Current File : /home/tradevaly/www/node_modules/restructure/test/Number.coffee

{
  uint8,
  uint16, uint16be, uint16le,
  uint24, uint24be, uint24le,
  uint32, uint32be, uint32le,
  int8,
  int16, int16be, int16le,
  int24, int24be, int24le,
  int32, int32be, int32le,
  float, floatbe, floatle,
  double, doublebe, doublele,
  fixed16, fixed16be, fixed16le,
  fixed32, fixed32be, fixed32le,
  DecodeStream, EncodeStream
} = require '../'
should = require('chai').should()
concat = require 'concat-stream'

describe 'Number', ->
  describe 'uint8', ->
    it 'should decode', ->
      stream = new DecodeStream new Buffer [0xab, 0xff]
      uint8.decode(stream).should.equal 0xab
      uint8.decode(stream).should.equal 0xff

    it 'should have a size', ->
      uint8.size().should.equal 1

    it 'should encode', (done) ->
      stream = new EncodeStream
      stream.pipe concat (buf) ->
        buf.should.deep.equal new Buffer [0xab, 0xff]
        done()

      uint8.encode(stream, 0xab)
      uint8.encode(stream, 0xff)
      stream.end()

  describe 'uint16', ->
    it 'is an alias for uint16be', ->
      uint16.should.equal uint16be

  describe 'uint16be', ->
    it 'should decode', ->
      stream = new DecodeStream new Buffer [0xab, 0xff]
      uint16be.decode(stream).should.equal 0xabff

    it 'should have a size', ->
      uint16be.size().should.equal 2

    it 'should encode', (done) ->
      stream = new EncodeStream
      stream.pipe concat (buf) ->
        buf.should.deep.equal new Buffer [0xab, 0xff]
        done()

      uint16be.encode(stream, 0xabff)
      stream.end()

  describe 'uint16le', ->
    it 'should decode', ->
      stream = new DecodeStream new Buffer [0xff, 0xab]
      uint16le.decode(stream).should.equal 0xabff

    it 'should have a size', ->
      uint16le.size().should.equal 2

    it 'should encode', (done) ->
      stream = new EncodeStream
      stream.pipe concat (buf) ->
        buf.should.deep.equal new Buffer [0xff, 0xab]
        done()

      uint16le.encode(stream, 0xabff)
      stream.end()

  describe 'uint24', ->
    it 'is an alias for uint24be', ->
      uint24.should.equal uint24be

  describe 'uint24be', ->
    it 'should decode', ->
      stream = new DecodeStream new Buffer [0xff, 0xab, 0x24]
      uint24be.decode(stream).should.equal 0xffab24

    it 'should have a size', ->
      uint24be.size().should.equal 3

    it 'should encode', (done) ->
      stream = new EncodeStream
      stream.pipe concat (buf) ->
        buf.should.deep.equal new Buffer [0xff, 0xab, 0x24]
        done()

      uint24be.encode(stream, 0xffab24)
      stream.end()

  describe 'uint24le', ->
    it 'should decode', ->
      stream = new DecodeStream new Buffer [0x24, 0xab, 0xff]
      uint24le.decode(stream).should.equal 0xffab24

    it 'should have a size', ->
      uint24le.size().should.equal 3

    it 'should encode', (done) ->
      stream = new EncodeStream
      stream.pipe concat (buf) ->
        buf.should.deep.equal new Buffer [0x24, 0xab, 0xff]
        done()

      uint24le.encode(stream, 0xffab24)
      stream.end()

  describe 'uint32', ->
    it 'is an alias for uint32be', ->
      uint32.should.equal uint32be

  describe 'uint32be', ->
    it 'should decode', ->
      stream = new DecodeStream new Buffer [0xff, 0xab, 0x24, 0xbf]
      uint32be.decode(stream).should.equal 0xffab24bf

    it 'should have a size', ->
      uint32be.size().should.equal 4

    it 'should encode', (done) ->
      stream = new EncodeStream
      stream.pipe concat (buf) ->
        buf.should.deep.equal new Buffer [0xff, 0xab, 0x24, 0xbf]
        done()

      uint32be.encode(stream, 0xffab24bf)
      stream.end()

  describe 'uint32le', ->
    it 'should decode', ->
      stream = new DecodeStream new Buffer [0xbf, 0x24, 0xab, 0xff]
      uint32le.decode(stream).should.equal 0xffab24bf

    it 'should have a size', ->
      uint32le.size().should.equal 4

    it 'should encode', (done) ->
      stream = new EncodeStream
      stream.pipe concat (buf) ->
        buf.should.deep.equal new Buffer [0xbf, 0x24, 0xab, 0xff]
        done()

