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