MXS-2900 Rename maxscale-system-test directory to system-test

A link with the old directory name is provided.

system-test/sequence.cpp

@@ -0,0 +1,54 @@
+/**
+ * Test SEQUENCE related commands
+ *
+ * This test is only enabled when the backend version is 10.3
+ */
+
+#include "testconnections.h"
+#include <vector>
+
+int main(int argc, char** argv)
+{
+    TestConnections::require_repl_version("10.3");
+    TestConnections test(argc, argv);
+
+    test.maxscales->connect();
+    test.try_query(test.maxscales->conn_rwsplit[0], "CREATE SEQUENCE seq");
+
+    std::vector<std::pair<const char*, const char*>> statements =
+    {
+        {"SELECT NEXT VALUE FOR seq",     "1"},
+        {"SELECT PREVIOUS VALUE FOR seq", "1"},
+        {"SELECT NEXTVAL(seq)",           "2"},
+        {"SELECT LASTVAL(seq)",           "2"},
+    };
+
+    for (auto a : statements)
+    {
+        test.expect(execute_query_check_one(test.maxscales->conn_rwsplit[0], a.first, a.second) == 0,
+                    "Expected '%s' for query: %s",
+                    a.second,
+                    a.first);
+    }
+
+    test.try_query(test.maxscales->conn_rwsplit[0], "SET SQL_MODE='ORACLE'");
+
+    std::vector<std::pair<const char*, const char*>> oracle_statements =
+    {
+        {"SELECT seq.nextval", "3"},
+        {"SELECT seq.currval", "3"},
+    };
+
+    for (auto a : oracle_statements)
+    {
+        test.expect(execute_query_check_one(test.maxscales->conn_rwsplit[0], a.first, a.second) == 0,
+                    "Expected '%s' for query: %s",
+                    a.second,
+                    a.first);
+    }
+
+    test.try_query(test.maxscales->conn_rwsplit[0], "DROP SEQUENCE seq");
+    test.maxscales->disconnect();
+
+    return test.global_result;
+}