BDD helpa. Makes test cases more readable.
TODO
output just the spec
```rust
kukumba!( #[scenario_01]
given "something" and "nothing else" { let something = "cucumba"; }
when "something happens" { let slice = &cucumba[3..]; } and "nothing else happens" { // ... }
then "only that should've happened" { asserteq!(slice, &"umba"); } and "everything should be okay" and "everyone should be happy" { asserteq!(something, "cucumba"); }
#[scenario_02] // ... ) ```