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84 lines
2.9 KiB
CoffeeScript
84 lines
2.9 KiB
CoffeeScript
{DecodeStream} = require '../'
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should = require('chai').should()
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describe 'DecodeStream', ->
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it 'should read a buffer', ->
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buf = new Buffer [1,2,3]
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stream = new DecodeStream buf
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stream.readBuffer(buf.length).should.deep.equal new Buffer [1,2,3]
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it 'should readUInt16BE', ->
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buf = new Buffer [0xab, 0xcd]
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stream = new DecodeStream buf
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stream.readUInt16BE().should.deep.equal 0xabcd
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it 'should readUInt16LE', ->
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buf = new Buffer [0xab, 0xcd]
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stream = new DecodeStream buf
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stream.readUInt16LE().should.deep.equal 0xcdab
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it 'should readUInt24BE', ->
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buf = new Buffer [0xab, 0xcd, 0xef]
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stream = new DecodeStream buf
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stream.readUInt24BE().should.deep.equal 0xabcdef
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it 'should readUInt24LE', ->
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buf = new Buffer [0xab, 0xcd, 0xef]
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stream = new DecodeStream buf
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stream.readUInt24LE().should.deep.equal 0xefcdab
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it 'should readInt24BE', ->
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buf = new Buffer [0xff, 0xab, 0x24]
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stream = new DecodeStream buf
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stream.readInt24BE().should.deep.equal -21724
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it 'should readInt24LE', ->
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buf = new Buffer [0x24, 0xab, 0xff]
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stream = new DecodeStream buf
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stream.readInt24LE().should.deep.equal -21724
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describe 'readString', ->
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it 'should decode ascii by default', ->
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buf = new Buffer 'some text', 'ascii'
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stream = new DecodeStream buf
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stream.readString(buf.length).should.equal 'some text'
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it 'should decode ascii', ->
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buf = new Buffer 'some text', 'ascii'
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stream = new DecodeStream buf
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stream.readString(buf.length, 'ascii').should.equal 'some text'
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it 'should decode utf8', ->
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buf = new Buffer 'unicode! 👍', 'utf8'
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stream = new DecodeStream buf
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stream.readString(buf.length, 'utf8').should.equal 'unicode! 👍'
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it 'should decode utf16le', ->
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buf = new Buffer 'unicode! 👍', 'utf16le'
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stream = new DecodeStream buf
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stream.readString(buf.length, 'utf16le').should.equal 'unicode! 👍'
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it 'should decode ucs2', ->
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buf = new Buffer 'unicode! 👍', 'ucs2'
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stream = new DecodeStream buf
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stream.readString(buf.length, 'ucs2').should.equal 'unicode! 👍'
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it 'should decode utf16be', ->
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buf = new Buffer 'unicode! 👍', 'utf16le'
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for i in [0...buf.length - 1] by 2
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byte = buf[i]
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buf[i] = buf[i + 1]
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buf[i + 1] = byte
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stream = new DecodeStream buf
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stream.readString(buf.length, 'utf16be').should.equal 'unicode! 👍'
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it 'should decode macroman', ->
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buf = new Buffer [0x8a, 0x63, 0x63, 0x65, 0x6e, 0x74, 0x65, 0x64, 0x20, 0x63, 0x68, 0x87, 0x72, 0x61, 0x63, 0x74, 0x65, 0x72, 0x73]
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stream = new DecodeStream buf
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stream.readString(buf.length, 'mac').should.equal 'äccented cháracters'
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it 'should return a buffer for unsupported encodings', ->
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stream = new DecodeStream new Buffer [1, 2, 3]
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stream.readString(3, 'unsupported').should.deep.equal new Buffer [1, 2, 3]
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