Derive Macro World

#[derive(World)]
{
    // Attributes available to this derive:
    #[world]
}

Available on crate feature macros only.

Derive macro for implementing a World trait.

Example

#[derive(cucumber::World)]
#[world(init = Self::new)] // optional, uses `Default::default()` if omitted
struct World(usize);

impl World {
    fn new() -> Self {
        Self(42)
    }
}

Attribute arguments

• #[world(init = path::to::fn)]

  Path to a function to be used for a World instance construction. Specified function can be either sync or async, and either fallible (return [Result]) or infallible (return World itself). In case no function is specified, the [Default::default()] will be used for construction.