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sparse_set: added ::at to get the entity at a given position, if any

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This commit is contained in:
Michele Caini
2021-02-15 14:56:18 +01:00
parent 18832fcb37
commit 3118cd4fa5
3 changed files with 22 additions and 2 deletions
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12
test/entt/entity/sparse_set.cpp
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@@ -26,8 +26,6 @@ TEST(SparseSet, Functionalities) {
set.emplace(entt::entity{42});
ASSERT_EQ(set.index(entt::entity{42}), 0u);
ASSERT_FALSE(set.empty());
ASSERT_EQ(set.size(), 1u);
ASSERT_NE(std::as_const(set).begin(), std::as_const(set).end());
@@ -35,6 +33,8 @@ TEST(SparseSet, Functionalities) {
ASSERT_FALSE(set.contains(entt::entity{0}));
ASSERT_TRUE(set.contains(entt::entity{42}));
ASSERT_EQ(set.index(entt::entity{42}), 0u);
ASSERT_EQ(set.at(0u), entt::entity{42});
ASSERT_EQ(set.at(1u), static_cast<entt::entity>(entt::null));
set.remove(entt::entity{42});
@@ -44,11 +44,15 @@ TEST(SparseSet, Functionalities) {
ASSERT_EQ(set.begin(), set.end());
ASSERT_FALSE(set.contains(entt::entity{0}));
ASSERT_FALSE(set.contains(entt::entity{42}));
ASSERT_EQ(set.at(0u), static_cast<entt::entity>(entt::null));
ASSERT_EQ(set.at(1u), static_cast<entt::entity>(entt::null));
set.emplace(entt::entity{42});
ASSERT_FALSE(set.empty());
ASSERT_EQ(set.index(entt::entity{42}), 0u);
ASSERT_EQ(set.at(0u), entt::entity{42});
ASSERT_EQ(set.at(1u), static_cast<entt::entity>(entt::null));
ASSERT_TRUE(std::is_move_constructible_v<decltype(set)>);
ASSERT_TRUE(std::is_move_assignable_v<decltype(set)>);
@@ -59,8 +63,12 @@ TEST(SparseSet, Functionalities) {
other = std::move(set);
ASSERT_TRUE(set.empty());
ASSERT_EQ(set.at(0u), static_cast<entt::entity>(entt::null));
ASSERT_FALSE(other.empty());
ASSERT_EQ(other.index(entt::entity{42}), 0u);
ASSERT_EQ(other.at(0u), entt::entity{42});
ASSERT_EQ(other.at(1u), static_cast<entt::entity>(entt::null));
other.clear();