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// -*- 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);
}
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