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__author__ = "Jon Reid"
__copyright__ = "Copyright 2011 hamcrest.org"
__license__ = "BSD, see License.txt"
from hamcrest.core.base_matcher import BaseMatcher
from hamcrest.core.helpers.hasmethod import hasmethod
from hamcrest.core.helpers.wrap_matcher import wrap_matcher
class MatchingInOrder(object):
def __init__(self, matchers, mismatch_description):
self.matchers = matchers
self.mismatch_description = mismatch_description
self.next_match_index = 0
def matches(self, item):
return self.isnotsurplus(item) and self.ismatched(item)
def isfinished(self):
if self.next_match_index < len(self.matchers):
if self.mismatch_description:
self.mismatch_description.append_text('No item matched: ') \
.append_description_of(self.matchers[self.next_match_index])
return False
return True
def ismatched(self, item):
matcher = self.matchers[self.next_match_index]
if not matcher.matches(item):
if self.mismatch_description:
self.mismatch_description.append_text('item ' + str(self.next_match_index) + ': ')
matcher.describe_mismatch(item, self.mismatch_description)
return False
self.next_match_index += 1
return True
def isnotsurplus(self, item):
if len(self.matchers) <= self.next_match_index:
if self.mismatch_description:
self.mismatch_description.append_text('Not matched: ') \
.append_description_of(item)
return False
return True
class IsSequenceContainingInOrder(BaseMatcher):
def __init__(self, matchers):
self.matchers = matchers
def matches(self, sequence, mismatch_description=None):
try:
matchsequence = MatchingInOrder(self.matchers, mismatch_description)
for item in sequence:
if not matchsequence.matches(item):
return False
return matchsequence.isfinished()
except TypeError:
if mismatch_description:
super(IsSequenceContainingInOrder, self) \
.describe_mismatch(sequence, mismatch_description)
return False
def describe_mismatch(self, item, mismatch_description):
self.matches(item, mismatch_description)
def describe_to(self, description):
description.append_text('a sequence containing ') \
.append_list('[', ', ', ']', self.matchers)
def contains(*items):
"""Matches if sequence's elements satisfy a given list of matchers, in order.
:param match1,...: A comma-separated list of matchers.
This matcher iterates the evaluated sequence and a given list of matchers,
seeing if each element satisfies its corresponding matcher.
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 IsSequenceContainingInOrder(matchers)