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comparison.py	39.14 KB	-rw-r--r--
compat.py	224 B	-rw-r--r--
components.py	1.31 KB	-rw-r--r--
datetime.py	24.42 KB	-rw-r--r--
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Code Editor : datetime.py

from calendar import timegm
from datetime import datetime, timedelta, date, tzinfo as TZInfo
from typing import Optional, Callable, Type, Tuple, Dict, Any, cast, overload

class Queue(list):

delta: float
    delta_delta: float
    delta_type: str

def __init__(self, delta: Optional[float], delta_delta: float, delta_type: str):
        super().__init__()
        if delta is None:
            self.delta = 0
            self.delta_delta = delta_delta
        else:
            self.delta = delta
            self.delta_delta = 0
        self.delta_type = delta_type

def advance_next(self, delta: timedelta) -> None:
        self[-1] += delta

def next(self) -> 'MockedCurrent':
        instance = self.pop(0)
        if not self:
            self.delta += self.delta_delta
            n = instance + timedelta(**{self.delta_type: self.delta})
            self.append(n)
        return instance

class MockedCurrent:

_mock_queue: Queue
    _mock_base_class: Type
    _mock_class: Type
    _mock_tzinfo: Optional[TZInfo]
    _mock_date_type: Type[date]
    _correct_mock_type: Callable = None

def __init_subclass__(
            cls,
            concrete: bool = False,
            queue: Queue = None,
            strict: bool = None,
            tzinfo: TZInfo = None,
            date_type: Type[date] = None
    ):
        if concrete:
            cls._mock_queue = queue
            cls._mock_base_class = cls.__bases__[0].__bases__[1]
            cls._mock_class = cls if strict else cls._mock_base_class
            cls._mock_tzinfo = tzinfo
            cls._mock_date_type = date_type

@classmethod
    def add(cls, *args, **kw):
        if 'tzinfo' in kw or len(args) > 7:
            raise TypeError('Cannot add using tzinfo on %s' % cls.__name__)
        if args and isinstance(args[0], cls._mock_base_class):
            instance = args[0]
            instance_tzinfo = getattr(instance, 'tzinfo', None)
            if instance_tzinfo:
                if instance_tzinfo != cls._mock_tzinfo:
                    raise ValueError(
                        'Cannot add %s with tzinfo of %s as configured to use %s' % (
                            instance.__class__.__name__, instance_tzinfo, cls._mock_tzinfo
                        ))
                instance = instance.replace(tzinfo=None)
            if cls._correct_mock_type:
                instance = cls._correct_mock_type(instance)
        else:
            instance = cls(*args, **kw)
        cls._mock_queue.append(instance)

@classmethod
    def set(cls, *args, **kw) -> None:
        cls._mock_queue.clear()
        cls.add(*args, **kw)

@classmethod
    def tick(cls, *args, **kw) -> None:
        if kw:
            delta = timedelta(**kw)
        else:
            delta, = args
        cls._mock_queue.advance_next(delta)

def __add__(self, other) -> 'MockedCurrent':
        instance = super().__add__(other)
        if self._correct_mock_type:
            instance = self._correct_mock_type(instance)
        return instance

def __new__(cls, *args, **kw):
        if cls is cls._mock_class:
            return super().__new__(cls, *args, **kw)
        else:
            return cls._mock_class(*args, **kw)

def mock_factory(
        type_name: str,
        mock_class: Type[MockedCurrent],
        default: Tuple[int, ...],
        args: tuple,
        kw: Dict[str, Any],
        delta: Optional[float],
        delta_type: str,
        delta_delta: float = 1,
        date_type: Type[date] = None,
        tzinfo: TZInfo = None,
        strict: bool = False
):
    cls = cast(Type[MockedCurrent], type(
        type_name,
        (mock_class,),
        {},
        concrete=True,
        queue=Queue(delta, delta_delta, delta_type),
        strict=strict,
        tzinfo=tzinfo,
        date_type=date_type,
    ))

if args != (None,):
        if not (args or kw):
            args = default
        cls.add(*args, **kw)

return cls

class MockDateTime(MockedCurrent, datetime):

@overload
    @classmethod
    def add(
            cls,
            year: int,
            month: int,
            day: int,
            hour: int = ...,
            minute: int = ...,
            second: int = ...,
            microsecond: int = ...,
            tzinfo: TZInfo = ...,
    ) -> None:
        ...

