test_client.py

# Copyright 2018 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.
"""Functional tests for ``dynamodb_encryption_sdk.encrypted.client``."""
import boto3
import hypothesis
import pytest

from dynamodb_encryption_sdk.encrypted.client import EncryptedClient
from dynamodb_encryption_sdk.internal.formatting.transform import ddb_to_dict, dict_to_ddb
from ..functional_test_utils import (
    check_encrypted_item, cycle_batch_item_check, set_parametrized_actions, set_parametrized_cmp,
    set_parametrized_item, TEST_KEY, TEST_TABLE_NAME
)
from ..functional_test_utils import example_table  # noqa pylint: disable=unused-import
from ..hypothesis_strategies import ddb_items, SLOW_SETTINGS, VERY_SLOW_SETTINGS

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


def pytest_generate_tests(metafunc):
    set_parametrized_actions(metafunc)
    set_parametrized_cmp(metafunc)
    set_parametrized_item(metafunc)


def _client_cycle_single_item_check(materials_provider, initial_actions, initial_item):
    check_attribute_actions = initial_actions.copy()
    check_attribute_actions.set_index_keys(*list(TEST_KEY.keys()))
    item = initial_item.copy()
    item.update(TEST_KEY)
    ddb_item = dict_to_ddb(item)
    ddb_key = dict_to_ddb(TEST_KEY)

    client = boto3.client('dynamodb', region_name='us-west-2')
    e_client = EncryptedClient(
        client=client,
        materials_provider=materials_provider,
        attribute_actions=initial_actions
    )

    _put_result = e_client.put_item(  # noqa
        TableName=TEST_TABLE_NAME,
        Item=ddb_item
    )

    encrypted_result = client.get_item(
        TableName=TEST_TABLE_NAME,
        Key=ddb_key
    )
    check_encrypted_item(item, ddb_to_dict(encrypted_result['Item']), check_attribute_actions)

    decrypted_result = e_client.get_item(
        TableName=TEST_TABLE_NAME,
        Key=ddb_key
    )
    assert ddb_to_dict(decrypted_result['Item']) == item

    e_client.delete_item(
        TableName=TEST_TABLE_NAME,
        Key=ddb_key
    )
    del item
    del check_attribute_actions


def _client_cycle_batch_items_check(materials_provider, initial_actions, initial_item):
    client = boto3.client('dynamodb', region_name='us-west-2')
    e_client = EncryptedClient(
        client=client,
        materials_provider=materials_provider,
        attribute_actions=initial_actions
    )

    cycle_batch_item_check(
        raw=client,
        encrypted=e_client,
        initial_actions=initial_actions,
        initial_item=initial_item,
        write_transformer=dict_to_ddb,
        read_transformer=ddb_to_dict
    )

    raw_scan_result = client.scan(TableName=TEST_TABLE_NAME)
    e_scan_result = e_client.scan(TableName=TEST_TABLE_NAME)
    assert not raw_scan_result['Items']
    assert not e_scan_result['Items']


def test_ephemeral_item_cycle(example_table, some_cmps, parametrized_actions, parametrized_item):
    """Test a small number of curated CMPs against a small number of curated items."""
    _client_cycle_single_item_check(some_cmps, parametrized_actions, parametrized_item)


def test_ephemeral_batch_item_cycle(example_table, some_cmps, parametrized_actions, parametrized_item):
    """Test a small number of curated CMPs against a small number of curated items."""
    _client_cycle_batch_items_check(some_cmps, parametrized_actions, parametrized_item)


@pytest.mark.slow
def test_ephemeral_item_cycle_slow(example_table, all_the_cmps, parametrized_actions, parametrized_item):
    """Test ALL THE CMPS against a small number of curated items."""
    _client_cycle_single_item_check(all_the_cmps, parametrized_actions, parametrized_item)


@pytest.mark.slow
def test_ephemeral_batch_item_cycle_slow(example_table, all_the_cmps, parametrized_actions, parametrized_item):
    """Test ALL THE CMPS against a small number of curated items."""
    _client_cycle_batch_items_check(all_the_cmps, parametrized_actions, parametrized_item)


@pytest.mark.slow
@pytest.mark.hypothesis
@SLOW_SETTINGS
@hypothesis.given(item=ddb_items)
def test_ephemeral_item_cycle_hypothesis_slow(example_table, some_cmps, hypothesis_actions, item):
    """Test a small number of curated CMPs against a large number of items."""
    _client_cycle_single_item_check(some_cmps, hypothesis_actions, item)


@pytest.mark.veryslow
@pytest.mark.hypothesis
@VERY_SLOW_SETTINGS
@hypothesis.given(item=ddb_items)
def test_ephemeral_item_cycle_hypothesis_veryslow(example_table, some_cmps, hypothesis_actions, item):
    """Test a small number of curated CMPs against ALL THE ITEMS."""
    _client_cycle_single_item_check(some_cmps, hypothesis_actions, item)


@pytest.mark.nope
@pytest.mark.hypothesis
@VERY_SLOW_SETTINGS
@hypothesis.given(item=ddb_items)
def test_ephemeral_item_cycle_hypothesis_nope(example_table, all_the_cmps, hypothesis_actions, item):
    """Test ALL THE CMPs against ALL THE ITEMS."""
    _client_cycle_single_item_check(all_the_cmps, hypothesis_actions, item)