
--        if kall not in self.call_args_list:
--            expected_string = self._format_mock_call_signature(args, kwargs)
--            raise AssertionError(
--                '%s call not found' % expected_string
--            )
--
--
--    def _get_child_mock(self, **kw):
--        """Create the child mocks for attributes and return value.
--        By default child mocks will be the same type as the parent.
--        Subclasses of Mock may want to override this to customize the way
--        child mocks are made.
--
--        For non-callable mocks the callable variant will be used (rather than
--        any custom subclass)."""
--        _type = type(self)
--        if not issubclass(_type, CallableMixin):
--            if issubclass(_type, NonCallableMagicMock):
--                klass = MagicMock
--            elif issubclass(_type, NonCallableMock) :
--                klass = Mock
--        else:
--            klass = _type.__mro__[1]
--        return klass(**kw)
--
--
--
--def _try_iter(obj):
--    if obj is None:
--        return obj
--    if _is_exception(obj):
--        return obj
--    if _callable(obj):
--        return obj
--    try:
--        return iter(obj)
--    except TypeError:
--        # XXXX backwards compatibility
--        # but this will blow up on first call - so maybe we should fail early?
--        return obj
--
--
--
--class CallableMixin(Base):
--
--    def __init__(self, spec=None, side_effect=None, return_value=DEFAULT,
--                 wraps=None, name=None, spec_set=None, parent=None,
--                 _spec_state=None, _new_name='', _new_parent=None, **kwargs):
--        self.__dict__['_mock_return_value'] = return_value
--
--        _super(CallableMixin, self).__init__(
--            spec, wraps, name, spec_set, parent,
--            _spec_state, _new_name, _new_parent, **kwargs
--        )
--
--        self.side_effect = side_effect
--
--
--    def _mock_check_sig(self, *args, **kwargs):
--        # stub method that can be replaced with one with a specific signature
--        pass
--
--
--    def __call__(_mock_self, *args, **kwargs):
--        # can't use self in-case a function / method we are mocking uses self
--        # in the signature
--        _mock_self._mock_check_sig(*args, **kwargs)
--        return _mock_self._mock_call(*args, **kwargs)
--
--
--    def _mock_call(_mock_self, *args, **kwargs):
--        self = _mock_self
--        self.called = True
--        self.call_count += 1
--        self.call_args = _Call((args, kwargs), two=True)
--        self.call_args_list.append(_Call((args, kwargs), two=True))
--
--        _new_name = self._mock_new_name
--        _new_parent = self._mock_new_parent
--        self.mock_calls.append(_Call(('', args, kwargs)))
--
--        seen = set()
--        skip_next_dot = _new_name == '()'
--        do_method_calls = self._mock_parent is not None
--        name = self._mock_name
--        while _new_parent is not None:
--            this_mock_call = _Call((_new_name, args, kwargs))
--            if _new_parent._mock_new_name:
--                dot = '.'
--                if skip_next_dot:
--                    dot = ''
--
--                skip_next_dot = False
--                if _new_parent._mock_new_name == '()':
--                    skip_next_dot = True
--
--                _new_name = _new_parent._mock_new_name + dot + _new_name
--
--            if do_method_calls:
--                if _new_name == name:
--                    this_method_call = this_mock_call
--                else:
--                    this_method_call = _Call((name, args, kwargs))
--                _new_parent.method_calls.append(this_method_call)
--
--                do_method_calls = _new_parent._mock_parent is not None
--                if do_method_calls:
--                    name = _new_parent._mock_name + '.' + name
--
--            _new_parent.mock_calls.append(this_mock_call)
--            _new_parent = _new_parent._mock_new_parent
--
--            # use ids here so as not to call __hash__ on the mocks
--            _new_parent_id = id(_new_parent)
--            if _new_parent_id in seen:
--                break
--            seen.add(_new_parent_id)
--
--        ret_val = DEFAULT
--        effect = self.side_effect
--        if effect is not None:
--            if _is_exception(effect):
--                raise effect
--
--            if not _callable(effect):
--                result = next(effect)
--                if _is_exception(result):
--                    raise result
--                return result
--
--            ret_val = effect(*args, **kwargs)
--            if ret_val is DEFAULT:
--                ret_val = self.return_value
--
--        if (self._mock_wraps is not None and
--             self._mock_return_value is DEFAULT):
--            return self._mock_wraps(*args, **kwargs)
--        if ret_val is DEFAULT:
--            ret_val = self.return_value
--        return ret_val
--
--
--
--class Mock(CallableMixin, NonCallableMock):
--    """
--    Create a new `Mock` object. `Mock` takes several optional arguments
--    that specify the behaviour of the Mock object:
--
--    * `spec`: This can be either a list of strings or an existing object (a
--      class or instance) that acts as the specification for the mock object. If
--      you pass in an object then a list of strings is formed by calling dir on
--      the object (excluding unsupported magic attributes and methods). Accessing
--      any attribute not in this list will raise an `AttributeError`.
--
--      If `spec` is an object (rather than a list of strings) then
--      `mock.__class__` returns the class of the spec object. This allows mocks
--      to pass `isinstance` tests.
--
--    * `spec_set`: A stricter variant of `spec`. If used, attempting to *set*
--      or get an attribute on the mock that isn't on the object passed as
--      `spec_set` will raise an `AttributeError`.
--
--    * `side_effect`: A function to be called whenever the Mock is called. See
--      the `side_effect` attribute. Useful for raising exceptions or
--      dynamically changing return values. The function is called with the same
--      arguments as the mock, and unless it returns `DEFAULT`, the return
--      value of this function is used as the return value.
--
--      Alternatively `side_effect` can be an exception class or instance. In
--      this case the exception will be raised when the mock is called.
--
--      If `side_effect` is an iterable then each call to the mock will return
--      the next value from the iterable. If any of the members of the iterable
--      are exceptions they will be raised instead of returned.
