from __future__ import absolute_import

from hamcrest.library.collection.isdict_containingvalue import *

from hamcrest.core.core.isequal import equal_to
from hamcrest_unit_test.matcher_test import MatcherTest
from .quasidict import QuasiDictionary
import unittest

__author__ = "Jon Reid"
__copyright__ = "Copyright 2011 hamcrest.org"
__license__ = "BSD, see License.txt"


class IsDictContainingValueTest(MatcherTest):

    def testMatchesSingletonDictionaryContainingValue(self):
        dict = {'a': 1}
        self.assert_matches('same single value', has_value(equal_to(1)), dict)

    def testMatchesDictionaryContainingValue(self):
        dict = {'a': 1, 'b': 2, 'c': 3}
        self.assert_matches('Matches 1', has_value(equal_to(1)), dict)
        self.assert_matches('Matches 3', has_value(equal_to(3)), dict)

    def testProvidesConvenientShortcutForMatchingWithEqualTo(self):
        dict = {'a': 1, 'b': 2, 'c': 3}
        self.assert_matches('Matches 3', has_value(3), dict)

    def testDoesNotMatchEmptyDictionary(self):
        self.assert_does_not_match('empty', has_value(1), {});

    def testDoesNotMatchDictionaryMissingValue(self):
        dict = {'a': 1, 'b': 2, 'c': 3}
        self.assert_does_not_match('no matching value', has_value(4), dict)

    def testMatchesAnyConformingDictionary(self):
        self.assert_matches('quasi-dictionary', has_value('1'), QuasiDictionary())
        self.assert_does_not_match('non-dictionary', has_value('1'), object())

    def testHasReadableDescription(self):
        self.assert_description("a dictionary containing value 'a'", has_value('a'))

    def testSuccessfulMatchDoesNotGenerateMismatchDescription(self):
        self.assert_no_mismatch_description(has_value(1), {'a': 1})

    def testMismatchDescriptionShowsActualArgument(self):
        self.assert_mismatch_description("was 'bad'", has_value(1), 'bad')

    def testDescribeMismatch(self):
        self.assert_describe_mismatch("was 'bad'", has_value(1), 'bad')


if __name__ == '__main__':
    unittest.main()
