mirror of
https://github.com/denoland/deno.git
synced 2024-12-24 16:19:12 -05:00
38 lines
1.1 KiB
JavaScript
38 lines
1.1 KiB
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 "node/_tools/setup.ts". Do not modify this file manually
|
||
|
|
|
||
|
|
'use strict';
|
||
|
|
|
||
|
|
const common = require('../common');
|
||
|
|
|
||
|
|
// This test ensures that Readable stream will call _read() for streams
|
||
|
|
// with highWaterMark === 0 upon .read(0) instead of just trying to
|
||
|
|
// emit 'readable' event.
|
||
|
|
|
||
|
|
const assert = require('assert');
|
||
|
|
const { Readable } = require('stream');
|
||
|
|
|
||
|
|
const r = new Readable({
|
||
|
|
// Must be called only once upon setting 'readable' listener
|
||
|
|
read: common.mustCall(),
|
||
|
|
highWaterMark: 0,
|
||
|
|
});
|
||
|
|
|
||
|
|
let pushedNull = false;
|
||
|
|
// This will trigger read(0) but must only be called after push(null)
|
||
|
|
// because the we haven't pushed any data
|
||
|
|
r.on('readable', common.mustCall(() => {
|
||
|
|
assert.strictEqual(r.read(), null);
|
||
|
|
assert.strictEqual(pushedNull, true);
|
||
|
|
}));
|
||
|
|
r.on('end', common.mustCall());
|
||
|
|
process.nextTick(() => {
|
||
|
|
assert.strictEqual(r.read(), null);
|
||
|
|
pushedNull = true;
|
||
|
|
r.push(null);
|
||
|
|
});
|