ts_hash_map_unittest.cpp

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/* +---------------------------------------------------------------------------+
   |                     Mobile Robot Programming Toolkit (MRPT)               |
   |                          http://www.mrpt.org/                             |
   |                                                                           |
   | Copyright (c) 2005-2017, Individual contributors, see AUTHORS file        |
   | See: http://www.mrpt.org/Authors - All rights reserved.                   |
   | Released under BSD License. See details in http://www.mrpt.org/License    |
   +---------------------------------------------------------------------------+ */

#include <mrpt/utils/ts_hash_map.h>
#include <gtest/gtest.h>

template <typename T>
void simple_test_hash_string()
{
        T h1, h2;
        mrpt::utils::reduced_hash("prueba1", h1);
        mrpt::utils::reduced_hash("prueba2", h2);
        EXPECT_NE(h1, h2);
}

TEST(ts_hash_map, string_hash_u8) {
        simple_test_hash_string<uint8_t>();
}
TEST(ts_hash_map, string_hash_u16) {
        simple_test_hash_string<uint16_t>();
}
TEST(ts_hash_map, string_hash_u32) {
        simple_test_hash_string<uint32_t>();
}
TEST(ts_hash_map, string_hash_u64) {
        simple_test_hash_string<uint64_t>();
}


TEST(ts_hash_map, stdstring_key)
{
        mrpt::utils::ts_hash_map<std::string, double> m;

        EXPECT_TRUE(m.empty());

        m["numero"] = 2.3;
        EXPECT_FALSE(m.empty());
        m.clear();
        EXPECT_TRUE(m.empty());

        m["uno"] = 1.0;
        m["dos"] = 2.0;
        m["tres"] = 3.0;

        EXPECT_EQ(1.0, m["uno"]);
        EXPECT_EQ(2.0, m["dos"]);
        EXPECT_EQ(3.0, m["tres"]);

        m["tres"]++;
        EXPECT_EQ(4.0, m["tres"]) << "Fail after ++ operator applied to reference [].";

        double num = .0;
        for (const auto &e : m)
                num += e.second;
        EXPECT_NEAR(num, 7.0, 1e-10) << "Fail after visiting and summing all entries";

        {
                const auto &it = m.find("pepe");
                EXPECT_TRUE(it == m.end());
        }

        {
                const auto &it = m.find("uno");
                EXPECT_TRUE( it->second==1.0 );
        }
}