MXS-1743: Add test case

Added test case that reproduces the problem.

maxscale-system-test/CMakeLists.txt

@@ -621,6 +621,10 @@ add_test_executable(mxs1713_lots_of_databases.cpp mxs1713_lots_of_databases mxs1
 # https://jira.mariadb.org/browse/MXS-1731
 add_test_executable(mxs1731_old_persisted_config.cpp mxs1731_old_persisted_config replication LABELS REPL_BACKEND)
 
+# MXS-1743: Maxscale unable to enforce round-robin between read service for Slave
+# https://jira.mariadb.org/browse/MXS-1743
+add_test_executable(mxs1743_rconn_bitmask.cpp mxs1743_rconn_bitmask mxs1743_rconn_bitmask LABELS REPL_BACKEND)
+
 # MXS-1751: Maxscale crashes when certain config is in play (with nodes down)
 # https://jira.mariadb.org/browse/MXS-1751
 add_test_executable(mxs1751_available_when_donor_crash.cpp mxs1751_available_when_donor_crash mxs1751_available_when_donor_crash LABELS GALERA_BACKEND)

maxscale-system-test/cnf/maxscale.cnf.template.mxs1743_rconn_bitmask

@@ -0,0 +1,47 @@
+[maxscale]
+threads=###threads###
+
+[MySQL Monitor]
+type=monitor
+module=mysqlmon
+###repl51###
+servers=server1,server2
+user=maxskysql
+passwd=skysql
+monitor_interval=1000
+
+[Read Connection Router Master]
+type=service
+router=readconnroute
+router_options=master,slave
+servers=server1,server2
+user=maxskysql
+passwd=skysql
+
+[Read Connection Listener Master]
+type=listener
+service=Read Connection Router Master
+protocol=MySQLClient
+port=4008
+
+[CLI]
+type=service
+router=cli
+
+[CLI Listener]
+type=listener
+service=CLI
+protocol=maxscaled
+socket=default
+
+[server1]
+type=server
+address=###node_server_IP_1###
+port=###node_server_port_1###
+protocol=MySQLBackend
+
+[server2]
+type=server
+address=###node_server_IP_2###
+port=###node_server_port_2###
+protocol=MySQLBackend

maxscale-system-test/mxs1743_rconn_bitmask.cpp

@@ -0,0 +1,36 @@
+/**
+ * MXS-1743: Maxscale unable to enforce round-robin between read service for Slave
+ *
+ * https://jira.mariadb.org/browse/MXS-1743
+ */
+#include "testconnections.h"
+
+int main(int argc, char** argv)
+{
+    TestConnections test(argc, argv);
+
+
+    test.tprintf("Testing with both master and slave up");
+    test.maxscales->connect();
+    test.try_query(test.maxscales->conn_master[0], "SELECT 1");
+    test.maxscales->disconnect();
+
+    test.tprintf("Testing with only the master");
+    test.repl->block_node(0);
+    sleep(5);
+    test.maxscales->connect();
+    test.try_query(test.maxscales->conn_master[0], "SELECT 1");
+    test.maxscales->disconnect();
+    test.repl->unblock_node(0);
+    sleep(5);
+
+    test.tprintf("Testing with only the slave");
+    test.repl->block_node(1);
+    sleep(5);
+    test.maxscales->connect();
+    test.try_query(test.maxscales->conn_master[0], "SELECT 1");
+    test.maxscales->disconnect();
+    test.repl->unblock_node(1);
+
+    return test.global_result;
+}