88 lines
2.7 KiB
C++
88 lines
2.7 KiB
C++
/*
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* This file is open source software, licensed to you under the terms
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* of the Apache License, Version 2.0 (the "License"). See the NOTICE file
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* distributed with this work for additional information regarding copyright
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* ownership. You may not use this file except in compliance with the License.
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*
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing,
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* software distributed under the License is distributed on an
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* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
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* KIND, either express or implied. See the License for the
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* specific language governing permissions and limitations
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* under the License.
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*/
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/*
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* Copyright (C) 2017 ScyllaDB Ltd.
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*/
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#define BOOST_TEST_MODULE core
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#include <boost/test/unit_test.hpp>
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#include <seastar/util/noncopyable_function.hh>
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using namespace seastar;
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BOOST_AUTO_TEST_CASE(basic_tests) {
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struct s {
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int f1(int x) const { return x + 1; }
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int f2(int x) { return x + 2; }
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static int f3(int x) { return x + 3; }
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int operator()(int x) const { return x + 4; }
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};
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s obj, obj2;
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auto fn1 = noncopyable_function<int (const s*, int)>(&s::f1);
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auto fn2 = noncopyable_function<int (s*, int)>(&s::f2);
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auto fn3 = noncopyable_function<int (int)>(&s::f3);
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auto fn4 = noncopyable_function<int (int)>(std::move(obj2));
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BOOST_REQUIRE_EQUAL(fn1(&obj, 1), 2);
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BOOST_REQUIRE_EQUAL(fn2(&obj, 1), 3);
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BOOST_REQUIRE_EQUAL(fn3(1), 4);
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BOOST_REQUIRE_EQUAL(fn4(1), 5);
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}
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template <size_t Extra>
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struct payload {
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static unsigned live;
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char extra[Extra];
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std::unique_ptr<int> v;
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payload(int x) : v(std::make_unique<int>(x)) { ++live; }
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payload(payload&& x) noexcept : v(std::move(x.v)) { ++live; }
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void operator=(payload&&) = delete;
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~payload() { --live; }
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int operator()() const { return *v; }
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};
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template <size_t Extra>
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unsigned payload<Extra>::live;
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template <size_t Extra>
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void do_move_tests() {
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using payload = ::payload<Extra>;
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auto f1 = noncopyable_function<int ()>(payload(3));
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BOOST_REQUIRE_EQUAL(payload::live, 1u);
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BOOST_REQUIRE_EQUAL(f1(), 3);
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auto f2 = noncopyable_function<int ()>();
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BOOST_CHECK_THROW(f2(), std::bad_function_call);
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f2 = std::move(f1);
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BOOST_CHECK_THROW(f1(), std::bad_function_call);
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BOOST_REQUIRE_EQUAL(f2(), 3);
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BOOST_REQUIRE_EQUAL(payload::live, 1u);
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f2 = {};
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BOOST_REQUIRE_EQUAL(payload::live, 0u);
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BOOST_CHECK_THROW(f2(), std::bad_function_call);
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}
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BOOST_AUTO_TEST_CASE(small_move_tests) {
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do_move_tests<1>();
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}
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BOOST_AUTO_TEST_CASE(large_move_tests) {
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do_move_tests<1000>();
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}
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