node/test/parallel/test-btoa-atob.js
Austin Kelleher 7533d08b94
buffer: fix atob input validation
This commit fixes a few inconsistencies between Node.js `atob`
implementation and the WHATWG spec.

Refs: https://infra.spec.whatwg.org/#forgiving-base64-decode
Fixes: https://github.com/nodejs/node/issues/42646
PR-URL: https://github.com/nodejs/node/pull/42662
Reviewed-By: Antoine du Hamel <duhamelantoine1995@gmail.com>
Reviewed-By: Akhil Marsonya <akhil.marsonya27@gmail.com>
2022-04-12 16:34:59 +02:00

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JavaScript
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'use strict';
require('../common');
const { strictEqual, throws } = require('assert');
const buffer = require('buffer');
// Exported on the global object
strictEqual(globalThis.atob, buffer.atob);
strictEqual(globalThis.btoa, buffer.btoa);
// Throws type error on no argument passed
throws(() => buffer.atob(), /TypeError/);
throws(() => buffer.btoa(), /TypeError/);
strictEqual(atob(' '), '');
strictEqual(atob(' Y\fW\tJ\njZ A=\r= '), 'abcd');
strictEqual(atob(null), '\x9Eée');
strictEqual(atob(NaN), '5£');
strictEqual(atob(Infinity), '"wâ\x9E+r');
strictEqual(atob(true), '¶»\x9E');
strictEqual(atob(1234), '×mø');
strictEqual(atob([]), '');
strictEqual(atob({ toString: () => '' }), '');
strictEqual(atob({ [Symbol.toPrimitive]: () => '' }), '');
throws(() => atob(Symbol()), /TypeError/);
[
undefined, false, () => {}, {}, [1],
0, 1, 0n, 1n, -Infinity,
'a', 'a\n\n\n', '\ra\r\r', ' a ', '\t\t\ta', 'a\f\f\f', '\ta\r \n\f',
].forEach((value) =>
// See #2 - https://html.spec.whatwg.org/multipage/webappapis.html#dom-atob
throws(() => atob(value), {
constructor: DOMException,
name: 'InvalidCharacterError',
code: 5,
}));