cppzmq/tests/recv_multipart.cpp

#include <catch2/catch_all.hpp>
#include <zmq_addon.hpp>
#ifdef ZMQ_CPP11

TEST_CASE("recv_multipart test", "[recv_multipart]")
{
    zmq::context_t context(1);
    zmq::socket_t output(context, ZMQ_PAIR);
    zmq::socket_t input(context, ZMQ_PAIR);
    output.bind("inproc://multipart.test");
    input.connect("inproc://multipart.test");

    SECTION("send 1 message") {
        input.send(zmq::str_buffer("hello"));

        std::vector<zmq::message_t> msgs;
        auto ret = zmq::recv_multipart(output, std::back_inserter(msgs));
        REQUIRE(ret);
        CHECK(*ret == 1);
        REQUIRE(msgs.size() == 1);
        CHECK(msgs[0].size() == 5);
    }
    SECTION("send 2 messages") {
        input.send(zmq::str_buffer("hello"), zmq::send_flags::sndmore);
        input.send(zmq::str_buffer("world!"));

        std::vector<zmq::message_t> msgs;
        auto ret = zmq::recv_multipart(output, std::back_inserter(msgs));
        REQUIRE(ret);
        CHECK(*ret == 2);
        REQUIRE(msgs.size() == 2);
        CHECK(msgs[0].size() == 5);
        CHECK(msgs[1].size() == 6);
    }
    SECTION("send no messages, dontwait") {
        std::vector<zmq::message_t> msgs;
        auto ret = zmq::recv_multipart(output, std::back_inserter(msgs),
                                       zmq::recv_flags::dontwait);
        CHECK_FALSE(ret);
        REQUIRE(msgs.size() == 0);
    }
    SECTION("send 1 partial message, dontwait") {
        input.send(zmq::str_buffer("hello"), zmq::send_flags::sndmore);

        std::vector<zmq::message_t> msgs;
        auto ret = zmq::recv_multipart(output, std::back_inserter(msgs),
                                       zmq::recv_flags::dontwait);
        CHECK_FALSE(ret);
        REQUIRE(msgs.size() == 0);
    }
    SECTION("recv with invalid socket") {
        std::vector<zmq::message_t> msgs;
        CHECK_THROWS_AS(
            zmq::recv_multipart(zmq::socket_ref(), std::back_inserter(msgs)),
            zmq::error_t);
    }
}

TEST_CASE("recv_multipart_n test", "[recv_multipart]")
{
    zmq::context_t context(1);
    zmq::socket_t output(context, ZMQ_PAIR);
    zmq::socket_t input(context, ZMQ_PAIR);
    output.bind("inproc://multipart.test");
    input.connect("inproc://multipart.test");

    SECTION("send 1 message") {
        input.send(zmq::str_buffer("hello"));

        std::array<zmq::message_t, 1> msgs;
        auto ret = zmq::recv_multipart_n(output, msgs.data(), msgs.size());
        REQUIRE(ret);
        CHECK(*ret == 1);
        CHECK(msgs[0].size() == 5);
    }
    SECTION("send 1 message 2") {
        input.send(zmq::str_buffer("hello"));

        std::array<zmq::message_t, 2> msgs;
        auto ret = zmq::recv_multipart_n(output, msgs.data(), msgs.size());
        REQUIRE(ret);
        CHECK(*ret == 1);
        CHECK(msgs[0].size() == 5);
        CHECK(msgs[1].size() == 0);
    }
    SECTION("send 2 messages, recv 1") {
        input.send(zmq::str_buffer("hello"), zmq::send_flags::sndmore);
        input.send(zmq::str_buffer("world!"));

        std::array<zmq::message_t, 1> msgs;
        CHECK_THROWS_AS(
            zmq::recv_multipart_n(output, msgs.data(), msgs.size()),
            std::runtime_error);
    }
    SECTION("recv 0") {
        input.send(zmq::str_buffer("hello"), zmq::send_flags::sndmore);
        input.send(zmq::str_buffer("world!"));

        std::array<zmq::message_t, 1> msgs;
        CHECK_THROWS_AS(
            zmq::recv_multipart_n(output, msgs.data(), 0),
            std::runtime_error);
    }
    SECTION("send 2 messages") {
        input.send(zmq::str_buffer("hello"), zmq::send_flags::sndmore);
        input.send(zmq::str_buffer("world!"));

        std::array<zmq::message_t, 2> msgs;
        auto ret = zmq::recv_multipart_n(output, msgs.data(), msgs.size());
        REQUIRE(ret);
        CHECK(*ret == 2);
        CHECK(msgs[0].size() == 5);
        CHECK(msgs[1].size() == 6);
    }
    SECTION("send no messages, dontwait") {
        std::array<zmq::message_t, 1> msgs;
        auto ret = zmq::recv_multipart_n(output, msgs.data(), msgs.size(),
                                         zmq::recv_flags::dontwait);
        CHECK_FALSE(ret);
        REQUIRE(msgs[0].size() == 0);
    }
    SECTION("send 1 partial message, dontwait") {
        input.send(zmq::str_buffer("hello"), zmq::send_flags::sndmore);

        std::array<zmq::message_t, 1> msgs;
        auto ret = zmq::recv_multipart_n(output, msgs.data(), msgs.size(),
                                         zmq::recv_flags::dontwait);
        CHECK_FALSE(ret);
        REQUIRE(msgs[0].size() == 0);
    }
    SECTION("recv with invalid socket") {
        std::array<zmq::message_t, 1> msgs;
        CHECK_THROWS_AS(
            zmq::recv_multipart_n(zmq::socket_ref(), msgs.data(), msgs.size()),
            zmq::error_t);
    }
}

#endif