diff --git a/pygal/test/test_bar.py b/pygal/test/test_bar.py
index d04825c..18f293f 100644
--- a/pygal/test/test_bar.py
+++ b/pygal/test/test_bar.py
@@ -37,6 +37,7 @@ def test_simple_bar():
 
 
 def test_difference():
+    """Tests the difference between labeled graphs and unlabeled graphs"""
     bar = Bar(bar_values=False)
     rng = [-3, -32, -39]
     bar.add('test1', rng)
@@ -52,6 +53,7 @@ def test_difference():
 
 
 def test_bar_percent_difference():
+    """Tests the difference between percent labeled graphs and unlabeled graphs"""
     bar = Bar()
     rng = [-3, -32, -39]
     bar.add('test1', rng)
@@ -68,6 +70,7 @@ def test_bar_percent_difference():
 
 
 def test_chart_renders():
+    """Tests that print values and percent values renders"""
     line_chart = Bar(print_values=True, percent_values=True, print_values_position='top')
     line_chart.title = 'Browser usage evolution (in %)'
     line_chart.x_labels = map(str, range(2002, 2013))
diff --git a/pygal/test/test_gauge.py b/pygal/test/test_gauge.py
index 4919257..80a853b 100644
--- a/pygal/test/test_gauge.py
+++ b/pygal/test/test_gauge.py
@@ -1,5 +1,28 @@
+# -*- coding: utf-8 -*-
+# This file is part of pygal
+#
+# A python svg graph plotting library
+# Copyright © 2012-2016 Kozea
+#
+# This library is free software: you can redistribute it and/or modify it under
+# the terms of the GNU Lesser General Public License as published by the Free
+# Software Foundation, either version 3 of the License, or (at your option) any
+# later version.
+#
+# This library 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 Lesser General Public License for more
+# details.
+#
+# You should have received a copy of the GNU Lesser General Public License
+# along with pygal. If not, see <http://www.gnu.org/licenses/>.
+
+"""Gauge Chart related tests."""
+
+
 from pygal import Gauge
 
+
 def test_render():
     """Tests that a gauge plots"""
     chart = Gauge()