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diff --git a/tests/lzss/tmatchring.nim b/tests/lzss/tmatchring.nim
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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, sequtils, algorithm
+import lzss/matchring
+
+suite "matchring":
+  test "items (empty)":
+    var ring = initMatchRing()
+    check toSeq(ring.items).len == 0
+
+  test "addMatch, items (partial)":
+    var ring = initMatchRing()
+    let items = [0, 1, 2]
+    for i in items: ring.addMatch(i)
+    check toSeq(ring.items) == items.reversed()
+
+  test "addMatch, items (rolling)":
+    var ring = initMatchRing()
+    let items = toSeq(0..13)
+    for i in items: ring.addMatch(i)
+    check toSeq(ring.items) == items[^matchLimit..<items.len].reversed()