@overload
    @classmethod
    def add(
            cls,
            instance: datetime,
    ) -> None:
        ...

@classmethod
    def add(cls, *args, **kw):
        """
        This will add the :class:`datetime.datetime` created from the
        supplied parameters to the queue of datetimes to be returned by
        :meth:`~MockDateTime.now` or :meth:`~MockDateTime.utcnow`. An instance
        of :class:`~datetime.datetime` may also be passed as a single
        positional argument.
        """
        return super().add(*args, **kw)

@overload
    @classmethod
    def set(
            cls,
            year: int,
            month: int,
            day: int,
            hour: int = ...,
            minute: int = ...,
            second: int = ...,
            microsecond: int = ...,
            tzinfo: TZInfo = ...,
    ) -> None:
        ...

@overload
    @classmethod
    def set(
            cls,
            instance: datetime,
    ) -> None:
        ...

@classmethod
    def set(cls, *args, **kw):
        """
        This will set the :class:`datetime.datetime` created from the
        supplied parameters as the next datetime to be returned by
        :meth:`~MockDateTime.now` or :meth:`~MockDateTime.utcnow`, clearing out
        any datetimes in the queue.  An instance
        of :class:`~datetime.datetime` may also be passed as a single
        positional argument.
        """
        return super().set(*args, **kw)

@overload
    @classmethod
    def tick(
            cls,
            days: float = ...,
            seconds: float = ...,
            microseconds: float = ...,
            milliseconds: float = ...,
            minutes: float = ...,
            hours: float = ...,
            weeks: float = ...,
    ) -> None:
        ...

@overload
    @classmethod
    def tick(
            cls,
            delta: timedelta,  # can become positional-only when Python 3.8 minimum
    ) -> None:
        ...

@classmethod
    def tick(cls, *args, **kw) -> None:
        """
        This method should be called either with a :class:`~datetime.timedelta`
        as a positional argument, or with keyword parameters that will be used
        to construct a :class:`~datetime.timedelta`.

The  :class:`~datetime.timedelta` will be used to advance the next datetime
        to be returned by :meth:`~MockDateTime.now` or :meth:`~MockDateTime.utcnow`.
        """
        return super().tick(*args, **kw)

@classmethod
    def _correct_mock_type(cls, instance):
        return cls._mock_class(
            instance.year,
            instance.month,
            instance.day,
            instance.hour,
            instance.minute,
            instance.second,
            instance.microsecond,
            instance.tzinfo,
        )

@classmethod
    def now(cls, tz: TZInfo = None) -> datetime:
        """
        :param tz: An optional timezone to apply to the returned time.
                If supplied, it must be an instance of a
                :class:`~datetime.tzinfo` subclass.

This will return the next supplied or calculated datetime from the
        internal queue, rather than the actual current datetime.

If `tz` is supplied, see :ref:`timezones`.
        """
        instance = cast(datetime, cls._mock_queue.next())
        if tz is not None:
            if cls._mock_tzinfo:
                instance = instance - cls._mock_tzinfo.utcoffset(instance)
            instance = tz.fromutc(instance.replace(tzinfo=tz))
        return cls._correct_mock_type(instance)

@classmethod
    def utcnow(cls) -> datetime:
        """
        This will return the next supplied or calculated datetime from the
        internal queue, rather than the actual current UTC datetime.

If you care about timezones, see :ref:`timezones`.
        """
        instance = cast(datetime, cls._mock_queue.next())
        if cls._mock_tzinfo is not None:
            instance = instance - cls._mock_tzinfo.utcoffset(instance)
        return instance

def date(self) -> date:
        """
        This will return the date component of the current mock instance,
        but using the date type supplied when the mock class was created.
        """
        return self._mock_date_type(
            self.year,
            self.month,
            self.day
            )

@overload
def mock_datetime(
        tzinfo: TZInfo = None,
        delta: float = None,
        delta_type: str = 'seconds',
        date_type: Type[date] = date,
        strict: bool = False
) -> Type[MockDateTime]:
    ...

@overload
def mock_datetime(
        year: int,
        month: int,
        day: int,
        hour: int = ...,
        minute: int = ...,
        second: int = ...,
        microsecond: int = ...,
        tzinfo: TZInfo = None,
        delta: float = None,
        delta_type: str = 'seconds',
        date_type: Type[date] = date,
        strict: bool = False
) -> Type[MockDateTime]:
    ...

