Viewing file:  issequence_containinginorder.py (3.74 KB) -rw-r--r--
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import warnings
from typing import Optional, Sequence, TypeVar, Union
from hamcrest.core.base_matcher import BaseMatcher
from hamcrest.core.description import Description
from hamcrest.core.helpers.wrap_matcher import wrap_matcher
from hamcrest.core.matcher import Matcher
__author__ = "Jon Reid"
__copyright__ = "Copyright 2011 hamcrest.org"
__license__ = "BSD, see License.txt"
T = TypeVar("T")
class MatchingInOrder(object):
def __init__(
self, matchers: Sequence[Matcher[T]], mismatch_description: Optional[Description]
) -> None:
self.matchers = matchers
self.mismatch_description = mismatch_description
self.next_match_index = 0
def matches(self, item: T) -> bool:
return self.isnotsurplus(item) and self.ismatched(item)
def isfinished(self) -> bool:
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: T) -> bool:
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: T) -> bool:
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[Sequence[T]]):
def __init__(self, matchers: Sequence[Matcher[T]]) -> None:
self.matchers = matchers
def matches(
self, item: Sequence[T], mismatch_description: Optional[Description] = None
) -> bool:
try:
matchsequence = MatchingInOrder(self.matchers, mismatch_description)
for element in item:
if not matchsequence.matches(element):
return False
return matchsequence.isfinished()
except TypeError:
if mismatch_description:
super(IsSequenceContainingInOrder, self).describe_mismatch(
item, mismatch_description
)
return False
def describe_mismatch(self, item: Sequence[T], mismatch_description: Description) -> None:
self.matches(item, mismatch_description)
def describe_to(self, description: Description) -> None:
description.append_text("a sequence containing ").append_list("[", ", ", "]", self.matchers)
def contains_exactly(*items: Union[Matcher[T], T]) -> Matcher[Sequence[T]]:
"""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)
def contains(*items: Union[Matcher[T], T]) -> Matcher[Sequence[T]]:
"""Deprecated - use contains_exactly(*items)"""
warnings.warn("deprecated - use contains_exactly(*items)", DeprecationWarning)
return contains_exactly(*items)
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