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# gzip-like LZSS compressor
# Copyright (C) 2018 Pacien TRAN-GIRARD
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU Affero General Public License as
# published by the Free Software Foundation, either version 3 of the
# License, or (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU Affero General Public License for more details.
#
# You should have received a copy of the GNU Affero General Public License
# along with this program. If not, see <https://www.gnu.org/licenses/>.
import unittest, streams
import bitreader, bitwriter, streamblock
suite "streamblock":
test "serialise":
let rawStream = newStringStream()
defer: rawStream.close()
rawStream.write(0xFEDC_BA98_7654_3210'u64)
rawStream.setPosition(0)
let rawBitReader = rawStream.bitReader()
let streamBlock = readRaw(rawBitReader, uncompressed)
let outputStream = newStringStream()
defer: outputStream.close()
let outputBitWriter = outputStream.bitWriter()
streamBlock.writeSerialisedTo(outputBitWriter)
outputBitWriter.flush()
outputStream.setPosition(0)
let produceReader = outputStream.bitReader()
check produceReader.readBool() == true # last block flag
check produceReader.readBits(2, uint8) == 0x00'u8 # block kind
check produceReader.readBits(16, uint16) == 64 # raw block length
check produceReader.readSeq(64, uint8) == (64, @[0x10'u8, 0x32, 0x54, 0x76, 0x98, 0xBA, 0xDC, 0xFE]) # raw block content
discard produceReader.readBits(8 - 2 - 1, uint8)
check produceReader.atEnd()
test "deserialise":
let serialisedStream = newStringStream()
defer: serialisedStream.close()
let serialisedBitWriter = serialisedStream.bitWriter()
serialisedBitWriter.writeBool(true)
serialisedBitWriter.writeBits(2, 0x00'u8)
serialisedBitWriter.writeBits(16, 64'u16)
serialisedBitWriter.writeBits(64, 0xFEDC_BA98_7654_3210'u64)
serialisedBitWriter.flush()
serialisedStream.setPosition(0)
let serialisedBitReader = serialisedStream.bitReader()
let streamBlock = readSerialised(serialisedBitReader)
let outputStream = newStringStream()
defer: outputStream.close()
let outputBitWriter = outputStream.bitWriter()
streamBlock.writeRawTo(outputBitWriter)
outputBitWriter.flush()
outputStream.setPosition(0)
check outputStream.readUint64 == 0xFEDC_BA98_7654_3210'u64
check outputStream.atEnd()
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