Rewrite testing code to a TestRunner managing dom context

.github/workflows/main-checks.yml

@@ -33,6 +33,7 @@ jobs:
           cargo clippy --features=ssr -- --deny=warnings
           cargo clippy --features=csr -- --deny=warnings
           cargo clippy --features=hydration -- --deny=warnings
+          cargo clippy --features=test_runner -- --deny=warnings
           cargo clippy --all-features --all-targets -- --deny=warnings
         working-directory: packages/yew
 
@@ -64,6 +65,7 @@ jobs:
           cargo clippy --release --features=ssr -- --deny=warnings
           cargo clippy --release --features=csr -- --deny=warnings
           cargo clippy --release --features=hydration -- --deny=warnings
+          cargo clippy --release --features=test_runner -- --deny=warnings
           cargo clippy --release --all-features --all-targets -- --deny=warnings
         working-directory: packages/yew
 
@@ -159,8 +161,8 @@ jobs:
       - name: Run tests - yew
         run: |
           cd packages/yew
-          CHROMEDRIVER=$(which chromedriver) cargo test --features csr,hydration,ssr --target wasm32-unknown-unknown
-          GECKODRIVER=$(which geckodriver) cargo test --features csr,hydration,ssr --target wasm32-unknown-unknown
+          CHROMEDRIVER=$(which chromedriver) cargo test --features test_runner,hydration,ssr --target wasm32-unknown-unknown
+          GECKODRIVER=$(which geckodriver) cargo test --features test_runner,hydration,ssr --target wasm32-unknown-unknown
 
       - name: Run tests - yew-router
         run: |
@@ -202,7 +204,7 @@ jobs:
         uses: actions-rs/cargo@v1
         with:
           command: test
-          args: -p yew --features "csr,ssr,hydration,tokio"
+          args: -p yew --all-features
 
   test-lints:
     name: Test lints on nightly

packages/yew/Cargo.toml

@@ -72,9 +72,10 @@ wasm-bindgen-futures = "0.4"
 tokio = { version = "1.15.0", features = ["rt"], optional = true }
 
 [dev-dependencies]
-wasm-bindgen-test = "0.3"
+futures = { version = "0.3" }
 gloo = { version = "0.7", features = ["futures"] }
 gloo-net = { version = "0.2", features = ["http"] }
+wasm-bindgen-test = "0.3"
 wasm-bindgen-futures = "0.4"
 rustversion = "1"
 trybuild = "1"
@@ -92,6 +93,7 @@ features = [
 ssr = ["futures", "html-escape"] # dep:html-escape
 csr = []
 hydration = ["csr"]
+test_runner = ["csr"]
 default = []
 
 [target.'cfg(not(target_arch = "wasm32"))'.dev-dependencies]

packages/yew/src/app_handle.rs

@@ -5,8 +5,9 @@ use std::rc::Rc;
 
 use web_sys::Element;
 
-use crate::dom_bundle::BSubtree;
+use crate::dom_bundle::{BSubtree, Bundle};
 use crate::html::{BaseComponent, NodeRef, Scope, Scoped};
+use crate::virtual_dom::VChild;
 
 /// An instance of an application.
 #[cfg_attr(documenting, doc(cfg(feature = "csr")))]
@@ -26,19 +27,21 @@ where
     /// will render the model to a virtual DOM tree.
     pub(crate) fn mount_with_props(host: Element, props: Rc<COMP::Properties>) -> Self {
         clear_element(&host);
-        let app = Self {
-            scope: Scope::new(None),
-        };
+        let mut bundle = Bundle::new();
+        let parent_scope = Scope::<COMP>::new(None).to_any();
         let hosting_root = BSubtree::create_root(&host);
-        app.scope.mount_in_place(
-            hosting_root,
-            host,
+        let scope = bundle.reconcile_vchild(
+            &hosting_root,
+            &parent_scope,
+            &host,
             NodeRef::default(),
-            NodeRef::default(),
-            props,
+            VChild {
+                props,
+                node_ref: NodeRef::default(),
+                key: None,
+            },
         );
-
-        app
+        Self { scope }
     }
 
     /// Schedule the app for destruction