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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) 2017 ScyllaDB Ltd.
*/
#define BOOST_TEST_MODULE core
#include <boost/test/included/unit_test.hpp>
#include <seastar/util/noncopyable_function.hh>
using namespace seastar;
BOOST_AUTO_TEST_CASE(basic_tests) {
struct s {
int f1(int x) const { return x + 1; }
int f2(int x) { return x + 2; }
static int f3(int x) { return x + 3; }
int operator()(int x) const { return x + 4; }
};
s obj, obj2;
auto fn1 = noncopyable_function<int (const s*, int)>(&s::f1);
auto fn2 = noncopyable_function<int (s*, int)>(&s::f2);
auto fn3 = noncopyable_function<int (int)>(&s::f3);
auto fn4 = noncopyable_function<int (int)>(std::move(obj2));
BOOST_REQUIRE_EQUAL(fn1(&obj, 1), 2);
BOOST_REQUIRE_EQUAL(fn2(&obj, 1), 3);
BOOST_REQUIRE_EQUAL(fn3(1), 4);
BOOST_REQUIRE_EQUAL(fn4(1), 5);
}
template <size_t Extra>
struct payload {
static unsigned live;
char extra[Extra];
std::unique_ptr<int> v;
payload(int x) : v(std::make_unique<int>(x)) { ++live; }
payload(payload&& x) noexcept : v(std::move(x.v)) { ++live; }
void operator=(payload&&) = delete;
~payload() { --live; }
int operator()() const { return *v; }
};
template <size_t Extra>
unsigned payload<Extra>::live;
template <size_t Extra>
void do_move_tests() {
using payload = ::payload<Extra>;
auto f1 = noncopyable_function<int ()>(payload(3));
BOOST_REQUIRE_EQUAL(payload::live, 1u);
BOOST_REQUIRE_EQUAL(f1(), 3);
auto f2 = noncopyable_function<int ()>();
BOOST_CHECK_THROW(f2(), std::bad_function_call);
f2 = std::move(f1);
BOOST_CHECK_THROW(f1(), std::bad_function_call);
BOOST_REQUIRE_EQUAL(f2(), 3);
BOOST_REQUIRE_EQUAL(payload::live, 1u);
f2 = {};
BOOST_REQUIRE_EQUAL(payload::live, 0u);
BOOST_CHECK_THROW(f2(), std::bad_function_call);
}
BOOST_AUTO_TEST_CASE(small_move_tests) {
do_move_tests<1>();
}
BOOST_AUTO_TEST_CASE(large_move_tests) {
do_move_tests<1000>();
}
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