mirror of
https://github.com/DioxusLabs/dioxus
synced 2024-12-29 22:13:08 +00:00
781 lines
19 KiB
Rust
781 lines
19 KiB
Rust
//! Diffing Tests
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use bumpalo::Bump;
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use dioxus::{
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diff::DiffMachine, prelude::*, scheduler::Scheduler, DiffInstruction, DomEdit, MountType,
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};
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use dioxus_core as dioxus;
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use dioxus_html as dioxus_elements;
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use futures_util::FutureExt;
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mod test_logging;
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use DomEdit::*;
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// logging is wired up to the test harness
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// feel free to enable while debugging
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const IS_LOGGING_ENABLED: bool = false;
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struct TestDom {
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bump: Bump,
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resources: Scheduler,
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}
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impl TestDom {
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fn new() -> TestDom {
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test_logging::set_up_logging(IS_LOGGING_ENABLED);
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let bump = Bump::new();
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let resources = Scheduler::new();
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TestDom { bump, resources }
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}
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fn new_factory<'a>(&'a self) -> NodeFactory<'a> {
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NodeFactory::new(&self.bump)
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}
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fn render<'a, F>(&'a self, lazy_nodes: LazyNodes<'a, F>) -> VNode<'a>
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where
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F: FnOnce(NodeFactory<'a>) -> VNode<'a>,
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{
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use dioxus_core::nodes::{IntoVNode, IntoVNodeList};
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lazy_nodes.into_vnode(NodeFactory::new(&self.bump))
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}
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fn diff<'a>(&'a self, old: &'a VNode<'a>, new: &'a VNode<'a>) -> Mutations<'a> {
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// let mut edits = Vec::new();
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let mut machine = DiffMachine::new_headless(&self.resources);
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machine.stack.push(DiffInstruction::DiffNode { new, old });
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machine.mutations
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}
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fn create<'a, F1>(&'a self, left: LazyNodes<'a, F1>) -> Mutations<'a>
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where
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F1: FnOnce(NodeFactory<'a>) -> VNode<'a>,
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{
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let old = self.bump.alloc(self.render(left));
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let mut machine = DiffMachine::new_headless(&self.resources);
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machine.stack.create_node(old, MountType::Append);
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work_sync(&mut machine);
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machine.mutations
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}
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fn lazy_diff<'a, F1, F2>(
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&'a self,
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left: LazyNodes<'a, F1>,
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right: LazyNodes<'a, F2>,
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) -> (Mutations<'a>, Mutations<'a>)
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where
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F1: FnOnce(NodeFactory<'a>) -> VNode<'a>,
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F2: FnOnce(NodeFactory<'a>) -> VNode<'a>,
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{
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let old = self.bump.alloc(self.render(left));
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let new = self.bump.alloc(self.render(right));
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let mut machine = DiffMachine::new_headless(&self.resources);
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machine.stack.create_node(old, MountType::Append);
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work_sync(&mut machine);
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let create_edits = machine.mutations;
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let mut machine = DiffMachine::new_headless(&self.resources);
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machine.stack.push(DiffInstruction::DiffNode { old, new });
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work_sync(&mut machine);
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let edits = machine.mutations;
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(create_edits, edits)
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}
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}
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fn work_sync(machine: &mut DiffMachine) {
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let mut fut = machine.work().boxed_local();
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while let None = (&mut fut).now_or_never() {
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//
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}
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}
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#[test]
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fn diffing_works() {}
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/// Should push the text node onto the stack and modify it
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#[test]
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fn html_and_rsx_generate_the_same_output() {
