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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, tables
import bitio/bitreader, bitio/bitwriter
import huffmantree, huffmanencoder
suite "huffencoder":
let tree = huffmanBranch(
huffmanLeaf(1'u),
huffmanBranch(
huffmanLeaf(2'u),
huffmanLeaf(3'u)))
test "buildCodebook":
let codebook = buildCodebook(tree, uint)
check codebook.len == 3
check codebook[1'u] == 0b0
check codebook[2'u] == 0b01
check codebook[3'u] == 0b11
test "encode":
let encoder = tree.encoder(uint)
check encoder.encode(1'u) == 0b0
check encoder.encode(2'u) == 0b01
check encoder.encode(3'u) == 0b11
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