OwlCyberSecurity - MANAGER

Edit File: isinstanceof.py

from hamcrest.core.base_matcher import BaseMatcher
from hamcrest.core.helpers.wrap_matcher import is_matchable_type

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

import types

class IsInstanceOf(BaseMatcher):

def __init__(self, expected_type):
        if not is_matchable_type(expected_type):
            raise TypeError('IsInstanceOf requires type')
        self.expected_type = expected_type

def _matches(self, item):
        return isinstance(item, self.expected_type)

def describe_to(self, description):
        description.append_text('an instance of ')              \
                    .append_text(self.expected_type.__name__)

def instance_of(atype):
    """Matches if object is an instance of, or inherits from, a given type.

:param atype: The type to compare against as the expected type.

This matcher checks whether the evaluated object is an instance of
    ``atype`` or an instance of any class that inherits from ``atype``.

Example::

instance_of(str)

"""
    return IsInstanceOf(atype)