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enum-as-inner 0.3.4

A proc-macro for deriving inner field accessor functions on enums.
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use enum_as_inner::EnumAsInner;

#[allow(dead_code)]
#[derive(Debug, Clone, Copy, EnumAsInner)]
enum WithGenerics<T: Clone + Copy> {
    A(T),
    B(T),
}

#[test]
fn with_generics() {
    let mut with_generics = WithGenerics::A(100);

    assert!(with_generics.as_a().is_some());
    assert!(with_generics.as_b().is_none());

    assert_eq!(with_generics.into_a().unwrap(), 100);
    assert_eq!(*with_generics.as_a().unwrap(), 100);
    assert_eq!(*with_generics.as_a_mut().unwrap(), 100);

    assert!(with_generics.into_b().is_err());
    assert!(with_generics.as_b().is_none());
    assert!(with_generics.as_b_mut().is_none());
}