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- /*
- * Scope Guard
- * Copyright (C) 2017 offa
- *
- * This file is part of Scope Guard.
- *
- * Scope Guard is free software: you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation, either version 3 of the License, or
- * (at your option) any later version.
- *
- * Scope Guard 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 General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with Scope Guard. If not, see <http://www.gnu.org/licenses/>.
- */
-
- #include "scope_fail.h"
- #include <catch.hpp>
- #include <trompeloeil.hpp>
-
- using namespace trompeloeil;
-
- namespace
- {
- struct CallMock
- {
- MAKE_MOCK0(deleter, void());
- };
-
-
- struct ThrowOnCopyMock
- {
- ThrowOnCopyMock() { }
-
- ThrowOnCopyMock(const ThrowOnCopyMock&)
- {
- throw std::exception{};
- }
-
- MAKE_CONST_MOCK0(deleter, void());
-
- void operator()() const
- {
- this->deleter();
- }
-
- ThrowOnCopyMock& operator=(const ThrowOnCopyMock&)
- {
- throw std::exception{};
- }
- };
-
-
- struct NotNothrowMoveMock
- {
- NotNothrowMoveMock(CallMock* m) : m_mock(m) { }
- NotNothrowMoveMock(const NotNothrowMoveMock& other) : m_mock(other.m_mock) { }
- NotNothrowMoveMock(NotNothrowMoveMock&& other) noexcept(false) : m_mock(other.m_mock) { }
-
- void operator()() const
- {
- m_mock->deleter();
- }
-
- NotNothrowMoveMock& operator=(const NotNothrowMoveMock&)
- {
- throw "Not implemented";
- }
-
- NotNothrowMoveMock& operator=(NotNothrowMoveMock&&)
- {
- throw "Not implemented";
- }
-
- CallMock* m_mock;
-
- };
-
-
- CallMock m;
-
-
- void deleter()
- {
- m.deleter();
- }
- }
-
-
- TEST_CASE("exit function called on destruction", "[ScopeFail]")
- {
- REQUIRE_CALL(m, deleter()).TIMES(0);
- auto guard = sr::make_scope_fail(deleter);
- static_cast<void>(guard);
- }
-
- TEST_CASE("exit function lambda called on destruction", "[ScopeFail]")
- {
- CallMock cm;
- REQUIRE_CALL(cm, deleter()).TIMES(0);
- auto guard = sr::make_scope_fail([&cm] { cm.deleter(); });
- static_cast<void>(guard);
- }
-
- TEST_CASE("exit function called and rethrow on copy exception", "[ScopeFail]")
- {
- REQUIRE_THROWS([] {
- const ThrowOnCopyMock noMove;
- REQUIRE_CALL(noMove, deleter());
-
- sr::scope_fail<decltype(noMove)> guard{noMove};
- }());
- }
-
- TEST_CASE("exit function is not called if released", "[ScopeFail]")
- {
- REQUIRE_CALL(m, deleter()).TIMES(0);
- auto guard = sr::make_scope_fail(deleter);
- guard.release();
- }
-
- TEST_CASE("move releases moved-from object", "[ScopeFail]")
- {
- REQUIRE_CALL(m, deleter()).TIMES(0);
- auto movedFrom = sr::make_scope_fail(deleter);
- auto guard = std::move(movedFrom);
- static_cast<void>(guard);
- }
-
- TEST_CASE("move with copy init releases moved-from object", "[ScopeFail]")
- {
- CallMock mock;
- const NotNothrowMoveMock notNothrow{&mock};
- REQUIRE_CALL(mock, deleter()).TIMES(0);
- sr::scope_fail<decltype(notNothrow)> movedFrom{notNothrow};
- auto guard = std::move(movedFrom);
- }
-
- TEST_CASE("move transfers state", "[ScopeFail]")
- {
- REQUIRE_CALL(m, deleter()).TIMES(0);
- auto movedFrom = sr::make_scope_fail(deleter);
- auto guard = std::move(movedFrom);
- static_cast<void>(guard);
- }
-
- TEST_CASE("move transfers state if released", "[ScopeFail]")
- {
- REQUIRE_CALL(m, deleter()).TIMES(0);
- auto movedFrom = sr::make_scope_fail(deleter);
- movedFrom.release();
- auto guard = std::move(movedFrom);
- static_cast<void>(guard);
- }
-
- TEST_CASE("exit function called on exception", "[ScopeFail]")
- {
- try
- {
- REQUIRE_CALL(m, deleter());
- auto guard = sr::make_scope_fail(deleter);
- static_cast<void>(guard);
- throw 3;
- }
- catch( ... )
- {
- }
- }
-
- TEST_CASE("exit function not called on pending exception", "[ScopeFail]")
- {
- try
- {
- throw 3;
- }
- catch( ... )
- {
- auto guard = sr::make_scope_fail(deleter);
- static_cast<void>(guard);
- }
- }
-
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