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66 lines
2.0 KiB
CoffeeScript
66 lines
2.0 KiB
CoffeeScript
{LazyArray, Pointer, uint8, uint16, DecodeStream, EncodeStream} = require '../'
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should = require('chai').should()
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concat = require 'concat-stream'
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describe 'LazyArray', ->
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describe 'decode', ->
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it 'should decode items lazily', ->
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stream = new DecodeStream new Buffer [1, 2, 3, 4, 5]
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array = new LazyArray uint8, 4
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arr = array.decode(stream)
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arr.should.not.be.an.instanceof Array
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arr.should.have.length 4
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stream.pos.should.equal 4
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arr.get(0).should.equal 1
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arr.get(1).should.equal 2
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arr.get(2).should.equal 3
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arr.get(3).should.equal 4
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should.not.exist arr.get(-1)
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should.not.exist arr.get(5)
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it 'should be able to convert to an array', ->
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stream = new DecodeStream new Buffer [1, 2, 3, 4, 5]
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array = new LazyArray uint8, 4
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arr = array.decode(stream)
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arr.toArray().should.deep.equal [1, 2, 3, 4]
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it 'should have an inspect method', ->
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stream = new DecodeStream new Buffer [1, 2, 3, 4, 5]
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array = new LazyArray uint8, 4
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arr = array.decode(stream)
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arr.inspect().should.equal '[ 1, 2, 3, 4 ]'
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it 'should decode length as number before array', ->
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stream = new DecodeStream new Buffer [4, 1, 2, 3, 4, 5]
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array = new LazyArray uint8, uint8
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arr = array.decode(stream)
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arr.toArray().should.deep.equal [1, 2, 3, 4]
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describe 'size', ->
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it 'should work with LazyArrays', ->
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stream = new DecodeStream new Buffer [1, 2, 3, 4, 5]
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array = new LazyArray uint8, 4
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arr = array.decode(stream)
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array.size(arr).should.equal 4
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describe 'encode', ->
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it 'should work with LazyArrays', (done) ->
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stream = new DecodeStream new Buffer [1, 2, 3, 4, 5]
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array = new LazyArray uint8, 4
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arr = array.decode(stream)
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enc = new EncodeStream
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enc.pipe concat (buf) ->
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buf.should.deep.equal new Buffer [1, 2, 3, 4]
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done()
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array.encode(enc, arr)
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enc.end()
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