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node_modules/restructure/test/LazyArray.coffee
| 65 lines
| 2.0 KiB
| text/coffeescript
| CoffeeScriptLexer
|
| r789 | {LazyArray, Pointer, uint8, uint16, DecodeStream, EncodeStream} = require '../' | |||
| should = require('chai').should() | ||||
| concat = require 'concat-stream' | ||||
| describe 'LazyArray', -> | ||||
| describe 'decode', -> | ||||
| it 'should decode items lazily', -> | ||||
| stream = new DecodeStream new Buffer [1, 2, 3, 4, 5] | ||||
| array = new LazyArray uint8, 4 | ||||
| arr = array.decode(stream) | ||||
| arr.should.not.be.an.instanceof Array | ||||
| arr.should.have.length 4 | ||||
| stream.pos.should.equal 4 | ||||
| arr.get(0).should.equal 1 | ||||
| arr.get(1).should.equal 2 | ||||
| arr.get(2).should.equal 3 | ||||
| arr.get(3).should.equal 4 | ||||
| should.not.exist arr.get(-1) | ||||
| should.not.exist arr.get(5) | ||||
| it 'should be able to convert to an array', -> | ||||
| stream = new DecodeStream new Buffer [1, 2, 3, 4, 5] | ||||
| array = new LazyArray uint8, 4 | ||||
| arr = array.decode(stream) | ||||
| arr.toArray().should.deep.equal [1, 2, 3, 4] | ||||
| it 'should have an inspect method', -> | ||||
| stream = new DecodeStream new Buffer [1, 2, 3, 4, 5] | ||||
| array = new LazyArray uint8, 4 | ||||
| arr = array.decode(stream) | ||||
| arr.inspect().should.equal '[ 1, 2, 3, 4 ]' | ||||
| it 'should decode length as number before array', -> | ||||
| stream = new DecodeStream new Buffer [4, 1, 2, 3, 4, 5] | ||||
| array = new LazyArray uint8, uint8 | ||||
| arr = array.decode(stream) | ||||
| arr.toArray().should.deep.equal [1, 2, 3, 4] | ||||
| describe 'size', -> | ||||
| it 'should work with LazyArrays', -> | ||||
| stream = new DecodeStream new Buffer [1, 2, 3, 4, 5] | ||||
| array = new LazyArray uint8, 4 | ||||
| arr = array.decode(stream) | ||||
| array.size(arr).should.equal 4 | ||||
| describe 'encode', -> | ||||
| it 'should work with LazyArrays', (done) -> | ||||
| stream = new DecodeStream new Buffer [1, 2, 3, 4, 5] | ||||
| array = new LazyArray uint8, 4 | ||||
| arr = array.decode(stream) | ||||
| enc = new EncodeStream | ||||
| enc.pipe concat (buf) -> | ||||
| buf.should.deep.equal new Buffer [1, 2, 3, 4] | ||||
| done() | ||||
| array.encode(enc, arr) | ||||
| enc.end() | ||||