# Naive engine: Rust

The throwaway engine for [Module 0, The Rewrite Trap](../../course/00-rewrite-trap/lesson.md). It is written the obvious way on purpose: minions are shared references, damage applies at once, triggers fire inline, and a Deathrattle runs the instant a minion's Health reaches 0. Cards are defined inside the engine (`make_minion` and `cast` in `src/lib.rs`).

Run the tests from this directory:

```
cargo test
```

You should see two passing tests:

- `test_00_naive_runs` passes normally.
- `test_00_real_rules_whirlwind_order - should panic ... ok` is expected to fail. It states the real game's event order, which this engine cannot produce, so it is marked `#[should_panic]`. To see the order the engine actually produces, delete the `#[should_panic(...)]` line and run `cargo test` again.

Do not use this crate in Module 1. Your real engine starts from `workspace-template/rust/`.