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let dom = TestDom::new();
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let (create, change) = dom.lazy_diff(
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rsx! ( div { "Hello world" } ),
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rsx! ( div { "Goodbye world" } ),
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);
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assert_eq!(
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create.edits,
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[
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CreateElement { id: 0, tag: "div" },
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CreateTextNode {
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id: 1,
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text: "Hello world"
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},
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AppendChildren { many: 1 },
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AppendChildren { many: 1 },
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]
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);
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assert_eq!(
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change.edits,
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[
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PushRoot { id: 1 },
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SetText {
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text: "Goodbye world"
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},
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PopRoot
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]
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);
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}
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/// Should result in 3 elements on the stack
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#[test]
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fn fragments_create_properly() {
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let dom = TestDom::new();
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let create = dom.create(rsx! {
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div { "Hello a" }
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div { "Hello b" }
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div { "Hello c" }
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});
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assert_eq!(
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create.edits,
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[
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CreateElement { id: 0, tag: "div" },
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CreateTextNode {
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id: 1,
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text: "Hello a"
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},
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AppendChildren { many: 1 },
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CreateElement { id: 2, tag: "div" },
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CreateTextNode {
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id: 3,
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text: "Hello b"
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},
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AppendChildren { many: 1 },
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CreateElement { id: 4, tag: "div" },
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CreateTextNode {
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id: 5,
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text: "Hello c"
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},
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AppendChildren { many: 1 },
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AppendChildren { many: 3 },
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]
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);
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}
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/// Should result in the creation of an anchor (placeholder) and then a replacewith
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#[test]
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fn empty_fragments_create_anchors() {
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let dom = TestDom::new();
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let left = rsx!({ (0..0).map(|f| rsx! { div {}}) });
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let right = rsx!({ (0..1).map(|f| rsx! { div {}}) });
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let (create, change) = dom.lazy_diff(left, right);
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assert_eq!(
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create.edits,
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[CreatePlaceholder { id: 0 }, AppendChildren { many: 1 }]
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);
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assert_eq!(
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change.edits,
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[
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CreateElement { id: 1, tag: "div" },
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ReplaceWith { m: 1, root: 0 }
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]
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);
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}
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/// Should result in the creation of an anchor (placeholder) and then a replacewith m=5
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#[test]
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fn empty_fragments_create_many_anchors() {
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let dom = TestDom::new();
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let left = rsx!({ (0..0).map(|f| rsx! { div {}}) });
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let right = rsx!({ (0..5).map(|f| rsx! { div {}}) });
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let (create, change) = dom.lazy_diff(left, right);
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assert_eq!(
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create.edits,
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[CreatePlaceholder { id: 0 }, AppendChildren { many: 1 }]
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);
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assert_eq!(
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change.edits,
