[tests] add core/widget tests

doc/NOTES.md

@@ -22,3 +22,4 @@
 - convert some stuff to simple attributes to reduce LOCs
 - theme.exclude (battery)
 - use add_widget() instead of core.widget.Widget()
+- use widget index for bumblebee-ctl as alternative (??)

tests/core/test_widget.py

@@ -70,4 +70,22 @@ class widget(unittest.TestCase):
         module.states = ['a', 'b']
         self.assertEqual(['state1', 'state2', 'a', 'b'], self.someWidget.state())
 
+    def test_multiple_widget_themes(self):
+        widget1 = core.widget.Widget(full_text='a')
+        widget2 = core.widget.Widget(full_text='b')
+        widget3 = core.widget.Widget(full_text='c')
+
+        module = TestModule(widgets=[widget1, widget2, widget3])
+        module.set('theme.test', '1,2,3')
+        module.set('theme.test2', 'x')
+
+        self.assertEqual('1', widget1.theme('test'))
+        self.assertEqual('2', widget2.theme('test'))
+        self.assertEqual('3', widget3.theme('test'))
+
+        self.assertEqual('x', widget1.theme('test2'))
+        self.assertEqual(None, widget2.theme('test2'))
+        self.assertEqual(None, widget3.theme('test2'))
+
+
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