js/src/tests/test262/prs/3994/built-ins/Uint8Array/fromBase64/last-chunk-handling.js

   1 // |reftest| shell-option(--enable-uint8array-base64) skip-if(!Uint8Array.fromBase64||!xulRuntime.shell) -- uint8array-base64 is not enabled unconditionally, requires shell-options
   2 // Copyright (C) 2024 Kevin Gibbons. All rights reserved.
   3 // This code is governed by the BSD license found in the LICENSE file.
   4 /*---
   5 esid: sec-uint8array.frombase64
   6 description: Handling of final chunks in Uint8Array.fromBase64
   7 includes: [compareArray.js]
   8 features: [uint8array-base64, TypedArray]
   9 ---*/
  10
  11 // padding
  12 assert.compareArray(Uint8Array.fromBase64('ZXhhZg=='), [101, 120, 97, 102]);
  13 assert.compareArray(Uint8Array.fromBase64('ZXhhZg==', { lastChunkHandling: 'loose' }), [101, 120, 97, 102]);
  14 assert.compareArray(Uint8Array.fromBase64('ZXhhZg==', { lastChunkHandling: 'stop-before-partial' }), [101, 120, 97, 102]);
  15 assert.compareArray(Uint8Array.fromBase64('ZXhhZg==', { lastChunkHandling: 'strict' }), [101, 120, 97, 102]);
  16
  17 // no padding
  18 assert.compareArray(Uint8Array.fromBase64('ZXhhZg'), [101, 120, 97, 102]);
  19 assert.compareArray(Uint8Array.fromBase64('ZXhhZg', { lastChunkHandling: 'loose' }), [101, 120, 97, 102]);
  20 assert.compareArray(Uint8Array.fromBase64('ZXhhZg', { lastChunkHandling: 'stop-before-partial' }), [101, 120, 97]);
  21 assert.throws(SyntaxError, function() {
  22   Uint8Array.fromBase64('ZXhhZg', { lastChunkHandling: 'strict' });
  23 });
  24
  25 // non-zero padding bits
  26 assert.compareArray(Uint8Array.fromBase64('ZXhhZh=='), [101, 120, 97, 102]);
  27 assert.compareArray(Uint8Array.fromBase64('ZXhhZh==', { lastChunkHandling: 'loose' }), [101, 120, 97, 102]);
  28 assert.compareArray(Uint8Array.fromBase64('ZXhhZh==', { lastChunkHandling: 'stop-before-partial' }), [101, 120, 97, 102]);
  29 assert.throws(SyntaxError, function() {
  30   Uint8Array.fromBase64('ZXhhZh==', { lastChunkHandling: 'strict' });
  31 });
  32
  33 // non-zero padding bits, no padding
  34 assert.compareArray(Uint8Array.fromBase64('ZXhhZh'), [101, 120, 97, 102]);
  35 assert.compareArray(Uint8Array.fromBase64('ZXhhZh', { lastChunkHandling: 'loose' }), [101, 120, 97, 102]);
  36 assert.compareArray(Uint8Array.fromBase64('ZXhhZh', { lastChunkHandling: 'stop-before-partial' }), [101, 120, 97]);
  37 assert.throws(SyntaxError, function() {
  38   Uint8Array.fromBase64('ZXhhZh', { lastChunkHandling: 'strict' });
  39 });
  40
  41 // partial padding
  42 assert.throws(SyntaxError, function() {
  43   Uint8Array.fromBase64('ZXhhZg=');
  44 });
  45 assert.throws(SyntaxError, function() {
  46   Uint8Array.fromBase64('ZXhhZg=', { lastChunkHandling: 'loose' });
  47 });
  48 assert.compareArray(Uint8Array.fromBase64('ZXhhZg=', { lastChunkHandling: 'stop-before-partial' }), [101, 120, 97]);
  49 assert.throws(SyntaxError, function() {
  50   Uint8Array.fromBase64('ZXhhZg=', { lastChunkHandling: 'strict' });
  51 });
  52
  53 // excess padding
  54 assert.throws(SyntaxError, function() {
  55   Uint8Array.fromBase64('ZXhhZg===');
  56 });
  57 assert.throws(SyntaxError, function() {
  58   Uint8Array.fromBase64('ZXhhZg===', { lastChunkHandling: 'loose' });
  59 });
  60 assert.throws(SyntaxError, function() {
  61   Uint8Array.fromBase64('ZXhhZg===', { lastChunkHandling: 'stop-before-partial' });
  62 });
  63 assert.throws(SyntaxError, function() {
  64   Uint8Array.fromBase64('ZXhhZg===', { lastChunkHandling: 'strict' });
  65 });
  66
  67 reportCompare(0, 0);