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from hamcrest.core.base_matcher import BaseMatcher
from hamcrest.core.helpers.wrap_matcher import wrap_matcher
__author__ = "Jon Reid"
__copyright__ = "Copyright 2011 hamcrest.org"
__license__ = "BSD, see License.txt"
class HasString(BaseMatcher):
def __init__(self, str_matcher):
self.str_matcher = str_matcher
def _matches(self, item):
return self.str_matcher.matches(str(item))
def describe_to(self, description):
description.append_text('an object with str ') \
.append_description_of(self.str_matcher)
def has_string(match):
"""Matches if ``str(item)`` satisfies a given matcher.
:param match: The matcher to satisfy, or an expected value for
:py:func:`~hamcrest.core.core.isequal.equal_to` matching.
This matcher invokes the :py:func:`str` function on the evaluated object to
get its length, passing the result to a given matcher for evaluation. If
the ``match`` argument is not a matcher, it is implicitly wrapped in an
:py:func:`~hamcrest.core.core.isequal.equal_to` matcher to check for
equality.
Examples::
has_string(starts_with('foo'))
has_string('bar')
"""
return HasString(wrap_matcher(match))
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