54 lines
1.8 KiB
Python
54 lines
1.8 KiB
Python
from typing import Any, Mapping, TypeVar, Union
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from hamcrest.core.base_matcher import BaseMatcher
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from hamcrest.core.description import Description
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from hamcrest.core.helpers.hasmethod import hasmethod
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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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V = TypeVar("V")
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class IsDictContainingValue(BaseMatcher[Mapping[Any, V]]):
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def __init__(self, value_matcher: Matcher[V]) -> None:
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self.value_matcher = value_matcher
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def _matches(self, item: Mapping[Any, V]) -> bool:
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if hasmethod(item, "values"):
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for value in item.values():
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if self.value_matcher.matches(value):
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return True
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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 dictionary containing value ").append_description_of(
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self.value_matcher
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)
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def has_value(value: Union[V, Matcher[V]]) -> Matcher[Mapping[Any, V]]:
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"""Matches if dictionary contains an entry whose value satisfies a given
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matcher.
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:param value_match: The matcher to satisfy for the value, or an expected
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value for :py:func:`~hamcrest.core.core.isequal.equal_to` matching.
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This matcher iterates the evaluated dictionary, searching for any key-value
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entry whose value satisfies the given matcher. If a matching entry is
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found, ``has_value`` is satisfied.
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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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Examples::
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has_value(equal_to('bar'))
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has_value('bar')
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"""
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return IsDictContainingValue(wrap_matcher(value))
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