      uint32le.encode(stream, 0xffab24bf)
      stream.end()

  describe 'int8', ->
    it 'should decode', ->
      stream = new DecodeStream new Buffer [0x7f, 0xff]
      int8.decode(stream).should.equal 127
      int8.decode(stream).should.equal -1

    it 'should have a size', ->
      int8.size().should.equal 1

    it 'should encode', (done) ->
      stream = new EncodeStream
      stream.pipe concat (buf) ->
        buf.should.deep.equal new Buffer [0x7f, 0xff]
        done()

      int8.encode(stream, 127)
      int8.encode(stream, -1)
      stream.end()

  describe 'int16', ->
    it 'is an alias for int16be', ->
      int16.should.equal int16be

  describe 'int16be', ->
    it 'should decode', ->
      stream = new DecodeStream new Buffer [0xff, 0xab]
      int16be.decode(stream).should.equal -85

    it 'should have a size', ->
      int16be.size().should.equal 2

    it 'should encode', (done) ->
      stream = new EncodeStream
      stream.pipe concat (buf) ->
        buf.should.deep.equal new Buffer [0xff, 0xab]
        done()

      int16be.encode(stream, -85)
      stream.end()

  describe 'int16le', ->
    it 'should decode', ->
      stream = new DecodeStream new Buffer [0xab, 0xff]
      int16le.decode(stream).should.equal -85

    it 'should have a size', ->
      int16le.size().should.equal 2

    it 'should encode', (done) ->
      stream = new EncodeStream
      stream.pipe concat (buf) ->
        buf.should.deep.equal new Buffer [0xab, 0xff]
        done()

      int16le.encode(stream, -85)
      stream.end()

  describe 'int24', ->
    it 'is an alias for int24be', ->
      int24.should.equal int24be

  describe 'int24be', ->
    it 'should decode', ->
      stream = new DecodeStream new Buffer [0xff, 0xab, 0x24]
      int24be.decode(stream).should.equal -21724

    it 'should have a size', ->
      int24be.size().should.equal 3

    it 'should encode', (done) ->
      stream = new EncodeStream
      stream.pipe concat (buf) ->
        buf.should.deep.equal new Buffer [0xff, 0xab, 0x24]
        done()

      int24be.encode(stream, -21724)
      stream.end()

  describe 'int24le', ->
    it 'should decode', ->
      stream = new DecodeStream new Buffer [0x24, 0xab, 0xff]
      int24le.decode(stream).should.equal -21724

    it 'should have a size', ->
      int24le.size().should.equal 3

    it 'should encode', (done) ->
      stream = new EncodeStream
      stream.pipe concat (buf) ->
        buf.should.deep.equal new Buffer [0x24, 0xab, 0xff]
        done()

      int24le.encode(stream, -21724)
      stream.end()

  describe 'int32', ->
    it 'is an alias for int32be', ->
      int32.should.equal int32be

  describe 'int32be', ->
    it 'should decode', ->
      stream = new DecodeStream new Buffer [0xff, 0xab, 0x24, 0xbf]
      int32be.decode(stream).should.equal -5561153

    it 'should have a size', ->
      int32be.size().should.equal 4

    it 'should encode', (done) ->
      stream = new EncodeStream
      stream.pipe concat (buf) ->
        buf.should.deep.equal new Buffer [0xff, 0xab, 0x24, 0xbf]
        done()

      int32be.encode(stream, -5561153)
      stream.end()

  describe 'int32le', ->
    it 'should decode', ->
      stream = new DecodeStream new Buffer [0xbf, 0x24, 0xab, 0xff]
      int32le.decode(stream).should.equal -5561153

    it 'should have a size', ->
      int32le.size().should.equal 4

    it 'should encode', (done) ->
      stream = new EncodeStream
      stream.pipe concat (buf) ->
        buf.should.deep.equal new Buffer [0xbf, 0x24, 0xab, 0xff]
        done()

      int32le.encode(stream, -5561153)
      stream.end()

  describe 'float', ->
    it 'is an alias for floatbe', ->
      float.should.equal floatbe

  describe 'floatbe', ->
    it 'should decode', ->
      stream = new DecodeStream new Buffer [0x43, 0x7a, 0x8c, 0xcd]
      floatbe.decode(stream).should.be.closeTo 250.55, 0.005

    it 'should have a size', ->
      floatbe.size().should.equal 4

    it 'should encode', (done) ->
      stream = new EncodeStream
      stream.pipe concat (buf) ->
        buf.should.deep.equal new Buffer [0x43, 0x7a, 0x8c, 0xcd]
        done()