@overload
def mock_datetime(
        default: datetime,
        tzinfo: TZInfo = None,
        delta: float = None,
        delta_type: str = 'seconds',
        date_type: Type[date] = date,
        strict: bool = False
) -> Type[MockDateTime]:
    ...

@overload
def mock_datetime(
        default: None,  # explicit None positional
        tzinfo: TZInfo = None,
        delta: float = None,
        delta_type: str = 'seconds',
        date_type: Type[date] = date,
        strict: bool = False
) -> Type[MockDateTime]:
    ...

def mock_datetime(
        *args,
        tzinfo: TZInfo = None,
        delta: float = None,
        delta_type: str = 'seconds',
        date_type: Type[date] = date,
        strict: bool = False,
        **kw,
) -> Type[MockDateTime]:
    """
    .. currentmodule:: testfixtures.datetime

A function that returns a mock object that can be used in place of
    the :class:`datetime.datetime` class but where the return value of
    :meth:`~MockDateTime.now` can be controlled.

If a single positional argument of ``None`` is passed, then the
    queue of datetimes to be returned will be empty and you will need to
    call :meth:`~MockDateTime.set` or :meth:`~MockDateTime.add` before calling
    :meth:`~MockDateTime.now` or :meth:`~MockDateTime.utcnow`.

If an instance of :class:`~datetime.datetime` is passed as a single
    positional argument, that will be used as the first date returned by
    :meth:`~MockDateTime.now`

:param year:
      An optional year used to create the first datetime returned by :meth:`~MockDateTime.now`.

:param month:
      An optional month used to create the first datetime returned by :meth:`~MockDateTime.now`.

:param day:
      An optional day used to create the first datetime returned by :meth:`~MockDateTime.now`.

:param hour:
      An optional hour used to create the first datetime returned by :meth:`~MockDateTime.now`.

:param minute:
      An optional minute used to create the first datetime returned by :meth:`~MockDateTime.now`.

:param second:
      An optional second used to create the first datetime returned by :meth:`~MockDateTime.now`.

:param microsecond:
      An optional microsecond used to create the first datetime returned by
      :meth:`~MockDateTime.now`.

:param tzinfo:
      An optional :class:`datetime.tzinfo`, see :ref:`timezones`.

:param delta:
      The size of the delta to use between values returned from mocked class methods.
      If not specified, it will increase by 1 with each call to :meth:`~MockDateTime.now`.

:param delta_type:
      The type of the delta to use between values returned from mocked class methods.
      This can be any keyword parameter accepted by the :class:`~datetime.timedelta` constructor.

:param date_type:
      The type to use for the return value of the mocked class methods.
      This can help with gotchas that occur when type checking is performed on values returned
      by the :meth:`~testfixtures.datetime.MockDateTime.date` method.

:param strict:
      If ``True``, calling the mock class and any of its methods will result in an instance of
      the mock being returned. If ``False``, the default, an instance of
      :class:`~datetime.datetime` will be returned instead.

The mock returned will behave exactly as the :class:`datetime.datetime` class
    as well as being a subclass of :class:`~testfixtures.datetime.MockDateTime`.
    """
    if len(args) > 7:
        tzinfo = args[7]
        args = args[:7]
    else:
        tzinfo = tzinfo or (getattr(args[0], 'tzinfo', None) if args else None)
    return cast(Type[MockDateTime], mock_factory(
        'MockDateTime',
        MockDateTime,
        (2001, 1, 1, 0, 0, 0),
        args,
        kw,
        tzinfo=tzinfo,
        delta=delta,
        delta_delta=10,
        delta_type=delta_type,
        date_type=date_type,
        strict=strict,
        ))

class MockDate(MockedCurrent, date):

@classmethod
    def _correct_mock_type(cls, instance):
        return cls._mock_class(
            instance.year,
            instance.month,
            instance.day,
        )

@overload
    @classmethod
    def add(
            cls,
            year: int,
            month: int,
            day: int,
    ) -> None:
        ...

@overload
    @classmethod
    def add(
            cls,
            instance: date,
    ) -> None:
        ...

@classmethod
    def add(cls, *args, **kw):
        """
        This will add the :class:`datetime.date` created from the
        supplied parameters to the queue of dates to be returned by
        :meth:`~MockDate.today`.  An instance
        of :class:`~datetime.date` may also be passed as a single
        positional argument.
        """
        return super().add(*args, **kw)

@overload
    @classmethod
    def set(
            cls,
            year: int,
            month: int,
            day: int,
    ) -> None:
        ...

