Port Proxy tests to wasm

crates/js-sys/tests/wasm/Proxy.js

@@ -0,0 +1,11 @@
+exports.proxy_target = function() {
+  return { a: 100 };
+};
+
+exports.proxy_handler = function() {
+  return {
+    get: function(obj, prop) {
+      return prop in obj ? obj[prop] : 37;
+    }
+  };
+};

crates/js-sys/tests/wasm/Proxy.rs

@@ -0,0 +1,46 @@
+use wasm_bindgen::prelude::*;
+use wasm_bindgen_test::*;
+use js_sys::*;
+
+#[wasm_bindgen(module = "tests/wasm/Proxy.js", version = "*")]
+extern {
+    fn proxy_target() -> JsValue;
+    fn proxy_handler() -> Object;
+
+    type Custom;
+    #[wasm_bindgen(method, getter, structural, catch)]
+    fn a(this: &Custom) -> Result<u32, JsValue>;
+    #[wasm_bindgen(method, getter, structural, catch)]
+    fn b(this: &Custom) -> Result<u32, JsValue>;
+
+
+    type RevocableResult;
+    #[wasm_bindgen(method, getter, structural)]
+    fn proxy(this: &RevocableResult) -> JsValue;
+    #[wasm_bindgen(method, getter, structural)]
+    fn revoke(this: &RevocableResult) -> Function;
+}
+
+#[wasm_bindgen_test]
+fn new() {
+    let proxy = Proxy::new(&proxy_target(), &proxy_handler());
+    let proxy = Custom::from(JsValue::from(proxy));
+    assert_eq!(proxy.a().unwrap(), 100);
+    assert_eq!(proxy.b().unwrap(), 37);
+}
+
+#[wasm_bindgen_test]
+fn revocable() {
+    let result = Proxy::revocable(&proxy_target(), &proxy_handler());
+    let result = RevocableResult::from(JsValue::from(result));
+    let proxy = result.proxy();
+    let revoke = result.revoke();
+
+    let obj = Custom::from(proxy);
+    assert_eq!(obj.a().unwrap(), 100);
+    assert_eq!(obj.b().unwrap(), 37);
+    revoke.apply(&JsValue::undefined(), &Array::new()).unwrap();
+    assert!(obj.a().is_err());
+    assert!(obj.b().is_err());
+    assert!(JsValue::from(obj).is_object());
+}

crates/js-sys/tests/wasm/main.rs

@@ -22,3 +22,4 @@ pub mod MapIterator;
 pub mod Math;
 pub mod Number;
 pub mod Object;
+pub mod Proxy;