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//lib/python3/dist-packages/hamcrest/library/collection/isdict_containingentries.py
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from typing import Any, Hashable, Mapping, Optional, TypeVar, Union, overload 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" K = TypeVar("K", bound=Hashable) V = TypeVar("V") class IsDictContainingEntries(BaseMatcher[Mapping[K, V]]): def __init__(self, value_matchers) -> None: self.value_matchers = sorted(value_matchers.items()) def _not_a_dictionary( self, item: Mapping[K, V], mismatch_description: Optional[Description] ) -> bool: if mismatch_description: mismatch_description.append_description_of(item).append_text(" is not a mapping object") return False def matches( self, item: Mapping[K, V], mismatch_description: Optional[Description] = None ) -> bool: for key, value_matcher in self.value_matchers: try: if key not in item: if mismatch_description: mismatch_description.append_text("no ").append_description_of( key ).append_text(" key in ").append_description_of(item) return False except TypeError: return self._not_a_dictionary(item, mismatch_description) try: actual_value = item[key] except TypeError: return self._not_a_dictionary(item, mismatch_description) if not value_matcher.matches(actual_value): if mismatch_description: mismatch_description.append_text("value for ").append_description_of( key ).append_text(" ") value_matcher.describe_mismatch(actual_value, mismatch_description) return False return True def describe_mismatch(self, item: Mapping[K, V], mismatch_description: Description) -> None: self.matches(item, mismatch_description) def describe_keyvalue(self, index: K, value: V, description: Description) -> None: """Describes key-value pair at given index.""" description.append_description_of(index).append_text(": ").append_description_of(value) def describe_to(self, description: Description) -> None: description.append_text("a dictionary containing {") first = True for key, value in self.value_matchers: if not first: description.append_text(", ") self.describe_keyvalue(key, value, description) first = False description.append_text("}") # Keyword argument form @overload def has_entries(**keys_valuematchers: Union[Matcher[V], V]) -> Matcher[Mapping[str, V]]: ... # Key to matcher dict form @overload def has_entries(keys_valuematchers: Mapping[K, Union[Matcher[V], V]]) -> Matcher[Mapping[K, V]]: ... # Alternating key/matcher form @overload def has_entries(*keys_valuematchers: Any) -> Matcher[Mapping[Any, Any]]: ... def has_entries(*keys_valuematchers, **kv_args): """Matches if dictionary contains entries satisfying a dictionary of keys and corresponding value matchers. :param matcher_dict: A dictionary mapping keys to associated value matchers, or to expected values for :py:func:`~hamcrest.core.core.isequal.equal_to` matching. Note that the keys must be actual keys, not matchers. Any value argument that is not a matcher is implicitly wrapped in an :py:func:`~hamcrest.core.core.isequal.equal_to` matcher to check for equality. Examples:: has_entries({'foo':equal_to(1), 'bar':equal_to(2)}) has_entries({'foo':1, 'bar':2}) ``has_entries`` also accepts a list of keyword arguments: .. function:: has_entries(keyword1=value_matcher1[, keyword2=value_matcher2[, ...]]) :param keyword1: A keyword to look up. :param valueMatcher1: The matcher to satisfy for the value, or an expected value for :py:func:`~hamcrest.core.core.isequal.equal_to` matching. Examples:: has_entries(foo=equal_to(1), bar=equal_to(2)) has_entries(foo=1, bar=2) Finally, ``has_entries`` also accepts a list of alternating keys and their value matchers: .. function:: has_entries(key1, value_matcher1[, ...]) :param key1: A key (not a matcher) to look up. :param valueMatcher1: The matcher to satisfy for the value, or an expected value for :py:func:`~hamcrest.core.core.isequal.equal_to` matching. Examples:: has_entries('foo', equal_to(1), 'bar', equal_to(2)) has_entries('foo', 1, 'bar', 2) """ if len(keys_valuematchers) == 1: try: base_dict = keys_valuematchers[0].copy() for key in base_dict: base_dict[key] = wrap_matcher(base_dict[key]) except AttributeError: raise ValueError( "single-argument calls to has_entries must pass a dict as the argument" ) else: if len(keys_valuematchers) % 2: raise ValueError("has_entries requires key-value pairs") base_dict = {} for index in range(int(len(keys_valuematchers) / 2)): base_dict[keys_valuematchers[2 * index]] = wrap_matcher( keys_valuematchers[2 * index + 1] ) for key, value in kv_args.items(): base_dict[key] = wrap_matcher(value) return IsDictContainingEntries(base_dict)
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