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[
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CreateElement { id: 1, tag: "div" },
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CreateElement { id: 2, tag: "div" },
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CreateElement { id: 3, tag: "div" },
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CreateElement { id: 4, tag: "div" },
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CreateElement { id: 5, tag: "div" },
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ReplaceWith { m: 5, root: 0 }
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]
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);
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}
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/// Should result in the creation of an anchor (placeholder) and then a replacewith
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/// Includes child nodes inside the fragment
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#[test]
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fn empty_fragments_create_anchors_with_many_children() {
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let dom = TestDom::new();
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let left = rsx!({ (0..0).map(|f| rsx! { div {} }) });
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let right = rsx!({
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(0..3).map(|f| {
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rsx! { div { "hello: {f}" }}
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})
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});
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let (create, change) = dom.lazy_diff(left, right);
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assert_eq!(
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create.edits,
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[CreatePlaceholder { id: 0 }, AppendChildren { many: 1 }]
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);
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assert_eq!(
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change.edits,
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[
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CreateElement { id: 1, tag: "div" },
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CreateTextNode {
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text: "hello: 0",
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id: 2
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},
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AppendChildren { many: 1 },
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CreateElement { id: 3, tag: "div" },
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CreateTextNode {
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text: "hello: 1",
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id: 4
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},
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AppendChildren { many: 1 },
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CreateElement { id: 5, tag: "div" },
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CreateTextNode {
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text: "hello: 2",
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id: 6
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},
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AppendChildren { many: 1 },
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ReplaceWith { m: 3, root: 0 }
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]
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);
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}
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/// Should result in every node being pushed and then replaced with an anchor
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#[test]
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fn many_items_become_fragment() {
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let dom = TestDom::new();
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let left = rsx!({
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(0..2).map(|f| {
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rsx! { div { "hello" }}
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})
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});
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let right = rsx!({ (0..0).map(|f| rsx! { div {} }) });
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let (create, change) = dom.lazy_diff(left, right);
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assert_eq!(
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create.edits,
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[
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CreateElement { id: 0, tag: "div" },
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CreateTextNode {
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text: "hello",
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id: 1
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},
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AppendChildren { many: 1 },
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CreateElement { id: 2, tag: "div" },
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CreateTextNode {
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text: "hello",
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id: 3
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},
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AppendChildren { many: 1 },
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AppendChildren { many: 2 },
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]
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);
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// hmmmmmmmmm worried about reusing IDs that we shouldnt be
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assert_eq!(
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change.edits,
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[
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Remove { root: 2 },
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CreatePlaceholder { id: 4 },
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ReplaceWith { root: 0, m: 1 },
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]
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);
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}
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/// Should result in no edits
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#[test]
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fn two_equal_fragments_are_equal() {
