tomato-testing/test/entt/entity/group.cpp
Green Sky 5c7231b7a3 Squashed 'external/entt/entt/' content from commit fef92113
git-subtree-dir: external/entt/entt
git-subtree-split: fef921132cae7588213d0f9bcd2fb9c8ffd8b7fc
2023-07-25 11:29:51 +02:00

1469 lines
48 KiB
C++

#include <algorithm>
#include <cstddef>
#include <functional>
#include <iterator>
#include <tuple>
#include <type_traits>
#include <utility>
#include <gtest/gtest.h>
#include <entt/entity/group.hpp>
#include <entt/entity/registry.hpp>
struct empty_type {};
struct boxed_int {
int value;
};
inline bool operator==(const boxed_int &lhs, const boxed_int &rhs) {
return lhs.value == rhs.value;
}
TEST(NonOwningGroup, Functionalities) {
entt::registry registry;
auto group = registry.group(entt::get<int, char>);
auto cgroup = std::as_const(registry).group_if_exists(entt::get<const int, const char>);
ASSERT_TRUE(group.empty());
const auto e0 = registry.create();
registry.emplace<char>(e0, '1');
const auto e1 = registry.create();
registry.emplace<int>(e1, 42);
registry.emplace<char>(e1, '2');
ASSERT_FALSE(group.empty());
ASSERT_NO_FATAL_FAILURE(group.begin()++);
ASSERT_NO_FATAL_FAILURE(++cgroup.begin());
ASSERT_NO_FATAL_FAILURE([](auto it) { return it++; }(group.rbegin()));
ASSERT_NO_FATAL_FAILURE([](auto it) { return ++it; }(cgroup.rbegin()));
ASSERT_NE(group.begin(), group.end());
ASSERT_NE(cgroup.begin(), cgroup.end());
ASSERT_NE(group.rbegin(), group.rend());
ASSERT_NE(cgroup.rbegin(), cgroup.rend());
ASSERT_EQ(group.size(), 1u);
registry.emplace<int>(e0);
ASSERT_EQ(group.size(), 2u);
registry.erase<int>(e0);
ASSERT_EQ(group.size(), 1u);
for(auto entity: group) {
ASSERT_EQ(std::get<0>(cgroup.get<const int, const char>(entity)), 42);
ASSERT_EQ(std::get<1>(group.get<int, char>(entity)), '2');
ASSERT_EQ(cgroup.get<const char>(entity), '2');
}
ASSERT_EQ(group.handle().data()[0u], e1);
registry.erase<char>(e0);
registry.erase<char>(e1);
ASSERT_EQ(group.begin(), group.end());
ASSERT_EQ(cgroup.begin(), cgroup.end());
ASSERT_EQ(group.rbegin(), group.rend());
ASSERT_EQ(cgroup.rbegin(), cgroup.rend());
ASSERT_TRUE(group.empty());
ASSERT_NE(group.capacity(), 0u);
group.shrink_to_fit();
ASSERT_EQ(group.capacity(), 0u);
decltype(group) invalid{};
ASSERT_TRUE(group);
ASSERT_TRUE(cgroup);
ASSERT_FALSE(invalid);
}
TEST(NonOwningGroup, Handle) {
entt::registry registry;
const auto entity = registry.create();
auto group = registry.group(entt::get<int, char>);
auto &&handle = group.handle();
ASSERT_TRUE(handle.empty());
ASSERT_FALSE(handle.contains(entity));
ASSERT_EQ(&handle, &group.handle());
registry.emplace<int>(entity);
registry.emplace<char>(entity);
ASSERT_FALSE(handle.empty());
ASSERT_TRUE(handle.contains(entity));
ASSERT_EQ(&handle, &group.handle());
}
TEST(NonOwningGroup, Invalid) {
entt::registry registry{};
auto group = std::as_const(registry).group_if_exists(entt::get<const empty_type, const int>);
const auto entity = registry.create();
registry.emplace<empty_type>(entity);
registry.emplace<int>(entity);
ASSERT_FALSE(group);
ASSERT_TRUE(group.empty());
ASSERT_EQ(group.size(), 0u);
ASSERT_EQ(group.capacity(), 0u);
ASSERT_NO_FATAL_FAILURE(group.shrink_to_fit());
ASSERT_EQ(group.begin(), group.end());
ASSERT_EQ(group.rbegin(), group.rend());
ASSERT_FALSE(group.contains(entity));
ASSERT_EQ(group.find(entity), group.end());
ASSERT_EQ(group.front(), entt::entity{entt::null});
ASSERT_EQ(group.back(), entt::entity{entt::null});
}
TEST(NonOwningGroup, ElementAccess) {
entt::registry registry;
auto group = registry.group(entt::get<int, char>);
auto cgroup = std::as_const(registry).group_if_exists(entt::get<const int, const char>);
const auto e0 = registry.create();
registry.emplace<int>(e0);
registry.emplace<char>(e0);
const auto e1 = registry.create();
registry.emplace<int>(e1);
registry.emplace<char>(e1);
for(auto i = 0u; i < group.size(); ++i) {
ASSERT_EQ(group[i], i ? e0 : e1);
ASSERT_EQ(cgroup[i], i ? e0 : e1);
}
}
TEST(NonOwningGroup, Contains) {
entt::registry registry;
auto group = registry.group(entt::get<int, char>);
const auto e0 = registry.create();
registry.emplace<int>(e0);
registry.emplace<char>(e0);
const auto e1 = registry.create();
registry.emplace<int>(e1);
registry.emplace<char>(e1);
registry.destroy(e0);
ASSERT_FALSE(group.contains(e0));
ASSERT_TRUE(group.contains(e1));
}
TEST(NonOwningGroup, Empty) {
entt::registry registry;
const auto e0 = registry.create();
registry.emplace<double>(e0);
registry.emplace<int>(e0);
registry.emplace<float>(e0);
const auto e1 = registry.create();
registry.emplace<char>(e1);
registry.emplace<float>(e1);
ASSERT_TRUE(registry.group(entt::get<char, int, float>).empty());
ASSERT_TRUE(registry.group(entt::get<double, char, int, float>).empty());
}
TEST(NonOwningGroup, Each) {
entt::registry registry;
entt::entity entity[2]{registry.create(), registry.create()};
auto group = registry.group(entt::get<int, char>);
auto cgroup = std::as_const(registry).group_if_exists(entt::get<const int, const char>);
registry.emplace<int>(entity[0u], 0);
registry.emplace<char>(entity[0u], 0);
registry.emplace<int>(entity[1u], 1);
registry.emplace<char>(entity[1u], 1);
auto iterable = group.each();
auto citerable = cgroup.each();
ASSERT_NE(citerable.begin(), citerable.end());
ASSERT_NO_FATAL_FAILURE(iterable.begin()->operator=(*iterable.begin()));
ASSERT_EQ(decltype(iterable.end()){}, iterable.end());
auto it = iterable.begin();
ASSERT_EQ((it++, ++it), iterable.end());
group.each([expected = 1u](auto entt, int &ivalue, char &cvalue) mutable {
ASSERT_EQ(entt::to_integral(entt), expected);
