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#[macro_use]
extern crate derive_destructure2;
use std::cell::Cell;
use std::rc::Rc;
#[derive(destructure, remove_trait_impls)]
struct DropChecker(Rc<Cell<bool>>);
impl DropChecker {
fn new() -> Self {
DropChecker(Rc::new(Cell::new(false)))
}
}
impl Drop for DropChecker {
fn drop(&mut self) {
let dropped = &self.0;
if dropped.get() {
panic!("Dropped twice!");
}
dropped.set(true)
}
}
#[test]
fn test_droptest_normal_drop() {
let drop_checker = DropChecker::new();
let dropped_rc_clone = Rc::clone(&drop_checker.0);
assert_eq!(dropped_rc_clone.get(), false);
drop(drop_checker);
assert_eq!(dropped_rc_clone.get(), true);
}
#[test]
fn test_droptest_destructure() {
let drop_checker = DropChecker::new();
let dropped_rc_clone = Rc::clone(&drop_checker.0);
assert_eq!(dropped_rc_clone.get(), false);
let (dropped_rc,) = drop_checker.destructure();
assert_eq!(dropped_rc.get(), false);
assert_eq!(dropped_rc_clone.get(), false);
}
#[test]
fn test_droptest_remove_trait_impls() {
let drop_checker = DropChecker::new();
let dropped_rc_clone = Rc::clone(&drop_checker.0);
assert_eq!(dropped_rc_clone.get(), false);
let custom_drop_removed = drop_checker.remove_trait_impls();
assert_eq!(custom_drop_removed.0.get(), false);
assert_eq!(dropped_rc_clone.get(), false);
}
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