Add tests

packages/yew/src/dom_bundle/btag/attributes.rs

@@ -265,3 +265,52 @@ impl Apply for Attributes {
         }
     }
 }
+
+#[cfg(target_arch = "wasm32")]
+#[cfg(test)]
+mod tests {
+    use super::*;
+    use wasm_bindgen_test::{wasm_bindgen_test as test, wasm_bindgen_test_configure};
+    use gloo::utils::document;
+    use js_sys::Reflect;
+
+    wasm_bindgen_test_configure!(run_in_browser);
+
+    fn create_element() -> (Element, BSubtree) {
+        let element = document().create_element("a").expect("failed to create element");
+        let btree = BSubtree::create_root(&element);
+        (element, btree)
+    }
+
+    #[test]
+    fn properties_are_set() {
+        let attrs = Attributes::Static(&[
+            ["href", "https://example.com/"],
+            ["alt", "somewhere"],
+        ]);
+        let (element, btree) = create_element();
+        attrs.apply(&btree, &element);
+        assert_eq!(
+            Reflect::get(element.as_ref(), &JsValue::from_str("href")).expect("no href").as_string().expect("not a string"),
+            "https://example.com/",
+            "property `href` not set properly"
+        );
+        assert_eq!(
+            Reflect::get(element.as_ref(), &JsValue::from_str("alt")).expect("no alt").as_string().expect("not a string"),
+            "somewhere",
+            "property `alt` not set properly"
+        );
+    }
+
+    #[test]
+    fn class_id_are_attrs() {
+        let attrs = Attributes::Static(&[
+            ["id", "foo"],
+            ["class", "thing"],
+        ]);
+        let (element, btree) = create_element();
+        attrs.apply(&btree, &element);
+        assert_eq!(element.get_attribute("id").unwrap(), "foo");
+        assert_eq!(element.get_attribute("class").unwrap(), "thing");
+    }
+}