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/*
* This file is open source software, licensed to you under the terms
* of the Apache License, Version 2.0 (the "License"). See the NOTICE file
* distributed with this work for additional information regarding copyright
* ownership. You may not use this file except in compliance with the License.
*
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing,
* software distributed under the License is distributed on an
* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
* KIND, either express or implied. See the License for the
* specific language governing permissions and limitations
* under the License.
*/
/*
* Copyright (C) 2019 Lightbits Labs Ltd. - All Rights Reserved
*/
#define BOOST_TEST_MODULE core
#include <boost/test/included/unit_test.hpp>
#include <seastar/core/deleter.hh>
using namespace seastar;
struct TestObject {
TestObject() : has_ref(true){}
TestObject(TestObject&& other) {
has_ref = true;
other.has_ref = false;
}
~TestObject() {
if (has_ref) {
++deletions_called;
}
}
static int deletions_called;
int has_ref;
};
int TestObject::deletions_called = 0;
BOOST_AUTO_TEST_CASE(test_deleter_append_does_not_free_shared_object) {
{
deleter tested;
{
auto obj1 = TestObject();
deleter del1 = make_object_deleter(std::move(obj1));
auto obj2 = TestObject();
deleter del2 = make_object_deleter(std::move(obj2));
del1.append(std::move(del2));
tested = del1.share();
auto obj3 = TestObject();
deleter del3 = make_object_deleter(std::move(obj3));
del1.append(std::move(del3));
}
// since deleter tested still holds references to first two objects, last objec should be deleted
BOOST_REQUIRE(TestObject::deletions_called == 1);
}
BOOST_REQUIRE(TestObject::deletions_called == 3);
}
BOOST_AUTO_TEST_CASE(test_deleter_append_same_shared_object_twice) {
TestObject::deletions_called = 0;
{
deleter tested;
{
deleter del1 = make_object_deleter(TestObject());
auto del2 = del1.share();
tested.append(std::move(del1));
tested.append(std::move(del2));
}
BOOST_REQUIRE(TestObject::deletions_called == 0);
}
BOOST_REQUIRE(TestObject::deletions_called == 1);
}
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