use dioxus::core::Mutation::*; use dioxus::prelude::*; use dioxus_core::ElementId; #[test] fn text_diff() { fn app(cx: Scope) -> Element { let gen = cx.generation(); cx.render(rsx!( h1 { "hello {gen}" } )) } let mut vdom = VirtualDom::new(app); _ = vdom.rebuild(); vdom.mark_dirty(ScopeId::ROOT); assert_eq!( vdom.render_immediate().edits, [SetText { value: "hello 1", id: ElementId(2) }] ); vdom.mark_dirty(ScopeId::ROOT); assert_eq!( vdom.render_immediate().edits, [SetText { value: "hello 2", id: ElementId(2) }] ); vdom.mark_dirty(ScopeId::ROOT); assert_eq!( vdom.render_immediate().edits, [SetText { value: "hello 3", id: ElementId(2) }] ); } #[test] fn element_swap() { fn app(cx: Scope) -> Element { let gen = cx.generation(); match gen % 2 { 0 => cx.render(rsx!( h1 { "hello 1" } )), 1 => cx.render(rsx!( h2 { "hello 2" } )), _ => unreachable!(), } } let mut vdom = VirtualDom::new(app); _ = vdom.rebuild(); vdom.mark_dirty(ScopeId::ROOT); assert_eq!( vdom.render_immediate().santize().edits, [ LoadTemplate { name: "template", index: 0, id: ElementId(2,) }, ReplaceWith { id: ElementId(1,), m: 1 }, ] ); vdom.mark_dirty(ScopeId::ROOT); assert_eq!( vdom.render_immediate().santize().edits, [ LoadTemplate { name: "template", index: 0, id: ElementId(1,) }, ReplaceWith { id: ElementId(2,), m: 1 }, ] ); vdom.mark_dirty(ScopeId::ROOT); assert_eq!( vdom.render_immediate().santize().edits, [ LoadTemplate { name: "template", index: 0, id: ElementId(2,) }, ReplaceWith { id: ElementId(1,), m: 1 }, ] ); vdom.mark_dirty(ScopeId::ROOT); assert_eq!( vdom.render_immediate().santize().edits, [ LoadTemplate { name: "template", index: 0, id: ElementId(1,) }, ReplaceWith { id: ElementId(2,), m: 1 }, ] ); }