mirror of https://github.com/lukechilds/node.git
You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
48 lines
1.2 KiB
48 lines
1.2 KiB
'use strict';
|
|
require('../common');
|
|
const assert = require('assert');
|
|
const zlib = require('zlib');
|
|
|
|
const bigData = Buffer.alloc(10240, 'x');
|
|
|
|
const opts = {
|
|
level: 0,
|
|
highWaterMark: 16
|
|
};
|
|
|
|
const deflater = zlib.createDeflate(opts);
|
|
|
|
// shim deflater.flush so we can count times executed
|
|
let flushCount = 0;
|
|
let drainCount = 0;
|
|
|
|
const flush = deflater.flush;
|
|
deflater.flush = function(kind, callback) {
|
|
flushCount++;
|
|
flush.call(this, kind, callback);
|
|
};
|
|
|
|
deflater.write(bigData);
|
|
|
|
const ws = deflater._writableState;
|
|
const beforeFlush = ws.needDrain;
|
|
let afterFlush = ws.needDrain;
|
|
|
|
deflater.flush(function(err) {
|
|
afterFlush = ws.needDrain;
|
|
});
|
|
|
|
deflater.on('drain', function() {
|
|
drainCount++;
|
|
});
|
|
|
|
process.once('exit', function() {
|
|
assert.strictEqual(beforeFlush, true, 'before calling flush, writable ' +
|
|
'stream should need to drain');
|
|
assert.strictEqual(afterFlush, false, 'after calling flush, writable ' +
|
|
'stream should not need to drain');
|
|
assert.strictEqual(drainCount, 1,
|
|
'the deflater should have emitted a single drain event');
|
|
assert.strictEqual(flushCount, 2,
|
|
'flush should be called twice');
|
|
});
|
|
|