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#include <gtest/gtest.h>
#include "cpp-utils/crypto/symmetric/testutils/FakeAuthenticatedCipher.h"
#include "blockstore/implementations/encrypted/EncryptedBlockStore2.h"
#include "blockstore/implementations/inmemory/InMemoryBlockStore2.h"
#include "blockstore/utils/BlockStoreUtils.h"
#include "../../testutils/gtest_printers.h"
#include <cpp-utils/data/DataFixture.h>
#include <cstddef>
using ::testing::Test;
using cpputils::DataFixture;
using cpputils::Data;
using cpputils::unique_ref;
using cpputils::make_unique_ref;
using cpputils::FakeAuthenticatedCipher;
using blockstore::inmemory::InMemoryBlockStore2;
using namespace blockstore::encrypted;
class EncryptedBlockStoreTest: public Test {
public:
static constexpr unsigned int BLOCKSIZE = 1024;
EncryptedBlockStoreTest():
baseBlockStore(new InMemoryBlockStore2),
blockStore(make_unique_ref<EncryptedBlockStore2<FakeAuthenticatedCipher>>(std::move(cpputils::nullcheck(std::unique_ptr<InMemoryBlockStore2>(baseBlockStore)).value()), FakeAuthenticatedCipher::Key1())),
data(DataFixture::generate(BLOCKSIZE)) {
}
InMemoryBlockStore2 *baseBlockStore;
unique_ref<EncryptedBlockStore2<FakeAuthenticatedCipher>> blockStore;
Data data;
blockstore::BlockId CreateBlockDirectlyWithFixtureAndReturnKey() {
return CreateBlockReturnKey(data);
}
blockstore::BlockId CreateBlockReturnKey(const Data &initData) {
return blockStore->create(initData.copy());
}
blockstore::BlockId CreateBlockWriteFixtureToItAndReturnKey() {
auto blockId = blockStore->create(Data(data.size()));
blockStore->store(blockId, data);
return blockId;
}
void ModifyBaseBlock(const blockstore::BlockId &blockId) {
auto block = baseBlockStore->load(blockId).value();
CryptoPP::byte* middle_byte = static_cast<CryptoPP::byte*>(block.data()) + 10;
*middle_byte = *middle_byte + 1;
baseBlockStore->store(blockId, block);
}
blockstore::BlockId CopyBaseBlock(const blockstore::BlockId &blockId) {
auto source = baseBlockStore->load(blockId).value();
return baseBlockStore->create(source);
}
private:
DISALLOW_COPY_AND_ASSIGN(EncryptedBlockStoreTest);
};
TEST_F(EncryptedBlockStoreTest, LoadingWithSameKeyWorks_WriteOnCreate) {
auto blockId = CreateBlockDirectlyWithFixtureAndReturnKey();
auto loaded = blockStore->load(blockId);
EXPECT_NE(boost::none, loaded);
EXPECT_EQ(data.size(), loaded->size());
EXPECT_EQ(0, std::memcmp(data.data(), loaded->data(), data.size()));
}
TEST_F(EncryptedBlockStoreTest, LoadingWithSameKeyWorks_WriteSeparately) {
auto blockId = CreateBlockWriteFixtureToItAndReturnKey();
auto loaded = blockStore->load(blockId);
EXPECT_NE(boost::none, loaded);
EXPECT_EQ(data.size(), loaded->size());
EXPECT_EQ(0, std::memcmp(data.data(), loaded->data(), data.size()));
}
TEST_F(EncryptedBlockStoreTest, LoadingWithDifferentKeyDoesntWork_WriteOnCreate) {
auto blockId = CreateBlockDirectlyWithFixtureAndReturnKey();
blockStore->_setKey(FakeAuthenticatedCipher::Key2());
auto loaded = blockStore->load(blockId);
EXPECT_EQ(boost::none, loaded);
}
TEST_F(EncryptedBlockStoreTest, LoadingWithDifferentKeyDoesntWork_WriteSeparately) {
auto blockId = CreateBlockWriteFixtureToItAndReturnKey();
blockStore->_setKey(FakeAuthenticatedCipher::Key2());
auto loaded = blockStore->load(blockId);
EXPECT_EQ(boost::none, loaded);
}
TEST_F(EncryptedBlockStoreTest, LoadingModifiedBlockFails_WriteOnCreate) {
auto blockId = CreateBlockDirectlyWithFixtureAndReturnKey();
ModifyBaseBlock(blockId);
auto loaded = blockStore->load(blockId);
EXPECT_EQ(boost::none, loaded);
}
TEST_F(EncryptedBlockStoreTest, LoadingModifiedBlockFails_WriteSeparately) {
auto blockId = CreateBlockWriteFixtureToItAndReturnKey();
ModifyBaseBlock(blockId);
auto loaded = blockStore->load(blockId);
EXPECT_EQ(boost::none, loaded);
}
TEST_F(EncryptedBlockStoreTest, PhysicalBlockSize_zerophysical) {
EXPECT_EQ(0u, blockStore->blockSizeFromPhysicalBlockSize(0));
}
TEST_F(EncryptedBlockStoreTest, PhysicalBlockSize_zerovirtual) {
auto blockId = CreateBlockReturnKey(Data(0));
auto base = baseBlockStore->load(blockId).value();
EXPECT_EQ(0u, blockStore->blockSizeFromPhysicalBlockSize(base.size()));
}
TEST_F(EncryptedBlockStoreTest, PhysicalBlockSize_negativeboundaries) {
// This tests that a potential if/else in blockSizeFromPhysicalBlockSize that catches negative values has the
// correct boundary set. We test the highest value that is negative and the smallest value that is positive.
auto physicalSizeForVirtualSizeZero = baseBlockStore->load(CreateBlockReturnKey(Data(0))).value().size();
if (physicalSizeForVirtualSizeZero > 0) {
EXPECT_EQ(0u, blockStore->blockSizeFromPhysicalBlockSize(physicalSizeForVirtualSizeZero - 1));
}
EXPECT_EQ(0u, blockStore->blockSizeFromPhysicalBlockSize(physicalSizeForVirtualSizeZero));
EXPECT_EQ(1u, blockStore->blockSizeFromPhysicalBlockSize(physicalSizeForVirtualSizeZero + 1));
}
TEST_F(EncryptedBlockStoreTest, PhysicalBlockSize_positive) {
auto blockId = CreateBlockReturnKey(Data(10*1024));
auto base = baseBlockStore->load(blockId).value();
EXPECT_EQ(10*1024u, blockStore->blockSizeFromPhysicalBlockSize(base.size()));
}
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