def load_pip_requirements(self, files_map=None, freeze=True):
        if files_map is None:
            files_map = self.default_pip_files
        for group, requirements_txt in files_map.items():
            path = Path(requirements_txt)
            if not path.exists() and group.lower() == "all" and freeze:
                cmd = envoy.run("pip freeze")
                self[group].loads(cmd.std_out)
            elif path.exists():
                self[group].load(path)
def test_validate_question_suggestion_count_fails_for_negative_count(self):
        community_contribution_stats = (
            suggestion_services.get_community_contribution_stats()
        )
        community_contribution_stats.question_suggestion_count = (
            self.negative_count
        )

        with self.assertRaisesRegex(
            utils.ValidationError,
            'Expected the question suggestion count to be non-negative, '
            'received: %s.' % (
                community_contribution_stats.question_suggestion_count)
        ):
            community_contribution_stats.validate()