ASSERT_EQ(ivalue, expected);
ASSERT_EQ(cvalue, expected);
--expected;
});
cgroup.each([expected = 1u](const int &ivalue, const char &cvalue) mutable {
ASSERT_EQ(ivalue, expected);
ASSERT_EQ(cvalue, expected);
--expected;
});
ASSERT_EQ(std::get<0>(*iterable.begin()), entity[1u]);
ASSERT_EQ(std::get<0>(*++citerable.begin()), entity[0u]);
static_assert(std::is_same_v<decltype(std::get<1>(*iterable.begin())), int &>);
static_assert(std::is_same_v<decltype(std::get<2>(*citerable.begin())), const char &>);
// do not use iterable, make sure an iterable group works when created from a temporary
for(auto [entt, ivalue, cvalue]: registry.group(entt::get<int, char>).each()) {
ASSERT_EQ(entt::to_integral(entt), ivalue);
ASSERT_EQ(entt::to_integral(entt), cvalue);
}
}
TEST(NonOwningGroup, Sort) {
entt::registry registry;
auto group = registry.group(entt::get<const int, unsigned int>);
const auto e0 = registry.create();
const auto e1 = registry.create();
const auto e2 = registry.create();
const auto e3 = registry.create();
registry.emplace<unsigned int>(e0, 0u);
registry.emplace<unsigned int>(e1, 1u);
registry.emplace<unsigned int>(e2, 2u);
registry.emplace<unsigned int>(e3, 3u);
registry.emplace<int>(e0, 0);
registry.emplace<int>(e1, 1);
registry.emplace<int>(e2, 2);
ASSERT_EQ(group.handle().data()[0u], e0);
ASSERT_EQ(group.handle().data()[1u], e1);
ASSERT_EQ(group.handle().data()[2u], e2);
group.sort([](const entt::entity lhs, const entt::entity rhs) {
return entt::to_integral(lhs) < entt::to_integral(rhs);
});
ASSERT_EQ(group.handle().data()[0u], e2);
ASSERT_EQ(group.handle().data()[1u], e1);
ASSERT_EQ(group.handle().data()[2u], e0);
ASSERT_EQ((group.get<const int, unsigned int>(e0)), (std::make_tuple(0, 0u)));
ASSERT_EQ((group.get<const int, unsigned int>(e1)), (std::make_tuple(1, 1u)));
ASSERT_EQ((group.get<const int, unsigned int>(e2)), (std::make_tuple(2, 2u)));
ASSERT_FALSE(group.contains(e3));
group.sort<const int>([](const int lhs, const int rhs) {
return lhs > rhs;
});
ASSERT_EQ(group.handle().data()[0u], e0);
ASSERT_EQ(group.handle().data()[1u], e1);
ASSERT_EQ(group.handle().data()[2u], e2);
ASSERT_EQ((group.get<const int, unsigned int>(e0)), (std::make_tuple(0, 0u)));
ASSERT_EQ((group.get<const int, unsigned int>(e1)), (std::make_tuple(1, 1u)));
ASSERT_EQ((group.get<const int, unsigned int>(e2)), (std::make_tuple(2, 2u)));
ASSERT_FALSE(group.contains(e3));
group.sort<const int, unsigned int>([](const auto lhs, const auto rhs) {
static_assert(std::is_same_v<decltype(std::get<0>(lhs)), const int &>);
static_assert(std::is_same_v<decltype(std::get<1>(rhs)), unsigned int &>);
return std::get<0>(lhs) < std::get<0>(rhs);
});
ASSERT_EQ(group.handle().data()[0u], e2);
ASSERT_EQ(group.handle().data()[1u], e1);
ASSERT_EQ(group.handle().data()[2u], e0);
ASSERT_EQ((group.get<const int, unsigned int>(e0)), (std::make_tuple(0, 0u)));
ASSERT_EQ((group.get<const int, unsigned int>(e1)), (std::make_tuple(1, 1u)));
ASSERT_EQ((group.get<const int, unsigned int>(e2)), (std::make_tuple(2, 2u)));
ASSERT_FALSE(group.contains(e3));
}
TEST(NonOwningGroup, SortAsAPool) {
entt::registry registry;
auto group = registry.group(entt::get<const int, unsigned int>);
const auto e0 = registry.create();
const auto e1 = registry.create();
const auto e2 = registry.create();
const auto e3 = registry.create();
auto uval = 0u;
auto ival = 0;
registry.emplace<unsigned int>(e0, uval++);
registry.emplace<unsigned int>(e1, uval++);
registry.emplace<unsigned int>(e2, uval++);
registry.emplace<unsigned int>(e3, uval + 1);
registry.emplace<int>(e0, ival++);
registry.emplace<int>(e1, ival++);
registry.emplace<int>(e2, ival++);
for(auto entity: group) {
ASSERT_EQ(group.get<unsigned int>(entity), --uval);
ASSERT_EQ(group.get<const int>(entity), --ival);
}
registry.sort<unsigned int>(std::less<unsigned int>{});
group.sort<unsigned int>();
ASSERT_EQ((group.get<const int, unsigned int>(e0)), (std::make_tuple(0, 0u)));
ASSERT_EQ((group.get<const int, unsigned int>(e1)), (std::make_tuple(1, 1u)));
ASSERT_EQ((group.get<const int, unsigned int>(e2)), (std::make_tuple(2, 2u)));
ASSERT_FALSE(group.contains(e3));
for(auto entity: group) {
ASSERT_EQ(group.get<unsigned int>(entity), uval++);
ASSERT_EQ(group.get<const int>(entity), ival++);
}
}
TEST(NonOwningGroup, IndexRebuiltOnDestroy) {
entt::registry registry;
auto group = registry.group(entt::get<int, unsigned int>);
const auto e0 = registry.create();
const auto e1 = registry.create();
registry.emplace<unsigned int>(e0, 0u);
registry.emplace<unsigned int>(e1, 1u);
registry.emplace<int>(e0, 0);
registry.emplace<int>(e1, 1);
registry.destroy(e0);
registry.emplace<int>(registry.create(), 42);
ASSERT_EQ(group.size(), 1u);
ASSERT_EQ(group[{}], e1);
ASSERT_EQ(group.get<int>(e1), 1);
ASSERT_EQ(group.get<unsigned int>(e1), 1u);
group.each([e1](auto entity, auto ivalue, auto uivalue) {
ASSERT_EQ(entity, e1);
ASSERT_EQ(ivalue, 1);
ASSERT_EQ(uivalue, 1u);
});
for(auto &&curr: group.each()) {
ASSERT_EQ(std::get<0>(curr), e1);
ASSERT_EQ(std::get<1>(curr), 1);
ASSERT_EQ(std::get<2>(curr), 1u);
}
}
TEST(NonOwningGroup, ConstNonConstAndAllInBetween) {
entt::registry registry;
auto group = registry.group(entt::get<int, empty_type, const char>);
ASSERT_EQ(group.size(), 0u);
const auto entity = registry.create();
registry.emplace<int>(entity, 0);
registry.emplace<empty_type>(entity);
registry.emplace<char>(entity, 'c');
ASSERT_EQ(group.size(), 1u);
static_assert(std::is_same_v<decltype(group.get<int>({})), int &>);
static_assert(std::is_same_v<decltype(group.get<const char>({})), const char &>);
