Function tryShrink

cmd/cql-fuse/block_test.go:373–408

(db *sql.DB, data []byte, id, newSize uint64)

}

func tryShrink(db *sql.DB, data []byte, id, newSize uint64) ([]byte, error) {
	originalSize := uint64(len(data))
	data = data[:newSize]
	if err := shrink(db, id, originalSize, newSize); err != nil {
		return nil, err
	}
	newData, err := getAllBlocks(db, id)
	if err != nil {
		return nil, err
	}
	if uint64(len(newData)) != newSize {
		return nil, fmt.Errorf("getAllData lengths don't match: got %d, expected %d", len(newData), newSize)
	}
	if !bytes.Equal(data, newData) {
		return nil, fmt.Errorf("getAllData data doesn't match")
	}

	if newSize == 0 {
		return newData, nil
	}

	// Check the read as well.
	newData, err = read(db, id, 0, newSize)
	if err != nil {
		return nil, err
	}

	if uint64(len(newData)) != newSize {
		return nil, fmt.Errorf("read lengths don't match: got %d, expected %d", len(newData), newSize)
	}
	if !bytes.Equal(data, newData) {
		return nil, fmt.Errorf("read data doesn't match")
	}

	return newData, nil
}

func TestShrinkGrow(t *testing.T) {