js: Implement bindings for Array.isArray

This commit is contained in:
Herman J. Radtke III 2018-06-26 11:04:28 -07:00
parent 16bc3eb7e7
commit 3833c94400
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2 changed files with 46 additions and 0 deletions

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@ -131,6 +131,12 @@ extern {
#[wasm_bindgen(method, js_name = indexOf)]
pub fn index_of(this: &Array, value: JsValue, from_index: i32) -> i32;
/// The Array.isArray() method determines whether the passed value is an Array.
///
/// https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/isArray
#[wasm_bindgen(static_method_of = Array, js_name = isArray)]
pub fn is_array(value: &JsValue) -> bool;
/// The join() method joins all elements of an array (or an array-like object)
/// into a string and returns this string.
///

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@ -73,6 +73,46 @@ fn index_of() {
.test()
}
#[test]
fn is_array() {
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 is_array(value: &JsValue) -> bool {
js::Array::is_array(value)
}
"#)
.file("test.ts", r#"
import * as assert from "assert";
import * as wasm from "./out";
export function test() {
assert(wasm.is_array([]));
assert(wasm.is_array([1]));
assert(wasm.is_array(new Array()));
assert(wasm.is_array(new Array('a', 'b', 'c', 'd')));
assert(wasm.is_array(new Array(3)));
assert(wasm.is_array(Array.prototype));
assert(!wasm.is_array({}));
assert(!wasm.is_array(null));
assert(!wasm.is_array(undefined));
assert(!wasm.is_array(17));
assert(!wasm.is_array('Array'));
assert(!wasm.is_array(true));
assert(!wasm.is_array(false));
assert(!wasm.is_array({ __proto__: Array.prototype }));
}
"#)
.test()
}
#[test]
fn sort() {
project()