dioxus/packages/core/tests/miri_stress.rs

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#![allow(non_snake_case)]
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use std::rc::Rc;
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use dioxus::prelude::*;
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/// This test checks that we should release all memory used by the virtualdom when it exits.
///
/// When miri runs, it'll let us know if we leaked or aliased.
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#[test]
fn test_memory_leak() {
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fn app(cx: Scope) -> Element {
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let val = cx.generation();
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cx.spawn(async {
tokio::time::sleep(std::time::Duration::from_millis(100000)).await;
});
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if val == 2 || val == 4 {
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return cx.render(rsx!(()));
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}
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let name = cx.use_hook(|| String::from("numbers: "));
name.push_str("123 ");
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cx.render(rsx!(
div { "Hello, world!" }
Child {}
Child {}
Child {}
Child {}
Child {}
Child {}
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BorrowedChild { name: name }
BorrowedChild { name: name }
BorrowedChild { name: name }
BorrowedChild { name: name }
BorrowedChild { name: name }
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))
}
#[derive(Props)]
struct BorrowedProps<'a> {
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name: &'a str,
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}
fn BorrowedChild<'a>(cx: Scope<'a, BorrowedProps<'a>>) -> Element {
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cx.render(rsx! {
div {
"goodbye {cx.props.name}"
Child {}
Child {}
}
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})
}
fn Child(cx: Scope) -> Element {
render!(div { "goodbye world" })
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}
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let mut dom = VirtualDom::new(app);
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_ = dom.rebuild();
for _ in 0..5 {
dom.mark_dirty(ScopeId(0));
_ = dom.render_immediate();
}
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}
#[test]
fn memo_works_properly() {
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fn app(cx: Scope) -> Element {
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let val = cx.generation();
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if val == 2 || val == 4 {
return cx.render(rsx!(()));
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}
let name = cx.use_hook(|| String::from("asd"));
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cx.render(rsx!(
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div { "Hello, world! {name}" }
Child { na: "asdfg".to_string() }
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))
}
#[derive(PartialEq, Props)]
struct ChildProps {
na: String,
}
fn Child(cx: Scope<ChildProps>) -> Element {
render!(div { "goodbye world" })
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}
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let mut dom = VirtualDom::new(app);
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_ = dom.rebuild();
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// todo!()
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// dom.hard_diff(ScopeId(0));
// dom.hard_diff(ScopeId(0));
// dom.hard_diff(ScopeId(0));
// dom.hard_diff(ScopeId(0));
// dom.hard_diff(ScopeId(0));
// dom.hard_diff(ScopeId(0));
// dom.hard_diff(ScopeId(0));
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}
#[test]
fn free_works_on_root_hooks() {
/*
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On Drop, scopearena drops all the hook contents. and props
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*/
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#[derive(PartialEq, Clone, Props)]
struct AppProps {
inner: Rc<String>,
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}
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fn app(cx: Scope<AppProps>) -> Element {
let name: &AppProps = cx.use_hook(|| cx.props.clone());
render!(child_component { inner: name.inner.clone() })
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}
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fn child_component(cx: Scope<AppProps>) -> Element {
render!(div { "{cx.props.inner}" })
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}
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let ptr = Rc::new("asdasd".to_string());
let mut dom = VirtualDom::new_with_props(app, AppProps { inner: ptr.clone() });
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let _ = dom.rebuild();
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// ptr gets cloned into props and then into the hook
