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test.cpp
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test.cpp
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#define DOCTEST_CONFIG_IMPLEMENT_WITH_MAIN
#include "doctest/doctest.h"
#include <thh-packed-hashtable/packed-hashtable.hpp>
#include <array>
TEST_CASE("Can allocate packed hashtable")
{
thh::packed_hashtable_t<char, char> packed_hashtable;
CHECK(true);
}
TEST_CASE("Container size zero after init")
{
thh::packed_hashtable_t<char, char> packed_hashtable;
const auto dense_map_size = packed_hashtable.size();
CHECK(dense_map_size == 0);
}
TEST_CASE("Container empty after init")
{
thh::packed_hashtable_t<char, char> packed_hashtable;
CHECK(packed_hashtable.empty());
}
TEST_CASE("Container not empty after add")
{
thh::packed_hashtable_t<int, char> packed_hashtable;
packed_hashtable.add(std::pair{5, 'a'});
CHECK(!packed_hashtable.empty());
}
TEST_CASE("Container size increase by one after add")
{
thh::packed_hashtable_t<int, char> packed_hashtable;
packed_hashtable.add(std::pair{5, 'a'});
CHECK(packed_hashtable.size() == 1);
}
TEST_CASE("Elements can be reserved")
{
thh::packed_hashtable_t<int, std::string> packed_hashtable;
packed_hashtable.reserve(10);
CHECK(packed_hashtable.size() == 0);
CHECK(packed_hashtable.capacity() == 10);
}
TEST_CASE("Container can be cleared")
{
thh::packed_hashtable_t<int, std::string> packed_hashtable;
packed_hashtable.add({1, "one"});
packed_hashtable.add({2, "two"});
packed_hashtable.add({3, "three"});
packed_hashtable.clear();
CHECK(packed_hashtable.size() == 0);
CHECK(packed_hashtable.empty());
for (const auto& key : {1, 2, 3}) {
CHECK(!packed_hashtable.has(key));
}
}
TEST_CASE("Adding same key with add or update returns iterator that prevented "
"addition (l-value)")
{
thh::packed_hashtable_t<int, std::string> packed_hashtable;
auto first_key_value_pair = std::pair<const int, std::string>{2, "a"};
auto second_key_value_pair = std::pair<const int, std::string>{2, "b"};
auto first_add = packed_hashtable.add(first_key_value_pair);
auto second_add = packed_hashtable.add(second_key_value_pair);
CHECK(first_add.first->first == 2);
CHECK(first_add.second);
CHECK(second_add.first->first == 2);
CHECK(!second_add.second);
CHECK(second_add.first->second == first_add.first->second);
bool called = false;
packed_hashtable.call(2, [&called](const std::string& c) {
CHECK(c == "a");
called = true;
});
CHECK(called);
CHECK(packed_hashtable.size() == 1);
}
TEST_CASE("Adding same key with add or update returns iterator that prevented "
"addition and updates value (l-value)")
{
thh::packed_hashtable_t<int, std::string> packed_hashtable;
auto first_key_value_pair = std::pair<const int, std::string>{2, "a"};
auto second_key_value_pair = std::pair<const int, std::string>{2, "b"};
auto first_add = packed_hashtable.add_or_update(first_key_value_pair);
auto second_add = packed_hashtable.add_or_update(second_key_value_pair);
CHECK(first_add.first->first == 2);
CHECK(first_add.second);
CHECK(second_add.first->first == 2);
CHECK(!second_add.second);
CHECK(second_add.first->second == first_add.first->second);
bool called = false;
packed_hashtable.call(2, [&called](const std::string& c) {
CHECK(c == "b");
called = true;
});
CHECK(called);
CHECK(packed_hashtable.size() == 1);
}
TEST_CASE("Adding same key with add or update returns iterator that prevented "
"addition (r-value)")
{
thh::packed_hashtable_t<int, std::string> packed_hashtable;
auto first_add = packed_hashtable.add({2, "a"});
