Handle.ut.cpp

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// The Reactive C++ Toolbox.
// Copyright (C) 2013-2019 Swirly Cloud Limited
// Copyright (C) 2021 Reactive Markets Limited
//
// Licensed under the Apache License, Version 2.0 (the "License");
// 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.
 
#include "Handle.hpp"
 
#include <boost/test/unit_test.hpp>
 
#include <iostream>
 
using namespace std;
using namespace toolbox;
 
namespace {
int last_closed{};
 
struct TestPolicy {
    using Id = int;
    static constexpr int invalid() noexcept { return -1; }
    static void close(int id) noexcept { last_closed = id; }
};
 
using TestHandle = BasicHandle<TestPolicy>;
 
ostream& operator<<(ostream& os, const TestHandle& h)
{
    return os << h.get();
}
 
} // namespace
 
BOOST_AUTO_TEST_SUITE(HandleSuite)
 
BOOST_AUTO_TEST_CASE(HandleInvalidCase)
{
    last_closed = 0;
 
    BOOST_CHECK(!TestHandle{});
    BOOST_CHECK_EQUAL(TestHandle{}.get(), -1);
    BOOST_CHECK_EQUAL(last_closed, 0);
 
    BOOST_CHECK(!TestHandle{nullptr});
    BOOST_CHECK_EQUAL(TestHandle{nullptr}.get(), -1);
    BOOST_CHECK_EQUAL(last_closed, 0);
}
 
BOOST_AUTO_TEST_CASE(HandleCloseCase)
{
    last_closed = 0;
 
    BOOST_CHECK(TestHandle{1});
    BOOST_CHECK_EQUAL(TestHandle{1}.get(), 1);
    BOOST_CHECK_EQUAL(last_closed, 1);
}
 
BOOST_AUTO_TEST_CASE(HandleReleaseCase)
{
    last_closed = 0;
 
    BOOST_CHECK_EQUAL(TestHandle{1}.release(), 1);
    BOOST_CHECK_EQUAL(last_closed, 0);
}
 
BOOST_AUTO_TEST_CASE(HandleResetCase)
{
    last_closed = 0;
    {
        TestHandle h{1};
        h.reset(2);
        BOOST_CHECK_EQUAL(last_closed, 1);
    }
    BOOST_CHECK_EQUAL(last_closed, 2);
}
 
BOOST_AUTO_TEST_CASE(HandleSwapCase)
{
    last_closed = 0;
    {
        TestHandle h{1};
        TestHandle{2}.swap(h);
        BOOST_CHECK_EQUAL(last_closed, 1);
    }
    BOOST_CHECK_EQUAL(last_closed, 2);
}
 
BOOST_AUTO_TEST_CASE(HandleMoveCase)
{
    last_closed = 0;
 
    TestHandle h{1};
    TestHandle{std::move(h)};
    BOOST_CHECK_EQUAL(last_closed, 1);
    // NOLINTNEXTLINE(bugprone-use-after-move, clang-analyzer-cplusplus.Move)
    BOOST_CHECK_EQUAL(h.get(), -1);
 
    h.reset(2);
    {
        TestHandle tmp;
        tmp = std::move(h);
    }
    BOOST_CHECK_EQUAL(last_closed, 2);
    // NOLINTNEXTLINE(bugprone-use-after-move, clang-analyzer-cplusplus.Move)
    BOOST_CHECK_EQUAL(h.get(), -1);
}
 
BOOST_AUTO_TEST_CASE(HandleEqualityCase)
{
    BOOST_CHECK_EQUAL(TestHandle{1}, TestHandle{1});
    BOOST_CHECK_NE(TestHandle{1}, TestHandle{2});
}
 
BOOST_AUTO_TEST_SUITE_END()