for testing and deploying your application
for finding and fixing issues
for empowering human code reviews
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)
hamcrest /
PyHamcrest