auto second_add = packed_hashtable.add({2, "b"});
CHECK(first_add.first->first == 2);
CHECK(first_add.second);
CHECK(second_add.first->first == 2);
CHECK(!second_add.second);
CHECK(second_add.first->second == first_add.first->second);
bool called = false;
packed_hashtable.call(2, [&called](const std::string& c) {
CHECK(c == "a");
called = true;
});
CHECK(called);
CHECK(packed_hashtable.size() == 1);
}
TEST_CASE("Adding same key with add or update returns iterator that prevented "
"addition and updates value (r-value)")
{
thh::packed_hashtable_t<int, std::string> packed_hashtable;
auto first_add = packed_hashtable.add_or_update({2, "a"});
auto second_add = packed_hashtable.add_or_update({2, "b"});
CHECK(first_add.first->first == 2);
CHECK(first_add.second);
CHECK(second_add.first->first == 2);
CHECK(!second_add.second);
CHECK(second_add.first->second == first_add.first->second);
bool called = false;
packed_hashtable.call(2, [&called](const std::string& c) {
CHECK(c == "b");
called = true;
});
CHECK(called);
CHECK(packed_hashtable.size() == 1);
}
TEST_CASE("Move only type can be added to packed_hashtable")
{
struct object_t
{
object_t(int i, int j) : i_(i), j_(j) {}
object_t(object_t&&) = default;
int i_;
int j_;
};
thh::packed_hashtable_t<char, object_t> packed_hashtable;
packed_hashtable.add({'a', object_t{1, 2}});
bool called = false;
packed_hashtable.call('a', [&called](const object_t& c) {
called = true;
CHECK(c.i_ == 1);
CHECK(c.j_ == 2);
});
CHECK(called);
}
TEST_CASE("Visit values via handle iterators and key lookup")
{
thh::packed_hashtable_t<int, std::string> packed_hashtable;
packed_hashtable.add({123, "test"});
packed_hashtable.add({456, "the"});
packed_hashtable.add({987, "iteration"});
std::string expected = "testtheiteration";
std::sort(expected.begin(), expected.end());
std::string outcome;
std::for_each(
packed_hashtable.hbegin(), packed_hashtable.hend(),
[&packed_hashtable, &outcome](const auto& key_handle) {
packed_hashtable.call(
key_handle.first,
[&outcome](const std::string& value) { outcome += value; });
});
std::sort(outcome.begin(), outcome.end());
CHECK(outcome == expected);
}
TEST_CASE("Visit values via handle iterators and handle lookup")
{
thh::packed_hashtable_t<int, std::string> packed_hashtable;
packed_hashtable.add({123, "test"});
packed_hashtable.add({456, "the"});
packed_hashtable.add({987, "iteration"});
std::string expected = "testtheiteration";
std::sort(expected.begin(), expected.end());
std::string outcome;
std::for_each(
packed_hashtable.hbegin(), packed_hashtable.hend(),
[&packed_hashtable, &outcome](const auto& key_handle) {
packed_hashtable.call(
key_handle.second,
[&outcome](const std::string& value) { outcome += value; });
});
std::sort(outcome.begin(), outcome.end());
CHECK(outcome == expected);
}
TEST_CASE("Container call overloads are called for const container with key")
{
thh::packed_hashtable_t<char, std::string> packed_hashtable;
packed_hashtable.add({'a', std::string{"letter-a"}});
bool called = false;
std::as_const(packed_hashtable).call('a', [&called](const std::string& str) {
called = true;
CHECK(str == std::string{"letter-a"});
});
CHECK(called);
}
TEST_CASE("Container call overloads are called for const container with handle")
{
thh::packed_hashtable_t<char, std::string> packed_hashtable;
packed_hashtable.add({'a', std::string{"letter-a"}});
bool called = false;
std::as_const(packed_hashtable)
.call(packed_hashtable.hbegin()->second, [&called](const std::string& str) {
called = true;
