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#include "sdsl/inv_perm_support.hpp"
#include "sdsl/util.hpp"
#include "gtest/gtest.h"
#include <vector>
#include <string>
#include <random>
#include <algorithm>
namespace
{
typedef sdsl::int_vector<>::size_type size_type;
typedef sdsl::int_vector<>::value_type value_type;
std::string temp_dir;
// The fixture for testing class int_vector.
class inv_perm_support_test : public ::testing::Test
{
protected:
inv_perm_support_test() {}
virtual ~inv_perm_support_test() {}
virtual void SetUp()
{
for (size_t z=0; z < (1ULL<<20); z=(z+1)*2) {
sdsl::int_vector<> iv(z);
sdsl::util::set_to_id(iv);
random_shuffle(iv.begin(), iv.end());
perms.emplace_back(iv);
}
for (size_t i=0; i<perms.size(); ++i) {
auto iiv = perms[i];
for (size_t j=0; j<perms[i].size(); ++j) {
iiv[perms[i][j]] = j;
}
inv_perms.emplace_back(iiv);
}
}
virtual void TearDown() {}
std::vector<sdsl::int_vector<>> perms;
std::vector<sdsl::int_vector<>> inv_perms;
};
void compare(const sdsl::int_vector<>& inv_perm, const sdsl::inv_perm_support<>& ips)
{
ASSERT_EQ(inv_perm.size(), ips.size());
for (size_t j=0; j<ips.size(); ++j) {
ASSERT_EQ(inv_perm[j], ips[j]);
}
}
//! Test Constructors
TEST_F(inv_perm_support_test, constructors)
{
static_assert(sdsl::util::is_regular<sdsl::inv_perm_support<>>::value, "Type is not regular");
for (size_t i=0; i<perms.size(); ++i) {
// Constructor
sdsl::inv_perm_support<> ips(&perms[i]);
compare(inv_perms[i], ips);
// Copy-constructor
sdsl::inv_perm_support<> ips2(ips);
compare(inv_perms[i], ips2);
// Move-constructor
sdsl::inv_perm_support<> ips3(std::move(ips2));
compare(inv_perms[i], ips3);
// Copy-assign
sdsl::inv_perm_support<> ips4;
ips4 = ips;
compare(inv_perms[i], ips4);
// Move-assign
sdsl::inv_perm_support<> ips5;
ips5 = std::move(ips);
compare(inv_perms[i], ips5);
}
}
TEST_F(inv_perm_support_test, swap)
{
for (size_type i=0; i < perms.size(); ++i) {
sdsl::inv_perm_support<> ips(&perms[i]);
{
sdsl::inv_perm_support<> tmp;
ASSERT_EQ((size_type)0, tmp.size());
sdsl::util::swap_support(tmp, ips,
&perms[i], (const sdsl::int_vector<>*)nullptr);
ASSERT_EQ((size_type)0, ips.size());
compare(inv_perms[i], tmp);
}
}
}
TEST_F(inv_perm_support_test, serialize_and_load)
{
for (size_type i=0; i < perms.size(); ++i) {
std::string file_name = temp_dir+"/inv_perm_support";
{
sdsl::inv_perm_support<> ips(&perms[i]);
sdsl::store_to_file(ips, file_name);
}
sdsl::inv_perm_support<> ips2;
sdsl::load_from_file(ips2, file_name);
ips2.set_vector(&perms[i]);
compare(inv_perms[i], ips2);
sdsl::remove(file_name);
}
}
TEST_F(inv_perm_support_test, iterator_test)
{
for (size_type i=0; i < perms.size(); ++i) {
sdsl::inv_perm_support<> ips(&perms[i]);
auto iv_it = inv_perms[i].begin();
auto ips_it = ips.begin();
while (ips_it != ips.end()) {
ASSERT_TRUE(iv_it != inv_perms[i].end());
ASSERT_EQ(*iv_it, *ips_it);
++iv_it;
++ips_it;
}
}
}
} // 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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