Files
dioxus/packages/generational-box/tests/reference_counting.rs
T
Evan AlmloffandJonathan Kelley 58c41f8561 Stores: Externally tracked state and reactive collections (#4483)
* map signals mutably

* boxed signals

* remove mutable borrow type from boxed writable

* improve map mut example

* restore boxed_mut helper

* make boxed readable/writable types copy

* Move away from the ReadOnlySignal alias in examples

* automatically convert Write

* Fix some tests

* ReadSignal and WriteSignal

* move read only signal alias

* make maps copy

* store prototype

* implement derive macro

* Handle generics in the derive macro

* Make Selector boxable

* derive boxed conversion

* Get rid of store type

* Remove hardcoded type from derive macro

* selector -> store

* Refactor store implementation

* more vec methods

* todo mvc store example

* Implement Storable for HashMap

* fix write

* restore sorting logic in todomvc

* derive readable and writable

* improve todomvc store example

* Result store

* Option store

* collect dead subscribers

* fix clippy and formatting

* recognize some common foreign types automatically

* fix foreign stores in props

* slice and array selectors

* clean up store example

* writable is child owned

* box selector

* read and write to builtins

* re-use the proc macro in the derive macro

* Switch to a extension trait based approach

* switch to extension traits in the derive macro

* transposed method

* derive enums

* Expose Store::new

* remove stores from the prelude

* More consistent naming scheme for SelectorScope methods

* document hashmap methods

* document index extension

* document option ext

* document result ext

* document slice extension

* document the vec extension

* make more methods borrow the store mutably

* Move to impls to have higher priority over the builtin write extension traits

* fix deadlock

* finish stores documentation

* Document the store macro

* cleanup docs and organization

* finish derive docs

* fix typo

* fix clippy

* fix doc tests

* fix derive macro with generics

* fix clippy

* test and fix empty structs

* clean up todomvc store example

* default to a boxed store writer to make it easier to type when providing to the context api

* fix cargo doc

* fix clippy in store example

* relax generational box lifetime bounds

* relax bounds

* relax signal bounds

* fix compilation

* read store

* relax bounds on default store impls

* fix enum derive

* Convert to readsignal and writesignal automatically

* simplify type matching logic

* add write store

* unsized stores

* shrink the path vec type

* use more concrete types

* remove opaque types

* remove copy bounds

* use lens as generic name everywhere

* more consistent borrow semantics

* use a concrete type for the signal metadata and mention references in the map docs

* improve todomvc store docs

* document store derive macro internals

* refactor macro

* improve selector node documentation

* fix clippy

* add btreemap

* fix doc tests

* more option methods

* fix doc

* fix clippy

* add a bunch more result methods

* add a bunch of bounds to the iterators

* fix clippy

* remove option from subscribers

* add store macro to generate extension traits

* fix store example

* fix deadlock

* fix docs

* fix doc tests

* fix clippy

* add stores to public api

* add store macro, and then update todomvc_store example

---------

Co-authored-by: Jonathan Kelley <jkelleyrtp@gmail.com>
2025-08-05 11:30:21 -07:00

62 lines
2.1 KiB
Rust

use generational_box::{Storage, SyncStorage, UnsyncStorage};
#[test]
fn reference_counting() {
fn reference_counting<S: Storage<String> + 'static>() {
let data = String::from("hello world");
let reference;
{
let outer_owner = S::owner();
{
// create an owner
let owner = S::owner();
// insert data into the store
let original = owner.insert_rc(data);
reference = outer_owner.insert_reference(original).unwrap();
// The reference should point to the value immediately
assert_eq!(&*reference.read(), "hello world");
// Original is dropped
}
// The reference should still point to the value
assert_eq!(&*reference.read(), "hello world");
}
// Now that all references are dropped, the value should be dropped
assert!(reference.try_read().is_err());
}
reference_counting::<UnsyncStorage>();
reference_counting::<SyncStorage>();
}
#[test]
fn move_reference_in_place() {
fn move_reference_in_place<S: Storage<String> + 'static>() {
let data1 = String::from("hello world");
let data2 = String::from("hello world 2");
// create an owner
let original_owner = S::owner();
// insert data into the store
let original = original_owner.insert_rc(data1.clone());
let reference = original_owner.insert_reference(original).unwrap();
// The reference should point to the original value
assert_eq!(&*reference.read(), &data1);
let new_owner = S::owner();
// Move the reference in place
let new = new_owner.insert_rc(data2.clone());
reference.point_to(new).unwrap();
// The reference should point to the new value
assert_eq!(&*reference.read(), &data2);
// make sure both got dropped
drop(original_owner);
drop(new_owner);
assert!(original.try_read().is_err());
assert!(new.try_read().is_err());
}
move_reference_in_place::<UnsyncStorage>();
move_reference_in_place::<SyncStorage>();
}