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from hamcrest.core.base_matcher import BaseMatcher
from hamcrest.core.helpers.hasmethod import hasmethod
from hamcrest.core.helpers.wrap_matcher import wrap_matcher
__author__ = "Jon Reid"
__copyright__ = "Copyright 2011 hamcrest.org"
__license__ = "BSD, see License.txt"
class IsDictContainingValue(BaseMatcher):
def __init__(self, value_matcher):
self.value_matcher = value_matcher
def _matches(self, dictionary):
if hasmethod(dictionary, 'values'):
for value in dictionary.values():
if self.value_matcher.matches(value):
return True
return False
def describe_to(self, description):
description.append_text('a dictionary containing value ') \
.append_description_of(self.value_matcher)
def has_value(value):
"""Matches if dictionary contains an entry whose value satisfies a given
matcher.
:param value_match: The matcher to satisfy for the value, or an expected
value for :py:func:`~hamcrest.core.core.isequal.equal_to` matching.
This matcher iterates the evaluated dictionary, searching for any key-value
entry whose value satisfies the given matcher. If a matching entry is
found, ``has_value`` is satisfied.
Any argument that is not a matcher is implicitly wrapped in an
:py:func:`~hamcrest.core.core.isequal.equal_to` matcher to check for
equality.
Examples::
has_value(equal_to('bar'))
has_value('bar')
"""
return IsDictContainingValue(wrap_matcher(value))