Entity player; // create a new entity player.AddAura(Aura::FIRE_RESISTANCE); // add a fire resistance aura to the entity assert(player.GetAura() == Aura::FIRE_RESISTANCE); // check that the aura is retrieved correctlyIn this example, we create a new entity and add a fire resistance aura to it using the `AddAura` function. We then retrieve the aura of the player entity using `GetAura` and check that it is equal to `Aura::FIRE_RESISTANCE` using the `assert` function. Package Library: CppUnit is an open-source C++ unit testing framework that provides a basic test framework, assertions, and a set of test runners.