TestUniqueMeshId.cpp
/**
* \file
* \copyright
* Copyright (c) 2012-2021, OpenGeoSys Community (http://www.opengeosys.org)
* Distributed under a Modified BSD License.
* See accompanying file LICENSE.txt or
* http://www.opengeosys.org/project/license
*/
#include <gtest/gtest.h>
#include "MeshLib/Mesh.h"
using namespace MeshLib;
TEST(MeshLib, UniqueMeshId)
{
// Create first mesh and get the current counter value.
Mesh m0("first", std::vector<Node*>(), std::vector<Element*>());
std::size_t const counter_value = m0.getID();
EXPECT_GE(counter_value, 0u);
//
// Test mesh counter increments.
//
auto m1 = std::make_unique<Mesh>("second", std::vector<Node*>(),
std::vector<Element*>());
ASSERT_EQ(counter_value + std::size_t(1), m1->getID());
Mesh m2("third", std::vector<Node*>(), std::vector<Element*>());
ASSERT_EQ(counter_value + std::size_t(2), m2.getID());
m1.reset();
ASSERT_EQ(counter_value + std::size_t(2), m2.getID());
Mesh m3("fourth", std::vector<Node*>(), std::vector<Element*>());
ASSERT_EQ(counter_value + std::size_t(3), m3.getID());
// Copy mesh keeps also increments the counter.
Mesh m4 = m0;
ASSERT_EQ(counter_value + std::size_t(4), m4.getID());
}