--
--    * `return_value`: The value returned when the mock is called. By default
--      this is a new Mock (created on first access). See the
--      `return_value` attribute.
--
--    * `wraps`: Item for the mock object to wrap. If `wraps` is not None then
--      calling the Mock will pass the call through to the wrapped object
--      (returning the real result). Attribute access on the mock will return a
--      Mock object that wraps the corresponding attribute of the wrapped object
--      (so attempting to access an attribute that doesn't exist will raise an
--      `AttributeError`).
--
--      If the mock has an explicit `return_value` set then calls are not passed
--      to the wrapped object and the `return_value` is returned instead.
--
--    * `name`: If the mock has a name then it will be used in the repr of the
--      mock. This can be useful for debugging. The name is propagated to child
--      mocks.
--
--    Mocks can also be called with arbitrary keyword arguments. These will be
--    used to set attributes on the mock after it is created.
--    """
--
--
--
--def _dot_lookup(thing, comp, import_path):
--    try:
--        return getattr(thing, comp)
--    except AttributeError:
--        __import__(import_path)
--        return getattr(thing, comp)
--
--
--def _importer(target):
--    components = target.split('.')
--    import_path = components.pop(0)
--    thing = __import__(import_path)
--
--    for comp in components:
--        import_path += ".%s" % comp
--        thing = _dot_lookup(thing, comp, import_path)
--    return thing
--
--
--def _is_started(patcher):
--    # XXXX horrible
--    return hasattr(patcher, 'is_local')
--
--
--class _patch(object):
--
--    attribute_name = None
--    _active_patches = set()
--
--    def __init__(
--            self, getter, attribute, new, spec, create,
--            spec_set, autospec, new_callable, kwargs
--        ):
--        if new_callable is not None:
--            if new is not DEFAULT:
--                raise ValueError(
--                    "Cannot use 'new' and 'new_callable' together"
--                )
--            if autospec is not None:
--                raise ValueError(
--                    "Cannot use 'autospec' and 'new_callable' together"
--                )
--
--        self.getter = getter
--        self.attribute = attribute
--        self.new = new
--        self.new_callable = new_callable
--        self.spec = spec
--        self.create = create
--        self.has_local = False
--        self.spec_set = spec_set
--        self.autospec = autospec
--        self.kwargs = kwargs
--        self.additional_patchers = []
--
--
--    def copy(self):
--        patcher = _patch(
--            self.getter, self.attribute, self.new, self.spec,
--            self.create, self.spec_set,
--            self.autospec, self.new_callable, self.kwargs
--        )
--        patcher.attribute_name = self.attribute_name
--        patcher.additional_patchers = [
--            p.copy() for p in self.additional_patchers
--        ]
--        return patcher
--
--
--    def __call__(self, func):
--        if isinstance(func, ClassTypes):
--            return self.decorate_class(func)
--        return self.decorate_callable(func)
--
--
--    def decorate_class(self, klass):
--        for attr in dir(klass):
--            if not attr.startswith(patch.TEST_PREFIX):
--                continue
--
--            attr_value = getattr(klass, attr)
--            if not hasattr(attr_value, "__call__"):
--                continue
--
--            patcher = self.copy()
--            setattr(klass, attr, patcher(attr_value))
--        return klass
--
--
--    def decorate_callable(self, func):
--        if hasattr(func, 'patchings'):
--            func.patchings.append(self)
--            return func
--
--        @wraps(func)
--        def patched(*args, **keywargs):
--            # don't use a with here (backwards compatability with Python 2.4)
--            extra_args = []
--            entered_patchers = []
--
--            # can't use try...except...finally because of Python 2.4
--            # compatibility
--            exc_info = tuple()
--            try:
--                try:
--                    for patching in patched.patchings:
--                        arg = patching.__enter__()
--                        entered_patchers.append(patching)
--                        if patching.attribute_name is not None:
--                            keywargs.update(arg)
--                        elif patching.new is DEFAULT:
--                            extra_args.append(arg)
--
--                    args += tuple(extra_args)
--                    return func(*args, **keywargs)
--                except:
--                    if (patching not in entered_patchers and
--                        _is_started(patching)):
--                        # the patcher may have been started, but an exception
--                        # raised whilst entering one of its additional_patchers
--                        entered_patchers.append(patching)
--                    # Pass the exception to __exit__
--                    exc_info = sys.exc_info()
--                    # re-raise the exception
--                    raise
--            finally:
--                for patching in reversed(entered_patchers):
--                    patching.__exit__(*exc_info)
--
--        patched.patchings = [self]
--        if hasattr(func, 'func_code'):
--            # not in Python 3
--            patched.compat_co_firstlineno = getattr(
--                func, "compat_co_firstlineno",
--                func.func_code.co_firstlineno
--            )
--        return patched
--
--
--    def get_original(self):
--        target = self.getter()
--        name = self.attribute
--
--        original = DEFAULT
--        local = False
--
--        try:
--            original = target.__dict__[name]
--        except (AttributeError, KeyError):
--            original = getattr(target, name, DEFAULT)
--        else:
--            local = True
--
--        if not self.create and original is DEFAULT:
--            raise AttributeError(
--                "%s does not have the attribute %r" % (target, name)
--            )
--        return original, local
--
--
--    def __enter__(self):
--        """Perform the patch."""