@overload
    @classmethod
    def set(
            cls,
            instance: date,
    ) -> None:
        ...

@classmethod
    def set(cls, *args, **kw) -> None:
        """
        This will set the :class:`datetime.date` created from the
        supplied parameters as the next date to be returned by
        :meth:`~MockDate.today`, regardless of any dates in the
        queue.   An instance
        of :class:`~datetime.date` may also be passed as a single
        positional argument.
        """
        return super().set(*args, **kw)

@overload
    @classmethod
    def tick(
            cls,
            days: float = ...,
            weeks: float = ...,
    ) -> None:
        ...

@overload
    @classmethod
    def tick(
            cls,
            delta: timedelta,  # can become positional-only when Python 3.8 minimum
    ) -> None:
        ...

The  :class:`~datetime.timedelta` will be used to advance the next date
        to be returned by :meth:`~MockDate.today`.
        """
        return super().tick(*args, **kw)

@classmethod
    def today(cls) -> date:
        """
        This will return the next supplied or calculated date from the
        internal queue, rather than the actual current date.

"""
        return cast(date, cls._mock_queue.next())

@overload
def mock_date(
        delta: float = None,
        delta_type: str = None,
        date_type: Type[date] = date,
        strict: bool = False
) -> Type[MockDate]:
    ...

@overload
def mock_date(
        year: int,
        month: int,
        day: int,
        delta: float = None,
        delta_type: str = 'days',
        strict: bool = False,
) -> Type[MockDate]:
    ...

@overload
def mock_date(
        default: date,
        delta: float = None,
        delta_type: str = 'days',
        strict: bool = False,
) -> Type[MockDate]:
    ...

@overload
def mock_date(
        default: None,  # explicit None positional
        delta: float = None,
        delta_type: str = 'days',
        strict: bool = False,
) -> Type[MockDate]:
    ...

def mock_date(
        *args,
        delta: float = None,
        delta_type: str = 'days',
        strict: bool = False,
        **kw
) -> Type[MockDate]:
    """
    .. currentmodule:: testfixtures.datetime

A function that returns a mock object that can be used in place of
    the :class:`datetime.date` class but where the return value of
    :meth:`~datetime.date.today` can be controlled.

If a single positional argument of ``None`` is passed, then the
    queue of dates to be returned will be empty and you will need to
    call :meth:`~MockDate.set` or :meth:`~MockDate.add` before calling
    :meth:`~MockDate.today`.

If an instance of :class:`~datetime.date` is passed as a single
    positional argument, that will be used as the first date returned by
    :meth:`~datetime.date.today`

:param year:
      An optional year used to create the first date returned by :meth:`~datetime.date.today`.

:param month:
      An optional month used to create the first date returned by :meth:`~datetime.date.today`.

:param day:
      An optional day used to create the first date returned by :meth:`~datetime.date.today`.

:param delta:
      The size of the delta to use between values returned from :meth:`~datetime.date.today`.
      If not specified, it will increase by 1 with each call to :meth:`~datetime.date.today`.

:param delta_type:
      The type of the delta to use between values returned from :meth:`~datetime.date.today`.
      This can be any keyword parameter accepted by the :class:`~datetime.timedelta` constructor.

:param strict:
      If ``True``, calling the mock class and any of its methods will result in an instance of
      the mock being returned. If ``False``, the default, an instance of :class:`~datetime.date`
      will be returned instead.

The mock returned will behave exactly as the :class:`datetime.date` class
    as well as being a subclass of :class:`~testfixtures.datetime.MockDate`.
    """
    return cast(Type[MockDate], mock_factory(
        'MockDate', MockDate, (2001, 1, 1), args, kw,
        delta=delta,
        delta_type=delta_type,
        strict=strict,
        ))

ms = 10**6

class MockTime(MockedCurrent, datetime):

@overload
    @classmethod
    def add(
            cls,
            year: int,
            month: int,
            day: int,
            hour: int = ...,
            minute: int = ...,
            second: int = ...,
            microsecond: int = ...,
    ) -> None:
        ...

@overload
    @classmethod
    def add(
            cls,
            instance: datetime,
    ) -> None:
        ...

