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diff --git a/src/ceph/src/test/libcephfs_config.cc b/src/ceph/src/test/libcephfs_config.cc
new file mode 100644
index 0000000..d55a5fa
--- /dev/null
+++ b/src/ceph/src/test/libcephfs_config.cc
@@ -0,0 +1,63 @@
+// -*- mode:C++; tab-width:8; c-basic-offset:2; indent-tabs-mode:t -*-
+// vim: ts=8 sw=2 smarttab
+/*
+ * Ceph - scalable distributed file system
+ *
+ * Copyright (C) 2011 New Dream Network
+ *
+ * This is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License version 2.1, as published by the Free Software
+ * Foundation.  See file COPYING.
+ *
+ */
+
+#include "gtest/gtest.h"
+#include "include/cephfs/libcephfs.h"
+
+#include <sstream>
+#include <string>
+#include <string.h>
+
+using std::string;
+
+TEST(LibCephConfig, SimpleSet) {
+  struct ceph_mount_info *cmount;
+  int ret = ceph_create(&cmount, NULL);
+  ASSERT_EQ(ret, 0);
+
+  ret = ceph_conf_set(cmount, "leveldb_max_open_files", "21");
+  ASSERT_EQ(ret, 0);
+
+  char buf[128];
+  memset(buf, 0, sizeof(buf));
+  ret = ceph_conf_get(cmount, "leveldb_max_open_files", buf, sizeof(buf));
+  ASSERT_EQ(ret, 0);
+  ASSERT_EQ(string("21"), string(buf));
+
+  ceph_shutdown(cmount);
+}
+
+TEST(LibCephConfig, ArgV) {
+  struct ceph_mount_info *cmount;
+  int ret = ceph_create(&cmount, NULL);
+  ASSERT_EQ(ret, 0);
+
+  const char *argv[] = { "foo", "--leveldb-max-open-files", "2",
+			 "--keyfile", "/tmp/my-keyfile", NULL };
+  size_t argc = (sizeof(argv) / sizeof(argv[0])) - 1;
+  ceph_conf_parse_argv(cmount, argc, argv);
+
+  char buf[128];
+  memset(buf, 0, sizeof(buf));
+  ret = ceph_conf_get(cmount, "keyfile", buf, sizeof(buf));
+  ASSERT_EQ(ret, 0);
+  ASSERT_EQ(string("/tmp/my-keyfile"), string(buf));
+
+  memset(buf, 0, sizeof(buf));
+  ret = ceph_conf_get(cmount, "leveldb_max_open_files", buf, sizeof(buf));
+  ASSERT_EQ(ret, 0);
+  ASSERT_EQ(string("2"), string(buf));
+
+  ceph_shutdown(cmount);
+}