--        new, spec, spec_set = self.new, self.spec, self.spec_set
--        autospec, kwargs = self.autospec, self.kwargs
--        new_callable = self.new_callable
--        self.target = self.getter()
--
--        # normalise False to None
--        if spec is False:
--            spec = None
--        if spec_set is False:
--            spec_set = None
--        if autospec is False:
--            autospec = None
--
--        if spec is not None and autospec is not None:
--            raise TypeError("Can't specify spec and autospec")
--        if ((spec is not None or autospec is not None) and
--            spec_set not in (True, None)):
--            raise TypeError("Can't provide explicit spec_set *and* spec or autospec")
--
--        original, local = self.get_original()
--
--        if new is DEFAULT and autospec is None:
--            inherit = False
--            if spec is True:
--                # set spec to the object we are replacing
--                spec = original
--                if spec_set is True:
--                    spec_set = original
--                    spec = None
--            elif spec is not None:
--                if spec_set is True:
--                    spec_set = spec
--                    spec = None
--            elif spec_set is True:
--                spec_set = original
--
--            if spec is not None or spec_set is not None:
--                if original is DEFAULT:
--                    raise TypeError("Can't use 'spec' with create=True")
--                if isinstance(original, ClassTypes):
--                    # If we're patching out a class and there is a spec
--                    inherit = True
--
--            Klass = MagicMock
--            _kwargs = {}
--            if new_callable is not None:
--                Klass = new_callable
--            elif spec is not None or spec_set is not None:
--                this_spec = spec
--                if spec_set is not None:
--                    this_spec = spec_set
--                if _is_list(this_spec):
--                    not_callable = '__call__' not in this_spec
--                else:
--                    not_callable = not _callable(this_spec)
--                if not_callable:
--                    Klass = NonCallableMagicMock
--
--            if spec is not None:
--                _kwargs['spec'] = spec
--            if spec_set is not None:
--                _kwargs['spec_set'] = spec_set
--
--            # add a name to mocks
--            if (isinstance(Klass, type) and
--                issubclass(Klass, NonCallableMock) and self.attribute):
--                _kwargs['name'] = self.attribute
--
--            _kwargs.update(kwargs)
--            new = Klass(**_kwargs)
--
--            if inherit and _is_instance_mock(new):
--                # we can only tell if the instance should be callable if the
--                # spec is not a list
--                this_spec = spec
--                if spec_set is not None:
--                    this_spec = spec_set
--                if (not _is_list(this_spec) and not
--                    _instance_callable(this_spec)):
--                    Klass = NonCallableMagicMock
--
--                _kwargs.pop('name')
--                new.return_value = Klass(_new_parent=new, _new_name='()',
--                                         **_kwargs)
--        elif autospec is not None:
--            # spec is ignored, new *must* be default, spec_set is treated
--            # as a boolean. Should we check spec is not None and that spec_set
--            # is a bool?
--            if new is not DEFAULT:
--                raise TypeError(
--                    "autospec creates the mock for you. Can't specify "
--                    "autospec and new."
--                )
--            if original is DEFAULT:
--                raise TypeError("Can't use 'autospec' with create=True")
--            spec_set = bool(spec_set)
--            if autospec is True:
--                autospec = original
--
--            new = create_autospec(autospec, spec_set=spec_set,
--                                  _name=self.attribute, **kwargs)
--        elif kwargs:
--            # can't set keyword args when we aren't creating the mock
--            # XXXX If new is a Mock we could call new.configure_mock(**kwargs)
--            raise TypeError("Can't pass kwargs to a mock we aren't creating")
--
--        new_attr = new
--
--        self.temp_original = original
--        self.is_local = local
--        setattr(self.target, self.attribute, new_attr)
--        if self.attribute_name is not None:
--            extra_args = {}
--            if self.new is DEFAULT:
--                extra_args[self.attribute_name] =  new
--            for patching in self.additional_patchers:
--                arg = patching.__enter__()
--                if patching.new is DEFAULT:
--                    extra_args.update(arg)
--            return extra_args
--
--        return new
--
--
--    def __exit__(self, *exc_info):
--        """Undo the patch."""
--        if not _is_started(self):
--            raise RuntimeError('stop called on unstarted patcher')
--
--        if self.is_local and self.temp_original is not DEFAULT:
--            setattr(self.target, self.attribute, self.temp_original)
--        else:
--            delattr(self.target, self.attribute)
--            if not self.create and not hasattr(self.target, self.attribute):
--                # needed for proxy objects like django settings
--                setattr(self.target, self.attribute, self.temp_original)
--
--        del self.temp_original
--        del self.is_local
--        del self.target
--        for patcher in reversed(self.additional_patchers):
--            if _is_started(patcher):
--                patcher.__exit__(*exc_info)
--
--
--    def start(self):
--        """Activate a patch, returning any created mock."""
--        result = self.__enter__()
--        self._active_patches.add(self)
--        return result
--
--
--    def stop(self):
--        """Stop an active patch."""
--        self._active_patches.discard(self)
--        return self.__exit__()
--
--
--
--def _get_target(target):
--    try:
--        target, attribute = target.rsplit('.', 1)
--    except (TypeError, ValueError):
--        raise TypeError("Need a valid target to patch. You supplied: %r" %
--                        (target,))
--    getter = lambda: _importer(target)
--    return getter, attribute
--
--
--def _patch_object(
--        target, attribute, new=DEFAULT, spec=None,
--        create=False, spec_set=None, autospec=None,
--        new_callable=None, **kwargs
--    ):
--    """
--    patch.object(target, attribute, new=DEFAULT, spec=None, create=False,
--                 spec_set=None, autospec=None, new_callable=None, **kwargs)
--
--    patch the named member (`attribute`) on an object (`target`) with a mock
--    object.
--
--    `patch.object` can be used as a decorator, class decorator or a context
--    manager. Arguments `new`, `spec`, `create`, `spec_set`,
--    `autospec` and `new_callable` have the same meaning as for `patch`. Like
--    `patch`, `patch.object` takes arbitrary keyword arguments for configuring
--    the mock object it creates.
--
--    When used as a class decorator `patch.object` honours `patch.TEST_PREFIX`
--    for choosing which methods to wrap.