static_assert(std::is_same_v<decltype(group.get<int, const char>({})), std::tuple<int &, const char &>>);
static_assert(std::is_same_v<decltype(group.get({})), std::tuple<int &, const char &>>);
static_assert(std::is_same_v<decltype(std::as_const(registry).group_if_exists(entt::get<int, char>)), decltype(std::as_const(registry).group_if_exists(entt::get<const int, const char>))>);
static_assert(std::is_same_v<decltype(std::as_const(registry).group_if_exists(entt::get<const int, char>)), decltype(std::as_const(registry).group_if_exists(entt::get<const int, const char>))>);
static_assert(std::is_same_v<decltype(std::as_const(registry).group_if_exists(entt::get<int, const char>)), decltype(std::as_const(registry).group_if_exists(entt::get<const int, const char>))>);
group.each([](auto &&i, auto &&c) {
static_assert(std::is_same_v<decltype(i), int &>);
static_assert(std::is_same_v<decltype(c), const char &>);
});
for(auto [entt, iv, cv]: group.each()) {
static_assert(std::is_same_v<decltype(entt), entt::entity>);
static_assert(std::is_same_v<decltype(iv), int &>);
static_assert(std::is_same_v<decltype(cv), const char &>);
}
}
TEST(NonOwningGroup, Find) {
entt::registry registry;
auto group = registry.group(entt::get<int, const char>);
const auto e0 = registry.create();
registry.emplace<int>(e0);
registry.emplace<char>(e0);
const auto e1 = registry.create();
registry.emplace<int>(e1);
registry.emplace<char>(e1);
const auto e2 = registry.create();
registry.emplace<int>(e2);
registry.emplace<char>(e2);
const auto e3 = registry.create();
registry.emplace<int>(e3);
registry.emplace<char>(e3);
registry.erase<int>(e1);
ASSERT_NE(group.find(e0), group.end());
ASSERT_EQ(group.find(e1), group.end());
ASSERT_NE(group.find(e2), group.end());
ASSERT_NE(group.find(e3), group.end());
auto it = group.find(e2);
ASSERT_EQ(*it, e2);
ASSERT_EQ(*(++it), e3);
ASSERT_EQ(*(++it), e0);
ASSERT_EQ(++it, group.end());
ASSERT_EQ(++group.find(e0), group.end());
const auto e4 = registry.create();
registry.destroy(e4);
const auto e5 = registry.create();
registry.emplace<int>(e5);
registry.emplace<char>(e5);
ASSERT_NE(group.find(e5), group.end());
ASSERT_EQ(group.find(e4), group.end());
}
TEST(NonOwningGroup, ExcludedComponents) {
entt::registry registry;
const auto e0 = registry.create();
registry.emplace<int>(e0, 0);
const auto e1 = registry.create();
registry.emplace<int>(e1, 1);
registry.emplace<char>(e1);
const auto group = registry.group(entt::get<int>, entt::exclude<char>);
const auto e2 = registry.create();
registry.emplace<int>(e2, 2);
const auto e3 = registry.create();
registry.emplace<int>(e3, 3);
registry.emplace<char>(e3);
for(const auto entity: group) {
ASSERT_TRUE(entity == e0 || entity == e2);
if(entity == e0) {
ASSERT_EQ(group.get<int>(e0), 0);
} else if(entity == e2) {
ASSERT_EQ(group.get<int>(e2), 2);
}
}
registry.emplace<char>(e0);
registry.emplace<char>(e2);
ASSERT_TRUE(group.empty());
registry.erase<char>(e1);
registry.erase<char>(e3);
for(const auto entity: group) {
ASSERT_TRUE(entity == e1 || entity == e3);
if(entity == e1) {
ASSERT_EQ(group.get<int>(e1), 1);
} else if(entity == e3) {
ASSERT_EQ(group.get<int>(e3), 3);
}
}
}
TEST(NonOwningGroup, EmptyAndNonEmptyTypes) {
entt::registry registry;
const auto group = registry.group(entt::get<int, empty_type>);
const auto e0 = registry.create();
registry.emplace<empty_type>(e0);
registry.emplace<int>(e0);
const auto e1 = registry.create();
registry.emplace<empty_type>(e1);
registry.emplace<int>(e1);
registry.emplace<int>(registry.create());
for(const auto entity: group) {
ASSERT_TRUE(entity == e0 || entity == e1);
}
group.each([e0, e1](const auto entity, const int &) {
ASSERT_TRUE(entity == e0 || entity == e1);
});
for(auto [entt, iv]: group.each()) {
static_assert(std::is_same_v<decltype(entt), entt::entity>);
static_assert(std::is_same_v<decltype(iv), int &>);
ASSERT_TRUE(entt == e0 || entt == e1);
}
ASSERT_EQ(group.size(), 2u);
}
TEST(NonOwningGroup, TrackEntitiesOnComponentDestruction) {
entt::registry registry;
const auto group = registry.group(entt::get<int>, entt::exclude<char>);
const auto cgroup = std::as_const(registry).group_if_exists(entt::get<const int>, entt::exclude<char>);
const auto entity = registry.create();
registry.emplace<int>(entity);
registry.emplace<char>(entity);
ASSERT_TRUE(group.empty());
ASSERT_TRUE(cgroup.empty());
registry.erase<char>(entity);
ASSERT_FALSE(group.empty());
ASSERT_FALSE(cgroup.empty());
}
TEST(NonOwningGroup, EmptyTypes) {
entt::registry registry;
const auto entity = registry.create();
registry.emplace<int>(entity);
registry.emplace<char>(entity);
registry.emplace<empty_type>(entity);
registry.group(entt::get<int, char, empty_type>).each([entity](const auto entt, int, char) {
ASSERT_EQ(entity, entt);
});
for(auto [entt, iv, cv]: registry.group(entt::get<int, char, empty_type>).each()) {
static_assert(std::is_same_v<decltype(entt), entt::entity>);
static_assert(std::is_same_v<decltype(iv), int &>);
static_assert(std::is_same_v<decltype(cv), char &>);
ASSERT_EQ(entity, entt);
}
registry.group(entt::get<int, empty_type, char>).each([check = true](int, char) mutable {
ASSERT_TRUE(check);
check = false;
});
for(auto [entt, iv, cv]: registry.group(entt::get<int, empty_type, char>).each()) {
static_assert(std::is_same_v<decltype(entt), entt::entity>);
static_assert(std::is_same_v<decltype(iv), int &>);
static_assert(std::is_same_v<decltype(cv), char &>);
ASSERT_EQ(entity, entt);
}
registry.group(entt::get<empty_type, int, char>).each([entity](const auto entt, int, char) {
