mpd/test/util/TestIntrusiveForwardList.cxx
2023-03-06 14:59:48 +01:00

53 lines
967 B
C++

// SPDX-License-Identifier: BSD-2-Clause
// author: Max Kellermann <max.kellermann@gmail.com>
#include "util/IntrusiveForwardList.hxx"
#include <gtest/gtest.h>
#include <string>
namespace {
struct CharItem final : IntrusiveForwardListHook {
char ch;
constexpr CharItem(char _ch) noexcept:ch(_ch) {}
};
static std::string
ToString(const IntrusiveForwardList<CharItem> &list) noexcept
{
std::string result;
for (const auto &i : list)
result.push_back(i.ch);
return result;
}
} // anonymous namespace
TEST(IntrusiveForwardList, Basic)
{
using Item = CharItem;
Item items[]{'a', 'b', 'c'};
IntrusiveForwardList<CharItem> list;
ASSERT_EQ(ToString(list), "");
list.reverse();
ASSERT_EQ(ToString(list), "");
for (auto &i : items)
list.push_front(i);
ASSERT_EQ(ToString(list), "cba");
list.reverse();
ASSERT_EQ(ToString(list), "abc");
list.pop_front();
ASSERT_EQ(ToString(list), "bc");
list.reverse();
ASSERT_EQ(ToString(list), "cb");
}