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let dom = TestDom::new();
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let left = rsx!({
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(0..2).map(|f| {
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rsx! { div { "hello" }}
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})
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});
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let right = rsx!({
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(0..2).map(|f| {
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rsx! { div { "hello" }}
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})
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});
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let (create, change) = dom.lazy_diff(left, right);
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assert!(change.edits.is_empty());
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}
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/// Should result the creation of more nodes appended after the old last node
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#[test]
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fn two_fragments_with_differrent_elements_are_differet() {
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let dom = TestDom::new();
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let left = rsx!(
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{ (0..2).map(|_| rsx! { div { }} ) }
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p {}
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);
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let right = rsx!(
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{ (0..5).map(|_| rsx! (h1 { }) ) }
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p {}
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);
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let (create, changes) = dom.lazy_diff(left, right);
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log::debug!("{:#?}", &changes);
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assert_eq!(
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changes.edits,
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[
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// create the new h1s
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CreateElement { tag: "h1", id: 3 },
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CreateElement { tag: "h1", id: 4 },
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CreateElement { tag: "h1", id: 5 },
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InsertAfter { root: 1, n: 3 },
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// replace the divs with new h1s
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CreateElement { tag: "h1", id: 6 },
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ReplaceWith { root: 0, m: 1 },
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CreateElement { tag: "h1", id: 7 },
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ReplaceWith { root: 1, m: 1 },
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]
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);
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}
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/// Should result in multiple nodes destroyed - with changes to the first nodes
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#[test]
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fn two_fragments_with_differrent_elements_are_differet_shorter() {
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let dom = TestDom::new();
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let left = rsx!(
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{(0..5).map(|f| {rsx! { div { }}})}
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p {}
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);
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let right = rsx!(
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{(0..2).map(|f| {rsx! { h1 { }}})}
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p {}
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);
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let (create, change) = dom.lazy_diff(left, right);
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assert_eq!(
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create.edits,
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[
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CreateElement { id: 0, tag: "div" },
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CreateElement { id: 1, tag: "div" },
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CreateElement { id: 2, tag: "div" },
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CreateElement { id: 3, tag: "div" },
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CreateElement { id: 4, tag: "div" },
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CreateElement { id: 5, tag: "p" },
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AppendChildren { many: 6 },
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]
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);
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assert_eq!(
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change.edits,
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[
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Remove { root: 2 },
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Remove { root: 3 },
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Remove { root: 4 },
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CreateElement { id: 6, tag: "h1" },
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ReplaceWith { root: 0, m: 1 },
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CreateElement { id: 7, tag: "h1" },
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ReplaceWith { root: 1, m: 1 },
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]
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);
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}
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/// Should result in multiple nodes destroyed - with no changes
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#[test]
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fn two_fragments_with_same_elements_are_differet() {
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let dom = TestDom::new();
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let left = rsx!(
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{(0..2).map(|f| {rsx! { div { }}})}
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p {}
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);
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let right = rsx!(
