add if statements to test and rsx usage example

packages/core/tests/kitchen_sink.rs

@@ -10,6 +10,8 @@ fn basic_syntax_is_a_template(cx: Scope) -> Element {
         div { key: "12345",
             class: "asd",
             class: "{asd}",
+            class: if true { "{asd}" },
+            class: if false { "{asd}" },
             onclick: move |_| {},
             div { "{var}" }
             div {
@@ -37,7 +39,7 @@ fn dual_stream() {
             LoadTemplate { name: "template", index: 0, id: ElementId(1) },
             SetAttribute {
                 name: "class",
-                value: (&*bump.alloc("ast 123".into_value(&bump))).into(),
+                value: (&*bump.alloc("asd 123 123".into_value(&bump))).into(),
                 id: ElementId(1),
                 ns: None,
             },

packages/rsx/src/attribute.rs

@@ -121,7 +121,12 @@ impl Parse for ElementAttrValue {
             } else {
                 ElementAttrValue::AttrOptionalExpr {
                     condition: *if_expr.cond,
-                    value: Box::new(syn::parse2(if_expr.then_branch.into_token_stream())?),
+                    value: {
+                        let stmts = if_expr.then_branch.stmts;
+                        Box::new(syn::parse2(quote! {
+                            #(#stmts)*
+                        })?)
+                    },
                 }
             }
         } else if input.peek(LitStr) {