ASSERT_EQ(entity, entt);
});
for(auto [entt, iv, cv]: registry.group(entt::get<empty_type, int, char>).each()) {
static_assert(std::is_same_v<decltype(entt), entt::entity>);
static_assert(std::is_same_v<decltype(iv), int &>);
static_assert(std::is_same_v<decltype(cv), char &>);
ASSERT_EQ(entity, entt);
}
auto iterable = registry.group(entt::get<int, char, double>).each();
ASSERT_EQ(iterable.begin(), iterable.end());
}
TEST(NonOwningGroup, FrontBack) {
entt::registry registry;
auto group = registry.group<>(entt::get<const int, const char>);
ASSERT_EQ(group.front(), static_cast<entt::entity>(entt::null));
ASSERT_EQ(group.back(), static_cast<entt::entity>(entt::null));
const auto e0 = registry.create();
registry.emplace<int>(e0);
registry.emplace<char>(e0);
const auto e1 = registry.create();
registry.emplace<int>(e1);
registry.emplace<char>(e1);
const auto entity = registry.create();
registry.emplace<char>(entity);
ASSERT_EQ(group.front(), e1);
ASSERT_EQ(group.back(), e0);
}
TEST(NonOwningGroup, SignalRace) {
entt::registry registry;
registry.on_construct<double>().connect<&entt::registry::emplace_or_replace<int>>();
const auto group = registry.group(entt::get<int, double>);
auto entity = registry.create();
registry.emplace<double>(entity);
ASSERT_EQ(group.size(), 1u);
}
TEST(NonOwningGroup, ExtendedGet) {
using type = decltype(std::declval<entt::registry>().group(entt::get<int, empty_type, char>).get({}));
static_assert(std::tuple_size_v<type> == 2u);
static_assert(std::is_same_v<std::tuple_element_t<0, type>, int &>);
static_assert(std::is_same_v<std::tuple_element_t<1, type>, char &>);
entt::registry registry;
const auto entity = registry.create();
registry.emplace<int>(entity, 42);
registry.emplace<char>(entity, 'c');
const auto tup = registry.group(entt::get<int, char>).get(entity);
ASSERT_EQ(std::get<0>(tup), 42);
ASSERT_EQ(std::get<1>(tup), 'c');
}
TEST(NonOwningGroup, IterableGroupAlgorithmCompatibility) {
entt::registry registry;
const auto entity = registry.create();
registry.emplace<int>(entity);
registry.emplace<char>(entity);
const auto group = registry.group(entt::get<int, char>);
const auto iterable = group.each();
const auto it = std::find_if(iterable.begin(), iterable.end(), [entity](auto args) { return std::get<0>(args) == entity; });
ASSERT_EQ(std::get<0>(*it), entity);
}
TEST(NonOwningGroup, Storage) {
entt::registry registry;
const auto entity = registry.create();
const auto group = registry.group(entt::get<int, const char>);
static_assert(std::is_same_v<decltype(group.storage<0u>()), entt::storage_type_t<int> &>);
static_assert(std::is_same_v<decltype(group.storage<int>()), entt::storage_type_t<int> &>);
static_assert(std::is_same_v<decltype(group.storage<1u>()), const entt::storage_type_t<char> &>);
static_assert(std::is_same_v<decltype(group.storage<const char>()), const entt::storage_type_t<char> &>);
ASSERT_EQ(group.size(), 0u);
group.storage<int>().emplace(entity);
registry.emplace<char>(entity);
ASSERT_EQ(group.size(), 1u);
ASSERT_TRUE(group.storage<int>().contains(entity));
ASSERT_TRUE(group.storage<const char>().contains(entity));
ASSERT_TRUE((registry.all_of<int, char>(entity)));
group.storage<0u>().erase(entity);
ASSERT_EQ(group.size(), 0u);
ASSERT_TRUE(group.storage<1u>().contains(entity));
ASSERT_FALSE((registry.all_of<int, char>(entity)));
}
TEST(OwningGroup, Functionalities) {
entt::registry registry;
auto group = registry.group<int>(entt::get<char>);
auto cgroup = std::as_const(registry).group_if_exists<const int>(entt::get<const char>);
ASSERT_TRUE(group.empty());
const auto e0 = registry.create();
registry.emplace<char>(e0, '1');
const auto e1 = registry.create();
registry.emplace<int>(e1, 42);
registry.emplace<char>(e1, '2');
ASSERT_FALSE(group.empty());
ASSERT_NO_FATAL_FAILURE(group.begin()++);
ASSERT_NO_FATAL_FAILURE(++cgroup.begin());
ASSERT_NO_FATAL_FAILURE([](auto it) { return it++; }(group.rbegin()));
ASSERT_NO_FATAL_FAILURE([](auto it) { return ++it; }(cgroup.rbegin()));
ASSERT_NE(group.begin(), group.end());
ASSERT_NE(cgroup.begin(), cgroup.end());
ASSERT_NE(group.rbegin(), group.rend());
ASSERT_NE(cgroup.rbegin(), cgroup.rend());
ASSERT_EQ(group.size(), 1u);
registry.emplace<int>(e0);
ASSERT_EQ(group.size(), 2u);
registry.erase<int>(e0);
ASSERT_EQ(group.size(), 1u);
ASSERT_EQ(cgroup.storage<const int>().raw()[0u][0u], 42);
ASSERT_EQ(group.storage<int>().raw()[0u][0u], 42);
for(auto entity: group) {
ASSERT_EQ(std::get<0>(cgroup.get<const int, const char>(entity)), 42);
ASSERT_EQ(std::get<1>(group.get<int, char>(entity)), '2');
ASSERT_EQ(cgroup.get<const char>(entity), '2');
}
ASSERT_EQ(group.storage<int>().raw()[0u][0u], 42);
registry.erase<char>(e0);
registry.erase<char>(e1);
ASSERT_EQ(group.begin(), group.end());
ASSERT_EQ(cgroup.begin(), cgroup.end());
ASSERT_EQ(group.rbegin(), group.rend());
ASSERT_EQ(cgroup.rbegin(), cgroup.rend());
ASSERT_TRUE(group.empty());
decltype(group) invalid{};
ASSERT_TRUE(group);
ASSERT_TRUE(cgroup);
ASSERT_FALSE(invalid);
}
TEST(OwningGroup, Invalid) {
entt::registry registry{};
auto group = std::as_const(registry).group_if_exists<const int>(entt::get<const empty_type>);
const auto entity = registry.create();
registry.emplace<empty_type>(entity);
registry.emplace<int>(entity);
ASSERT_FALSE(group);
ASSERT_TRUE(group.empty());
ASSERT_EQ(group.size(), 0u);
ASSERT_EQ(group.begin(), group.end());
ASSERT_EQ(group.rbegin(), group.rend());
ASSERT_FALSE(group.contains(entity));
ASSERT_EQ(group.find(entity), group.end());
ASSERT_EQ(group.front(), entt::entity{entt::null});