--    """
--    getter = lambda: target
--    return _patch(
--        getter, attribute, new, spec, create,
--        spec_set, autospec, new_callable, kwargs
--    )
--
--
--def _patch_multiple(target, spec=None, create=False, spec_set=None,
--                    autospec=None, new_callable=None, **kwargs):
--    """Perform multiple patches in a single call. It takes the object to be
--    patched (either as an object or a string to fetch the object by importing)
--    and keyword arguments for the patches::
--
--        with patch.multiple(settings, FIRST_PATCH='one', SECOND_PATCH='two'):
--            ...
--
--    Use `DEFAULT` as the value if you want `patch.multiple` to create
--    mocks for you. In this case the created mocks are passed into a decorated
--    function by keyword, and a dictionary is returned when `patch.multiple` is
--    used as a context manager.
--
--    `patch.multiple` can be used as a decorator, class decorator or a context
--    manager. The arguments `spec`, `spec_set`, `create`,
--    `autospec` and `new_callable` have the same meaning as for `patch`. These
--    arguments will be applied to *all* patches done by `patch.multiple`.
--
--    When used as a class decorator `patch.multiple` honours `patch.TEST_PREFIX`
--    for choosing which methods to wrap.
--    """
--    if type(target) in (unicode, str):
--        getter = lambda: _importer(target)
--    else:
--        getter = lambda: target
--
--    if not kwargs:
--        raise ValueError(
--            'Must supply at least one keyword argument with patch.multiple'
--        )
--    # need to wrap in a list for python 3, where items is a view
--    items = list(kwargs.items())
--    attribute, new = items[0]
--    patcher = _patch(
--        getter, attribute, new, spec, create, spec_set,
--        autospec, new_callable, {}
--    )
--    patcher.attribute_name = attribute
--    for attribute, new in items[1:]:
--        this_patcher = _patch(
--            getter, attribute, new, spec, create, spec_set,
--            autospec, new_callable, {}
--        )
--        this_patcher.attribute_name = attribute
--        patcher.additional_patchers.append(this_patcher)
--    return patcher
--
--
--def patch(
--        target, new=DEFAULT, spec=None, create=False,
--        spec_set=None, autospec=None, new_callable=None, **kwargs
--    ):
--    """
--    `patch` acts as a function decorator, class decorator or a context
--    manager. Inside the body of the function or with statement, the `target`
--    is patched with a `new` object. When the function/with statement exits
--    the patch is undone.
--
--    If `new` is omitted, then the target is replaced with a
--    `MagicMock`. If `patch` is used as a decorator and `new` is
--    omitted, the created mock is passed in as an extra argument to the
--    decorated function. If `patch` is used as a context manager the created
--    mock is returned by the context manager.
--
--    `target` should be a string in the form `'package.module.ClassName'`. The
--    `target` is imported and the specified object replaced with the `new`
--    object, so the `target` must be importable from the environment you are
--    calling `patch` from. The target is imported when the decorated function
--    is executed, not at decoration time.
--
--    The `spec` and `spec_set` keyword arguments are passed to the `MagicMock`
--    if patch is creating one for you.
--
--    In addition you can pass `spec=True` or `spec_set=True`, which causes
--    patch to pass in the object being mocked as the spec/spec_set object.
--
--    `new_callable` allows you to specify a different class, or callable object,
--    that will be called to create the `new` object. By default `MagicMock` is
--    used.
--
--    A more powerful form of `spec` is `autospec`. If you set `autospec=True`
--    then the mock with be created with a spec from the object being replaced.
--    All attributes of the mock will also have the spec of the corresponding
--    attribute of the object being replaced. Methods and functions being
--    mocked will have their arguments checked and will raise a `TypeError` if
--    they are called with the wrong signature. For mocks replacing a class,
--    their return value (the 'instance') will have the same spec as the class.
--
--    Instead of `autospec=True` you can pass `autospec=some_object` to use an
--    arbitrary object as the spec instead of the one being replaced.
--
--    By default `patch` will fail to replace attributes that don't exist. If
--    you pass in `create=True`, and the attribute doesn't exist, patch will
--    create the attribute for you when the patched function is called, and
--    delete it again afterwards. This is useful for writing tests against
--    attributes that your production code creates at runtime. It is off by by
--    default because it can be dangerous. With it switched on you can write
--    passing tests against APIs that don't actually exist!
--
--    Patch can be used as a `TestCase` class decorator. It works by
--    decorating each test method in the class. This reduces the boilerplate
--    code when your test methods share a common patchings set. `patch` finds
--    tests by looking for method names that start with `patch.TEST_PREFIX`.
--    By default this is `test`, which matches the way `unittest` finds tests.
--    You can specify an alternative prefix by setting `patch.TEST_PREFIX`.
--
--    Patch can be used as a context manager, with the with statement. Here the
--    patching applies to the indented block after the with statement. If you
--    use "as" then the patched object will be bound to the name after the
--    "as"; very useful if `patch` is creating a mock object for you.
--
--    `patch` takes arbitrary keyword arguments. These will be passed to
--    the `Mock` (or `new_callable`) on construction.
--
--    `patch.dict(...)`, `patch.multiple(...)` and `patch.object(...)` are
--    available for alternate use-cases.
--    """
--    getter, attribute = _get_target(target)
--    return _patch(
--        getter, attribute, new, spec, create,
--        spec_set, autospec, new_callable, kwargs
--    )
--
--
--class _patch_dict(object):
--    """
--    Patch a dictionary, or dictionary like object, and restore the dictionary
--    to its original state after the test.
--
--    `in_dict` can be a dictionary or a mapping like container. If it is a
--    mapping then it must at least support getting, setting and deleting items
--    plus iterating over keys.
--
--    `in_dict` can also be a string specifying the name of the dictionary, which
--    will then be fetched by importing it.
--
--    `values` can be a dictionary of values to set in the dictionary. `values`
--    can also be an iterable of `(key, value)` pairs.
--
--    If `clear` is True then the dictionary will be cleared before the new
--    values are set.
