136 lines
5.2 KiB
C++
136 lines
5.2 KiB
C++
#include <gtest/gtest.h>
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#include <messmer/blockstore/implementations/compressing/CompressingBlockStore.h>
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#include <messmer/blockstore/implementations/compressing/compressors/RunLengthEncoding.h>
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#include <messmer/blockstore/implementations/inmemory/InMemoryBlockStore.h>
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#include <messmer/blockstore/implementations/inmemory/InMemoryBlock.h>
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#include <messmer/cpp-utils/data/DataFixture.h>
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#include <messmer/cpp-utils/data/Data.h>
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#include "../../../implementations/onblocks/BlobStoreOnBlocks.h"
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#include "../../../implementations/onblocks/BlobOnBlocks.h"
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using namespace blobstore;
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using namespace blobstore::onblocks;
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using cpputils::unique_ref;
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using cpputils::make_unique_ref;
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using cpputils::DataFixture;
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using cpputils::Data;
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using blockstore::inmemory::InMemoryBlockStore;
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using blockstore::compressing::CompressingBlockStore;
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using blockstore::compressing::RunLengthEncoding;
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// Test cases, ensuring that big blobs (>4G) work (i.e. testing that we don't use any 32bit variables for blob size, etc.)
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class BigBlobsTest : public ::testing::Test {
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public:
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static constexpr size_t BLOCKSIZE = 32 * 1024;
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static constexpr uint64_t SMALL_BLOB_SIZE = UINT64_C(1024)*1024*1024*3.9; // 3.9 GB (<4GB)
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static constexpr uint64_t LARGE_BLOB_SIZE = UINT64_C(1024)*1024*1024*4.1; // 4.1 GB (>4GB)
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static constexpr uint64_t max_uint_32 = std::numeric_limits<uint32_t>::max();
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static_assert(SMALL_BLOB_SIZE < max_uint_32, "LARGE_BLOB_SIZE should need 64bit or the test case is mute");
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static_assert(LARGE_BLOB_SIZE > max_uint_32, "LARGE_BLOB_SIZE should need 64bit or the test case is mute");
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unique_ref<BlobStore> blobStore = make_unique_ref<BlobStoreOnBlocks>(make_unique_ref<CompressingBlockStore<RunLengthEncoding>>(make_unique_ref<InMemoryBlockStore>()), BLOCKSIZE);
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unique_ref<Blob> blob = blobStore->create();
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};
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constexpr size_t BigBlobsTest::BLOCKSIZE;
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constexpr uint64_t BigBlobsTest::SMALL_BLOB_SIZE;
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constexpr uint64_t BigBlobsTest::LARGE_BLOB_SIZE;
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TEST_F(BigBlobsTest, Resize) {
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//These operations are in one test case and not in many small ones, because it takes quite long to create a >4GB blob.
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//Resize to >4GB
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blob->resize(LARGE_BLOB_SIZE);
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EXPECT_EQ(LARGE_BLOB_SIZE, blob->size());
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//Grow while >4GB
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blob->resize(LARGE_BLOB_SIZE + 1024);
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EXPECT_EQ(LARGE_BLOB_SIZE + 1024, blob->size());
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//Shrink while >4GB
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blob->resize(LARGE_BLOB_SIZE);
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EXPECT_EQ(LARGE_BLOB_SIZE, blob->size());
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//Shrink to <4GB
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blob->resize(SMALL_BLOB_SIZE);
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EXPECT_EQ(SMALL_BLOB_SIZE, blob->size());
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//Grow to >4GB
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blob->resize(LARGE_BLOB_SIZE);
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EXPECT_EQ(LARGE_BLOB_SIZE, blob->size());
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//Flush >4GB blob
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blob->flush();
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//Destruct >4GB blob
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auto key = blob->key();
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cpputils::destruct(std::move(blob));
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//Load >4GB blob
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blob = blobStore->load(key).value();
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//Remove >4GB blob
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blobStore->remove(std::move(blob));
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}
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TEST_F(BigBlobsTest, GrowByWriting_Crossing4GBBorder) {
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Data fixture = DataFixture::generate(2*(LARGE_BLOB_SIZE-SMALL_BLOB_SIZE));
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blob->write(fixture.data(), SMALL_BLOB_SIZE, fixture.size());
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EXPECT_EQ(LARGE_BLOB_SIZE+(LARGE_BLOB_SIZE-SMALL_BLOB_SIZE), blob->size());
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Data loaded(fixture.size());
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blob->read(loaded.data(), SMALL_BLOB_SIZE, loaded.size());
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EXPECT_EQ(0, std::memcmp(loaded.data(), fixture.data(), loaded.size()));
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}
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TEST_F(BigBlobsTest, GrowByWriting_Outside4GBBorder_StartingSizeZero) {
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Data fixture = DataFixture::generate(1024);
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blob->write(fixture.data(), LARGE_BLOB_SIZE, fixture.size());
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EXPECT_EQ(LARGE_BLOB_SIZE+1024, blob->size());
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Data loaded(fixture.size());
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blob->read(loaded.data(), LARGE_BLOB_SIZE, loaded.size());
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EXPECT_EQ(0, std::memcmp(loaded.data(), fixture.data(), loaded.size()));
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}
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TEST_F(BigBlobsTest, GrowByWriting_Outside4GBBorder_StartingSizeOutside4GBBorder) {
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blob->resize(LARGE_BLOB_SIZE);
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Data fixture = DataFixture::generate(1024);
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blob->write(fixture.data(), LARGE_BLOB_SIZE+1024, fixture.size());
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EXPECT_EQ(LARGE_BLOB_SIZE+2048, blob->size());
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Data loaded(fixture.size());
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blob->read(loaded.data(), LARGE_BLOB_SIZE+1024, loaded.size());
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EXPECT_EQ(0, std::memcmp(loaded.data(), fixture.data(), loaded.size()));
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}
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TEST_F(BigBlobsTest, ReadWriteAfterGrown_Crossing4GBBorder) {
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blob->resize(LARGE_BLOB_SIZE+(LARGE_BLOB_SIZE-SMALL_BLOB_SIZE)+1024);
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Data fixture = DataFixture::generate(2*(LARGE_BLOB_SIZE-SMALL_BLOB_SIZE));
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blob->write(fixture.data(), SMALL_BLOB_SIZE, fixture.size());
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EXPECT_EQ(LARGE_BLOB_SIZE+(LARGE_BLOB_SIZE-SMALL_BLOB_SIZE)+1024, blob->size());
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Data loaded(fixture.size());
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blob->read(loaded.data(), SMALL_BLOB_SIZE, loaded.size());
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EXPECT_EQ(0, std::memcmp(loaded.data(), fixture.data(), loaded.size()));
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}
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TEST_F(BigBlobsTest, ReadWriteAfterGrown_Outside4GBBorder) {
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blob->resize(LARGE_BLOB_SIZE+2048);
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Data fixture = DataFixture::generate(1024);
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blob->write(fixture.data(), LARGE_BLOB_SIZE, fixture.size());
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EXPECT_EQ(LARGE_BLOB_SIZE+2048, blob->size());
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Data loaded(fixture.size());
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blob->read(loaded.data(), LARGE_BLOB_SIZE, loaded.size());
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EXPECT_EQ(0, std::memcmp(loaded.data(), fixture.data(), loaded.size()));
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}
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//TODO Test Blob::readAll (only on 64bit systems)
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