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135 lines
3.3 KiB
CoffeeScript
135 lines
3.3 KiB
CoffeeScript
{Struct, String:StringT, Pointer, uint8, DecodeStream, EncodeStream} = require '../'
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should = require('chai').should()
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concat = require 'concat-stream'
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describe 'Struct', ->
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describe 'decode', ->
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it 'should decode into an object', ->
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stream = new DecodeStream new Buffer '\x05devon\x15'
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struct = new Struct
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name: new StringT uint8
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age: uint8
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struct.decode(stream).should.deep.equal
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name: 'devon'
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age: 21
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it 'should support process hook', ->
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stream = new DecodeStream new Buffer '\x05devon\x20'
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struct = new Struct
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name: new StringT uint8
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age: uint8
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struct.process = ->
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@canDrink = @age >= 21
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struct.decode(stream).should.deep.equal
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name: 'devon'
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age: 32
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canDrink: true
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it 'should support function keys', ->
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stream = new DecodeStream new Buffer '\x05devon\x20'
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struct = new Struct
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name: new StringT uint8
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age: uint8
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canDrink: -> @age >= 21
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struct.decode(stream).should.deep.equal
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name: 'devon'
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age: 32
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canDrink: true
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describe 'size', ->
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it 'should compute the correct size', ->
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struct = new Struct
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name: new StringT uint8
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age: uint8
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struct.size(name: 'devon', age: 21).should.equal 7
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it 'should compute the correct size with pointers', ->
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struct = new Struct
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name: new StringT uint8
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age: uint8
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ptr: new Pointer uint8, new StringT uint8
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size = struct.size
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name: 'devon'
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age: 21
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ptr: 'hello'
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size.should.equal 14
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it 'should get the correct size when no value is given', ->
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struct = new Struct
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name: new StringT 4
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age: uint8
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struct.size().should.equal 5
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it 'should throw when getting non-fixed length size and no value is given', ->
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struct = new Struct
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name: new StringT uint8
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age: uint8
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should.throw ->
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struct.size()
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, /not a fixed size/i
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describe 'encode', ->
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it 'should encode objects to buffers', (done) ->
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stream = new EncodeStream
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stream.pipe concat (buf) ->
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buf.should.deep.equal new Buffer '\x05devon\x15'
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done()
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struct = new Struct
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name: new StringT uint8
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age: uint8
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struct.encode stream,
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name: 'devon'
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age: 21
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stream.end()
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it 'should support preEncode hook', (done) ->
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stream = new EncodeStream
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stream.pipe concat (buf) ->
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buf.should.deep.equal new Buffer '\x05devon\x15'
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done()
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struct = new Struct
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nameLength: uint8
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name: new StringT 'nameLength'
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age: uint8
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struct.preEncode = ->
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@nameLength = @name.length
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struct.encode stream,
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name: 'devon'
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age: 21
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stream.end()
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it 'should encode pointer data after structure', (done) ->
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stream = new EncodeStream
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stream.pipe concat (buf) ->
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buf.should.deep.equal new Buffer '\x05devon\x15\x08\x05hello'
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done()
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struct = new Struct
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name: new StringT uint8
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age: uint8
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ptr: new Pointer uint8, new StringT uint8
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struct.encode stream,
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name: 'devon'
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age: 21
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ptr: 'hello'
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stream.end()
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