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#include "sdsl/sorted_stack_support.hpp"
#include "sdsl/util.hpp"
#include "gtest/gtest.h"
#include <string>
#include <random>
namespace
{
std::string temp_dir;
// The fixture for testing class sorted_stack_support.
class sorted_stack_support_test : public ::testing::Test
{
protected:
sorted_stack_support_test() {}
virtual ~sorted_stack_support_test() {}
virtual void SetUp() {}
virtual void TearDown() {}
};
void compare_stacks(std::stack<uint64_t>& exp, sdsl::sorted_stack_support& sss)
{
ASSERT_EQ(exp.size(), sss.size());
std::stack<uint64_t> tmp;
while (!exp.empty()) {
ASSERT_EQ(exp.top(), sss.top());
tmp.push(exp.top());
exp.pop();
sss.pop();
}
ASSERT_EQ(exp.size(), sss.size());
// Restore stacks
while (!tmp.empty()) {
exp.push(tmp.top());
sss.push(tmp.top());
tmp.pop();
}
}
//! Test Constructors
TEST_F(sorted_stack_support_test, constructors)
{
static_assert(std::is_copy_constructible<sdsl::sorted_stack_support>::value, "Type is not copy constructible");
static_assert(std::is_move_constructible<sdsl::sorted_stack_support>::value, "Type is not move constructible");
static_assert(std::is_copy_assignable<sdsl::sorted_stack_support>::value, "Type is not copy assignable");
static_assert(std::is_move_assignable<sdsl::sorted_stack_support>::value, "Type is not move assignable");
std::stack<uint64_t> exp;
sdsl::sorted_stack_support sss1(100000+10);
{
std::mt19937_64 rng;
std::uniform_int_distribution<uint64_t> distribution(0, 10);
auto dice = bind(distribution, rng);
for (uint64_t k=0; k<100000; ++k) {
uint64_t value = k+dice();
if (exp.empty() or exp.top() < value) {
exp.push(value);
sss1.push(value);
}
}
}
// Copy-constructor
sdsl::sorted_stack_support sss2(sss1);
compare_stacks(exp, sss2);
// Move-constructor
sdsl::sorted_stack_support sss3(std::move(sss2));
compare_stacks(exp, sss3);
// ASSERT_EQ((uint64_t)0, sss2.size());
// Copy-Assign
sdsl::sorted_stack_support sss4(0);
sss4 = sss3;
compare_stacks(exp, sss4);
// Move-Assign
sdsl::sorted_stack_support sss5(0);
sss5 = std::move(sss4);
compare_stacks(exp, sss5);
// ASSERT_EQ((uint64_t)0, sss4.size());
}
//! Test Operations push, top and pop
TEST_F(sorted_stack_support_test, push_top_and_pop)
{
for (uint64_t i=0; i<20; ++i) {
std::mt19937_64 rng(i);
std::uniform_int_distribution<uint64_t> distribution(0, i*i);
auto dice = bind(distribution, rng);
std::stack<uint64_t> exp;
sdsl::sorted_stack_support sss(1000000+i*i);
ASSERT_TRUE(sss.empty());
for (uint64_t k=0; k<1000000; ++k) {
ASSERT_EQ(exp.size(), sss.size());
uint64_t value = k+dice();
if (exp.empty()) {
exp.push(value);
sss.push(value);
} else {
ASSERT_EQ(exp.top(), sss.top());
if (exp.top() >= value) {
exp.pop();
sss.pop();
} else {
exp.push(value);
sss.push(value);
}
}
}
}
}
//! Test Serialize and Load
TEST_F(sorted_stack_support_test, serialize_and_load)
{
std::string file_name = temp_dir+"/sorted_stack_support";
std::stack<uint64_t> exp;
{
std::mt19937_64 rng;
std::uniform_int_distribution<uint64_t> distribution(0, 10);
auto dice = bind(distribution, rng);
sdsl::sorted_stack_support sss(1000000+10);
for (uint64_t k=0; k<1000000; ++k) {
uint64_t value = k+dice();
if (exp.empty() or exp.top() < value) {
exp.push(value);
sss.push(value);
}
}
sdsl::store_to_file(sss, file_name);
}
{
sdsl::sorted_stack_support sss(0);
sdsl::load_from_file(sss, file_name);
compare_stacks(exp, sss);
}
sdsl::remove(file_name);
}
} // namespace
int main(int argc, char** argv)
{
::testing::InitGoogleTest(&argc, argv);
if (argc < 2) {
// LCOV_EXCL_START
std::cout << "Usage: " << argv[0] << " tmp_dir" << std::endl;
return 1;
// LCOV_EXCL_STOP
}
temp_dir = argv[1];
return RUN_ALL_TESTS();
}
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