Fix some style nitpicks

shell/model/devices/battery.py

@@ -25,10 +25,12 @@ _DISCHARGING_PROP = 'battery.rechargeable.is_discharging'
 
 class Device(device.Device):
     __gproperties__ = {
-        'level' : (int, None, None, 0, 100, 0,
-                   gobject.PARAM_READABLE),
-        'charging' : (bool, None, None, False, gobject.PARAM_READABLE),
-        'discharging' : (bool, None, None, False, gobject.PARAM_READABLE)
+        'level'       : (int, None, None, 0, 100, 0,
+                         gobject.PARAM_READABLE),
+        'charging'    : (bool, None, None, False,
+                         gobject.PARAM_READABLE),
+        'discharging' : (bool, None, None, False,
+                         gobject.PARAM_READABLE)
     }
 
     def __init__(self, udi):

shell/view/devices/battery.py

@@ -66,7 +66,7 @@ class BatteryPalette(Palette):
 
         def update_progress_bar(self, percent):
             self._level = percent
-            fraction = float(percent/100.0)
+            fraction = percent / 100.0
             self._progress_bar.set_fraction(fraction)
 
         def update_charge_status(self, charging, discharging):

tests/test-spread-layout.py

@@ -36,6 +36,7 @@ def _create_icon():
     scale = 1.0 + random.random() * 1.5
     icon = CanvasIcon(scale=scale, xo_color=color,
                       icon_name='theme:stock-buddy')
+    icon.set_tooltip('Test')
     layout.add(icon)
 
     return (len(box.get_children()) < 50)