add bindings for unshift

This commit is contained in:
Matt Long 2018-06-20 18:06:08 -04:00
parent 68acbeab25
commit 3cf522d2df
2 changed files with 37 additions and 0 deletions

View File

@ -165,4 +165,10 @@ extern {
/// http://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/shift
#[wasm_bindgen(method)]
pub fn shift(this: &Array) -> JsValue;
/// The unshift() method adds one or more elements to the beginning of an array and returns the new length of the array.
///
/// http://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/unshift
#[wasm_bindgen(method)]
pub fn unshift(this: &Array, value: JsValue) -> u32;
}

View File

@ -324,4 +324,35 @@ fn shift() {
}
"#)
.test()
}
#[test]
fn unshift() {
project()
.file("src/lib.rs", r#"
#![feature(proc_macro, wasm_custom_section)]
extern crate wasm_bindgen;
use wasm_bindgen::prelude::*;
use wasm_bindgen::js;
#[wasm_bindgen]
pub fn unshift_item(this: &js::Array, value: JsValue) -> u32 {
this.unshift(value)
}
"#)
.file("test.ts", r#"
import * as assert from "assert";
import * as wasm from "./out";
export function test() {
let characters = [8, 5, 4, 3, 1, 2]
let length = wasm.unshift_item(characters, "abba");
assert.equal(length, 7);
assert.equal(characters[0], "abba");
}
"#)
.test()
}