libcryfs/test/implementations/onblocks/BlobSizeTest.cpp

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#include "testutils/BlobStoreTest.h"
using std::unique_ptr;
using namespace blobstore;
using blockstore::Key;
class BlobSizeTest: public BlobStoreTest {
public:
BlobSizeTest(): blob(blobStore->create()) {}
static constexpr uint32_t LARGE_SIZE = 10 * 1024 * 1024;
unique_ptr<Blob> blob;
};
constexpr uint32_t BlobSizeTest::LARGE_SIZE;
TEST_F(BlobSizeTest, CreatedBlobIsEmpty) {
EXPECT_EQ(0, blob->size());
}
TEST_F(BlobSizeTest, Growing_1Byte) {
blob->resize(1);
EXPECT_EQ(1, blob->size());
}
TEST_F(BlobSizeTest, Growing_Large) {
blob->resize(LARGE_SIZE);
EXPECT_EQ(LARGE_SIZE, blob->size());
}
TEST_F(BlobSizeTest, Shrinking_Empty) {
blob->resize(LARGE_SIZE);
blob->resize(0);
EXPECT_EQ(0, blob->size());
}
TEST_F(BlobSizeTest, Shrinking_1Byte) {
blob->resize(LARGE_SIZE);
blob->resize(1);
EXPECT_EQ(1, blob->size());
}
TEST_F(BlobSizeTest, ResizingToItself_Empty) {
blob->resize(0);
EXPECT_EQ(0, blob->size());
}
TEST_F(BlobSizeTest, ResizingToItself_1Byte) {
blob->resize(1);
blob->resize(1);
EXPECT_EQ(1, blob->size());
}
TEST_F(BlobSizeTest, ResizingToItself_Large) {
blob->resize(LARGE_SIZE);
blob->resize(LARGE_SIZE);
EXPECT_EQ(LARGE_SIZE, blob->size());
}
TEST_F(BlobSizeTest, EmptyBlobStaysEmptyWhenLoading) {
Key key = blob->key();
blob.reset();
auto loaded = blobStore->load(key);
EXPECT_EQ(0, loaded->size());
}
TEST_F(BlobSizeTest, BlobSizeStaysIntactWhenLoading) {
blob->resize(LARGE_SIZE);
Key key = blob->key();
blob.reset();
auto loaded = blobStore->load(key);
EXPECT_EQ(LARGE_SIZE, loaded->size());
}
TEST_F(BlobSizeTest, WritingAtEndOfBlobGrowsBlob_Empty) {
int value;
blob->write(&value, 0, 4);
EXPECT_EQ(4, blob->size());
}
TEST_F(BlobSizeTest, WritingAfterEndOfBlobGrowsBlob_Empty) {
int value;
blob->write(&value, 2, 4);
EXPECT_EQ(6, blob->size());
}
TEST_F(BlobSizeTest, WritingOverEndOfBlobGrowsBlob_NonEmpty) {
blob->resize(1);
int value;
blob->write(&value, 0, 4);
EXPECT_EQ(4, blob->size());
}
TEST_F(BlobSizeTest, WritingAtEndOfBlobGrowsBlob_NonEmpty) {
blob->resize(1);
int value;
blob->write(&value, 1, 4);
EXPECT_EQ(5, blob->size());
}
TEST_F(BlobSizeTest, WritingAfterEndOfBlobGrowsBlob_NonEmpty) {
blob->resize(1);
int value;
blob->write(&value, 2, 4);
EXPECT_EQ(6, blob->size());
}