Add tests:

- sum of column widths equals 100
- column widths tuple has 3 elements

qutebrowser/completion/models/configmodel.py

@@ -28,12 +28,12 @@ from qutebrowser.completion.models import base
 
 class SettingSectionCompletionModel(base.BaseCompletionModel):
 
-    COLUMN_WIDTHS = (20, 70, 10)
-
     """A CompletionModel filled with settings sections."""
 
     # pylint: disable=abstract-method
 
+    COLUMN_WIDTHS = (20, 70, 10)
+
     def __init__(self, parent=None):
         super().__init__(parent)
         cat = self.new_category("Sections")
@@ -44,8 +44,6 @@ class SettingSectionCompletionModel(base.BaseCompletionModel):
 
 class SettingOptionCompletionModel(base.BaseCompletionModel):
 
-    COLUMN_WIDTHS = (20, 70, 10)
-
     """A CompletionModel filled with settings and their descriptions.
 
     Attributes:
@@ -55,6 +53,8 @@ class SettingOptionCompletionModel(base.BaseCompletionModel):
 
     # pylint: disable=abstract-method
 
+    COLUMN_WIDTHS = (20, 70, 10)
+
     def __init__(self, section, parent=None):
         super().__init__(parent)
         cat = self.new_category(section)
@@ -99,8 +99,6 @@ class SettingOptionCompletionModel(base.BaseCompletionModel):
 
 class SettingValueCompletionModel(base.BaseCompletionModel):
 
-    COLUMN_WIDTHS = (20, 70, 10)
-
     """A CompletionModel filled with setting values.
 
     Attributes:
@@ -110,6 +108,8 @@ class SettingValueCompletionModel(base.BaseCompletionModel):
 
     # pylint: disable=abstract-method
 
+    COLUMN_WIDTHS = (20, 70, 10)
+
     def __init__(self, section, option, parent=None):
         super().__init__(parent)
         self._section = section

tests/completion/test_column_widths.py

@@ -0,0 +1,51 @@
+# vim: ft=python fileencoding=utf-8 sts=4 sw=4 et:
+
+# Copyright 2015 Alexander Cogneau <alexander.cogneau@gmail.com>
+#
+# This file is part of qutebrowser.
+#
+# qutebrowser is free software: you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# qutebrowser 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 General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with qutebrowser.  If not, see <http://www.gnu.org/licenses/>.
+
+"""Tests for qutebrowser.completion.models column widths"""
+
+from qutebrowser.completion.models.base import BaseCompletionModel
+from qutebrowser.completion.models.configmodel import (
+    SettingOptionCompletionModel, SettingSectionCompletionModel,
+    SettingValueCompletionModel)
+from qutebrowser.completion.models.miscmodels import (
+    CommandCompletionModel, HelpCompletionModel, QuickmarkCompletionModel,
+    BookmarkCompletionModel, SessionCompletionModel)
+from qutebrowser.completion.models.urlmodel import UrlCompletionModel
+
+
+class TestColumnWidths:
+
+    """Tests for the column widths of the completion models"""
+
+    CLASSES = [BaseCompletionModel, SettingOptionCompletionModel,
+               SettingOptionCompletionModel, SettingSectionCompletionModel,
+               SettingValueCompletionModel, CommandCompletionModel,
+               HelpCompletionModel, QuickmarkCompletionModel,
+               BookmarkCompletionModel, SessionCompletionModel,
+               UrlCompletionModel]
+
+    def test_list_size(self):
+        """Test if there are 3 items in the COLUMN_WIDTHS property"""
+        for model in self.CLASSES:
+            assert model.COLUMN_WIDTHS.__len__() == 3
+
+    def test_column_width_sum(self):
+        """Test if the sum of the widths asserts to 100"""
+        for model in self.CLASSES:
+            assert sum(model.COLUMN_WIDTHS) == 100