mirror of
https://github.com/ethereum/solidity
synced 2023-10-03 13:03:40 +00:00
120 lines
2.7 KiB
C++
120 lines
2.7 KiB
C++
/*
|
|
This file is part of solidity.
|
|
|
|
solidity 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.
|
|
|
|
solidity 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 solidity. If not, see <http://www.gnu.org/licenses/>.
|
|
*/
|
|
// SPDX-License-Identifier: GPL-3.0
|
|
|
|
#include <libsolutil/LazyInit.h>
|
|
|
|
#include <boost/test/unit_test.hpp>
|
|
|
|
#include <utility>
|
|
|
|
namespace solidity::util::test
|
|
{
|
|
|
|
namespace
|
|
{
|
|
|
|
template<typename T>
|
|
void assertInitCalled(LazyInit<T> lazyInit, bool target)
|
|
{
|
|
bool initCalled = false;
|
|
|
|
lazyInit.init([&]{
|
|
initCalled = true;
|
|
return T();
|
|
});
|
|
|
|
BOOST_REQUIRE_EQUAL(initCalled, target);
|
|
}
|
|
|
|
// Take ownership to ensure that it doesn't "mutate"
|
|
template<typename T>
|
|
void assertNotEmpty(LazyInit<T> _lazyInit) { assertInitCalled(std::move(_lazyInit), false); }
|
|
|
|
// Take ownership to ensure that it doesn't "mutate"
|
|
template<typename T>
|
|
void assertEmpty(LazyInit<T> _lazyInit) { assertInitCalled(std::move(_lazyInit), true); }
|
|
|
|
template<typename T>
|
|
T valueOf(LazyInit<T> _lazyInit)
|
|
{
|
|
return _lazyInit.init([&]{
|
|
BOOST_REQUIRE(false); // this should never be called
|
|
return T();
|
|
});
|
|
}
|
|
|
|
}
|
|
|
|
BOOST_AUTO_TEST_SUITE(LazyInitTests, *boost::unit_test::label("nooptions"))
|
|
|
|
BOOST_AUTO_TEST_CASE(default_constructed_is_empty)
|
|
{
|
|
assertEmpty(LazyInit<int>());
|
|
assertEmpty(LazyInit<int const>());
|
|
}
|
|
|
|
BOOST_AUTO_TEST_CASE(initialized_is_not_empty)
|
|
{
|
|
LazyInit<int> lazyInit;
|
|
lazyInit.init([]{ return 12; });
|
|
|
|
assertNotEmpty(std::move(lazyInit));
|
|
}
|
|
|
|
BOOST_AUTO_TEST_CASE(init_returns_init_value)
|
|
{
|
|
LazyInit<int> lazyInit;
|
|
|
|
BOOST_CHECK_EQUAL(lazyInit.init([]{ return 12; }), 12);
|
|
|
|
// A second call to init should not change the value
|
|
BOOST_CHECK_EQUAL(lazyInit.init([]{ return 42; }), 12);
|
|
}
|
|
|
|
BOOST_AUTO_TEST_CASE(moved_from_is_empty)
|
|
{
|
|
{
|
|
LazyInit<int> lazyInit;
|
|
{ [[maybe_unused]] auto pilfered = std::move(lazyInit); }
|
|
|
|
assertEmpty(std::move(lazyInit));
|
|
}
|
|
|
|
{
|
|
LazyInit<int> lazyInit;
|
|
lazyInit.init([]{ return 12; });
|
|
|
|
{ [[maybe_unused]] auto pilfered = std::move(lazyInit); }
|
|
|
|
assertEmpty(std::move(lazyInit));
|
|
}
|
|
}
|
|
|
|
BOOST_AUTO_TEST_CASE(move_constructed_has_same_value_as_original)
|
|
{
|
|
LazyInit<int> original;
|
|
original.init([]{ return 12; });
|
|
|
|
LazyInit<int> moveConstructed = std::move(original);
|
|
BOOST_CHECK_EQUAL(valueOf(std::move(moveConstructed)), 12);
|
|
}
|
|
|
|
BOOST_AUTO_TEST_SUITE_END()
|
|
|
|
}
|