@classmethod
    def add(cls, *args, **kw):
        """
        This will add the time specified by the supplied parameters to the
        queue of times to be returned by calls to the mock. The
        parameters are the same as the :class:`datetime.datetime`
        constructor. An instance of :class:`~datetime.datetime` may also
        be passed as a single positional argument.
        """
        return super().add(*args, **kw)

@overload
    @classmethod
    def set(
            cls,
            year: int,
            month: int,
            day: int,
            hour: int = ...,
            minute: int = ...,
            second: int = ...,
            microsecond: int = ...,
    ) -> None:
        ...

@overload
    @classmethod
    def set(
            cls,
            instance: datetime,
    ) -> None:
        ...

@classmethod
    def set(cls, *args, **kw):
        """
        This will set the time specified by the supplied parameters as
        the next time to be returned by a call to the mock, regardless of
        any times in the queue.  The parameters are the same as the
        :class:`datetime.datetime` constructor.  An instance of
        :class:`~datetime.datetime` may also be passed as a single
        positional argument.
        """
        return super().set(*args, **kw)

@overload
    @classmethod
    def tick(
            cls,
            delta: timedelta,  # can become positional-only when Python 3.8 minimum
    ) -> None:
        ...

@classmethod
    def tick(cls, *args, **kw):
        """
        This method should be called either with a :class:`~datetime.timedelta`
        as a positional argument, or with keyword parameters that will be used
        to construct a :class:`~datetime.timedelta`.

The  :class:`~datetime.timedelta` will be used to advance the next time
        to be returned by a call to the mock.
        """
        return super().tick(*args, **kw)

def __new__(cls, *args, **kw) -> float:
        """
        Return a :class:`float` representing the mocked current time as would normally
        be returned by :func:`time.time`.
        """
        if args or kw:
            # Used when adding stuff to the queue
            return super().__new__(cls, *args, **kw)
        else:
            instance = cast(datetime, cls._mock_queue.next())
            time = timegm(instance.utctimetuple())
            time += (float(instance.microsecond)/ms)
            return time

@overload
def mock_time(
        delta: float = None,
        delta_type: str = 'seconds',
) -> Type[MockDateTime]:
    ...

@overload
def mock_time(
        year: int,
        month: int,
        day: int,
        hour: int = ...,
        minute: int = ...,
        second: int = ...,
        microsecond: int = ...,
        delta: float = None,
        delta_type: str = 'seconds',
) -> Type[MockDateTime]:
    ...

@overload
def mock_time(
        default: datetime,
        delta: float = None,
        delta_type: str = 'seconds',
) -> Type[MockDateTime]:
    ...

@overload
def mock_time(
        default: None,  # explicit None positional
        delta: float = None,
        delta_type: str = 'seconds',
) -> Type[MockDateTime]:
    ...

def mock_time(*args, delta: float = None, delta_type: str = 'seconds', **kw) -> Type[MockTime]:
    """
    .. currentmodule:: testfixtures.datetime

A function that returns a :class:`mock object <testfixtures.datetime.MockTime>` that can be
    used in place of the :func:`time.time` function but where the return value can be
    controlled.

If a single positional argument of ``None`` is passed, then the
    queue of times to be returned will be empty and you will need to
    call :meth:`~MockTime.set` or :meth:`~MockTime.add` before calling
    the mock.

If an instance of :class:`~datetime.datetime` is passed as a single
    positional argument, that will be used to create the first time returned.

:param year: An optional year used to create the first time returned.

:param month: An optional month used to create the first time.

:param day: An optional day used to create the first time.

:param hour: An optional hour used to create the first time.

:param minute: An optional minute used to create the first time.

:param second: An optional second used to create the first time.

:param microsecond: An optional microsecond used to create the first time.

:param delta:
      The size of the delta to use between values returned.
      If not specified, it will increase by 1 with each call to the mock.

:param delta_type:
      The type of the delta to use between values returned.
      This can be any keyword parameter accepted by the :class:`~datetime.timedelta` constructor.

The :meth:`~testfixtures.datetime.MockTime.add`, :meth:`~testfixtures.datetime.MockTime.set`
    and :meth:`~testfixtures.datetime.MockTime.tick` methods on the mock can be used to
    control the return values.
    """
    if 'tzinfo' in kw or len(args) > 7 or (args and getattr(args[0], 'tzinfo', None)):
        raise TypeError("You don't want to use tzinfo with test_time")
    return cast(Type[MockTime], mock_factory(
        'MockTime', MockTime, (2001, 1, 1, 0, 0, 0), args, kw,
        delta=delta,
        delta_type=delta_type,
        ))

${this.title}

Code Editor : datetime.py