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denoland-deno/cli/tests/node_compat/test/parallel/test-whatwg-encoding-custom-textdecoder-streaming.js
2023-06-02 15:05:32 +09:00

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JavaScript

// deno-fmt-ignore-file
// deno-lint-ignore-file
// Copyright Joyent and Node contributors. All rights reserved. MIT license.
// Taken from Node 18.12.1
// This file is automatically generated by `tools/node_compat/setup.ts`. Do not modify this file manually.
'use strict';
// From: https://github.com/w3c/web-platform-tests/blob/fa9436d12c/encoding/textdecoder-streaming.html
// This is the part that can be run without ICU
require('../common');
const assert = require('assert');
const string =
'\x00123ABCabc\x80\xFF\u0100\u1000\uFFFD\uD800\uDC00\uDBFF\uDFFF';
const octets = {
'utf-8': [
0x00, 0x31, 0x32, 0x33, 0x41, 0x42, 0x43, 0x61, 0x62, 0x63, 0xc2, 0x80,
0xc3, 0xbf, 0xc4, 0x80, 0xe1, 0x80, 0x80, 0xef, 0xbf, 0xbd, 0xf0, 0x90,
0x80, 0x80, 0xf4, 0x8f, 0xbf, 0xbf],
'utf-16le': [
0x00, 0x00, 0x31, 0x00, 0x32, 0x00, 0x33, 0x00, 0x41, 0x00, 0x42, 0x00,
0x43, 0x00, 0x61, 0x00, 0x62, 0x00, 0x63, 0x00, 0x80, 0x00, 0xFF, 0x00,
0x00, 0x01, 0x00, 0x10, 0xFD, 0xFF, 0x00, 0xD8, 0x00, 0xDC, 0xFF, 0xDB,
0xFF, 0xDF]
};
Object.keys(octets).forEach((encoding) => {
for (let len = 1; len <= 5; ++len) {
const encoded = octets[encoding];
const decoder = new TextDecoder(encoding);
let out = '';
for (let i = 0; i < encoded.length; i += len) {
const sub = [];
for (let j = i; j < encoded.length && j < i + len; ++j)
sub.push(encoded[j]);
out += decoder.decode(new Uint8Array(sub), { stream: true });
}
out += decoder.decode();
assert.strictEqual(out, string);
}
});