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utl/test/tests/deque.cpp

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/*!
* \file deque.cpp
* \brief
* Unit tests for deque
*
* \copyright Copyright (C) 2020 Christos Choutouridis <christos@choutouridis.net>
*
* <dl class=\"section copyright\"><dt>License</dt><dd>
* The MIT License (MIT)
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in all
* copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
* </dd></dl>
*
*/
#include <utl/container/deque.h>
//#include <utl/container/span.h>
#include <gtest/gtest.h>
#include <array>
#include <type_traits>
#include <cstring>
#ifndef WIN_TRHEADS
#include <mutex>
#include <thread>
#else
#include <mingw.thread.h>
#include <mingw.mutex.h>
#endif
namespace Tdeque {
using namespace utl;
// template <typename>
// struct is_span : std::false_type {};
//
// template <typename T, std::size_t S>
// struct is_span<tbx::span<T, S>> : std::true_type {};
template <typename>
struct is_std_array : std::false_type {};
template <typename T, std::size_t N>
struct is_std_array<std::array<T, N>> : std::true_type {};
template <typename, typename = void>
struct has_size_and_data : std::false_type {};
template <typename T>
struct has_size_and_data<T, std::void_t<decltype(std::declval<T>().size()),
decltype(std::declval<T>().data())>>
: std::true_type {};
// Concept
TEST(Tdeque, concept) {
using deque_t = deque<int, 8>;
EXPECT_EQ ( std::is_default_constructible<deque_t>::value, true);
EXPECT_EQ ( std::is_nothrow_default_constructible<deque_t>::value, true);
EXPECT_EQ (!std::is_copy_constructible<deque_t>::value, true);
EXPECT_EQ (!std::is_copy_assignable<deque_t>::value, true);
// EXPECT_EQ (true, !is_span<deque_t>::value);
EXPECT_EQ (true, !is_std_array<deque_t>::value);
EXPECT_EQ (true, !std::is_array<deque_t>::value);
EXPECT_EQ (true, has_size_and_data<deque_t>::value);
}
// Test construction
TEST(Tdeque, contruct) {
deque<int, 8> q1;
deque<int, 8> q2{1, 2, 3, 4, 5, 6, 7, 8};
deque<int, 8> q3{1, 2, 3, 4, 5};
EXPECT_EQ (8UL, q1.capacity());
EXPECT_EQ (0UL, q1.size());
EXPECT_EQ (8UL, q2.capacity());
EXPECT_EQ (8UL, q2.size());
EXPECT_EQ (8UL, q3.capacity());
EXPECT_EQ (5UL, q3.size());
}
// simple push-pop functionality
TEST(Tdeque, push_pop) {
deque<int, 8> q1;
deque<int, 8> q2{1, 2, 3, 4, 5, 6, 7, 8};
q1.push_front(1);
q1.push_front(2);
EXPECT_EQ (1, q1.pop_back());
EXPECT_EQ (2, q1.pop_back());
q1.push_back(1);
q1.push_back(2);
EXPECT_EQ (1, q1.pop_front());
EXPECT_EQ (2, q1.pop_front());
q1.push_front(2);
q1.push_back(3);
q1.push_front(1);
q1.push_back(4);
for (int i=1 ; i<= 4 ; ++i)
EXPECT_EQ ((int)i, q1.pop_front());
}
// front-back
TEST(Tdeque, front_back) {
deque<int, 8> q1;
deque<int, 8> q2{1, 2, 3, 4, 5, 6, 7, 8};
q1.push_front(2);
q1.push_front(1);
q1.push_back(3);
q1.push_back(4);
EXPECT_EQ (1, q1.front());
EXPECT_EQ (4, q1.back());
EXPECT_EQ (1, q2.front());
EXPECT_EQ (8, q2.back());
}
// capacity
TEST(Tdeque, capacity) {
deque<int, 8> q1;
deque<int, 8> q2{1, 2, 3, 4, 5, 6, 7, 8};
q1.push_back(1);
q1.clear();
EXPECT_EQ (true, q1.empty());
EXPECT_EQ (true, q2.full());
EXPECT_EQ (8UL, q1.capacity());
EXPECT_EQ (8UL, q2.capacity());
EXPECT_EQ (0UL, q1.size());
EXPECT_EQ (8UL, q2.size());
q1.push_back(2);
EXPECT_EQ (1UL, q1.size());
q1.push_front(1);
EXPECT_EQ (2UL, q1.size());
q1.pop_back();
EXPECT_EQ (1UL, q1.size());
