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Support asynchronous tests (#600)

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* 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!
This commit is contained in:
Alex Crichton
2018-08-01 15:52:24 -05:00
committed by GitHub
parent 4181afea45
commit eee71de0ce
34 changed files with 1167 additions and 333 deletions
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10
crates/test/src/lib.rs
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@ -5,10 +5,14 @@
#![feature(use_extern_macros)]
#![deny(missing_docs)]
extern crate wasm_bindgen_test_macro;
extern crate wasm_bindgen;
extern crate js_sys;
extern crate console_error_panic_hook;
extern crate futures;
extern crate js_sys;
#[macro_use]
extern crate scoped_tls;
extern crate wasm_bindgen;
extern crate wasm_bindgen_futures;
extern crate wasm_bindgen_test_macro;
pub use wasm_bindgen_test_macro::wasm_bindgen_test;