tests

Systems are glue; the logic is plain functions. So most of a mind is tested like any code: values in, values out, no world.

src/body/
├── odometry.system.rs
├── odometry.rs           # Rust tests sit inside it, under #[cfg(test)]
└── tests/
    └── imu.test.ts

Language	Tests live	Written with
TypeScript	a `tests/` folder beside the code	`bun:test`
Rust	in the file, under `#[cfg(test)]`	`#[test]`
Python	a `tests/` folder beside the code	`pytest`

bun test     # runs all three

Generated types import as they do anywhere, so a test builds exactly the values a system would see.

What tests can't prove

A test proves the arithmetic, not the mind: that a belief arrives when it should, or that the whole holds together over a minute of a real body. For that, run the mind and ask the recording with axonl debug.