ASSERT_EQ(group.back(), entt::entity{entt::null});
}
TEST(OwningGroup, ElementAccess) {
entt::registry registry;
auto group = registry.group<int>(entt::get<char>);
auto cgroup = std::as_const(registry).group_if_exists<const int>(entt::get<const char>);
const auto e0 = registry.create();
registry.emplace<int>(e0);
registry.emplace<char>(e0);
const auto e1 = registry.create();
registry.emplace<int>(e1);
registry.emplace<char>(e1);
for(auto i = 0u; i < group.size(); ++i) {
ASSERT_EQ(group[i], i ? e0 : e1);
ASSERT_EQ(cgroup[i], i ? e0 : e1);
}
}
TEST(OwningGroup, Contains) {
entt::registry registry;
auto group = registry.group<int>(entt::get<char>);
const auto e0 = registry.create();
registry.emplace<int>(e0);
registry.emplace<char>(e0);
const auto e1 = registry.create();
registry.emplace<int>(e1);
registry.emplace<char>(e1);
registry.destroy(e0);
ASSERT_FALSE(group.contains(e0));
ASSERT_TRUE(group.contains(e1));
}
TEST(OwningGroup, Empty) {
entt::registry registry;
const auto e0 = registry.create();
registry.emplace<double>(e0);
registry.emplace<int>(e0);
registry.emplace<float>(e0);
const auto e1 = registry.create();
registry.emplace<char>(e1);
registry.emplace<float>(e1);
ASSERT_TRUE((registry.group<char, int>(entt::get<float>).empty()));
ASSERT_TRUE((registry.group<double, float>(entt::get<char, int>).empty()));
}
TEST(OwningGroup, Each) {
entt::registry registry;
entt::entity entity[2]{registry.create(), registry.create()};
auto group = registry.group<int>(entt::get<char>);
auto cgroup = std::as_const(registry).group_if_exists<const int>(entt::get<const char>);
registry.emplace<int>(entity[0u], 0);
registry.emplace<char>(entity[0u], 0);
registry.emplace<int>(entity[1u], 1);
registry.emplace<char>(entity[1u], 1);
auto iterable = group.each();
auto citerable = cgroup.each();
ASSERT_NE(citerable.begin(), citerable.end());
ASSERT_NO_FATAL_FAILURE(iterable.begin()->operator=(*iterable.begin()));
ASSERT_EQ(decltype(iterable.end()){}, iterable.end());
auto it = iterable.begin();
ASSERT_EQ((it++, ++it), iterable.end());
group.each([expected = 1u](auto entt, int &ivalue, char &cvalue) mutable {
ASSERT_EQ(entt::to_integral(entt), expected);
ASSERT_EQ(ivalue, expected);
ASSERT_EQ(cvalue, expected);
--expected;
});
cgroup.each([expected = 1u](const int &ivalue, const char &cvalue) mutable {
ASSERT_EQ(ivalue, expected);
ASSERT_EQ(cvalue, expected);
--expected;
});
ASSERT_EQ(std::get<0>(*iterable.begin()), entity[1u]);
ASSERT_EQ(std::get<0>(*++citerable.begin()), entity[0u]);
static_assert(std::is_same_v<decltype(std::get<1>(*iterable.begin())), int &>);
static_assert(std::is_same_v<decltype(std::get<2>(*citerable.begin())), const char &>);
// do not use iterable, make sure an iterable group works when created from a temporary
for(auto [entt, ivalue, cvalue]: registry.group<int>(entt::get<char>).each()) {
ASSERT_EQ(entt::to_integral(entt), ivalue);
ASSERT_EQ(entt::to_integral(entt), cvalue);
}
}
TEST(OwningGroup, SortOrdered) {
entt::registry registry;
auto group = registry.group<boxed_int, char>();
entt::entity entities[5]{};
registry.create(std::begin(entities), std::end(entities));
registry.emplace<boxed_int>(entities[0], 12);
registry.emplace<char>(entities[0], 'a');
registry.emplace<boxed_int>(entities[1], 9);
registry.emplace<char>(entities[1], 'b');
registry.emplace<boxed_int>(entities[2], 6);
registry.emplace<char>(entities[2], 'c');
registry.emplace<boxed_int>(entities[3], 1);
registry.emplace<boxed_int>(entities[4], 2);
group.sort([&group](const entt::entity lhs, const entt::entity rhs) {
return group.get<boxed_int>(lhs).value < group.get<boxed_int>(rhs).value;
});
ASSERT_EQ(group.storage<boxed_int>().data()[0u], entities[0]);
ASSERT_EQ(group.storage<boxed_int>().data()[1u], entities[1]);
ASSERT_EQ(group.storage<boxed_int>().data()[2u], entities[2]);
ASSERT_EQ(group.storage<boxed_int>().data()[3u], entities[3]);
ASSERT_EQ(group.storage<boxed_int>().data()[4u], entities[4]);
ASSERT_EQ(group.storage<boxed_int>().raw()[0u][0u].value, 12);
ASSERT_EQ(group.storage<boxed_int>().raw()[0u][1u].value, 9);
ASSERT_EQ(group.storage<boxed_int>().raw()[0u][2u].value, 6);
ASSERT_EQ(group.storage<boxed_int>().raw()[0u][3u].value, 1);
ASSERT_EQ(group.storage<boxed_int>().raw()[0u][4u].value, 2);
ASSERT_EQ(group.storage<char>().raw()[0u][0u], 'a');
ASSERT_EQ(group.storage<char>().raw()[0u][1u], 'b');
ASSERT_EQ(group.storage<char>().raw()[0u][2u], 'c');
ASSERT_EQ((group.get<boxed_int, char>(entities[0])), (std::make_tuple(boxed_int{12}, 'a')));
ASSERT_EQ((group.get<boxed_int, char>(entities[1])), (std::make_tuple(boxed_int{9}, 'b')));
ASSERT_EQ((group.get<boxed_int, char>(entities[2])), (std::make_tuple(boxed_int{6}, 'c')));
ASSERT_FALSE(group.contains(entities[3]));
ASSERT_FALSE(group.contains(entities[4]));
}
TEST(OwningGroup, SortReverse) {
entt::registry registry;
auto group = registry.group<boxed_int, char>();
entt::entity entities[5]{};
registry.create(std::begin(entities), std::end(entities));
registry.emplace<boxed_int>(entities[0], 6);
registry.emplace<char>(entities[0], 'a');
registry.emplace<boxed_int>(entities[1], 9);
registry.emplace<char>(entities[1], 'b');
registry.emplace<boxed_int>(entities[2], 12);
registry.emplace<char>(entities[2], 'c');
registry.emplace<boxed_int>(entities[3], 1);
registry.emplace<boxed_int>(entities[4], 2);
group.sort<boxed_int>([](const auto &lhs, const auto &rhs) {
return lhs.value < rhs.value;
});
ASSERT_EQ(group.storage<boxed_int>().data()[0u], entities[2]);
ASSERT_EQ(group.storage<boxed_int>().data()[1u], entities[1]);
ASSERT_EQ(group.storage<boxed_int>().data()[2u], entities[0]);
