1// Copyright Joyent, Inc. and other Node contributors.
2//
3// Permission is hereby granted, free of charge, to any person obtaining a
4// copy of this software and associated documentation files (the
5// "Software"), to deal in the Software without restriction, including
6// without limitation the rights to use, copy, modify, merge, publish,
7// distribute, sublicense, and/or sell copies of the Software, and to permit
8// persons to whom the Software is furnished to do so, subject to the
9// following conditions:
10//
11// The above copyright notice and this permission notice shall be included
12// in all copies or substantial portions of the Software.
13//
14// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
15// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
16// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN
17// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
18// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
19// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
20// USE OR OTHER DEALINGS IN THE SOFTWARE.
21
22'use strict';
23const common = require('../common');
24const assert = require('assert');
25
26const stream = require('stream');
27const PassThrough = stream.PassThrough;
28
29const src = new PassThrough({ objectMode: true });
30const tx = new PassThrough({ objectMode: true });
31const dest = new PassThrough({ objectMode: true });
32
33const expect = [ -1, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10 ];
34const results = [];
35
36dest.on('data', common.mustCall(function(x) {
37  results.push(x);
38}, expect.length));
39
40src.pipe(tx).pipe(dest);
41
42let i = -1;
43const int = setInterval(common.mustCall(function() {
44  if (results.length === expect.length) {
45    src.end();
46    clearInterval(int);
47    assert.deepStrictEqual(results, expect);
48  } else {
49    src.write(i++);
50  }
51}, expect.length + 1), 1);
52