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: /lib/python3/dist-packages/hamcrest/library/collection/ [ drwxr-xr-x ]
name : isdict_containingentries.py from hamcrest.core.base_matcher import BaseMatcher from hamcrest.core.helpers.hasmethod import hasmethod from hamcrest.core.helpers.wrap_matcher import wrap_matcher __author__ = "Jon Reid" __copyright__ = "Copyright 2011 hamcrest.org" __license__ = "BSD, see License.txt" class IsDictContainingEntries(BaseMatcher): def __init__(self, value_matchers): self.value_matchers = sorted(value_matchers.items()) def _not_a_dictionary(self, dictionary, mismatch_description): if mismatch_description: mismatch_description.append_description_of(dictionary) \ .append_text(' is not a mapping object') return False def matches(self, dictionary, mismatch_description=None): for key, value_matcher in self.value_matchers: try: if not key in dictionary: if mismatch_description: mismatch_description.append_text('no ') \ .append_description_of(key) \ .append_text(' key in ') \ .append_description_of(dictionary) return False except TypeError: return self._not_a_dictionary(dictionary, mismatch_description) try: actual_value = dictionary[key] except TypeError: return self._not_a_dictionary(dictionary, 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, mismatch_description): self.matches(item, mismatch_description) def describe_keyvalue(self, index, value, description): """Describes key-value pair at given index.""" description.append_description_of(index) \ .append_text(': ') \ .append_description_of(value) def describe_to(self, description): 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('}') 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)