def add(self, elem, replace=False):
        """Add a requirement.

        :param elem: a string or :class:`Requirement` instance.
        :param replace: if `True`, packages in the set with the same name will
            be removed first.
        """
        if isinstance(elem, text_type):
            elem = Requirement.coerce(elem)
        if replace and elem in self:
            self.remove(elem)
        super(Requirements, self).add(elem)
def test_initial_object_with_valid_arguments_has_correct_properties(self):
        community_contribution_stats = (
            suggestion_registry.CommunityContributionStats(
                self.translation_reviewer_counts_by_lang_code,
                self.translation_suggestion_counts_by_lang_code,
                self.question_reviewer_count,
                self.question_suggestion_count
            )
        )
        community_contribution_stats.validate()

        self.assertEqual(
            (
                community_contribution_stats
                .translation_reviewer_counts_by_lang_code
            ),
            self.translation_reviewer_counts_by_lang_code)
        self.assertEqual(
            (
                community_contribution_stats
                .translation_suggestion_counts_by_lang_code
            ),
            self.translation_suggestion_counts_by_lang_code
        )
        self.assertEqual(
            community_contribution_stats.question_reviewer_count,
            self.question_reviewer_count
        )
        self.assertEqual(
            community_contribution_stats.question_suggestion_count,
            self.question_suggestion_count
        )