tests: Add initial buffer tests.

tests/buffer_test.py

@@ -0,0 +1,16 @@
+# -*- coding: utf-8 -*-
+
+from __future__ import unicode_literals
+
+from matrix.buffer import WeechatChannelBuffer
+
+
+class TestClass(object):
+    def test_buffer(self):
+        b = WeechatChannelBuffer("test_buffer_name", "example.org", "alice")
+        assert b
+
+    def test_buffer_print(self):
+        b = WeechatChannelBuffer("test_buffer_name", "example.org", "alice")
+        b.message("alice", "hello world", 0, 0)
+        assert b