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/*
* Copyright © 2013 Canonical Ltd.
*
* This program is free software: you can redistribute it and/or modify it
* under the terms of the GNU Lesser General Public License version 3,
* as published by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*
* Authored by: Thomas Voß <thomas.voss@canonical.com>
*/
#include <core/dbus/lifetime_constrained_cache.h>
#include <gtest/gtest.h>
namespace
{
struct Dummy
{
~Dummy()
{
signal_about_to_be_destroyed();
}
const core::Signal<void>& about_to_be_destroyed() const
{
return signal_about_to_be_destroyed;
}
core::Signal<void> signal_about_to_be_destroyed;
};
}
TEST(Cache, an_inserted_object_is_retrievable)
{
const std::string key{"key"};
core::dbus::ThreadSafeLifetimeConstrainedCache<std::string, Dummy> cache;
auto object = std::make_shared<Dummy>();
EXPECT_TRUE(cache.insert_value_for_key(key, object));
EXPECT_TRUE(cache.has_value_for_key(key));
EXPECT_EQ(object, cache.retrieve_value_for_key(key));
}
TEST(Cache, a_removed_object_is_not_retrievable)
{
const std::string key{"key"};
core::dbus::ThreadSafeLifetimeConstrainedCache<std::string, Dummy> cache;
auto object = std::make_shared<Dummy>();
EXPECT_TRUE(cache.insert_value_for_key(key, object));
EXPECT_TRUE(cache.has_value_for_key(key));
cache.remove_value_for_key(key);
EXPECT_FALSE(cache.has_value_for_key(key));
EXPECT_EQ(std::shared_ptr<Dummy>(), cache.retrieve_value_for_key(key));
}
TEST(Cache, an_object_going_out_of_scope_is_automatically_removed_from_the_cache)
{
const std::string key{"key"};
core::dbus::ThreadSafeLifetimeConstrainedCache<std::string, Dummy> cache;
{
auto object = std::make_shared<Dummy>();
EXPECT_TRUE(cache.insert_value_for_key(key, object));
EXPECT_TRUE(cache.has_value_for_key(key));
}
EXPECT_FALSE(cache.has_value_for_key(key));
}
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