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{(0..5).map(|f| {rsx! { div { }}})}
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p {}
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);
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let (create, change) = dom.lazy_diff(left, right);
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assert_eq!(
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create.edits,
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[
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CreateElement { id: 0, tag: "div" },
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CreateElement { id: 1, tag: "div" },
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CreateElement { id: 2, tag: "p" },
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AppendChildren { many: 3 },
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]
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);
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assert_eq!(
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change.edits,
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[
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CreateElement { id: 3, tag: "div" },
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CreateElement { id: 4, tag: "div" },
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CreateElement { id: 5, tag: "div" },
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InsertAfter { root: 1, n: 3 },
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]
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);
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}
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/// should result in the removal of elements
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#[test]
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fn keyed_diffing_order() {
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let dom = TestDom::new();
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let left = rsx!(
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{(0..5).map(|f| {rsx! { div { key: "{f}" }}})}
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p {"e"}
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);
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let right = rsx!(
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{(0..2).map(|f| {rsx! { div { key: "{f}" }}})}
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p {"e"}
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);
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let (create, change) = dom.lazy_diff(left, right);
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assert_eq!(
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change.edits,
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[Remove { root: 2 }, Remove { root: 3 }, Remove { root: 4 },]
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);
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}
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/// Should result in moves, but not removals or additions
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#[test]
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fn keyed_diffing_out_of_order() {
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let dom = TestDom::new();
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let left = rsx!({
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[0, 1, 2, 3, /**/ 4, 5, 6, /**/ 7, 8, 9].iter().map(|f| {
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rsx! { div { key: "{f}" }}
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})
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});
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let right = rsx!({
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[0, 1, 2, 3, /**/ 6, 4, 5, /**/ 7, 8, 9].iter().map(|f| {
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rsx! { div { key: "{f}" }}
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})
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});
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let (_, changes) = dom.lazy_diff(left, right);
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log::debug!("{:?}", &changes);
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assert_eq!(
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changes.edits,
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[PushRoot { id: 6 }, InsertBefore { root: 4, n: 1 }]
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);
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}
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/// Should result in moves only
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#[test]
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fn keyed_diffing_out_of_order_adds() {
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let dom = TestDom::new();
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let left = rsx!({
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[/**/ 4, 5, 6, 7, 8 /**/].iter().map(|f| {
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rsx! { div { key: "{f}" }}
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})
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});
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let right = rsx!({
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[/**/ 8, 7, 4, 5, 6 /**/].iter().map(|f| {
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rsx! { div { key: "{f}" }}
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})
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});
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let (_, change) = dom.lazy_diff(left, right);
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assert_eq!(
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change.edits,
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[
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PushRoot { id: 4 },
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PushRoot { id: 3 },
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InsertBefore { n: 2, root: 0 }
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]
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);
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}
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/// Should result in moves onl
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#[test]
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fn keyed_diffing_out_of_order_adds_2() {
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let dom = TestDom::new();
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let left = rsx!({
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[/**/ 4, 5, 6, 7, 8 /**/].iter().map(|f| {
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rsx! { div { key: "{f}" }}