CHECK(str == std::string{"letter-a"});
});
CHECK(called);
}
TEST_CASE("Value can be removed using key")
{
thh::packed_hashtable_t<int, std::string> packed_hashtable;
packed_hashtable.add({5, "hello"});
packed_hashtable.add({8, "world"});
packed_hashtable.remove(8);
CHECK(packed_hashtable.size() == 1);
}
TEST_CASE("Iterator to next handle is returned after remove")
{
thh::packed_hashtable_t<int, std::string> packed_hashtable;
packed_hashtable.add({5, "hello"});
packed_hashtable.add({8, "world"});
std::vector<int> keys;
for (const auto key : packed_hashtable.handle_iteration()) {
keys.push_back(key.first);
}
const auto handle_it = packed_hashtable.remove(keys[0]);
CHECK(handle_it->first == keys[1]);
}
TEST_CASE("Values can be removed via iteration")
{
thh::packed_hashtable_t<int, std::string> packed_hashtable;
packed_hashtable.add({1, "one"});
packed_hashtable.add({2, "two"});
packed_hashtable.add({3, "three"});
packed_hashtable.add({4, "four"});
packed_hashtable.add({5, "five"});
packed_hashtable.add({6, "six"});
// erase all odd numbers from table
for (auto it = packed_hashtable.hbegin(); it != packed_hashtable.hend();) {
if (it->first % 2 != 0) {
it = packed_hashtable.remove(it);
} else {
++it;
}
}
std::string outcome;
std::for_each(
packed_hashtable.vbegin(), packed_hashtable.vend(),
[&outcome](const auto& value) { outcome.append(value); });
// sort characters to avoid any order dependence issues
std::sort(outcome.begin(), outcome.end());
CHECK(outcome == "fioorstuwx");
CHECK(packed_hashtable.size() == 3);
}
TEST_CASE("Container has key after add")
{
thh::packed_hashtable_t<int, std::string> packed_hashtable;
packed_hashtable.add({1, "one"});
packed_hashtable.add({2, "two"});
packed_hashtable.add({3, "three"});
CHECK(packed_hashtable.has(1));
CHECK(packed_hashtable.has(2));
CHECK(packed_hashtable.has(3));
}
TEST_CASE("Container does not have key that wasn't added")
{
thh::packed_hashtable_t<int, std::string> packed_hashtable;
packed_hashtable.add({1, "one"});
packed_hashtable.add({2, "two"});
packed_hashtable.add({3, "three"});
CHECK(!packed_hashtable.has(4));
CHECK(!packed_hashtable.has(5));
CHECK(!packed_hashtable.has(6));
}
TEST_CASE("Iterate over all added handles")
{
thh::packed_hashtable_t<int, std::string> packed_hashtable;
auto handle_it_1 = packed_hashtable.add({1, "one"});
auto handle_it_2 = packed_hashtable.add({2, "two"});
auto handle_it_3 = packed_hashtable.add({3, "three"});
const std::array expected_handle_its = {
handle_it_1, handle_it_2, handle_it_3};
CHECK(packed_hashtable.size() == 3);
for ([[maybe_unused]] auto& h : packed_hashtable.handle_iteration()) {
const auto found = std::find_if(
expected_handle_its.begin(), expected_handle_its.end(),
[h](const auto handle) { return handle.first->second == h.second; });
CHECK(found != expected_handle_its.end());
}
}
TEST_CASE("Iterate over all added values")
{
using namespace std::string_literals;
thh::packed_hashtable_t<int, std::string> packed_hashtable;
packed_hashtable.add({1, "one"s});
packed_hashtable.add({2, "two"s});
packed_hashtable.add({3, "three"s});
const std::array<std::pair<int, std::string>, 3> expected_key_values = {
std::pair{1, "one"s}, {2, "two"s}, {3, "three"s}};
CHECK(packed_hashtable.size() == 3);
for ([[maybe_unused]] const auto& v :
std::as_const(packed_hashtable).value_iteration()) {
const auto found = std::find_if(
expected_key_values.begin(), expected_key_values.end(),
[v](const auto key_value) { return key_value.second == v; });
CHECK(found != expected_key_values.end());