assert_eq!(Rc::strong_count(&ptr), 4);
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drop(dom);
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assert_eq!(Rc::strong_count(&ptr), 1);
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}
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// #[test]
// fn old_props_arent_stale() {
// fn app(cx: Scope) -> Element {
// dbg!("rendering parent");
// let cnt = cx.use_hook(|| 0);
// *cnt += 1;
// if *cnt == 1 {
// render!(div { Child { a: "abcdef".to_string() } })
// } else {
// render!(div { Child { a: "abcdef".to_string() } })
// }
// }
// #[derive(Props, PartialEq)]
// struct ChildProps {
// a: String,
// }
// fn Child(cx: Scope<ChildProps>) -> Element {
// dbg!("rendering child", &cx.props.a);
// render!(div { "child {cx.props.a}" })
// }
// let mut dom = new_dom(app, ());
// let _ = dom.rebuild();
// dom.handle_message(SchedulerMsg::Immediate(ScopeId(0)));
// dom.work_with_deadline(|| false);
// dom.handle_message(SchedulerMsg::Immediate(ScopeId(0)));
// dom.work_with_deadline(|| false);
// dom.handle_message(SchedulerMsg::Immediate(ScopeId(0)));
// dom.work_with_deadline(|| false);
// dbg!("forcing update to child");
// dom.handle_message(SchedulerMsg::Immediate(ScopeId(1)));
// dom.work_with_deadline(|| false);
// dom.handle_message(SchedulerMsg::Immediate(ScopeId(1)));
// dom.work_with_deadline(|| false);
// dom.handle_message(SchedulerMsg::Immediate(ScopeId(1)));
// dom.work_with_deadline(|| false);
// }
// #[test]
// fn basic() {
// fn app(cx: Scope) -> Element {
// render!(div {
// Child { a: "abcdef".to_string() }
// })
// }
// #[derive(Props, PartialEq)]
// struct ChildProps {
// a: String,
// }
// fn Child(cx: Scope<ChildProps>) -> Element {
// dbg!("rendering child", &cx.props.a);
// render!(div { "child {cx.props.a}" })
// }
// let mut dom = new_dom(app, ());
// let _ = dom.rebuild();
// dom.handle_message(SchedulerMsg::Immediate(ScopeId(0)));
// dom.work_with_deadline(|| false);
// dom.handle_message(SchedulerMsg::Immediate(ScopeId(0)));
// dom.work_with_deadline(|| false);
// }
// #[test]
// fn leak_thru_children() {
// fn app(cx: Scope) -> Element {
// cx.render(rsx! {
// Child {
// name: "asd".to_string(),
// }
// });
// cx.render(rsx! {
// div {}
// })
// }
// #[inline_props]
// fn Child(cx: Scope, name: String) -> Element {
// render!(div { "child {name}" })
// }
// let mut dom = new_dom(app, ());
// let _ = dom.rebuild();
// dom.handle_message(SchedulerMsg::Immediate(ScopeId(0)));
// dom.work_with_deadline(|| false);
// dom.handle_message(SchedulerMsg::Immediate(ScopeId(0)));
// dom.work_with_deadline(|| false);
// }
// #[test]
// fn test_pass_thru() {
// #[inline_props]
// fn NavContainer<'a>(cx: Scope, children: Element<'a>) -> Element {
// cx.render(rsx! {
// header {
// nav { children }
// }
// })
// }
// fn NavMenu(cx: Scope) -> Element {
// render!( NavBrand {}
// div {
// NavStart {}
// NavEnd {}
// }
// )
// }
// fn NavBrand(cx: Scope) -> Element {
// render!(div {})
// }
// fn NavStart(cx: Scope) -> Element {
// render!(div {})
// }
// fn NavEnd(cx: Scope) -> Element {
// render!(div {})
// }
// #[inline_props]
// fn MainContainer<'a>(
// cx: Scope,
// nav: Element<'a>,
// body: Element<'a>,
// footer: Element<'a>,
// ) -> Element {
// cx.render(rsx! {
// div {
// class: "columns is-mobile",
// div {
// class: "column is-full",
// nav,
// body,
// footer,
// }
// }
// })
// }
// fn app(cx: Scope) -> Element {
// let nav = cx.render(rsx! {
// NavContainer {
// NavMenu {}
// }
// });
// let body = cx.render(rsx! {
// div {}
// });
// let footer = cx.render(rsx! {
// div {}
// });
// cx.render(rsx! {
// MainContainer {
// nav: nav,
// body: body,
// footer: footer,
// }
// })
// }
// let mut dom = new_dom(app, ());
// let _ = dom.rebuild();
// for _ in 0..40 {
// dom.handle_message(SchedulerMsg::Immediate(ScopeId(0)));
// dom.work_with_deadline(|| false);
// dom.handle_message(SchedulerMsg::Immediate(ScopeId(0)));
// dom.work_with_deadline(|| false);
// dom.handle_message(SchedulerMsg::Immediate(ScopeId(0)));
// dom.work_with_deadline(|| false);
// dom.handle_message(SchedulerMsg::Immediate(ScopeId(1)));
// dom.work_with_deadline(|| false);
// dom.handle_message(SchedulerMsg::Immediate(ScopeId(1)));
// dom.work_with_deadline(|| false);
// dom.handle_message(SchedulerMsg::Immediate(ScopeId(1)));
// dom.work_with_deadline(|| false);
// dom.handle_message(SchedulerMsg::Immediate(ScopeId(2)));
// dom.work_with_deadline(|| false);
// dom.handle_message(SchedulerMsg::Immediate(ScopeId(2)));
// dom.work_with_deadline(|| false);
// dom.handle_message(SchedulerMsg::Immediate(ScopeId(2)));
// dom.work_with_deadline(|| false);
// dom.handle_message(SchedulerMsg::Immediate(ScopeId(3)));
// dom.work_with_deadline(|| false);
// dom.handle_message(SchedulerMsg::Immediate(ScopeId(3)));
// dom.work_with_deadline(|| false);
// dom.handle_message(SchedulerMsg::Immediate(ScopeId(3)));
// dom.work_with_deadline(|| false);
// }
// }