lix-website/themes/lix/assets/bootstrap/node_modules/binary/test/peek.js
2024-04-26 22:49:34 -06:00

41 lines
1.1 KiB
JavaScript

var binary = require('../');
var test = require('tap').test;
var EventEmitter = require('events').EventEmitter;
test('peek', function (t) {
t.plan(4);
var bufs = [
new Buffer([ 6, 1, 6, 1, 6, 9, 0, 0, 0, 97 ]),
new Buffer([ 98, 99 ]),
new Buffer([ 100, 101, 102 ]),
];
var stream = new EventEmitter;
var iv = setInterval(function () {
var buf = bufs.shift();
if (buf) stream.emit('data', buf)
else clearInterval(iv)
}, 20);
binary.stream(stream)
.buffer('sixone', 5)
.peek(function () {
this.word32le('len');
})
.buffer('buf', 'len')
.word8('x')
.tap(function (vars) {
t.same(
[].slice.call(vars.sixone),
[].slice.call(new Buffer([ 6, 1, 6, 1, 6 ]))
);
t.same(vars.buf.length, vars.len);
t.same(
[].slice.call(vars.buf),
[ 9, 0, 0, 0, 97, 98, 99, 100, 101 ]
);
t.same(vars.x, 102);
})
;
});