1 files changed, 69 insertions, 0 deletions
diff --git a/src/test/common/test_convenience.cc b/src/test/common/test_convenience.cc
new file mode 100644
index 000000000..4f4ba386e
--- /dev/null
+++ b/src/test/common/test_convenience.cc
@@ -0,0 +1,69 @@
+// -*- 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) 2017 Red Hat, Inc.
+ *
+ * Author: Casey Bodley <cbodley@redhat.com>
+ *
+ * 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 "common/convenience.h" // include first: tests that header is standalone
+
+#include <string>
+#include <boost/optional.hpp>
+#include <gtest/gtest.h>
+
+// A just god would not allow the C++ standard to make taking the
+// address of member functions in the standard library undefined behavior.
+static std::string::size_type l(const std::string& s) {
+  return s.size();
+}
+
+TEST(Convenience, MaybeDo)
+{
+  boost::optional<std::string> s("qwerty");
+  boost::optional<std::string> t;
+  auto r = ceph::maybe_do(s, l);
+  EXPECT_TRUE(r);
+  EXPECT_EQ(*r, s->size());
+
+  EXPECT_FALSE(ceph::maybe_do(t, l));
+}
+
+TEST(Convenience, MaybeDoOr)
+{
+  const boost::optional<std::string> s("qwerty");
+  const boost::optional<std::string> t;
+  auto r = ceph::maybe_do_or(s, l, 0);
+  EXPECT_EQ(r, s->size());
+
+  EXPECT_EQ(ceph::maybe_do_or(t, l, 0u), 0u);
+}
+
+TEST(Convenience, StdMaybeDo)
+{
+  std::optional<std::string> s("qwerty");
+  std::optional<std::string> t;
+  auto r = ceph::maybe_do(s, l);
+  EXPECT_TRUE(r);
+  EXPECT_EQ(*r, s->size());
+
+  EXPECT_FALSE(ceph::maybe_do(t, l));
+}
+
+TEST(Convenience, StdMaybeDoOr)
+{
+  const std::optional<std::string> s("qwerty");
+  const std::optional<std::string> t;
+  auto r = ceph::maybe_do_or(s, l, 0);
+  EXPECT_EQ(r, s->size());
+
+  EXPECT_EQ(ceph::maybe_do_or(t, l, 0u), 0u);
+}