ASSERT_EQ(group.storage<boxed_int>().data()[3u], entities[3]);
ASSERT_EQ(group.storage<boxed_int>().data()[4u], entities[4]);
ASSERT_EQ(group.storage<boxed_int>().raw()[0u][0u].value, 12);
ASSERT_EQ(group.storage<boxed_int>().raw()[0u][1u].value, 9);
ASSERT_EQ(group.storage<boxed_int>().raw()[0u][2u].value, 6);
ASSERT_EQ(group.storage<boxed_int>().raw()[0u][3u].value, 1);
ASSERT_EQ(group.storage<boxed_int>().raw()[0u][4u].value, 2);
ASSERT_EQ(group.storage<char>().raw()[0u][0u], 'c');
ASSERT_EQ(group.storage<char>().raw()[0u][1u], 'b');
ASSERT_EQ(group.storage<char>().raw()[0u][2u], 'a');
ASSERT_EQ((group.get<boxed_int, char>(entities[0])), (std::make_tuple(boxed_int{6}, 'a')));
ASSERT_EQ((group.get<boxed_int, char>(entities[1])), (std::make_tuple(boxed_int{9}, 'b')));
ASSERT_EQ((group.get<boxed_int, char>(entities[2])), (std::make_tuple(boxed_int{12}, 'c')));
ASSERT_FALSE(group.contains(entities[3]));
ASSERT_FALSE(group.contains(entities[4]));
}
TEST(OwningGroup, SortUnordered) {
entt::registry registry;
auto group = registry.group<boxed_int>(entt::get<char>);
entt::entity entities[7]{};
registry.create(std::begin(entities), std::end(entities));
registry.emplace<boxed_int>(entities[0], 6);
registry.emplace<char>(entities[0], 'c');
registry.emplace<boxed_int>(entities[1], 3);
registry.emplace<char>(entities[1], 'b');
registry.emplace<boxed_int>(entities[2], 1);
registry.emplace<char>(entities[2], 'a');
registry.emplace<boxed_int>(entities[3], 9);
registry.emplace<char>(entities[3], 'd');
registry.emplace<boxed_int>(entities[4], 12);
registry.emplace<char>(entities[4], 'e');
registry.emplace<boxed_int>(entities[5], 4);
registry.emplace<boxed_int>(entities[6], 5);
group.sort<boxed_int, char>([](const auto lhs, const auto rhs) {
static_assert(std::is_same_v<decltype(std::get<0>(lhs)), boxed_int &>);
static_assert(std::is_same_v<decltype(std::get<1>(rhs)), char &>);
return std::get<1>(lhs) < std::get<1>(rhs);
});
ASSERT_EQ(group.storage<boxed_int>().data()[0u], entities[4]);
ASSERT_EQ(group.storage<boxed_int>().data()[1u], entities[3]);
ASSERT_EQ(group.storage<boxed_int>().data()[2u], entities[0]);
ASSERT_EQ(group.storage<boxed_int>().data()[3u], entities[1]);
ASSERT_EQ(group.storage<boxed_int>().data()[4u], entities[2]);
ASSERT_EQ(group.storage<boxed_int>().data()[5u], entities[5]);
ASSERT_EQ(group.storage<boxed_int>().data()[6u], entities[6]);
ASSERT_EQ(group.storage<boxed_int>().raw()[0u][0u].value, 12);
ASSERT_EQ(group.storage<boxed_int>().raw()[0u][1u].value, 9);
ASSERT_EQ(group.storage<boxed_int>().raw()[0u][2u].value, 6);
ASSERT_EQ(group.storage<boxed_int>().raw()[0u][3u].value, 3);
ASSERT_EQ(group.storage<boxed_int>().raw()[0u][4u].value, 1);
ASSERT_EQ(group.storage<boxed_int>().raw()[0u][5u].value, 4);
ASSERT_EQ(group.storage<boxed_int>().raw()[0u][6u].value, 5);
ASSERT_EQ(group.get<char>(group.storage<boxed_int>().data()[0u]), 'e');
ASSERT_EQ(group.get<char>(group.storage<boxed_int>().data()[1u]), 'd');
ASSERT_EQ(group.get<char>(group.storage<boxed_int>().data()[2u]), 'c');
ASSERT_EQ(group.get<char>(group.storage<boxed_int>().data()[3u]), 'b');
ASSERT_EQ(group.get<char>(group.storage<boxed_int>().data()[4u]), 'a');
ASSERT_FALSE(group.contains(entities[5]));
ASSERT_FALSE(group.contains(entities[6]));
}
TEST(OwningGroup, SortWithExclusionList) {
entt::registry registry;
auto group = registry.group<boxed_int>({}, entt::exclude<char>);
entt::entity entities[5]{};
registry.create(std::begin(entities), std::end(entities));
registry.emplace<boxed_int>(entities[0], 0);
registry.emplace<boxed_int>(entities[1], 1);
registry.emplace<boxed_int>(entities[2], 2);
registry.emplace<boxed_int>(entities[3], 3);
registry.emplace<boxed_int>(entities[4], 4);
registry.emplace<char>(entities[2]);
group.sort([](const entt::entity lhs, const entt::entity rhs) {
return lhs < rhs;
});
ASSERT_EQ(group.storage<boxed_int>().data()[0u], entities[4]);
ASSERT_EQ(group.storage<boxed_int>().data()[1u], entities[3]);
ASSERT_EQ(group.storage<boxed_int>().data()[2u], entities[1]);
ASSERT_EQ(group.storage<boxed_int>().data()[3u], entities[0]);
ASSERT_EQ(group.storage<boxed_int>().raw()[0u][0u].value, 4);
ASSERT_EQ(group.storage<boxed_int>().raw()[0u][1u].value, 3);
ASSERT_EQ(group.storage<boxed_int>().raw()[0u][2u].value, 1);
ASSERT_EQ(group.storage<boxed_int>().raw()[0u][3u].value, 0);
ASSERT_EQ(group.get<boxed_int>(entities[0]).value, 0);
ASSERT_EQ(group.get<boxed_int>(entities[1]).value, 1);
ASSERT_EQ(group.get<boxed_int>(entities[3]).value, 3);
ASSERT_EQ(group.get<boxed_int>(entities[4]).value, 4);
ASSERT_FALSE(group.contains(entities[2]));
}
TEST(OwningGroup, IndexRebuiltOnDestroy) {
entt::registry registry;
auto group = registry.group<int>(entt::get<unsigned int>);
const auto e0 = registry.create();
const auto e1 = registry.create();
registry.emplace<unsigned int>(e0, 0u);
registry.emplace<unsigned int>(e1, 1u);
registry.emplace<int>(e0, 0);
registry.emplace<int>(e1, 1);
registry.destroy(e0);
registry.emplace<int>(registry.create(), 42);
ASSERT_EQ(group.size(), 1u);
ASSERT_EQ(group[{}], e1);
ASSERT_EQ(group.get<int>(e1), 1);
ASSERT_EQ(group.get<unsigned int>(e1), 1u);
group.each([e1](auto entity, auto ivalue, auto uivalue) {
ASSERT_EQ(entity, e1);
ASSERT_EQ(ivalue, 1);
ASSERT_EQ(uivalue, 1u);
});
for(auto &&curr: group.each()) {
ASSERT_EQ(std::get<0>(curr), e1);
ASSERT_EQ(std::get<1>(curr), 1);
ASSERT_EQ(std::get<2>(curr), 1u);
}
}
TEST(OwningGroup, ConstNonConstAndAllInBetween) {
entt::registry registry;
auto group = registry.group<int, const char>(entt::get<empty_type, double, const float>);