--
--    `patch.dict` can also be called with arbitrary keyword arguments to set
--    values in the dictionary::
--
--        with patch.dict('sys.modules', mymodule=Mock(), other_module=Mock()):
--            ...
--
--    `patch.dict` can be used as a context manager, decorator or class
--    decorator. When used as a class decorator `patch.dict` honours
--    `patch.TEST_PREFIX` for choosing which methods to wrap.
--    """
--
--    def __init__(self, in_dict, values=(), clear=False, **kwargs):
--        if isinstance(in_dict, basestring):
--            in_dict = _importer(in_dict)
--        self.in_dict = in_dict
--        # support any argument supported by dict(...) constructor
--        self.values = dict(values)
--        self.values.update(kwargs)
--        self.clear = clear
--        self._original = None
--
--
--    def __call__(self, f):
--        if isinstance(f, ClassTypes):
--            return self.decorate_class(f)
--        @wraps(f)
--        def _inner(*args, **kw):
--            self._patch_dict()
--            try:
--                return f(*args, **kw)
--            finally:
--                self._unpatch_dict()
--
--        return _inner
--
--
--    def decorate_class(self, klass):
--        for attr in dir(klass):
--            attr_value = getattr(klass, attr)
--            if (attr.startswith(patch.TEST_PREFIX) and
--                 hasattr(attr_value, "__call__")):
--                decorator = _patch_dict(self.in_dict, self.values, self.clear)
--                decorated = decorator(attr_value)
--                setattr(klass, attr, decorated)
--        return klass
--
--
--    def __enter__(self):
--        """Patch the dict."""
--        self._patch_dict()
--
--
--    def _patch_dict(self):
--        values = self.values
--        in_dict = self.in_dict
--        clear = self.clear
--
--        try:
--            original = in_dict.copy()
--        except AttributeError:
--            # dict like object with no copy method
--            # must support iteration over keys
--            original = {}
--            for key in in_dict:
--                original[key] = in_dict[key]
--        self._original = original
--
--        if clear:
--            _clear_dict(in_dict)
--
--        try:
--            in_dict.update(values)
--        except AttributeError:
--            # dict like object with no update method
--            for key in values:
--                in_dict[key] = values[key]
--
--
--    def _unpatch_dict(self):
--        in_dict = self.in_dict
--        original = self._original
--
--        _clear_dict(in_dict)
--
--        try:
--            in_dict.update(original)
--        except AttributeError:
--            for key in original:
--                in_dict[key] = original[key]
--
--
--    def __exit__(self, *args):
--        """Unpatch the dict."""
--        self._unpatch_dict()
--        return False
--
--    start = __enter__
--    stop = __exit__
--
--
--def _clear_dict(in_dict):
--    try:
--        in_dict.clear()
--    except AttributeError:
--        keys = list(in_dict)
--        for key in keys:
--            del in_dict[key]
--
--
--def _patch_stopall():
--    """Stop all active patches."""
--    for patch in list(_patch._active_patches):
--        patch.stop()
--
--
--patch.object = _patch_object
--patch.dict = _patch_dict
--patch.multiple = _patch_multiple
--patch.stopall = _patch_stopall
--patch.TEST_PREFIX = 'test'
--
--magic_methods = (
--    "lt le gt ge eq ne "
--    "getitem setitem delitem "
--    "len contains iter "
--    "hash str sizeof "
--    "enter exit "
--    "divmod neg pos abs invert "
--    "complex int float index "
--    "trunc floor ceil "
--)
--
--numerics = "add sub mul div floordiv mod lshift rshift and xor or pow "
--inplace = ' '.join('i%s' % n for n in numerics.split())
--right = ' '.join('r%s' % n for n in numerics.split())
--extra = ''
--if inPy3k:
--    extra = 'bool next '
--else:
--    extra = 'unicode long nonzero oct hex truediv rtruediv '
--
--# not including __prepare__, __instancecheck__, __subclasscheck__
--# (as they are metaclass methods)
--# __del__ is not supported at all as it causes problems if it exists
--
--_non_defaults = set('__%s__' % method for method in [
--    'cmp', 'getslice', 'setslice', 'coerce', 'subclasses',
--    'format', 'get', 'set', 'delete', 'reversed',
--    'missing', 'reduce', 'reduce_ex', 'getinitargs',
--    'getnewargs', 'getstate', 'setstate', 'getformat',
--    'setformat', 'repr', 'dir'
--])
--
--
--def _get_method(name, func):
--    "Turns a callable object (like a mock) into a real function"
--    def method(self, *args, **kw):
--        return func(self, *args, **kw)
--    method.__name__ = name
--    return method
--
--
--_magics = set(
--    '__%s__' % method for method in
--    ' '.join([magic_methods, numerics, inplace, right, extra]).split()
--)
--
--_all_magics = _magics | _non_defaults
--
--_unsupported_magics = set([
--    '__getattr__', '__setattr__',
--    '__init__', '__new__', '__prepare__'
--    '__instancecheck__', '__subclasscheck__',
--    '__del__'
--])
--
--_calculate_return_value = {
--    '__hash__': lambda self: object.__hash__(self),
--    '__str__': lambda self: object.__str__(self),
--    '__sizeof__': lambda self: object.__sizeof__(self),
--    '__unicode__': lambda self: unicode(object.__str__(self)),
--}
--
--_return_values = {
--    '__lt__': NotImplemented,
--    '__gt__': NotImplemented,
--    '__le__': NotImplemented,
--    '__ge__': NotImplemented,
--    '__int__': 1,
--    '__contains__': False,
--    '__len__': 0,
--    '__exit__': False,
--    '__complex__': 1j,
--    '__float__': 1.0,
--    '__bool__': True,
--    '__nonzero__': True,
--    '__oct__': '1',
--    '__hex__': '0x1',
--    '__long__': long(1),
--    '__index__': 1,
--}
--
--
--def _get_eq(self):
--    def __eq__(other):
--        ret_val = self.__eq__._mock_return_value
--        if ret_val is not DEFAULT:
--            return ret_val
--        return self is other
--    return __eq__
--
--def _get_ne(self):
--    def __ne__(other):
--        if self.__ne__._mock_return_value is not DEFAULT:
--            return DEFAULT
--        return self is not other
--    return __ne__
--
--def _get_iter(self):
--    def __iter__():
--        ret_val = self.__iter__._mock_return_value
--        if ret_val is DEFAULT:
--            return iter([])
--        # if ret_val was already an iterator, then calling iter on it should
--        # return the iterator unchanged
--        return iter(ret_val)
--    return __iter__
--
--_side_effect_methods = {
--    '__eq__': _get_eq,
--    '__ne__': _get_ne,
--    '__iter__': _get_iter,
--}
--
--
--
--def _set_return_value(mock, method, name):
--    fixed = _return_values.get(name, DEFAULT)
--    if fixed is not DEFAULT:
--        method.return_value = fixed
--        return
--
--    return_calulator = _calculate_return_value.get(name)
--    if return_calulator is not None:
--        try:
--            return_value = return_calulator(mock)
--        except AttributeError:
--            # XXXX why do we return AttributeError here?
