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| Current File : //proc/self/root/proc/self/root/home/ubuntu/node-v16.18.1/test/parallel/test-zlib-flush-drain.js |
'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.on('data', () => {
});
deflater.flush(function(err) {
afterFlush = ws.needDrain;
});
deflater.on('drain', function() {
drainCount++;
});
process.once('exit', function() {
assert.strictEqual(
beforeFlush, true);
assert.strictEqual(
afterFlush, false);
assert.strictEqual(
drainCount, 1);
assert.strictEqual(
flushCount, 1);
});
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