ts_hash_map_unittest.cpp

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/* +------------------------------------------------------------------------+
   |                     Mobile Robot Programming Toolkit (MRPT)            |
   |                          https://www.mrpt.org/                         |
   |                                                                        |
   | Copyright (c) 2005-2020, Individual contributors, see AUTHORS file     |
   | See: https://www.mrpt.org/Authors - All rights reserved.               |
   | Released under BSD License. See: https://www.mrpt.org/License          |
   +------------------------------------------------------------------------+ */

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

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