test the client socket can drop multi frame messages that being sent to it

Makefile.am

@@ -344,7 +344,8 @@ test_apps = \
 	tests/test_xpub_welcome_msg \
 	tests/test_atomics \
 	tests/test_client_server \
-	tests/test_server_drop_more
+	tests/test_server_drop_more \
+	tests/test_client_drop_more
 
 tests_test_system_SOURCES = tests/test_system.cpp
 tests_test_system_LDADD = src/libzmq.la
@@ -522,6 +523,9 @@ tests_test_client_server_LDADD = src/libzmq.la
 tests_test_server_drop_more_SOURCES = tests/test_server_drop_more.cpp
 tests_test_server_drop_more_LDADD = src/libzmq.la
 
+tests_test_client_drop_more_SOURCES = tests/test_client_drop_more.cpp
+tests_test_client_drop_more_LDADD = src/libzmq.la
+
 if !ON_MINGW
 if !ON_CYGWIN
 test_apps += \

tests/test_client_drop_more.cpp

@@ -0,0 +1,106 @@
+/*
+    Copyright (c) 2007-2015 Contributors as noted in the AUTHORS file
+
+    This file is part of 0MQ.
+
+    0MQ is free software; you can redistribute it and/or modify it under
+    the terms of the GNU Lesser General Public License as published by
+    the Free Software Foundation; either version 3 of the License, or
+    (at your option) any later version.
+
+    0MQ is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU Lesser General Public License for more details.
+
+    You should have received a copy of the GNU Lesser General Public License
+    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+*/
+
+#include "testutil.hpp"
+
+int send_msg(zmq_msg_t* msg, void* s, int flags, int value);
+
+int main (void)
+{
+    setup_test_environment();
+    void *ctx = zmq_ctx_new ();
+    assert (ctx);
+
+    void *client = zmq_socket (ctx, ZMQ_CLIENT);
+    void *dealer = zmq_socket (ctx, ZMQ_DEALER);
+
+    int rc;
+
+    rc = zmq_bind (client, "inproc://serverdropmore");
+    assert (rc == 0);
+
+    rc = zmq_connect (dealer, "inproc://serverdropmore");
+    assert (rc == 0);
+
+    zmq_msg_t msg;
+    rc = zmq_msg_init (&msg);
+    assert (rc == 0);
+
+    // we will send 2 3-frames messages and then single frame message, only last one should be received
+    rc = send_msg (&msg, dealer, ZMQ_SNDMORE, 1);
+    assert(rc == 1);
+
+    rc = send_msg (&msg, dealer, ZMQ_SNDMORE, 2);
+    assert(rc == 1);
+
+    rc = send_msg (&msg, dealer, 0, 3);
+    assert(rc == 1);
+    
+    rc = send_msg (&msg, dealer, ZMQ_SNDMORE, 4);
+    assert(rc == 1);
+
+    rc = send_msg (&msg, dealer, ZMQ_SNDMORE, 5);
+    assert(rc == 1);
+    
+    rc = send_msg (&msg, dealer, 0, 6);
+    assert(rc == 1);
+
+    rc = send_msg (&msg, dealer, 0, 7);
+    assert(rc == 1);
+
+    rc = zmq_msg_recv (&msg, client, 0);
+    assert (rc == 1);  
+
+    assert(zmq_msg_more(&msg) == 0);
+
+    unsigned char* data = (unsigned char*)zmq_msg_data (&msg);      
+    assert (data[0] == 7);
+
+    rc = zmq_msg_close (&msg);
+    assert (rc == 0);
+
+    rc = zmq_close (client);
+    assert (rc == 0);
+
+    rc = zmq_close (dealer);
+    assert (rc == 0);
+
+    rc = zmq_ctx_term (ctx);
+    assert (rc == 0);
+
+    return 0 ;
+}
+
+int send_msg(zmq_msg_t* msg, void* s, int flags, int value)
+{
+    int rc = zmq_msg_close(msg);
+
+    if (rc != 0)
+        return rc;
+
+    zmq_msg_init_size(msg, 1);
+
+    if (rc != 0)
+        return rc;
+
+    unsigned char* data = (unsigned char*)zmq_msg_data(msg);
+    data[0] = (unsigned char)value;
+
+    return zmq_msg_send (msg, s, flags);
+}