node/test/parallel/test-stream-writableState-uncorked-bufferedRequestCount.js
Ruben Bridgewater 1f85ea979c
tools: capitalize sentences
This adds the `capitalized-comments` eslint rule to verify that
actual sentences use capital letters as starting letters. It ignores
special words and all lines below 62 characters.

PR-URL: https://github.com/nodejs/node/pull/24808
Reviewed-By: Sam Ruby <rubys@intertwingly.net>
Reviewed-By: Trivikram Kamat <trivikr.dev@gmail.com>
Reviewed-By: Ujjwal Sharma <usharma1998@gmail.com>
Reviewed-By: Sakthipriyan Vairamani <thechargingvolcano@gmail.com>
2018-12-10 17:07:18 +01:00

58 lines
1.6 KiB
JavaScript

'use strict';
const common = require('../common');
const assert = require('assert');
const stream = require('stream');
const writable = new stream.Writable();
writable._writev = common.mustCall((chunks, cb) => {
assert.strictEqual(chunks.length, 2);
cb();
}, 1);
writable._write = common.mustCall((chunk, encoding, cb) => {
cb();
}, 1);
// first cork
writable.cork();
assert.strictEqual(writable._writableState.corked, 1);
assert.strictEqual(writable._writableState.bufferedRequestCount, 0);
// cork again
writable.cork();
assert.strictEqual(writable._writableState.corked, 2);
// the first chunk is buffered
writable.write('first chunk');
assert.strictEqual(writable._writableState.bufferedRequestCount, 1);
// first uncork does nothing
writable.uncork();
assert.strictEqual(writable._writableState.corked, 1);
assert.strictEqual(writable._writableState.bufferedRequestCount, 1);
process.nextTick(uncork);
// The second chunk is buffered, because we uncork at the end of tick
writable.write('second chunk');
assert.strictEqual(writable._writableState.corked, 1);
assert.strictEqual(writable._writableState.bufferedRequestCount, 2);
function uncork() {
// second uncork flushes the buffer
writable.uncork();
assert.strictEqual(writable._writableState.corked, 0);
assert.strictEqual(writable._writableState.bufferedRequestCount, 0);
// verify that end() uncorks correctly
writable.cork();
writable.write('third chunk');
writable.end();
// end causes an uncork() as well
assert.strictEqual(writable._writableState.corked, 0);
assert.strictEqual(writable._writableState.bufferedRequestCount, 0);
}