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})
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});
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let right = rsx!({
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[/**/ 7, 8, 4, 5, 6 /**/].iter().map(|f| {
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rsx! { div { key: "{f}" }}
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})
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});
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let (_, change) = dom.lazy_diff(left, right);
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assert_eq!(
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change.edits,
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[
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PushRoot { id: 3 },
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PushRoot { id: 4 },
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InsertBefore { n: 2, root: 0 }
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]
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);
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}
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|
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/// Should result in moves onl
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#[test]
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fn keyed_diffing_out_of_order_adds_3() {
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let dom = TestDom::new();
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let left = rsx!({
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[/**/ 4, 5, 6, 7, 8 /**/].iter().map(|f| {
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rsx! { div { key: "{f}" }}
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})
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});
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let right = rsx!({
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[/**/ 4, 8, 7, 5, 6 /**/].iter().map(|f| {
|
|
rsx! { div { key: "{f}" }}
|
|
})
|
|
});
|
|
|
|
let (_, change) = dom.lazy_diff(left, right);
|
|
assert_eq!(
|
|
change.edits,
|
|
[
|
|
PushRoot { id: 4 },
|
|
PushRoot { id: 3 },
|
|
InsertBefore { n: 2, root: 1 }
|
|
]
|
|
);
|
|
}
|
|
|
|
/// Should result in moves onl
|
|
#[test]
|
|
fn keyed_diffing_out_of_order_adds_4() {
|
|
let dom = TestDom::new();
|
|
|
|
let left = rsx!({
|
|
[/**/ 4, 5, 6, 7, 8 /**/].iter().map(|f| {
|
|
rsx! { div { key: "{f}" }}
|
|
})
|
|
});
|
|
|
|
let right = rsx!({
|
|
[/**/ 4, 5, 8, 7, 6 /**/].iter().map(|f| {
|
|
rsx! { div { key: "{f}" }}
|
|
})
|
|
});
|
|
|
|
let (_, change) = dom.lazy_diff(left, right);
|
|
assert_eq!(
|
|
change.edits,
|
|
[
|
|
PushRoot { id: 4 },
|
|
PushRoot { id: 3 },
|
|
InsertBefore { n: 2, root: 2 }
|
|
]
|
|
);
|
|
}
|
|
|
|
/// Should result in moves onl
|
|
#[test]
|
|
fn keyed_diffing_out_of_order_adds_5() {
|
|
let dom = TestDom::new();
|
|
|
|
let left = rsx!({
|
|
[/**/ 4, 5, 6, 7, 8 /**/].iter().map(|f| {
|
|
rsx! { div { key: "{f}" }}
|
|
})
|
|
});
|
|
|
|
let right = rsx!({
|
|
[/**/ 4, 5, 6, 8, 7 /**/].iter().map(|f| {
|
|
rsx! { div { key: "{f}" }}
|
|
})
|
|
});
|
|
|
|
let (_, change) = dom.lazy_diff(left, right);
|
|
assert_eq!(
|
|
change.edits,
|
|
[PushRoot { id: 4 }, InsertBefore { n: 1, root: 3 }]
|
|
);
|
|
}
|
|
|
|
#[test]
|
|
fn keyed_diffing_additions() {
|
|
let dom = TestDom::new();
|
|
|
|
let left = rsx!({
|
|
[/**/ 4, 5, 6, 7, 8 /**/].iter().map(|f| {
|
|
rsx! { div { key: "{f}" }}
|
|
})
|
|
});
|
|
|
|
let right = rsx!({
|
|
[/**/ 4, 5, 6, 7, 8, 9, 10 /**/].iter().map(|f| {
|
|
rsx! { div { key: "{f}" }}
|
|
})
|
|
});
|
|
|
|
let (_, change) = dom.lazy_diff(left, right);
|
|
assert_eq!(
|
|
change.edits,
|
|
[
|
|
CreateElement { id: 5, tag: "div" },
|
|
CreateElement { id: 6, tag: "div" },
|
|
InsertAfter { n: 2, root: 4 }
|
|
]
|
|
);
|
|
}
|
|
|
|
#[test]
|
|
fn keyed_diffing_additions_and_moves_on_ends() {
|
|
let dom = TestDom::new();
|
|
|
|
let left = rsx!({
|
|
[/**/ 4, 5, 6, 7 /**/].iter().map(|f| {
|
|
rsx! { div { key: "{f}" }}
|
|
})
|
|
});
|
|
|
|
let right = rsx!({
|
|
[/**/ 7, 4, 5, 6, 11, 12 /**/].iter().map(|f| {
|
|
rsx! { div { key: "{f}" }}
|
|
})
|
|
});
|
|
|
|
let (_, change) = dom.lazy_diff(left, right);
|
|
log::debug!("{:?}", change);
|
|
assert_eq!(
|
|
change.edits,
|
|
[
|
|
// create 11, 12
|
|
CreateElement { tag: "div", id: 4 },
|
|
CreateElement { tag: "div", id: 5 },
|
|
InsertAfter { root: 2, n: 2 },
|
|
// move 7 to the front
|
|
PushRoot { id: 3 },
|
|
InsertBefore { root: 0, n: 1 }
|
|
]
|
|
);
|
|
}
|
|
|
|
#[test]
|
|
fn keyed_diffing_additions_and_moves_in_middle() {
|
|
let dom = TestDom::new();
|
|
|
|
let left = rsx!({
|
|
[/**/ 4, 5, 6, 7 /**/].iter().map(|f| {
|
|
rsx! { div { key: "{f}" }}
|
|
})
|
|
});
|
|
|
|
let right = rsx!({
|
|
[/**/ 7, 4, 13, 17, 5, 11, 12, 6 /**/].iter().map(|f| {
|
|
rsx! { div { key: "{f}" }}
|
|
})
|
|
});
|
|
|
|
// LIS: 4, 5, 6
|
|
let (_, change) = dom.lazy_diff(left, right);
|
|
log::debug!("{:#?}", change);
|
|
assert_eq!(
|
|
change.edits,
|
|
[
|
|
// create 13, 17
|
|
CreateElement { tag: "div", id: 4 },
|
|
CreateElement { tag: "div", id: 5 },
|
|
InsertBefore { root: 1, n: 2 },
|
|
// create 11, 12
|
|
CreateElement { tag: "div", id: 6 },
|
|
CreateElement { tag: "div", id: 7 },
|
|
InsertBefore { root: 2, n: 2 },
|
|
// move 7
|
|
PushRoot { id: 3 },
|
|
InsertBefore { root: 0, n: 1 }
|
|
]
|
|
);
|
|
}
|
|
|
|
#[test]
|
|
fn controlled_keyed_diffing_out_of_order() {
|
|
let dom = TestDom::new();
|
|
|
|
let left = rsx!({
|
|
[4, 5, 6, 7].iter().map(|f| {
|
|
rsx! { div { key: "{f}" }}
|
|
})
|
|
});
|
|
|
|
let right = rsx!({
|
|
[0, 5, 9, 6, 4].iter().map(|f| {
|
|
rsx! { div { key: "{f}" }}
|
|
})
|
|
});
|
|
|
|
// LIS: 5, 6
|
|
let (_, changes) = dom.lazy_diff(left, right);
|
|
log::debug!("{:#?}", &changes);
|
|
assert_eq!(
|
|
changes.edits,
|
|
[
|
|
// move 4 to after 6
|
|
PushRoot { id: 0 },
|
|
InsertAfter { n: 1, root: 2 },
|
|
// remove 7
|
|
|
|
// create 9 and insert before 6
|
|
CreateElement { id: 4, tag: "div" },
|
|
InsertBefore { n: 1, root: 2 },
|
|
// create 0 and insert before 5
|
|
CreateElement { id: 5, tag: "div" },
|
|
InsertBefore { n: 1, root: 1 },
|
|
]
|
|
);
|
|
}
|
|
|
|
#[test]
|
|
fn controlled_keyed_diffing_out_of_order_max_test() {
|
|
let dom = TestDom::new();
|
|
|
|
let left = rsx!({
|
|
[0, 1, 2, 3, 4].iter().map(|f| {
|
|
rsx! { div { key: "{f}" }}
|
|
})
|
|
});
|
|
|
|
let right = rsx!({
|
|
[3, 0, 1, 10, 2].iter().map(|f| {
|
|
rsx! { div { key: "{f}" }}
|
|
})
|
|
});
|
|
|
|
let (_, changes) = dom.lazy_diff(left, right);
|
|
log::debug!("{:#?}", &changes);
|
|
assert_eq!(
|
|
changes.edits,
|
|
[
|
|
CreateElement { id: 5, tag: "div" },
|
|
InsertBefore { n: 1, root: 2 },
|
|
PushRoot { id: 3 },
|
|
InsertBefore { n: 1, root: 0 },
|
|
]
|
|
);
|
|
}
|