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__author__ = "Romilly Cocking"
__copyright__ = "Copyright 2011 hamcrest.org"
__license__ = "BSD, see License.txt"
from hamcrest.core.base_matcher import BaseMatcher
from hamcrest.core.helpers.hasmethod import hasmethod
import six
class StringContainsInOrder(BaseMatcher):
def __init__(self, *substrings):
for substring in substrings:
if not isinstance(substring, six.string_types):
raise TypeError(self.__class__.__name__
+ ' requires string arguments')
self.substrings = substrings
def _matches(self, item):
if not hasmethod(item, 'find'):
return False
from_index = 0
for substring in self.substrings:
from_index = item.find(substring, from_index)
if from_index == -1:
return False
return True
def describe_to(self, description):
description.append_list('a string containing ', ', ', ' in order',
self.substrings)
def string_contains_in_order(*substrings):
"""Matches if object is a string containing a given list of substrings in
relative order.
:param string1,...: A comma-separated list of strings.
This matcher first checks whether the evaluated object is a string. If so,
it checks whether it contains a given list of strings, in relative order to
each other. The searches are performed starting from the beginning of the
evaluated string.
Example::
string_contains_in_order("bc", "fg", "jkl")
will match "abcdefghijklm".
"""
return StringContainsInOrder(*substrings)
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