node/test/parallel/test-buffer-iterator.js
Rich Trott 330f25ef82 test: prepare for consistent comma-dangle lint rule
Make changes so that tests will pass when the comma-dangle settings
applied to the rest of the code base are also applied to tests.

PR-URL: https://github.com/nodejs/node/pull/37930
Reviewed-By: James M Snell <jasnell@gmail.com>
Reviewed-By: Derek Lewis <DerekNonGeneric@inf.is>
2021-04-01 23:14:29 -07:00

63 lines
910 B
JavaScript

'use strict';
require('../common');
const assert = require('assert');
const buffer = Buffer.from([1, 2, 3, 4, 5]);
let arr;
let b;
// Buffers should be iterable
arr = [];
for (b of buffer)
arr.push(b);
assert.deepStrictEqual(arr, [1, 2, 3, 4, 5]);
// Buffer iterators should be iterable
arr = [];
for (b of buffer[Symbol.iterator]())
arr.push(b);
assert.deepStrictEqual(arr, [1, 2, 3, 4, 5]);
// buffer#values() should return iterator for values
arr = [];
for (b of buffer.values())
arr.push(b);
assert.deepStrictEqual(arr, [1, 2, 3, 4, 5]);
// buffer#keys() should return iterator for keys
arr = [];
for (b of buffer.keys())
arr.push(b);
assert.deepStrictEqual(arr, [0, 1, 2, 3, 4]);
// buffer#entries() should return iterator for entries
arr = [];
for (b of buffer.entries())
arr.push(b);
assert.deepStrictEqual(arr, [
[0, 1],
[1, 2],
[2, 3],
[3, 4],
[4, 5],
]);