}
for ([[maybe_unused]] auto& v : packed_hashtable.value_iteration()) {
const auto found = std::find_if(
expected_key_values.begin(), expected_key_values.end(),
[v](const auto key_value) { return key_value.second == v; });
CHECK(found != expected_key_values.end());
}
}
TEST_CASE("Container handle can be found using key")
{
thh::packed_hashtable_t<int, std::string> packed_hashtable;
packed_hashtable.add({1, "one"});
packed_hashtable.add({2, "two"});
packed_hashtable.add({3, "three"});
const auto key_handle = packed_hashtable.find(3);
CHECK(key_handle->first == 3);
const auto expected = packed_hashtable.call_return(
key_handle->second, [](const auto& value) { return value; });
CHECK(expected == "three");
}
TEST_CASE("Const container handle can be found using key")
{
thh::packed_hashtable_t<int, std::string> packed_hashtable;
packed_hashtable.add({1, "one"});
packed_hashtable.add({2, "two"});
packed_hashtable.add({3, "three"});
const auto key_handle = std::as_const(packed_hashtable).find(1);
CHECK(key_handle->first == 1);
const auto expected =
std::as_const(packed_hashtable)
.call_return(key_handle->second, [](const auto& value) { return value; });
CHECK(expected == "one");
}
TEST_CASE("Container handle not found for non-existent key or handle")
{
thh::packed_hashtable_t<std::string, int> packed_hashtable;
packed_hashtable.add({"one", 1});
packed_hashtable.add({"two", 2});
packed_hashtable.add({"three", 3});
const auto key_handle = packed_hashtable.find(std::string("four"));
CHECK(key_handle == packed_hashtable.hend());
const auto expected = packed_hashtable.call_return(
thh::packed_hashtable_handle_t{}, [](const auto& value) { return value; });
CHECK(!expected.has_value());
}
TEST_CASE("Container call return with key produces expected value")
{
thh::packed_hashtable_t<int, std::string> packed_hashtable;
packed_hashtable.add({1, "one"});
packed_hashtable.add({2, "two"});
packed_hashtable.add({3, "three"});
auto two_expected = packed_hashtable.call_return(2, [](std::string& value) {
value += "four";
return value;
});
auto three_expected =
std::as_const(packed_hashtable)
.call_return(3, [](const std::string& value) { return value; });
CHECK(two_expected == std::string("twofour"));
CHECK(three_expected == std::string("three"));
}
TEST_CASE("Container call return with handle produces expected value")
{
thh::packed_hashtable_t<int, std::string> packed_hashtable;
packed_hashtable.add({1, "one"});
packed_hashtable.add({2, "two"});
packed_hashtable.add({3, "three"});
auto key_handle_two = packed_hashtable.find(2);
auto two_expected = packed_hashtable.call_return(
key_handle_two->second, [](std::string& value) {
value += "four";
return value;
});
auto key_handle_three = packed_hashtable.find(3);
auto three_expected =
std::as_const(packed_hashtable)
.call_return(key_handle_three->second, [](const std::string& value) {
return value;
});
CHECK(two_expected == std::string("twofour"));
CHECK(three_expected == std::string("three"));
}
TEST_CASE("Elements that satisfy predicate are removed")
{
thh::packed_hashtable_rl_t<std::string, float> packed_hashtable;
constexpr int element_count = 64;
packed_hashtable.reserve(static_cast<int32_t>(element_count));
for (int i = 0; i < element_count; ++i) {
auto lifetime = i % 2 == 0 ? 1.0f : 0.0f;
packed_hashtable.add({std::string("name") + std::to_string(i), lifetime});
}
thh::remove_when(
packed_hashtable, [](const auto& lifetime) { return lifetime <= 0.0f; });
CHECK(packed_hashtable.size() == element_count / 2);
}