Crate stub_trait

Macro to implement stub object for a trait.

Usage

use stub_trait::stub;

#[stub]
trait Animal {
    fn feed(&self, quantity: usize) -> &str;
}

let animal = StubAnimal::new().with_stub_of_feed(|i, quantity| {
    if i == 0 {
        assert_eq!(quantity, 10);
        "sad!"
    } else if i == 1 {
        assert_eq!(quantity, 20);
        "happy!"
    } else {
        panic!("too much invocations!")
    }
});
assert_eq!(animal.feed(10), "sad!");
assert_eq!(animal.feed(20), "happy!");
assert_eq!(animal.count_calls_of_feed(), 2);

Attribute Macros

stub