third_party/rust_crates/vendor/wasm-bindgen/tests/headless/main.rs

#![cfg(target_arch = "wasm32")]

extern crate wasm_bindgen;
extern crate wasm_bindgen_test;

use wasm_bindgen::prelude::*;
use wasm_bindgen_test::*;

wasm_bindgen_test_configure!(run_in_browser);

#[wasm_bindgen]
pub struct ConsumeRetString;

#[wasm_bindgen]
impl ConsumeRetString {
    // https://github.com/rustwasm/wasm-bindgen/issues/329#issuecomment-411082013
    //
    // This used to cause two `const ptr = ...` declarations, which is invalid
    // JS.
    pub fn consume(self) -> String {
        String::new()
    }
}

#[wasm_bindgen_test]
fn works() {
    ConsumeRetString.consume();
}

#[wasm_bindgen]
extern "C" {
    #[wasm_bindgen(js_namespace = console)]
    pub fn log(s: &str);
}

#[wasm_bindgen_test]
fn can_log_html_strings() {
    log("<script>alert('lol')</script>");
}

#[wasm_bindgen]
pub fn import_export_same_name() {
    #[wasm_bindgen(module = "/tests/headless/main.js")]
    extern "C" {
        fn import_export_same_name();
    }
    import_export_same_name();
}

pub mod anyref_heap_live_count;
pub mod modules;
pub mod snippets;
pub mod strings;

#[wasm_bindgen_test]
fn closures_work() {
    let x = Closure::wrap(Box::new(|| {}) as Box<dyn FnMut()>);
    drop(x);
    let x = Closure::wrap(Box::new(|| {}) as Box<dyn FnMut()>);
    x.forget();
}