diff --git a/tests/Net/SSH1Test.php b/tests/Net/SSH1Test.php
new file mode 100644
index 00000000..fca6ebf0
--- /dev/null
+++ b/tests/Net/SSH1Test.php
@@ -0,0 +1,41 @@
+<?php
+/**
+ * @author     Marc Scholten <marc@pedigital.de>
+ * @copyright  MMXIII Marc Scholten
+ * @license    http://www.opensource.org/licenses/mit-license.html  MIT License
+ */
+
+class SSH1Test extends PhpseclibTestCase
+{
+    public function formatLogDataProvider()
+    {
+        return array(
+            array(
+                array('hello world'),
+                array('<--'),
+                "<--\r\n00000000  68:65:6c:6c:6f:20:77:6f:72:6c:64                 hello world\r\n\r\n"
+            ),
+            array(
+                array('hello', 'world'),
+                array('<--', '<--'),
+                "<--\r\n00000000  68:65:6c:6c:6f                                   hello\r\n\r\n" .
+                "<--\r\n00000000  77:6f:72:6c:64                                   world\r\n\r\n"
+            ),
+        );
+    }
+
+    /**
+     * @dataProvider formatLogDataProvider
+     */
+    public function testFormatLog(array $message_log, array $message_number_log, $expected)
+    {
+        $ssh = $this->getMockBuilder('Net_SSH1')
+            ->disableOriginalConstructor()
+            ->setMethods(null)
+            ->getMock();
+
+        $result = $ssh->_format_log($message_log, $message_number_log);
+
+        $this->assertEquals($expected, $result);
+    }
+}