.size() Is const

/trainings/material/soup/cxx-code/stl-exercises/tests/test-sensor_repository_size_const.cpp

#include <gtest/gtest.h>

#include <sensor-random.h>
#include <sensor-const.h>
#include <sensor-repo.h>

TEST(stl_exercises_suite, sensor_repository_size_const)
{
    const SensorRepository repo;
    ASSERT_EQ(repo.size(), 0);
}