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https://github.com/rustwasm/wasm-bindgen.git
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eee71de0ce
* Tweak the implementation of heap closures This commit updates the implementation of the `Closure` type to internally store an `Rc` and be suitable for dropping a `Closure` during the execution of the closure. This is currently needed for promises but may be generally useful as well! * Support asynchronous tests This commit adds support for executing tests asynchronously. This is modeled by tests returning a `Future` instead of simply executing inline, and is signified with `#[wasm_bindgen_test(async)]`. Support for this is added through a new `wasm-bindgen-futures` crate which is a binding between the `futures` crate and JS `Promise` objects. Lots more details can be found in the details of the commit, but one of the end results is that the `web-sys` tests are now entirely contained in the same test suite and don't need `npm install` to be run to execute them! * Review tweaks * Add some bindings for `Function.call` to `js_sys` Name them `call0`, `call1`, `call2`, ... for the number of arguments being passed. * Use oneshots channels with `JsFuture` It did indeed clean up the implementation!
30 lines
860 B
Rust
30 lines
860 B
Rust
use futures::future::Future;
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use js_sys::Promise;
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use wasm_bindgen::prelude::*;
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use wasm_bindgen_futures::JsFuture;
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use wasm_bindgen_test::*;
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use web_sys::Event;
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#[wasm_bindgen(module = "./tests/wasm/event.js")]
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extern {
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fn new_event() -> Promise;
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}
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#[wasm_bindgen_test(async)]
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fn event() -> impl Future<Item = (), Error = JsValue> {
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JsFuture::from(new_event())
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.map(Event::from)
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.map(|event| {
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// These should match `new Event`.
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assert!(event.bubbles());
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assert!(event.cancelable());
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assert!(event.composed());
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// The default behavior not initially prevented, but after
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// we call `prevent_default` it better be.
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assert!(!event.default_prevented());
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event.prevent_default();
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assert!(event.default_prevented());
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})
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}
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