eb9d7a437e
PR-URL: https://github.com/nodejs/node/pull/33770 Reviewed-By: Daijiro Wachi <daijiro.wachi@gmail.com> Reviewed-By: Shingo Inoue <leko.noor@gmail.com> Reviewed-By: Rich Trott <rtrott@gmail.com> Reviewed-By: Joyee Cheung <joyeec9h3@gmail.com>
50 lines
2.3 KiB
JavaScript
50 lines
2.3 KiB
JavaScript
// META: global=window,worker
|
|
// META: script=resources/readable-stream-from-array.js
|
|
// META: script=resources/readable-stream-to-array.js
|
|
|
|
'use strict';
|
|
|
|
const inputBytes = [73, 32, 240, 159, 146, 153, 32, 115, 116, 114, 101,
|
|
97, 109, 115];
|
|
for (const splitPoint of [2, 3, 4, 5]) {
|
|
promise_test(async () => {
|
|
const input = readableStreamFromArray(
|
|
[new Uint8Array(inputBytes.slice(0, splitPoint)),
|
|
new Uint8Array(inputBytes.slice(splitPoint))]);
|
|
const expectedOutput = ['I ', '\u{1F499} streams'];
|
|
const output = input.pipeThrough(new TextDecoderStream());
|
|
const array = await readableStreamToArray(output);
|
|
assert_array_equals(array, expectedOutput,
|
|
'the split code point should be in the second chunk ' +
|
|
'of the output');
|
|
}, 'a code point split between chunks should not be emitted until all ' +
|
|
'bytes are available; split point = ' + splitPoint);
|
|
}
|
|
|
|
promise_test(async () => {
|
|
const splitPoint = 6;
|
|
const input = readableStreamFromArray(
|
|
[new Uint8Array(inputBytes.slice(0, splitPoint)),
|
|
new Uint8Array(inputBytes.slice(splitPoint))]);
|
|
const output = input.pipeThrough(new TextDecoderStream());
|
|
const array = await readableStreamToArray(output);
|
|
assert_array_equals(array, ['I \u{1F499}', ' streams'],
|
|
'the multibyte character should be in the first chunk ' +
|
|
'of the output');
|
|
}, 'a code point should be emitted as soon as all bytes are available');
|
|
|
|
for (let splitPoint = 1; splitPoint < 7; ++splitPoint) {
|
|
promise_test(async () => {
|
|
const input = readableStreamFromArray(
|
|
[new Uint8Array(inputBytes.slice(0, splitPoint)),
|
|
new Uint8Array([]),
|
|
new Uint8Array(inputBytes.slice(splitPoint))]);
|
|
const concatenatedOutput = 'I \u{1F499} streams';
|
|
const output = input.pipeThrough(new TextDecoderStream());
|
|
const array = await readableStreamToArray(output);
|
|
assert_equals(array.length, 2, 'two chunks should be output');
|
|
assert_equals(array[0].concat(array[1]), concatenatedOutput,
|
|
'output should be unchanged by the empty chunk');
|
|
}, 'an empty chunk inside a code point split between chunks should not ' +
|
|
'change the output; split point = ' + splitPoint);
|
|
}
|