Function IpcPipeTest

src/ipc/test/ipc_test.cpp:60–117

Unit test that tests execution of IPC calls without actually creating a separate process. This test is primarily intended to verify behavior of type conversion code that converts C++ objects to Cap'n Proto messages and vice versa. The test creates a thread which creates a FooImplementation object (defined in ipc_test.h) and a two-way pipe accepting IPC requests which call methods on the object th

//! in ipc_test.h) and a two-way pipe accepting IPC requests which call methods
//! on the object through FooInterface (defined in ipc_test.capnp).
void IpcPipeTest()
{
    // Setup: create FooImplementation object and listen for FooInterface requests
    std::promise<std::unique_ptr<mp::ProxyClient<gen::FooInterface>>> foo_promise;
    std::thread thread([&]() {
        mp::EventLoop loop("IpcPipeTest", [](bool raise, const std::string& log) { LogInfo("LOG%i: %s", raise, log); });
        auto pipe = loop.m_io_context.provider->newTwoWayPipe();

        auto connection_client = std::make_unique<mp::Connection>(loop, kj::mv(pipe.ends[0]));
        auto foo_client = std::make_unique<mp::ProxyClient<gen::FooInterface>>(
            connection_client->m_rpc_system->bootstrap(mp::ServerVatId().vat_id).castAs<gen::FooInterface>(),
            connection_client.get(), /* destroy_connection= */ true);
        (void)connection_client.release();
        foo_promise.set_value(std::move(foo_client));

        auto connection_server = std::make_unique<mp::Connection>(loop, kj::mv(pipe.ends[1]), [&](mp::Connection& connection) {
            auto foo_server = kj::heap<mp::ProxyServer<gen::FooInterface>>(std::make_shared<FooImplementation>(), connection);
            return capnp::Capability::Client(kj::mv(foo_server));
        });
        connection_server->onDisconnect([&] { connection_server.reset(); });
        loop.loop();
    });
    std::unique_ptr<mp::ProxyClient<gen::FooInterface>> foo{foo_promise.get_future().get()};

    // Test: make sure arguments were sent and return value is received
    BOOST_CHECK_EQUAL(foo->add(1, 2), 3);

    COutPoint txout1{Txid::FromUint256(uint256{100}), 200};
    COutPoint txout2{foo->passOutPoint(txout1)};
    BOOST_CHECK(txout1 == txout2);

    UniValue uni1{UniValue::VOBJ};
    uni1.pushKV("i", 1);
    uni1.pushKV("s", "two");
    UniValue uni2{foo->passUniValue(uni1)};
    BOOST_CHECK_EQUAL(uni1.write(), uni2.write());

    CMutableTransaction mtx;
    mtx.version = 2;
    mtx.nLockTime = 3;
    mtx.vin.emplace_back(txout1);
    mtx.vout.emplace_back(COIN, CScript());
    CTransactionRef tx1{MakeTransactionRef(mtx)};
    CTransactionRef tx2{foo->passTransaction(tx1)};
    BOOST_CHECK(*Assert(tx1) == *Assert(tx2));

    std::vector<char> vec1{'H', 'e', 'l', 'l', 'o'};
    std::vector<char> vec2{foo->passVectorChar(vec1)};
    BOOST_CHECK_EQUAL(std::string_view(vec1.begin(), vec1.end()), std::string_view(vec2.begin(), vec2.end()));

    auto script1{CScript() << OP_11};
    auto script2{foo->passScript(script1)};
    BOOST_CHECK_EQUAL(HexStr(script1), HexStr(script2));

    // Test cleanup: disconnect and join thread
    foo.reset();
    thread.join();
}