    def test_command_downloadS3_absolute_path(self):
        """
        target: test command 'downloadS3' absolute path
        method: use downloadS3 to download files in S3 absolute path with bucket_name
        expected: get error message
        """
        res = os.popen("towhee downloadS3 -pl ./ -pb s3://pretrainedweights.towhee.io/test/test.pt").read()
        assert "not exist" in res
        return True
target: test command 'downloadS3' absolute path
method: use downloadS3 to download files in S3 absolute path with bucket_name
expected: get error message
tests/testcases/test_command.py