ASSERT_EQ(group.size(), 0u);
const auto entity = registry.create();
registry.emplace<int>(entity, 0);
registry.emplace<char>(entity, 'c');
registry.emplace<empty_type>(entity);
registry.emplace<double>(entity, 0.);
registry.emplace<float>(entity, 0.f);
ASSERT_EQ(group.size(), 1u);
static_assert(std::is_same_v<decltype(group.get<int>({})), int &>);
static_assert(std::is_same_v<decltype(group.get<const char>({})), const char &>);
static_assert(std::is_same_v<decltype(group.get<double>({})), double &>);
static_assert(std::is_same_v<decltype(group.get<const float>({})), const float &>);
static_assert(std::is_same_v<decltype(group.get<int, const char, double, const float>({})), std::tuple<int &, const char &, double &, const float &>>);
static_assert(std::is_same_v<decltype(group.get({})), std::tuple<int &, const char &, double &, const float &>>);
static_assert(std::is_same_v<decltype(std::as_const(registry).group_if_exists<int>(entt::get<char>)), decltype(std::as_const(registry).group_if_exists<const int>(entt::get<const char>))>);
static_assert(std::is_same_v<decltype(std::as_const(registry).group_if_exists<const int>(entt::get<char>)), decltype(std::as_const(registry).group_if_exists<const int>(entt::get<const char>))>);
static_assert(std::is_same_v<decltype(std::as_const(registry).group_if_exists<int>(entt::get<const char>)), decltype(std::as_const(registry).group_if_exists<const int>(entt::get<const char>))>);
group.each([](auto &&i, auto &&c, auto &&d, auto &&f) {
static_assert(std::is_same_v<decltype(i), int &>);
static_assert(std::is_same_v<decltype(c), const char &>);
static_assert(std::is_same_v<decltype(d), double &>);
static_assert(std::is_same_v<decltype(f), const float &>);
});
for(auto [entt, iv, cv, dv, fv]: group.each()) {
static_assert(std::is_same_v<decltype(entt), entt::entity>);
static_assert(std::is_same_v<decltype(iv), int &>);
static_assert(std::is_same_v<decltype(cv), const char &>);
static_assert(std::is_same_v<decltype(dv), double &>);
static_assert(std::is_same_v<decltype(fv), const float &>);
}
}
TEST(OwningGroup, Find) {
entt::registry registry;
auto group = registry.group<int>(entt::get<const char>);
const auto e0 = registry.create();
registry.emplace<int>(e0);
registry.emplace<char>(e0);
const auto e1 = registry.create();
registry.emplace<int>(e1);
registry.emplace<char>(e1);
const auto e2 = registry.create();
registry.emplace<int>(e2);
registry.emplace<char>(e2);
const auto e3 = registry.create();
registry.emplace<int>(e3);
registry.emplace<char>(e3);
registry.erase<int>(e1);
ASSERT_NE(group.find(e0), group.end());
ASSERT_EQ(group.find(e1), group.end());
ASSERT_NE(group.find(e2), group.end());
ASSERT_NE(group.find(e3), group.end());
auto it = group.find(e2);
ASSERT_EQ(*it, e2);
ASSERT_EQ(*(++it), e3);
ASSERT_EQ(*(++it), e0);
ASSERT_EQ(++it, group.end());
ASSERT_EQ(++group.find(e0), group.end());
const auto e4 = registry.create();
registry.destroy(e4);
const auto e5 = registry.create();
registry.emplace<int>(e5);
registry.emplace<char>(e5);
ASSERT_NE(group.find(e5), group.end());
ASSERT_EQ(group.find(e4), group.end());
}
TEST(OwningGroup, ExcludedComponents) {
entt::registry registry;
const auto e0 = registry.create();
registry.emplace<int>(e0, 0);
const auto e1 = registry.create();
registry.emplace<int>(e1, 1);
registry.emplace<char>(e1);
const auto group = registry.group<int>({}, entt::exclude<char, double>);
const auto e2 = registry.create();
registry.emplace<int>(e2, 2);
const auto e3 = registry.create();
registry.emplace<int>(e3, 3);
registry.emplace<double>(e3);
for(const auto entity: group) {
ASSERT_TRUE(entity == e0 || entity == e2);
if(entity == e0) {
ASSERT_EQ(group.get<int>(e0), 0);
} else if(entity == e2) {
ASSERT_EQ(group.get<int>(e2), 2);
}
}
registry.emplace<char>(e0);
registry.emplace<double>(e2);
ASSERT_TRUE(group.empty());
registry.erase<char>(e1);
registry.erase<double>(e3);
for(const auto entity: group) {
ASSERT_TRUE(entity == e1 || entity == e3);
if(entity == e1) {
ASSERT_EQ(group.get<int>(e1), 1);
} else if(entity == e3) {
ASSERT_EQ(group.get<int>(e3), 3);
}
}
}
TEST(OwningGroup, EmptyAndNonEmptyTypes) {
entt::registry registry;
const auto group = registry.group<int>(entt::get<empty_type>);
const auto e0 = registry.create();
registry.emplace<empty_type>(e0);
registry.emplace<int>(e0);
const auto e1 = registry.create();
registry.emplace<empty_type>(e1);
registry.emplace<int>(e1);
registry.emplace<int>(registry.create());
for(const auto entity: group) {
ASSERT_TRUE(entity == e0 || entity == e1);
}
group.each([e0, e1](const auto entity, const int &) {
ASSERT_TRUE(entity == e0 || entity == e1);
});
for(auto [entt, iv]: group.each()) {
static_assert(std::is_same_v<decltype(entt), entt::entity>);
static_assert(std::is_same_v<decltype(iv), int &>);
ASSERT_TRUE(entt == e0 || entt == e1);
}
ASSERT_EQ(group.size(), 2u);
}
TEST(OwningGroup, TrackEntitiesOnComponentDestruction) {
entt::registry registry;
const auto group = registry.group<int>({}, entt::exclude<char>);
const auto cgroup = std::as_const(registry).group_if_exists<const int>({}, entt::exclude<char>);
const auto entity = registry.create();
registry.emplace<int>(entity);
registry.emplace<char>(entity);
ASSERT_TRUE(group.empty());
ASSERT_TRUE(cgroup.empty());
registry.erase<char>(entity);
ASSERT_FALSE(group.empty());
ASSERT_FALSE(cgroup.empty());
}
TEST(OwningGroup, EmptyTypes) {
entt::registry registry;
const auto entity = registry.create();
registry.emplace<int>(entity);
registry.emplace<char>(entity);
registry.emplace<empty_type>(entity);