--            #      set it as a side_effect instead?
--            return_value = AttributeError(name)
--        method.return_value = return_value
--        return
--
--    side_effector = _side_effect_methods.get(name)
--    if side_effector is not None:
--        method.side_effect = side_effector(mock)
--
--
--
--class MagicMixin(object):
--    def __init__(self, *args, **kw):
--        _super(MagicMixin, self).__init__(*args, **kw)
--        self._mock_set_magics()
--
--
--    def _mock_set_magics(self):
--        these_magics = _magics
--
--        if self._mock_methods is not None:
--            these_magics = _magics.intersection(self._mock_methods)
--
--            remove_magics = set()
--            remove_magics = _magics - these_magics
--
--            for entry in remove_magics:
--                if entry in type(self).__dict__:
--                    # remove unneeded magic methods
--                    delattr(self, entry)
--
--        # don't overwrite existing attributes if called a second time
--        these_magics = these_magics - set(type(self).__dict__)
--
--        _type = type(self)
--        for entry in these_magics:
--            setattr(_type, entry, MagicProxy(entry, self))
--
--
--
--class NonCallableMagicMock(MagicMixin, NonCallableMock):
--    """A version of `MagicMock` that isn't callable."""
--    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)
--        self._mock_set_magics()
--
--
--
--class MagicMock(MagicMixin, Mock):
--    """
--    MagicMock is a subclass of Mock with default implementations
--    of most of the magic methods. You can use MagicMock without having to
--    configure the magic methods yourself.
--
--    If you use the `spec` or `spec_set` arguments then *only* magic
--    methods that exist in the spec will be created.
--
--    Attributes and the return value of a `MagicMock` will also be `MagicMocks`.
--    """
--    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)
--        self._mock_set_magics()
--
--
--
--class MagicProxy(object):
--    def __init__(self, name, parent):
--        self.name = name
--        self.parent = parent
--
--    def __call__(self, *args, **kwargs):
--        m = self.create_mock()
--        return m(*args, **kwargs)
--
--    def create_mock(self):
--        entry = self.name
--        parent = self.parent
--        m = parent._get_child_mock(name=entry, _new_name=entry,
--                                   _new_parent=parent)
--        setattr(parent, entry, m)
--        _set_return_value(parent, m, entry)
--        return m
--
--    def __get__(self, obj, _type=None):
--        return self.create_mock()
--
--
--
--class _ANY(object):
--    "A helper object that compares equal to everything."
--
--    def __eq__(self, other):
--        return True
--
--    def __ne__(self, other):
--        return False
--
--    def __repr__(self):
--        return '<ANY>'
--
--ANY = _ANY()
--
--
--
--def _format_call_signature(name, args, kwargs):
--    message = '%s(%%s)' % name
--    formatted_args = ''
--    args_string = ', '.join([repr(arg) for arg in args])
--    kwargs_string = ', '.join([
--        '%s=%r' % (key, value) for key, value in kwargs.items()
--    ])
--    if args_string:
--        formatted_args = args_string
--    if kwargs_string:
--        if formatted_args:
--            formatted_args += ', '
--        formatted_args += kwargs_string
--
--    return message % formatted_args
--
--
--
--class _Call(tuple):
--    """
--    A tuple for holding the results of a call to a mock, either in the form
--    `(args, kwargs)` or `(name, args, kwargs)`.
--
--    If args or kwargs are empty then a call tuple will compare equal to
--    a tuple without those values. This makes comparisons less verbose::
--
--        _Call(('name', (), {})) == ('name',)
--        _Call(('name', (1,), {})) == ('name', (1,))
--        _Call(((), {'a': 'b'})) == ({'a': 'b'},)
--
--    The `_Call` object provides a useful shortcut for comparing with call::
--
--        _Call(((1, 2), {'a': 3})) == call(1, 2, a=3)
--        _Call(('foo', (1, 2), {'a': 3})) == call.foo(1, 2, a=3)
--
--    If the _Call has no name then it will match any name.
