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Name	Size	Permission
__pycache__	[ DIR ]	drwxr-xr-x
__init__.py	731 B	-rw-r--r--
allof.py	2.26 KB	-rw-r--r--
anyof.py	1.3 KB	-rw-r--r--
described_as.py	1.89 KB	-rw-r--r--
is_.py	2.97 KB	-rw-r--r--
isanything.py	975 B	-rw-r--r--
isequal.py	1.01 KB	-rw-r--r--
isinstanceof.py	1.23 KB	-rw-r--r--
isnone.py	745 B	-rw-r--r--
isnot.py	2.13 KB	-rw-r--r--
issame.py	1.31 KB	-rw-r--r--
raises.py	5.26 KB	-rw-r--r--

Code Editor : is_.py

from typing import Optional, Type, TypeVar, Union, overload

from hamcrest.core.base_matcher import BaseMatcher
from hamcrest.core.description import Description
from hamcrest.core.helpers.wrap_matcher import is_matchable_type, wrap_matcher
from hamcrest.core.matcher import Matcher

from .isinstanceof import instance_of

__author__ = "Jon Reid"
__copyright__ = "Copyright 2011 hamcrest.org"
__license__ = "BSD, see License.txt"

T = TypeVar("T")

class Is(BaseMatcher[T]):
    def __init__(self, matcher: Matcher[T]) -> None:
        self.matcher = matcher

def matches(self, item: T, mismatch_description: Optional[Description] = None) -> bool:
        return self.matcher.matches(item, mismatch_description)

def describe_mismatch(self, item: T, mismatch_description: Description) -> None:
        return self.matcher.describe_mismatch(item, mismatch_description)

def describe_to(self, description: Description):
        description.append_description_of(self.matcher)

@overload
def _wrap_value_or_type(x: Type) -> Matcher[object]:
    ...

@overload
def _wrap_value_or_type(x: T) -> Matcher[T]:
    ...

def _wrap_value_or_type(x):
    if is_matchable_type(x):
        return instance_of(x)
    else:
        return wrap_matcher(x)

@overload
def is_(x: Type) -> Matcher[object]:
    ...

@overload
def is_(x: Union[Matcher[T], T]) -> Matcher[T]:
    ...

def is_(x):
    """Decorates another matcher, or provides shortcuts to the frequently used
    ``is(equal_to(x))`` and ``is(instance_of(x))``.

:param x: The matcher to satisfy,  or a type for
        :py:func:`~hamcrest.core.core.isinstanceof.instance_of` matching, or an
        expected value for :py:func:`~hamcrest.core.core.isequal.equal_to`
        matching.

This matcher compares the evaluated object to the given matcher.

.. note::

PyHamcrest's ``is_`` matcher is unrelated to Python's ``is`` operator.
        The matcher for object identity is
        :py:func:`~hamcrest.core.core.issame.same_instance`.

If the ``x`` argument is a matcher, its behavior is retained, but the test
    may be more expressive. For example::

assert_that(value, less_than(5))
        assert_that(value, is_(less_than(5)))

If the ``x`` argument is a type, it is wrapped in an
    :py:func:`~hamcrest.core.core.isinstanceof.instance_of` matcher. This makes
    the following statements equivalent::

assert_that(cheese, instance_of(Cheddar))
        assert_that(cheese, is_(instance_of(Cheddar)))
        assert_that(cheese, is_(Cheddar))

Otherwise, if the ``x`` argument is not a matcher, it is wrapped in an
    :py:func:`~hamcrest.core.core.isequal.equal_to` matcher. This makes the
    following statements equivalent::

assert_that(cheese, equal_to(smelly))
        assert_that(cheese, is_(equal_to(smelly)))
        assert_that(cheese, is_(smelly))

Choose the style that makes your expression most readable. This will vary
    depending on context.

"""
    return Is(_wrap_value_or_type(x))

${this.title}

Code Editor : is_.py