Add tests from develop

Added tests from develop. The test results need to be modified for 2.0.

maxscale-system-test/slave_failover.cpp

@@ -0,0 +1,74 @@
+/**
+ * @file slave_failover.cpp  Check how Maxscale works in case of one slave failure, only one slave is configured
+ *
+ * - Connect to RWSplit
+ * - find which backend slave is used for connection
+ * - blocm mariadb on the slave with firewall
+ * - wait 60 seconds
+ * - check which slave is used for connection now, expecting any other slave
+ * - check warning in the error log about broken slave
+ * - unblock mariadb backend (restore slave firewall settings)
+ * - check if Maxscale still alive
+ */
+
+
+#include "testconnections.h"
+
+int main(int argc, char *argv[])
+{
+    TestConnections * Test = new TestConnections(argc, argv);
+    Test->set_timeout(20);
+    int res = 0;
+
+    unsigned int current_slave;
+    unsigned int old_slave;
+
+    printf("Connecting to RWSplit %s\n", Test->maxscale_IP);
+    if (Test->connect_rwsplit() != 0)
+    {
+        Test->add_result(1, "Error connection to RWSplit! Exiting\n");
+    }
+    else
+    {
+
+        Test->tprintf("Checking current slave\n");
+        old_slave = Test->find_connected_slave( &res);
+
+        Test->add_result(res, "no current slave\n");
+
+        Test->tprintf("Setup firewall to block mysql on old slave (oldslave is node %d)\n", old_slave);
+        if ((old_slave < 0) || (old_slave >= Test->repl->N))
+        {
+            Test->add_result(1, "Active slave is not found\n");
+        }
+        else
+        {
+            Test->repl->block_node(old_slave);
+
+            Test->tprintf("Sleeping 60 seconds to let MaxScale to find new slave\n");
+            Test->stop_timeout();
+            sleep(60);
+            Test->set_timeout(20);
+
+            current_slave = Test->find_connected_slave(&res);
+            if ((current_slave == old_slave) || (current_slave < 0))
+            {
+                Test->add_result(1, "No failover happened\n");
+            }
+
+            Test->tprintf("Setup firewall back to allow mysql\n");
+            Test->repl->unblock_node(old_slave);
+
+            Test->close_rwsplit();
+
+            Test->check_maxscale_alive();
+            Test->set_timeout(20);
+        }
+        Test->set_timeout(200);
+        Test->repl->start_replication();
+    }
+
+    int rval = Test->global_result;
+    delete Test;
+    return rval;
+}