ref_wrapper 0.2.2

Wrapper of dynamically borrowed data.
Documentation 
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mod common;

pub use common::*;
use core::cell::RefCell;
use core::ops::{Deref, DerefMut};
use drop_tracer::DropTracer;
use ref_wrapper::RefWrapMut;

#[test]
fn deref() {
    let src = RefCell::new(samples());
    let target = RefWrapMut::new(src.borrow_mut(), |x| VecEdit::new(x));

    let result = target.deref();

    assert_eq!(*result.base(), samples());
    assert!(src.try_borrow().is_err());
    assert!(src.try_borrow_mut().is_err());
}

#[test]
fn deref_mut() {
    let src = RefCell::new(samples());
    let mut target = RefWrapMut::new(src.borrow_mut(), |x| VecEdit::new(x));

    let result = target.deref_mut();

    result.add(1);
    let expected_base = Vec::from_iter(samples().iter().map(|x| x + 1));
    assert_eq!(*target.base(), expected_base);
    assert!(src.try_borrow().is_err());
    assert!(src.try_borrow_mut().is_err());
}

#[test]
fn test_drop_count() {
    DropTracer::test_drop(|tracer| {
        let src = RefCell::new(tracer.new_item());
        RefWrapMut::new(src.borrow_mut(), |_| "dummy");
    });
}