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#include "sdsl/nn_dict_dynamic.hpp"
#include "sdsl/nearest_neighbour_dictionary.hpp"
#include "sdsl/util.hpp"
#include "gtest/gtest.h"
#include <string>
#include <random>
namespace
{
std::string temp_dir;
// The fixture for testing class nn_dict_dynamic.
class nn_dict_dynamic_test : public ::testing::Test
{
protected:
nn_dict_dynamic_test() {}
virtual ~nn_dict_dynamic_test() {}
virtual void SetUp() {}
virtual void TearDown() {}
};
void compare_bv_and_nndd(const sdsl::bit_vector& bv, const sdsl::nn_dict_dynamic& nndd)
{
sdsl::nearest_neighbour_dictionary<32> exp(bv);
uint64_t first_one = exp.select(1);
uint64_t last_one = exp.select(exp.rank(exp.size()));
for (uint64_t i=0; i<first_one; ++i) {
ASSERT_EQ(exp.size(), nndd.prev(i));
ASSERT_EQ(exp.next(i), nndd.next(i));
}
for (uint64_t i=first_one; i<=last_one; ++i) {
ASSERT_EQ(exp.prev(i), nndd.prev(i));
ASSERT_EQ(exp.next(i), nndd.next(i));
}
for (uint64_t i=last_one+1; i<exp.size(); ++i) {
ASSERT_EQ(exp.prev(i), nndd.prev(i));
ASSERT_EQ(exp.size(), nndd.next(i));
}
}
//! Test Constructors
TEST_F(nn_dict_dynamic_test, constructors)
{
static_assert(sdsl::util::is_regular<sdsl::nn_dict_dynamic>::value, "Type is not regular");
uint64_t testsize = 100000;
sdsl::bit_vector bv(testsize, 0);
sdsl::nn_dict_dynamic nndd(testsize);
// Fill nndd
std::mt19937_64 rng;
std::uniform_int_distribution<uint64_t> distribution(0, testsize-1);
auto dice = bind(distribution, rng);
for (uint64_t i=0; i<testsize/4; ++i) {
uint64_t value = dice();
if (bv[value]) {
bv[value] = 0;
nndd[value] = 0;
} else {
bv[value] = 1;
nndd[value] = 1;
}
}
// Copy-constructor
sdsl::nn_dict_dynamic nndd2(nndd);
compare_bv_and_nndd(bv, nndd2);
// Move-constructor
sdsl::nn_dict_dynamic nndd3(std::move(nndd2));
compare_bv_and_nndd(bv, nndd3);
ASSERT_EQ((uint64_t)0, nndd2.size());
// Copy-Assign
sdsl::nn_dict_dynamic nndd4;
nndd4 = nndd3;
compare_bv_and_nndd(bv, nndd4);
// Move-Assign
sdsl::nn_dict_dynamic nndd5;
nndd5 = std::move(nndd4);
compare_bv_and_nndd(bv, nndd5);
ASSERT_EQ((uint64_t)0, nndd4.size());
}
//! Test Operations next and prev
TEST_F(nn_dict_dynamic_test, next_and_prev)
{
uint64_t testsize = 100000;
sdsl::bit_vector bv(testsize, 0);
sdsl::nn_dict_dynamic nndd(testsize);
for (uint64_t ones=1; ones<testsize; ones *= 2) {
std::mt19937_64 rng(ones);
std::uniform_int_distribution<uint64_t> distribution(0, testsize-1);
auto dice = bind(distribution, rng);
for (uint64_t i=0; i<ones; ++i) {
uint64_t value = dice();
if (bv[value]) {
bv[value] = 0;
nndd[value] = 0;
} else {
bv[value] = 1;
nndd[value] = 1;
}
}
bv[testsize/4] = 1;
nndd[testsize/4] = 1;
bv[3*testsize/4] = 1;
nndd[3*testsize/4] = 1;
compare_bv_and_nndd(bv, nndd);
}
}
//! Test Serialize and Load
TEST_F(nn_dict_dynamic_test, serialize_and_load)
{
std::string file_name = temp_dir+"/nn_dict_dynamic";
uint64_t testsize = 100000;
sdsl::bit_vector bv(testsize, 0);
{
std::mt19937_64 rng;
std::uniform_int_distribution<uint64_t> distribution(0, testsize-1);
auto dice = bind(distribution, rng);
sdsl::nn_dict_dynamic nndd(testsize);
for (uint64_t i=0; i<testsize/4; ++i) {
uint64_t value = dice();
if (bv[value]) {
bv[value] = 0;
nndd[value] = 0;
} else {
bv[value] = 1;
nndd[value] = 1;
}
}
sdsl::store_to_file(nndd, file_name);
}
{
sdsl::nn_dict_dynamic nndd(0);
sdsl::load_from_file(nndd, file_name);
compare_bv_and_nndd(bv, nndd);
}
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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