q1.pop_front();
EXPECT_EQ (0UL, q1.size());
}
// push-pop limits
TEST (Tdeque, push_pop_limits) {
deque<int, 8> q1;
deque<int, 8> q2{1, 2, 3, 4, 5, 6, 7, 8};
EXPECT_EQ (int{}, q1.pop_back());
EXPECT_EQ (0UL, q1.size());
EXPECT_EQ (true, q1.empty());
EXPECT_EQ (false, q1.full());
EXPECT_EQ (int{}, q1.pop_front());
EXPECT_EQ (0UL, q1.size());
EXPECT_EQ (true, q1.empty());
EXPECT_EQ (false, q1.full());
q2.push_front(0);
EXPECT_EQ (1, q2.front());
EXPECT_EQ (8, q2.back());
EXPECT_EQ (8UL, q2.size());
EXPECT_EQ (false, q2.empty());
EXPECT_EQ (true, q2.full());
q2.push_back(9);
EXPECT_EQ (1, q2.front());
EXPECT_EQ (8, q2.back());
EXPECT_EQ (8UL, q2.size());
EXPECT_EQ (false, q2.empty());
EXPECT_EQ (true, q2.full());
}
// iterators
TEST (Tdeque, iterators) {
deque<int, 8> q1{1, 2, 3, 4, 5, 6, 7, 8};
int check_it=1;
EXPECT_EQ (q1.begin().base(), q1.end().base());
EXPECT_NE (q1.begin().iter(), q1.end().iter());
EXPECT_EQ (1, *q1.begin());
EXPECT_EQ (true, (q1.begin() == ++q1.end())); // loop edge iterators
for (auto it = q1.begin() ; it != q1.end() ; ++it)
EXPECT_EQ(*it, check_it++);
EXPECT_EQ(9, check_it); // run through all
EXPECT_EQ (1, q1.front()); // queue stays intact
EXPECT_EQ (8, q1.back());
EXPECT_EQ (8UL, q1.size());
EXPECT_EQ (false, q1.empty());
EXPECT_EQ (true, q1.full());
q1.pop_front();
q1.pop_back();
check_it=2;
for (auto& it : q1)
EXPECT_EQ(it, check_it++);
EXPECT_EQ(8, check_it); // run through all
EXPECT_EQ (2, q1.front()); // queue stays intact
EXPECT_EQ (7, q1.back());
EXPECT_EQ (6UL, q1.size());
EXPECT_EQ (false, q1.empty());
EXPECT_EQ (false, q1.full());
deque<int, 8> q2;
q2.push_front(2);
q2.push_front(1);
q2.push_back(3);
q2.push_back(4);
q2.push_back(5);
check_it =1;
for (auto& it : q2)
EXPECT_EQ(it, check_it++);
EXPECT_EQ(6, check_it); // run through all
}
TEST (Tdeque, range) {
deque<int, 8> q1{1, 2, 3, 4, 5, 6, 7, 8};
int check_it=1;
for (auto& it : q1.contents())
EXPECT_EQ(it, check_it++);
EXPECT_EQ(9, check_it); // run through all
}
// Concept
TEST(Tdeque, concept_atomic) {
using deque_t = deque<int, 8, true>;
// EXPECT_EQ (true, !is_span<deque_t>::value);
EXPECT_EQ (true, !is_std_array<deque_t>::value);
EXPECT_EQ (true, !std::is_array<deque_t>::value);
EXPECT_EQ (true, has_size_and_data<deque_t>::value);
}
// Test construction
TEST(Tdeque, contruct_atomic) {
deque<int, 8, true> q1;
deque<int, 8, true> q2{1, 2, 3, 4, 5, 6, 7, 8};
deque<int, 8, true> q3{1, 2, 3, 4, 5};
EXPECT_EQ (8UL, q1.capacity());
EXPECT_EQ (0UL, q1.size());
EXPECT_EQ (8UL, q2.capacity());
EXPECT_EQ (8UL, q2.size());
EXPECT_EQ (8UL, q3.capacity());
EXPECT_EQ (5UL, q3.size());
}
// simple push-pop functionality
TEST(Tdeque, push_pop_atomic) {
deque<int, 8, true> q1;
deque<int, 8, true> q2{1, 2, 3, 4, 5, 6, 7, 8};
q1.push_front(1);
q1.push_front(2);
EXPECT_EQ (1, q1.pop_back());
EXPECT_EQ (2, q1.pop_back());
q1.push_back(1);
q1.push_back(2);
EXPECT_EQ (1, q1.pop_front());
EXPECT_EQ (2, q1.pop_front());
q1.push_front(2);
q1.push_back(3);
q1.push_front(1);
q1.push_back(4);
for (int i=1 ; i<= 4 ; ++i)
EXPECT_EQ ((int)i, q1.pop_front());
}
// front-back
TEST(Tdeque, front_back_atomic) {
deque<int, 8, true> q1;
deque<int, 8, true> q2{1, 2, 3, 4, 5, 6, 7, 8};
q1.push_front(2);
q1.push_front(1);
q1.push_back(3);
q1.push_back(4);
EXPECT_EQ (1, q1.front());
EXPECT_EQ (4, q1.back());
EXPECT_EQ (1, q2.front());
EXPECT_EQ (8, q2.back());
}