registry.group<int>(entt::get<char, empty_type>).each([entity](const auto entt, int, char) {
ASSERT_EQ(entity, entt);
});
for(auto [entt, iv, cv]: registry.group<int>(entt::get<char, empty_type>).each()) {
static_assert(std::is_same_v<decltype(entt), entt::entity>);
static_assert(std::is_same_v<decltype(iv), int &>);
static_assert(std::is_same_v<decltype(cv), char &>);
ASSERT_EQ(entity, entt);
}
registry.group<char>(entt::get<empty_type, int>).each([check = true](char, int) mutable {
ASSERT_TRUE(check);
check = false;
});
for(auto [entt, cv, iv]: registry.group<char>(entt::get<empty_type, int>).each()) {
static_assert(std::is_same_v<decltype(entt), entt::entity>);
static_assert(std::is_same_v<decltype(cv), char &>);
static_assert(std::is_same_v<decltype(iv), int &>);
ASSERT_EQ(entity, entt);
}
registry.group<empty_type>(entt::get<int, char>).each([entity](const auto entt, int, char) {
ASSERT_EQ(entity, entt);
});
for(auto [entt, iv, cv]: registry.group<empty_type>(entt::get<int, char>).each()) {
static_assert(std::is_same_v<decltype(entt), entt::entity>);
static_assert(std::is_same_v<decltype(iv), int &>);
static_assert(std::is_same_v<decltype(cv), char &>);
ASSERT_EQ(entity, entt);
}
auto iterable = registry.group<double>(entt::get<int, char>).each();
ASSERT_EQ(iterable.begin(), iterable.end());
}
TEST(OwningGroup, FrontBack) {
entt::registry registry;
auto group = registry.group<const char>(entt::get<const int>);
ASSERT_EQ(group.front(), static_cast<entt::entity>(entt::null));
ASSERT_EQ(group.back(), static_cast<entt::entity>(entt::null));
const auto e0 = registry.create();
registry.emplace<int>(e0);
registry.emplace<char>(e0);
const auto e1 = registry.create();
registry.emplace<int>(e1);
registry.emplace<char>(e1);
const auto entity = registry.create();
registry.emplace<char>(entity);
ASSERT_EQ(group.front(), e1);
ASSERT_EQ(group.back(), e0);
}
TEST(OwningGroup, SignalRace) {
entt::registry registry;
registry.on_construct<double>().connect<&entt::registry::emplace_or_replace<int>>();
const auto group = registry.group<int>(entt::get<double>);
auto entity = registry.create();
registry.emplace<double>(entity);
ASSERT_EQ(group.size(), 1u);
}
TEST(OwningGroup, StableLateInitialization) {
entt::registry registry;
for(std::size_t i{}; i < 30u; ++i) {
auto entity = registry.create();
if(!(i % 2u)) registry.emplace<int>(entity);
if(!(i % 3u)) registry.emplace<char>(entity);
}
// thanks to @pgruenbacher for pointing out this corner case
ASSERT_EQ((registry.group<int, char>().size()), 5u);
}
TEST(OwningGroup, PreventEarlyOptOut) {
entt::registry registry;
registry.emplace<int>(registry.create(), 3);
const auto entity = registry.create();
registry.emplace<char>(entity, 'c');
registry.emplace<int>(entity, 2);
// thanks to @pgruenbacher for pointing out this corner case
registry.group<char, int>().each([entity](const auto entt, const auto &c, const auto &i) {
ASSERT_EQ(entity, entt);
ASSERT_EQ(c, 'c');
ASSERT_EQ(i, 2);
});
}
TEST(OwningGroup, SwappingValuesIsAllowed) {
entt::registry registry;
const auto group = registry.group<boxed_int>(entt::get<empty_type>);
for(std::size_t i{}; i < 2u; ++i) {
const auto entity = registry.create();
registry.emplace<boxed_int>(entity, static_cast<int>(i));
registry.emplace<empty_type>(entity);
}
registry.destroy(group.back());
// thanks to @andranik3949 for pointing out this missing test
registry.view<const boxed_int>().each([](const auto entity, const auto &value) {
ASSERT_EQ(entt::to_integral(entity), value.value);
});
}
TEST(OwningGroup, ExtendedGet) {
using type = decltype(std::declval<entt::registry>().group<int, empty_type>(entt::get<char>).get({}));
static_assert(std::tuple_size_v<type> == 2u);
static_assert(std::is_same_v<std::tuple_element_t<0, type>, int &>);
static_assert(std::is_same_v<std::tuple_element_t<1, type>, char &>);
entt::registry registry;
const auto entity = registry.create();
registry.emplace<int>(entity, 42);
registry.emplace<char>(entity, 'c');
const auto tup = registry.group<int>(entt::get<char>).get(entity);
ASSERT_EQ(std::get<0>(tup), 42);
ASSERT_EQ(std::get<1>(tup), 'c');
}
TEST(OwningGroup, IterableGroupAlgorithmCompatibility) {
entt::registry registry;
const auto entity = registry.create();
registry.emplace<int>(entity);
registry.emplace<char>(entity);
const auto group = registry.group<int>(entt::get<char>);
const auto iterable = group.each();
const auto it = std::find_if(iterable.begin(), iterable.end(), [entity](auto args) { return std::get<0>(args) == entity; });
ASSERT_EQ(std::get<0>(*it), entity);
}
TEST(OwningGroup, Storage) {
entt::registry registry;
const auto entity = registry.create();
const auto group = registry.group<int>(entt::get<const char>);
static_assert(std::is_same_v<decltype(group.storage<0u>()), entt::storage_type_t<int> &>);
static_assert(std::is_same_v<decltype(group.storage<int>()), entt::storage_type_t<int> &>);
static_assert(std::is_same_v<decltype(group.storage<1u>()), const entt::storage_type_t<char> &>);
static_assert(std::is_same_v<decltype(group.storage<const char>()), const entt::storage_type_t<char> &>);
ASSERT_EQ(group.size(), 0u);
group.storage<int>().emplace(entity);
registry.emplace<char>(entity);
ASSERT_EQ(group.size(), 1u);
ASSERT_TRUE(group.storage<int>().contains(entity));
ASSERT_TRUE(group.storage<const char>().contains(entity));
ASSERT_TRUE((registry.all_of<int, char>(entity)));
group.storage<0u>().erase(entity);
ASSERT_EQ(group.size(), 0u);
ASSERT_TRUE(group.storage<1u>().contains(entity));
ASSERT_FALSE((registry.all_of<int, char>(entity)));
}