[tests] Refactor by removing getter/setter methods

Instead of having get/set methods for simple attributes, use the
attributes directly.

see #23

tests/util.py

@@ -31,49 +31,34 @@ class MockOutput(object):
 class MockWidget(object):
     def __init__(self, text):
         self._text = text
-        self._module = None
-
-    def set_module(self, name):
-        self._module = name
+        self.attr_module = None
 
     def update(self, widgets):
         pass
 
     def module(self):
-        return self._module
+        return self.attr_module
 
     def full_text(self):
         return self._text
 
 class MockTheme(object):
     def __init__(self):
-        self._prefix = None
-        self._suffix = None
-        self._fg = None
-        self._bg = None
-
-    def set_prefix(self, value):
-        self._prefix = value
-
-    def set_suffix(self, value):
-        self._suffix = value
-
-    def set_fg(self, value):
-        self._fg = value
-
-    def set_bg(self, value):
-        self._bg = value
+        self.attr_prefix = None
+        self.attr_suffix = None
+        self.attr_fg = None
+        self.attr_bg = None
 
     def prefix(self, widget):
-        return self._prefix
+        return self.attr_prefix
 
     def suffix(self, widget):
-        return self._suffix
+        return self.attr_suffix
 
     def fg(self, widget):
-        return self._fg
+        return self.attr_fg
 
     def bg(self, widget):
-        return self._bg
+        return self.attr_bg
 
 # vim: tabstop=8 expandtab shiftwidth=4 softtabstop=4