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from typing import Optional, 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 AllOf(BaseMatcher[T]):
def __init__(self, *matchers: Matcher[T], **kwargs):
self.matchers = matchers
self.describe_matcher_in_mismatch = kwargs.pop(
"describe_matcher_in_mismatch", True
) # No keyword-only args in 2.7 :-(
self.describe_all_mismatches = kwargs.pop("describe_all_mismatches", False)
def matches(self, item: T, mismatch_description: Optional[Description] = None) -> bool:
found_mismatch = False
for i, matcher in enumerate(self.matchers):
if not matcher.matches(item):
if mismatch_description:
if self.describe_matcher_in_mismatch:
mismatch_description.append_description_of(matcher).append_text(" ")
matcher.describe_mismatch(item, mismatch_description)
found_mismatch = True
if not self.describe_all_mismatches:
break
elif i < len(self.matchers) - 1 and mismatch_description:
mismatch_description.append_text(" and ")
return not found_mismatch
def describe_mismatch(self, item: T, mismatch_description: Description) -> None:
self.matches(item, mismatch_description)
def describe_to(self, description: Description) -> None:
description.append_list("(", " and ", ")", self.matchers)
def all_of(*items: Union[Matcher[T], T]) -> Matcher[T]:
"""Matches if all of the given matchers evaluate to ``True``.
:param matcher1,...: A comma-separated list of matchers.
The matchers are evaluated from left to right using short-circuit
evaluation, so evaluation stops as soon as a matcher returns ``False``.
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.
"""
return AllOf(*[wrap_matcher(item) for item in items])
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