test_defaults.py

# Copyright 2017 Amazon.com, Inc. or its affiliates. All Rights Reserved.
#
# Licensed under the Apache License, Version 2.0 (the "License"). You
# may not use this file except in compliance with the License. A copy of
# the License is located at
#
# http://aws.amazon.com/apache2.0/
#
# or in the "license" file accompanying this file. This file is
# distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF
# ANY KIND, either express or implied. See the License for the specific
# language governing permissions and limitations under the License.
"""Test suite to verify calculated values in aws_encryption_sdk.internal.defaults"""
import pytest

import aws_encryption_sdk.internal.defaults

pytestmark = [pytest.mark.unit, pytest.mark.local]


class TestDefaults(object):
    def test_max_frame_count(self):
        max_frame_count = pow(2, 32) - 1
        assert aws_encryption_sdk.internal.defaults.MAX_FRAME_COUNT == max_frame_count

    def test_max_frame_size(self):
        max_frame_size = pow(2, 31) - 1
        assert aws_encryption_sdk.internal.defaults.MAX_FRAME_SIZE == max_frame_size

    def test_max_non_framed_size(self):
        max_non_framed_size = pow(2, 36) - 32
        assert aws_encryption_sdk.internal.defaults.MAX_NON_FRAMED_SIZE == max_non_framed_size

    def test_max_byte_array_size(self):
        max_byte_array_size = pow(2, 16) - 1
        assert aws_encryption_sdk.internal.defaults.MAX_BYTE_ARRAY_SIZE == max_byte_array_size