6cd12be347Adds an experimental `readableWebStream()` method to `FileHandle` that returns a web `ReadableStream` Signed-off-by: James M Snell <jasnell@gmail.com> PR-URL: https://github.com/nodejs/node/pull/39331 Reviewed-By: Robert Nagy <ronagy@icloud.com> Reviewed-By: Matteo Collina <matteo.collina@gmail.com> Reviewed-By: Anna Henningsen <anna@addaleax.net>
87 lines
2.2 KiB
JavaScript
87 lines
2.2 KiB
JavaScript
'use strict';
|
|
|
|
const common = require('../common');
|
|
const assert = require('assert');
|
|
|
|
const {
|
|
readFileSync,
|
|
} = require('fs');
|
|
|
|
const {
|
|
open,
|
|
} = require('fs/promises');
|
|
|
|
const check = readFileSync(__filename, { encoding: 'utf8' });
|
|
|
|
// Make sure the ReadableStream works...
|
|
(async () => {
|
|
const dec = new TextDecoder();
|
|
const file = await open(__filename);
|
|
let data = '';
|
|
for await (const chunk of file.readableWebStream())
|
|
data += dec.decode(chunk);
|
|
|
|
assert.strictEqual(check, data);
|
|
|
|
assert.throws(() => file.readableWebStream(), {
|
|
code: 'ERR_INVALID_STATE',
|
|
});
|
|
|
|
await file.close();
|
|
})().then(common.mustCall());
|
|
|
|
// Make sure that acquiring a ReadableStream fails if the
|
|
// FileHandle is already closed.
|
|
(async () => {
|
|
const file = await open(__filename);
|
|
await file.close();
|
|
|
|
assert.throws(() => file.readableWebStream(), {
|
|
code: 'ERR_INVALID_STATE',
|
|
});
|
|
})().then(common.mustCall());
|
|
|
|
// Make sure that acquiring a ReadableStream fails if the
|
|
// FileHandle is already closing.
|
|
(async () => {
|
|
const file = await open(__filename);
|
|
file.close();
|
|
|
|
assert.throws(() => file.readableWebStream(), {
|
|
code: 'ERR_INVALID_STATE',
|
|
});
|
|
})().then(common.mustCall());
|
|
|
|
// Make sure the ReadableStream is closed when the underlying
|
|
// FileHandle is closed.
|
|
(async () => {
|
|
const file = await open(__filename);
|
|
const readable = file.readableWebStream();
|
|
const reader = readable.getReader();
|
|
file.close();
|
|
await reader.closed;
|
|
})().then(common.mustCall());
|
|
|
|
// Make sure the ReadableStream is closed when the underlying
|
|
// FileHandle is closed.
|
|
(async () => {
|
|
const file = await open(__filename);
|
|
const readable = file.readableWebStream();
|
|
file.close();
|
|
const reader = readable.getReader();
|
|
await reader.closed;
|
|
})().then(common.mustCall());
|
|
|
|
// Make sure that the FileHandle is properly marked "in use"
|
|
// when a ReadableStream has been acquired for it.
|
|
(async () => {
|
|
const file = await open(__filename);
|
|
file.readableWebStream();
|
|
const mc = new MessageChannel();
|
|
mc.port1.onmessage = common.mustNotCall();
|
|
assert.throws(() => mc.port2.postMessage(file, [file]), {
|
|
code: 25 // DataCloneError
|
|
});
|
|
mc.port1.close();
|
|
await file.close();
|
|
})().then(common.mustCall());
|