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rmq_test.cpp
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rmq_test.cpp
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#include <stack>
#include <string>
#include <vector>
#include <sdsl/rmq_succinct_sada.hpp>
#include <sdsl/rmq_succinct_sct.hpp>
#include "common.hpp"
#include <gtest/gtest.h>
using namespace std;
using namespace sdsl;
namespace
{
typedef vector<uint64_t> tVUI;
string test_file;
string temp_dir;
string temp_file;
template <class T>
class rmq_test : public ::testing::Test
{};
using testing::Types;
typedef Types<sdsl::rmq_succinct_sct<>, sdsl::rmq_succinct_sada<>> Implementations;
TYPED_TEST_SUITE(rmq_test, Implementations, );
TYPED_TEST(rmq_test, construct_and_store)
{
static_assert(sdsl::util::is_regular<TypeParam>::value, "Type is not regular");
int_vector<> v;
load_from_file(v, test_file);
TypeParam rmq(&v);
ASSERT_TRUE(sdsl::store_to_file(rmq, temp_file));
}
// helper class for next test
class state
{
public:
uint64_t l, r; // left and right border of interval
uint64_t idx; // index of the min value
uint64_t min; // min value in the interval
state(uint64_t fl = 0, uint64_t fr = 0, uint64_t fidx = 0, uint64_t fmin = 0) : l(fl), r(fr), idx(fidx), min(fmin)
{}
};
//! Test range minimum queries
TYPED_TEST(rmq_test, rmq_load_and_query)
{
int_vector<> v;
ASSERT_TRUE(load_from_file(v, test_file));
TypeParam rmq;
ASSERT_TRUE(load_from_file(rmq, temp_file));
ASSERT_EQ(v.size(), rmq.size());
if (rmq.size() > 0)
{
stack<state> s;
uint64_t idx = rmq(0, rmq.size() - 1);
ASSERT_TRUE(idx < rmq.size());
s.push(state(0, rmq.size() - 1, idx, v[idx]));
while (!s.empty())
{
state st = s.top();
s.pop();
if (st.l < st.idx)
{
idx = rmq(st.l, st.idx - 1);
ASSERT_TRUE(idx >= st.l);
ASSERT_TRUE(idx <= st.idx - 1);
ASSERT_TRUE(v[idx] >= v[st.idx]) << "v[" << idx << "]=" << v[idx] << " < "
<< "v[" << st.idx << "]=" << v[st.idx] << endl
<< "[" << st.l << "," << st.r << "]" << endl;
s.push(state(st.l, st.idx - 1, idx, v[idx]));
}
if (st.idx < st.r)
{
idx = rmq(st.idx + 1, st.r);
ASSERT_TRUE(idx >= st.idx + 1);
ASSERT_TRUE(idx <= st.r);
ASSERT_TRUE(v[idx] >= v[st.idx]) << "v[" << idx << "]=" << v[idx] << " < "
<< "v[" << st.idx << "]=" << v[st.idx] << endl
<< "[" << st.l << "," << st.r << "]" << endl;
s.push(state(st.idx + 1, st.r, idx, v[idx]));
}
}
}
}
//! Test range minimum queries
TYPED_TEST(rmq_test, rmq_load_and_move_and_query)
{
int_vector<> v;
ASSERT_TRUE(load_from_file(v, test_file));
TypeParam rmq_load;
ASSERT_TRUE(load_from_file(rmq_load, temp_file));
TypeParam rmq = std::move(rmq_load);
ASSERT_EQ(v.size(), rmq.size());
if (rmq.size() > 0)
{
stack<state> s;
uint64_t idx = rmq(0, rmq.size() - 1);
ASSERT_TRUE(idx < rmq.size());
s.push(state(0, rmq.size() - 1, idx, v[idx]));
while (!s.empty())
{
state st = s.top();
s.pop();
if (st.l < st.idx)
{
idx = rmq(st.l, st.idx - 1);
ASSERT_TRUE(idx >= st.l);
ASSERT_TRUE(idx <= st.idx - 1);
ASSERT_TRUE(v[idx] >= v[st.idx]) << "v[" << idx << "]=" << v[idx] << " < "
<< "v[" << st.idx << "]=" << v[st.idx] << endl
<< "[" << st.l << "," << st.r << "]" << endl;
s.push(state(st.l, st.idx - 1, idx, v[idx]));
}
if (st.idx < st.r)
{
idx = rmq(st.idx + 1, st.r);
ASSERT_TRUE(idx >= st.idx + 1);
ASSERT_TRUE(idx <= st.r);
ASSERT_TRUE(v[idx] >= v[st.idx]) << "v[" << idx << "]=" << v[idx] << " < "
<< "v[" << st.idx << "]=" << v[st.idx] << endl
<< "[" << st.l << "," << st.r << "]" << endl;
s.push(state(st.idx + 1, st.r, idx, v[idx]));
}
}
}
}
#if SDSL_HAS_CEREAL
template <typename in_archive_t, typename out_archive_t, typename TypeParam>
void do_serialisation(TypeParam const & l)
{
{
std::ofstream os{temp_file, std::ios::binary};
out_archive_t oarchive{os};
oarchive(l);
}
TypeParam in_l{};
{
std::ifstream is{temp_file, std::ios::binary};
in_archive_t iarchive{is};
iarchive(in_l);
}
EXPECT_EQ(l, in_l);
}
TYPED_TEST(rmq_test, cereal)
{
if (temp_dir != "@/")
{
TypeParam rmq;
ASSERT_TRUE(load_from_file(rmq, temp_file));
do_serialisation<cereal::BinaryInputArchive, cereal::BinaryOutputArchive>(rmq);
do_serialisation<cereal::PortableBinaryInputArchive, cereal::PortableBinaryOutputArchive>(rmq);
do_serialisation<cereal::JSONInputArchive, cereal::JSONOutputArchive>(rmq);
do_serialisation<cereal::XMLInputArchive, cereal::XMLOutputArchive>(rmq);
}
}
#endif // SDSL_HAS_CEREAL
TYPED_TEST(rmq_test, delete_)
{
sdsl::remove(temp_file);
}
} // namespace
int main(int argc, char ** argv)
{
::testing::InitGoogleTest(&argc, argv);
init_2_arg_test(argc, argv, "RMQ", test_file, temp_dir, temp_file);
return RUN_ALL_TESTS();
}