--    """
--    def __new__(cls, value=(), name=None, parent=None, two=False,
--                from_kall=True):
--        name = ''
--        args = ()
--        kwargs = {}
--        _len = len(value)
--        if _len == 3:
--            name, args, kwargs = value
--        elif _len == 2:
--            first, second = value
--            if isinstance(first, basestring):
--                name = first
--                if isinstance(second, tuple):
--                    args = second
--                else:
--                    kwargs = second
--            else:
--                args, kwargs = first, second
--        elif _len == 1:
--            value, = value
--            if isinstance(value, basestring):
--                name = value
--            elif isinstance(value, tuple):
--                args = value
--            else:
--                kwargs = value
--
--        if two:
--            return tuple.__new__(cls, (args, kwargs))
--
--        return tuple.__new__(cls, (name, args, kwargs))
--
--
--    def __init__(self, value=(), name=None, parent=None, two=False,
--                 from_kall=True):
--        self.name = name
--        self.parent = parent
--        self.from_kall = from_kall
--
--
--    def __eq__(self, other):
--        if other is ANY:
--            return True
--        try:
--            len_other = len(other)
--        except TypeError:
--            return False
--
--        self_name = ''
--        if len(self) == 2:
--            self_args, self_kwargs = self
--        else:
--            self_name, self_args, self_kwargs = self
--
--        other_name = ''
--        if len_other == 0:
--            other_args, other_kwargs = (), {}
--        elif len_other == 3:
--            other_name, other_args, other_kwargs = other
--        elif len_other == 1:
--            value, = other
--            if isinstance(value, tuple):
--                other_args = value
--                other_kwargs = {}
--            elif isinstance(value, basestring):
--                other_name = value
--                other_args, other_kwargs = (), {}
--            else:
--                other_args = ()
--                other_kwargs = value
--        else:
--            # len 2
--            # could be (name, args) or (name, kwargs) or (args, kwargs)
--            first, second = other
--            if isinstance(first, basestring):
--                other_name = first
--                if isinstance(second, tuple):
--                    other_args, other_kwargs = second, {}
--                else:
--                    other_args, other_kwargs = (), second
--            else:
--                other_args, other_kwargs = first, second
--
--        if self_name and other_name != self_name:
--            return False
--
--        # this order is important for ANY to work!
--        return (other_args, other_kwargs) == (self_args, self_kwargs)
--
--
--    def __ne__(self, other):
--        return not self.__eq__(other)
--
--
--    def __call__(self, *args, **kwargs):
--        if self.name is None:
--            return _Call(('', args, kwargs), name='()')
--
--        name = self.name + '()'
--        return _Call((self.name, args, kwargs), name=name, parent=self)
--
--
--    def __getattr__(self, attr):
--        if self.name is None:
--            return _Call(name=attr, from_kall=False)
--        name = '%s.%s' % (self.name, attr)
--        return _Call(name=name, parent=self, from_kall=False)
--
--
--    def __repr__(self):
--        if not self.from_kall:
--            name = self.name or 'call'
--            if name.startswith('()'):
--                name = 'call%s' % name
--            return name
--
--        if len(self) == 2:
--            name = 'call'
--            args, kwargs = self
--        else:
--            name, args, kwargs = self
--            if not name:
--                name = 'call'
--            elif not name.startswith('()'):
--                name = 'call.%s' % name
--            else:
--                name = 'call%s' % name
--        return _format_call_signature(name, args, kwargs)
--
--
--    def call_list(self):
--        """For a call object that represents multiple calls, `call_list`
--        returns a list of all the intermediate calls as well as the
--        final call."""
--        vals = []
--        thing = self
--        while thing is not None:
--            if thing.from_kall:
--                vals.append(thing)
--            thing = thing.parent
--        return _CallList(reversed(vals))
--
--
--call = _Call(from_kall=False)
--
--
--
--def create_autospec(spec, spec_set=False, instance=False, _parent=None,
--                    _name=None, **kwargs):
--    """Create a mock object using another object as a spec. Attributes on the
--    mock will use the corresponding attribute on the `spec` object as their
--    spec.
--
--    Functions or methods being mocked will have their arguments checked
--    to check that they are called with the correct signature.
--
--    If `spec_set` is True then attempting to set attributes that don't exist
--    on the spec object will raise an `AttributeError`.
--
--    If a class is used as a spec then the return value of the mock (the
--    instance of the class) will have the same spec. You can use a class as the
--    spec for an instance object by passing `instance=True`. The returned mock
--    will only be callable if instances of the mock are callable.
--
--    `create_autospec` also takes arbitrary keyword arguments that are passed to
--    the constructor of the created mock."""
--    if _is_list(spec):
--        # can't pass a list instance to the mock constructor as it will be
--        # interpreted as a list of strings
--        spec = type(spec)
--
--    is_type = isinstance(spec, ClassTypes)
--
--    _kwargs = {'spec': spec}
--    if spec_set:
--        _kwargs = {'spec_set': spec}
--    elif spec is None:
--        # None we mock with a normal mock without a spec
--        _kwargs = {}
--
--    _kwargs.update(kwargs)
--
--    Klass = MagicMock
--    if type(spec) in DescriptorTypes:
--        # descriptors don't have a spec
--        # because we don't know what type they return
--        _kwargs = {}
--    elif not _callable(spec):
--        Klass = NonCallableMagicMock
--    elif is_type and instance and not _instance_callable(spec):
--        Klass = NonCallableMagicMock
--
--    _new_name = _name
--    if _parent is None:
--        # for a top level object no _new_name should be set
--        _new_name = ''
--
--    mock = Klass(parent=_parent, _new_parent=_parent, _new_name=_new_name,
--                 name=_name, **_kwargs)
--
--    if isinstance(spec, FunctionTypes):
--        # should only happen at the top level because we don't
--        # recurse for functions
--        mock = _set_signature(mock, spec)
--    else:
--        _check_signature(spec, mock, is_type, instance)
--
--    if _parent is not None and not instance:
--        _parent._mock_children[_name] = mock
--
--    if is_type and not instance and 'return_value' not in kwargs:
--        mock.return_value = create_autospec(spec, spec_set, instance=True,
--                                            _name='()', _parent=mock)
--
--    for entry in dir(spec):
--        if _is_magic(entry):
--            # MagicMock already does the useful magic methods for us
--            continue
--
--        if isinstance(spec, FunctionTypes) and entry in FunctionAttributes:
--            # allow a mock to actually be a function
--            continue
--
--        # XXXX do we need a better way of getting attributes without
--        # triggering code execution (?) Probably not - we need the actual
--        # object to mock it so we would rather trigger a property than mock
--        # the property descriptor. Likewise we want to mock out dynamically
--        # provided attributes.
