memgraph/tests/unit/chunked_encoder.cpp

115 lines
2.5 KiB
C++

#include <cassert>
#include <deque>
#include <iostream>
#include <vector>
#include "communication/bolt/v1/transport/chunked_encoder.hpp"
#include "logging/default.hpp"
#include "logging/streams/stdout.hpp"
using byte = unsigned char;
void print_hex(byte x) { printf("%02X ", static_cast<byte>(x)); }
class DummyStream
{
public:
void write(const byte *values, size_t n)
{
num_calls++;
data.insert(data.end(), values, values + n);
}
byte pop()
{
auto c = data.front();
data.pop_front();
return c;
}
size_t pop_size() { return ((size_t)pop() << 8) | pop(); }
void print()
{
for (size_t i = 0; i < data.size(); ++i)
print_hex(data[i]);
}
std::deque<byte> data;
size_t num_calls{0};
};
using Encoder = bolt::ChunkedEncoder<DummyStream>;
void write_ff(Encoder &encoder, size_t n)
{
std::vector<byte> v;
for (size_t i = 0; i < n; ++i)
v.push_back('\xFF');
encoder.write(v.data(), v.size());
}
void check_ff(DummyStream &stream, size_t n)
{
for (size_t i = 0; i < n; ++i)
assert(stream.pop() == byte('\xFF'));
(void)stream;
}
int main(void)
{
// TODO: write new test
// logging::init_async();
// logging::log->pipe(std::make_unique<Stdout>());
// DummyStream stream;
// bolt::ChunkedEncoder<DummyStream> encoder(stream);
// write_ff(encoder, 10);
// write_ff(encoder, 10);
// encoder.flush();
// write_ff(encoder, 10);
// write_ff(encoder, 10);
// encoder.flush();
// // this should be two chunks, one of size 65533 and the other of size 1467
// write_ff(encoder, 67000);
// encoder.flush();
// for (int i = 0; i < 10000; ++i)
// write_ff(encoder, 1500);
// encoder.flush();
// assert(stream.pop_size() == 20);
// check_ff(stream, 20);
// assert(stream.pop_size() == 0);
// assert(stream.pop_size() == 20);
// check_ff(stream, 20);
// assert(stream.pop_size() == 0);
// assert(stream.pop_size() == encoder.chunk_size);
// check_ff(stream, encoder.chunk_size);
// assert(stream.pop_size() == 1467);
// check_ff(stream, 1467);
// assert(stream.pop_size() == 0);
// size_t k = 10000 * 1500;
// while (k > 0) {
// auto size = k > encoder.chunk_size ? encoder.chunk_size : k;
// assert(stream.pop_size() == size);
// check_ff(stream, size);
// k -= size;
// }
// assert(stream.pop_size() == 0);
return 0;
}