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from hamcrest.core.base_matcher import BaseMatcher
from hamcrest.core.core.anyof import any_of
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 IsSequenceOnlyContaining(BaseMatcher):
def __init__(self, matcher):
self.matcher = matcher
def _matches(self, sequence):
try:
sequence = list(sequence)
if len(sequence) == 0:
return False
for item in sequence:
if not self.matcher.matches(item):
return False
return True
except TypeError:
return False
def describe_to(self, description):
description.append_text('a sequence containing items matching ') \
.append_description_of(self.matcher)
def only_contains(*items):
"""Matches if each element of sequence satisfies any of the given matchers.
:param match1,...: A comma-separated list of matchers.
This matcher iterates the evaluated sequence, confirming whether each
element satisfies any of the given matchers.
Example::
only_contains(less_than(4))
will match ``[3,1,2]``.
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.
"""
matchers = []
for item in items:
matchers.append(wrap_matcher(item))
return IsSequenceOnlyContaining(any_of(*matchers))