// capacity
TEST(Tdeque, capacity_atomic) {
deque<int, 8, true> q1;
deque<int, 8, true> q2{1, 2, 3, 4, 5, 6, 7, 8};
q1.push_back(1);
q1.clear();
EXPECT_EQ (true, q1.empty());
EXPECT_EQ (true, q2.full());
EXPECT_EQ (8UL, q1.capacity());
EXPECT_EQ (8UL, q2.capacity());
EXPECT_EQ (0UL, q1.size());
EXPECT_EQ (8UL, q2.size());
q1.push_back(2);
EXPECT_EQ (1UL, q1.size());
q1.push_front(1);
EXPECT_EQ (2UL, q1.size());
q1.pop_back();
EXPECT_EQ (1UL, q1.size());
q1.pop_front();
EXPECT_EQ (0UL, q1.size());
}
// push-pop limits
TEST (Tdeque, push_pop_limits_atomic) {
deque<int, 8, true> q1;
deque<int, 8, true> q2{1, 2, 3, 4, 5, 6, 7, 8};
EXPECT_EQ (int{}, q1.pop_back());
EXPECT_EQ (0UL, q1.size());
EXPECT_EQ (true, q1.empty());
EXPECT_EQ (false, q1.full());
EXPECT_EQ (int{}, q1.pop_front());
EXPECT_EQ (0UL, q1.size());
EXPECT_EQ (true, q1.empty());
EXPECT_EQ (false, q1.full());
q2.push_front(0);
EXPECT_EQ (1, q2.front());
EXPECT_EQ (8, q2.back());
EXPECT_EQ (8UL, q2.size());
EXPECT_EQ (false, q2.empty());
EXPECT_EQ (true, q2.full());
q2.push_back(9);
EXPECT_EQ (1, q2.front());
EXPECT_EQ (8, q2.back());
EXPECT_EQ (8UL, q2.size());
EXPECT_EQ (false, q2.empty());
EXPECT_EQ (true, q2.full());
}
// iterators
TEST (Tdeque, iterators_atomic) {
deque<int, 8, true> q1{1, 2, 3, 4, 5, 6, 7, 8};
int check_it=1;
EXPECT_EQ (q1.begin().base(), q1.end().base());
EXPECT_NE (q1.begin().iter(), q1.end().iter());
EXPECT_EQ (1, *q1.begin());
EXPECT_EQ (true, (q1.begin() == ++q1.end())); // loop edge iterators
for (auto it = q1.begin() ; it != q1.end() ; ++it)
EXPECT_EQ(*it, check_it++);
EXPECT_EQ(9, check_it); // run through all
EXPECT_EQ (1, q1.front()); // queue stays intact
EXPECT_EQ (8, q1.back());
EXPECT_EQ (8UL, q1.size());
EXPECT_EQ (false, q1.empty());
EXPECT_EQ (true, q1.full());
q1.pop_front();
q1.pop_back();
check_it=2;
for (auto& it : q1)
EXPECT_EQ(it, check_it++);
EXPECT_EQ(8, check_it); // run through all
EXPECT_EQ (2, q1.front()); // queue stays intact
EXPECT_EQ (7, q1.back());
EXPECT_EQ (6UL, q1.size());
EXPECT_EQ (false, q1.empty());
EXPECT_EQ (false, q1.full());
deque<int, 8, true> q2;
q2.push_front(2);
q2.push_front(1);
q2.push_back(3);
q2.push_back(4);
q2.push_back(5);
check_it =1;
for (auto& it : q2)
EXPECT_EQ(it, check_it++);
EXPECT_EQ(6, check_it); // run through all
}
TEST (Tdeque, range_atomic) {
deque<int, 8, true> q1{1, 2, 3, 4, 5, 6, 7, 8};
int check_it=1;
for (auto& it : q1.contents())
EXPECT_EQ(it, check_it++);
EXPECT_EQ(9, check_it); // run through all
}
TEST(Tdeque, race) {
constexpr size_t N = 1000000;
deque<int, N, true> q;
int result[N];
auto push_front = [&](){
for (size_t i=1 ; i<=N ; ++i) q.push_front(i);
};
auto push_back = [&](){
for (size_t i=1 ; i<=N ; ++i) q.push_back(i);
};
auto pop_front = [&](){
for (size_t i=0 ; i<N ; ) {
result[i] = q.pop_front();
if (result[i] != int{})
++i;
}
};
auto pop_back = [&](){
for (size_t i=0 ; i<N ; ) {
result[i] = q.pop_back();
if (result[i] != int{})
++i;
}
};
std::memset(result, 0, sizeof result);
std::thread th1 (push_front);
std::thread th2 (pop_back);
th1.join();
th2.join();
for (size_t i=0 ; i<N ; ++i)
EXPECT_EQ (result[i], (int)i+1);
std::memset(result, 0, sizeof result);
std::thread th3 (push_back);
std::thread th4 (pop_front);
th3.join();
th4.join();
for (size_t i=0 ; i<N ; ++i)
EXPECT_EQ (result[i], (int)i+1);
}
}
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