--        # XXXX what about attributes that raise exceptions other than
--        # AttributeError on being fetched?
--        # we could be resilient against it, or catch and propagate the
--        # exception when the attribute is fetched from the mock
--        try:
--            original = getattr(spec, entry)
--        except AttributeError:
--            continue
--
--        kwargs = {'spec': original}
--        if spec_set:
--            kwargs = {'spec_set': original}
--
--        if not isinstance(original, FunctionTypes):
--            new = _SpecState(original, spec_set, mock, entry, instance)
--            mock._mock_children[entry] = new
--        else:
--            parent = mock
--            if isinstance(spec, FunctionTypes):
--                parent = mock.mock
--
--            new = MagicMock(parent=parent, name=entry, _new_name=entry,
--                            _new_parent=parent, **kwargs)
--            mock._mock_children[entry] = new
--            skipfirst = _must_skip(spec, entry, is_type)
--            _check_signature(original, new, skipfirst=skipfirst)
--
--        # so functions created with _set_signature become instance attributes,
--        # *plus* their underlying mock exists in _mock_children of the parent
--        # mock. Adding to _mock_children may be unnecessary where we are also
--        # setting as an instance attribute?
--        if isinstance(new, FunctionTypes):
--            setattr(mock, entry, new)
--
--    return mock
--
--
--def _must_skip(spec, entry, is_type):
--    if not isinstance(spec, ClassTypes):
--        if entry in getattr(spec, '__dict__', {}):
--            # instance attribute - shouldn't skip
--            return False
--        spec = spec.__class__
--    if not hasattr(spec, '__mro__'):
--        # old style class: can't have descriptors anyway
--        return is_type
--
--    for klass in spec.__mro__:
--        result = klass.__dict__.get(entry, DEFAULT)
--        if result is DEFAULT:
--            continue
--        if isinstance(result, (staticmethod, classmethod)):
--            return False
--        return is_type
--
--    # shouldn't get here unless function is a dynamically provided attribute
--    # XXXX untested behaviour
--    return is_type
--
--
--def _get_class(obj):
--    try:
--        return obj.__class__
--    except AttributeError:
--        # in Python 2, _sre.SRE_Pattern objects have no __class__
--        return type(obj)
--
--
--class _SpecState(object):
--
--    def __init__(self, spec, spec_set=False, parent=None,
--                 name=None, ids=None, instance=False):
--        self.spec = spec
--        self.ids = ids
--        self.spec_set = spec_set
--        self.parent = parent
--        self.instance = instance
--        self.name = name
--
--
--FunctionTypes = (
--    # python function
--    type(create_autospec),
--    # instance method
--    type(ANY.__eq__),
--    # unbound method
--    type(_ANY.__eq__),
--)
--
--FunctionAttributes = set([
--    'func_closure',
--    'func_code',
--    'func_defaults',
--    'func_dict',
--    'func_doc',
--    'func_globals',
--    'func_name',
--])
--
--
--file_spec = None
--
--
--def mock_open(mock=None, read_data=''):
--    """
--    A helper function to create a mock to replace the use of `open`. It works
--    for `open` called directly or used as a context manager.
--
--    The `mock` argument is the mock object to configure. If `None` (the
--    default) then a `MagicMock` will be created for you, with the API limited
--    to methods or attributes available on standard file handles.
--
--    `read_data` is a string for the `read` method of the file handle to return.
--    This is an empty string by default.
--    """
--    global file_spec
--    if file_spec is None:
--        # set on first use
--        if inPy3k:
--            import _io
--            file_spec = list(set(dir(_io.TextIOWrapper)).union(set(dir(_io.BytesIO))))
--        else:
--            file_spec = file
--
--    if mock is None:
--        mock = MagicMock(name='open', spec=open)
--
--    handle = MagicMock(spec=file_spec)
--    handle.write.return_value = None
--    handle.__enter__.return_value = handle
--    handle.read.return_value = read_data
--
--    mock.return_value = handle
--    return mock
--
--
--class PropertyMock(Mock):
--    """
--    A mock intended to be used as a property, or other descriptor, on a class.
--    `PropertyMock` provides `__get__` and `__set__` methods so you can specify
--    a return value when it is fetched.
--
--    Fetching a `PropertyMock` instance from an object calls the mock, with
--    no args. Setting it calls the mock with the value being set.
--    """
--    def _get_child_mock(self, **kwargs):
--        return MagicMock(**kwargs)
--
--    def __get__(self, obj, obj_type):
--        return self()
--    def __set__(self, obj, val):
--        self(val)
-+# This file is part of Checkbox.
-+#
-+# Copyright 2014 Canonical Ltd.
-+# Written by:
-+#   Zygmunt Krynicki <[e-mail]>
-+#
-+# Checkbox is free software: you can redistribute it and/or modify
-+# it under the terms of the GNU General Public License as published by
-+# the Free Software Foundation, either version 3 of the License, or
-+# (at your option) any later version.
-+#
-+# Checkbox is distributed in the hope that it will be useful,
-+# but WITHOUT ANY WARRANTY; without even the implied warranty of
-+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-+# GNU General Public License for more details.
-+#
-+# You should have received a copy of the GNU General Public License
-+# along with Checkbox.  If not, see <http://www.gnu.org/licenses/>.
-+
-+"""
-+:mod:`checkbox_support.vendor.mock` -- vendorized mock module
-+=============================================================
-+
-+This file has been patched-away by the Debian package as compared to the
-+upstream version, not to ship a copy of the 'mock' module that is now
-+integrated into the upstream python3.3 release.
-+"""
-+
-+from unittest.mock import *