60 lines
1.8 KiB
Python
60 lines
1.8 KiB
Python
from typing import Sequence, TypeVar, Union
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from hamcrest.core.base_matcher import BaseMatcher
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from hamcrest.core.core.anyof import any_of
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from hamcrest.core.description import Description
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from hamcrest.core.helpers.wrap_matcher import wrap_matcher
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from hamcrest.core.matcher import Matcher
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__author__ = "Jon Reid"
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__copyright__ = "Copyright 2011 hamcrest.org"
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__license__ = "BSD, see License.txt"
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T = TypeVar("T")
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class IsSequenceOnlyContaining(BaseMatcher[Sequence[T]]):
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def __init__(self, matcher: Matcher[T]) -> None:
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self.matcher = matcher
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def _matches(self, item: Sequence[T]) -> bool:
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try:
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sequence = list(item)
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if len(sequence) == 0:
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return False
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for element in sequence:
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if not self.matcher.matches(element):
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return False
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return True
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except TypeError:
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return False
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def describe_to(self, description: Description) -> None:
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description.append_text("a sequence containing items matching ").append_description_of(
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self.matcher
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)
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def only_contains(*items: Union[Matcher[T], T]) -> Matcher[Sequence[T]]:
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"""Matches if each element of sequence satisfies any of the given matchers.
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:param match1,...: A comma-separated list of matchers.
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This matcher iterates the evaluated sequence, confirming whether each
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element satisfies any of the given matchers.
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Example::
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only_contains(less_than(4))
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will match ``[3,1,2]``.
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Any argument that is not a matcher is implicitly wrapped in an
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:py:func:`~hamcrest.core.core.isequal.equal_to` matcher to check for
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equality.
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"""
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matchers = []
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for item in items:
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matchers.append(wrap_matcher(item))
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return IsSequenceOnlyContaining(any_of(*matchers))
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