fix routers without an index route (#2477)

packages/router/tests/via_ssr/main.rs

@@ -1,2 +1,3 @@
 mod link;
 mod outlet;
+mod without_index;

packages/router/tests/via_ssr/without_index.rs

@@ -0,0 +1,41 @@
+use dioxus::prelude::*;
+
+// Tests for regressions of <https://github.com/DioxusLabs/dioxus/issues/2468>
+#[test]
+fn router_without_index_route_parses() {
+    let mut vdom = VirtualDom::new_with_props(
+        App,
+        AppProps {
+            path: Route::Test {},
+        },
+    );
+    vdom.rebuild_in_place();
+    let as_string = dioxus_ssr::render(&vdom);
+    assert_eq!(as_string, "<div>router with no index route renders</div>")
+}
+
+#[derive(Routable, Clone, Copy, PartialEq, Debug)]
+enum Route {
+    #[route("/test")]
+    Test {},
+}
+
+#[component]
+fn Test() -> Element {
+    rsx! {
+        div {
+            "router with no index route renders"
+        }
+    }
+}
+
+#[component]
+fn App(path: Route) -> Element {
+    rsx! {
+        Router::<Route> {
+            config: {
+                move || RouterConfig::default().history(MemoryHistory::with_initial_path(path))
+            }
+        }
+    }
+}