8b7c7f5a75
Adds a new, cleaned up, HashMap implementation. * Uses Robin Hood Hashing (https://en.wikipedia.org/wiki/Hash_table#Robin_Hood_hashing). * Keeps elements in a double linked list for simpler, ordered, iteration. * Allows keeping iterators for later use in removal (Unlike Map<>, it does not do much for performance vs keeping the key, but helps replace old code). * Uses a more modern C++ iterator API, deprecates the old one. * Supports custom allocator (in case there is a wish to use a paged one). This class aims to unify all the associative template usage and replace it by this one: * Map<> (whereas key order does not matter, which is 99% of cases) * HashMap<> * OrderedHashMap<> * OAHashMap<>
133 lines
4.4 KiB
C++
133 lines
4.4 KiB
C++
/*************************************************************************/
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/* test_hash_map.h */
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/*************************************************************************/
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/* This file is part of: */
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/* GODOT ENGINE */
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/* https://godotengine.org */
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/*************************************************************************/
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/* Copyright (c) 2007-2022 Juan Linietsky, Ariel Manzur. */
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/* Copyright (c) 2014-2022 Godot Engine contributors (cf. AUTHORS.md). */
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/* */
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/* Permission is hereby granted, free of charge, to any person obtaining */
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/* a copy of this software and associated documentation files (the */
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/* "Software"), to deal in the Software without restriction, including */
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/* without limitation the rights to use, copy, modify, merge, publish, */
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/* distribute, sublicense, and/or sell copies of the Software, and to */
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/* permit persons to whom the Software is furnished to do so, subject to */
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/* the following conditions: */
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/* */
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/* The above copyright notice and this permission notice shall be */
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/* included in all copies or substantial portions of the Software. */
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/* */
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/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, */
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/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF */
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/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.*/
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/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY */
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/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, */
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/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE */
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/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */
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/*************************************************************************/
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#ifndef TEST_HASH_MAP_H
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#define TEST_HASH_MAP_H
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#include "core/templates/hash_map.h"
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#include "tests/test_macros.h"
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namespace TestHashMap {
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TEST_CASE("[HashMap] Insert element") {
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HashMap<int, int> map;
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HashMap<int, int>::Iterator e = map.insert(42, 84);
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CHECK(e);
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CHECK(e->key == 42);
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CHECK(e->value == 84);
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CHECK(map[42] == 84);
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CHECK(map.has(42));
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CHECK(map.find(42));
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}
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TEST_CASE("[HashMap] Overwrite element") {
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HashMap<int, int> map;
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map.insert(42, 84);
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map.insert(42, 1234);
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CHECK(map[42] == 1234);
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}
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TEST_CASE("[HashMap] Erase via element") {
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HashMap<int, int> map;
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HashMap<int, int>::Iterator e = map.insert(42, 84);
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map.remove(e);
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CHECK(!map.has(42));
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CHECK(!map.find(42));
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}
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TEST_CASE("[HashMap] Erase via key") {
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HashMap<int, int> map;
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map.insert(42, 84);
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map.erase(42);
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CHECK(!map.has(42));
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CHECK(!map.find(42));
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}
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TEST_CASE("[HashMap] Size") {
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HashMap<int, int> map;
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map.insert(42, 84);
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map.insert(123, 84);
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map.insert(123, 84);
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map.insert(0, 84);
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map.insert(123485, 84);
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CHECK(map.size() == 4);
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}
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TEST_CASE("[HashMap] Iteration") {
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HashMap<int, int> map;
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map.insert(42, 84);
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map.insert(123, 12385);
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map.insert(0, 12934);
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map.insert(123485, 1238888);
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map.insert(123, 111111);
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Vector<Pair<int, int>> expected;
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expected.push_back(Pair<int, int>(42, 84));
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expected.push_back(Pair<int, int>(123, 111111));
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expected.push_back(Pair<int, int>(0, 12934));
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expected.push_back(Pair<int, int>(123485, 1238888));
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int idx = 0;
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for (const KeyValue<int, int> &E : map) {
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CHECK(expected[idx] == Pair<int, int>(E.key, E.value));
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++idx;
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}
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}
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TEST_CASE("[HashMap] Const iteration") {
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HashMap<int, int> map;
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map.insert(42, 84);
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map.insert(123, 12385);
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map.insert(0, 12934);
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map.insert(123485, 1238888);
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map.insert(123, 111111);
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const HashMap<int, int> const_map = map;
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Vector<Pair<int, int>> expected;
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expected.push_back(Pair<int, int>(42, 84));
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expected.push_back(Pair<int, int>(123, 111111));
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expected.push_back(Pair<int, int>(0, 12934));
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expected.push_back(Pair<int, int>(123485, 1238888));
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expected.push_back(Pair<int, int>(123, 111111));
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int idx = 0;
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for (const KeyValue<int, int> &E : const_map) {
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CHECK(expected[idx] == Pair<int, int>(E.key, E.value));
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++idx;
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}
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}
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} // namespace TestHashMap
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#endif // TEST_HASH_MAP_H
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