implement lzss encoding

1 files changed, 30 insertions, 0 deletions

diff --git a/tests/tlzsschain.nim b/tests/tlzsschain.nim
new file mode 100644
index 0000000..241a0f1
--- /dev/null
+++ b/tests/tlzsschain.nim
@@ -0,0 +1,30 @@
+# 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
+import polyfill, lzssnode, lzsschain
+
+suite "lzsschain":
+  test "decode":
+    let chainArray = [
+      lzssCharacter(0), lzssCharacter(1), lzssCharacter(2),
+      lzssCharacter(3), lzssCharacter(4), lzssCharacter(5),
+      lzssReference(4, 6), lzssCharacter(0), lzssCharacter(1),
+      lzssReference(3, 8), lzssCharacter(5),
+      lzssReference(3, 3), lzssCharacter(5)]
+    var chain = lzssChain()
+    for node in chainArray: chain.append(node)
+    check chain.decode() == @[0'u8, 1, 2, 3, 4, 5, 0, 1, 2, 3, 0, 1, 4, 5, 0, 5, 5, 0, 5, 5]