Fix tests

tests/macro/html-tag-fail.stderr

@@ -102,12 +102,6 @@ error: only one `class` attribute allowed
 23 |     html! { <div class="first" class="second" /> };
    |                                ^^^^^
 
-error: `onclick` attribute value should be a closure
-  --> $DIR/html-tag-fail.rs:32:20
-   |
-32 |     html! { <input onclick=1 /> };
-   |                    ^^^^^^^
-
 error: there must be one closure argument
   --> $DIR/html-tag-fail.rs:33:28
    |
@@ -190,6 +184,15 @@ error[E0277]: the trait bound `yew::html::Href: std::convert::From<()>` is not s
              <yew::html::Href as std::convert::From<std::string::String>>
    = note: required because of the requirements on the impl of `std::convert::Into<yew::html::Href>` for `()`
 
+error[E0308]: mismatched types
+  --> $DIR/html-tag-fail.rs:32:20
+   |
+32 |     html! { <input onclick=1 /> };
+   |                    ^^^^^^^ expected struct `yew::callback::Callback`, found integer
+   |
+   = note: expected type `yew::callback::Callback<stdweb::webapi::events::mouse::ClickEvent>`
+              found type `{integer}`
+
 error[E0599]: no method named `to_string` found for type `NotToString` in the current scope
   --> $DIR/html-tag-fail.rs:37:27
    |

tests/macro/html-tag-pass.rs

@@ -4,6 +4,7 @@
 mod helpers;
 
 pass_helper! {
+    let onclick = Callback::from(|_: ClickEvent| ());
     let parent_ref = NodeRef::default();
     html! {
         <div>
@@ -37,6 +38,8 @@ pass_helper! {
             <img class=("avatar", "hidden") src="http://pic.com" />
             <img class="avatar hidden", />
             <button onclick=|e| panic!(e) />
+            <button onclick=&onclick />
+            <button onclick=onclick />
             <a href="http://google.com" />
             <custom-tag-a>
                 <custom-tag-b />