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use js_sys::*;
use wasm_bindgen::JsCast;
use wasm_bindgen_test::*;
#[wasm_bindgen_test]
fn promise_inheritance() {
let promise = Promise::new(&mut |_, _| ());
assert!(promise.is_instance_of::<Promise>());
assert!(promise.is_instance_of::<Object>());
let _: &Object = promise.as_ref();
}