      floatbe.encode(stream, 250.55)
      stream.end()

  describe 'floatle', ->
    it 'should decode', ->
      stream = new DecodeStream new Buffer [0xcd, 0x8c, 0x7a, 0x43]
      floatle.decode(stream).should.be.closeTo 250.55, 0.005

    it 'should have a size', ->
      floatle.size().should.equal 4

    it 'should encode', (done) ->
      stream = new EncodeStream
      stream.pipe concat (buf) ->
        buf.should.deep.equal new Buffer [0xcd, 0x8c, 0x7a, 0x43]
        done()

      floatle.encode(stream, 250.55)
      stream.end()

  describe 'double', ->
    it 'is an alias for doublebe', ->
      double.should.equal doublebe

  describe 'doublebe', ->
    it 'should decode', ->
      stream = new DecodeStream new Buffer [0x40, 0x93, 0x4a, 0x3d, 0x70, 0xa3, 0xd7, 0x0a]
      doublebe.decode(stream).should.be.equal 1234.56

    it 'should have a size', ->
      doublebe.size().should.equal 8

    it 'should encode', (done) ->
      stream = new EncodeStream
      stream.pipe concat (buf) ->
        buf.should.deep.equal new Buffer [0x40, 0x93, 0x4a, 0x3d, 0x70, 0xa3, 0xd7, 0x0a]
        done()

      doublebe.encode(stream, 1234.56)
      stream.end()

  describe 'doublele', ->
    it 'should decode', ->
      stream = new DecodeStream new Buffer [0x0a, 0xd7, 0xa3, 0x70, 0x3d, 0x4a, 0x93, 0x40]
      doublele.decode(stream).should.be.equal 1234.56

    it 'should have a size', ->
      doublele.size().should.equal 8

    it 'should encode', (done) ->
      stream = new EncodeStream
      stream.pipe concat (buf) ->
        buf.should.deep.equal new Buffer [0x0a, 0xd7, 0xa3, 0x70, 0x3d, 0x4a, 0x93, 0x40]
        done()

      doublele.encode(stream, 1234.56)
      stream.end()

  describe 'fixed16', ->
    it 'is an alias for fixed16be', ->
      fixed16.should.equal fixed16be

  describe 'fixed16be', ->
    it 'should decode', ->
      stream = new DecodeStream new Buffer [0x19, 0x57]
      fixed16be.decode(stream).should.be.closeTo 25.34, 0.005

    it 'should have a size', ->
      fixed16be.size().should.equal 2

    it 'should encode', (done) ->
      stream = new EncodeStream
      stream.pipe concat (buf) ->
        buf.should.deep.equal new Buffer [0x19, 0x57]
        done()

      fixed16be.encode(stream, 25.34)
      stream.end()

  describe 'fixed16le', ->
    it 'should decode', ->
      stream = new DecodeStream new Buffer [0x57, 0x19]
      fixed16le.decode(stream).should.be.closeTo 25.34, 0.005

    it 'should have a size', ->
      fixed16le.size().should.equal 2

    it 'should encode', (done) ->
      stream = new EncodeStream
      stream.pipe concat (buf) ->
        buf.should.deep.equal new Buffer [0x57, 0x19]
        done()

      fixed16le.encode(stream, 25.34)
      stream.end()

  describe 'fixed32', ->
    it 'is an alias for fixed32be', ->
      fixed32.should.equal fixed32be

  describe 'fixed32be', ->
    it 'should decode', ->
      stream = new DecodeStream new Buffer [0x00, 0xfa, 0x8c, 0xcc]
      fixed32be.decode(stream).should.be.closeTo 250.55, 0.005

    it 'should have a size', ->
      fixed32be.size().should.equal 4

    it 'should encode', (done) ->
      stream = new EncodeStream
      stream.pipe concat (buf) ->
        buf.should.deep.equal new Buffer [0x00, 0xfa, 0x8c, 0xcc]
        done()

      fixed32be.encode(stream, 250.55)
      stream.end()

  describe 'fixed32le', ->
    it 'should decode', ->
      stream = new DecodeStream new Buffer [0xcc, 0x8c, 0xfa, 0x00]
      fixed32le.decode(stream).should.be.closeTo 250.55, 0.005

    it 'should have a size', ->
      fixed32le.size().should.equal 4

    it 'should encode', (done) ->
      stream = new EncodeStream
      stream.pipe concat (buf) ->
        buf.should.deep.equal new Buffer [0xcc, 0x8c, 0xfa, 0x00]
        done()

      fixed32le.encode(stream, 250.55)
      stream.end()