def test_iadd(self):
feature = Feature([('bob', 3), ('joe', 1), ('bobert', 1)])
feature += [('bob', 1)]
self.assertEqual(feature.value('bob'), 4)
feature += ['bob']
self.assertEqual(feature.value('bob'), 5)
feature += 'bob'
self.assertEqual(feature.value('bob'), 6)
def test_isub(self):
feature = Feature([('bob', 3), ('joe', 1), ('bobert', 1)])
feature -= [('bob', 1)]
self.assertEqual(feature.value('bob'), 2)
feature -= ['bob']
self.assertEqual(feature.value('bob'), 1)
feature -= 'bob'
self.assertEqual(feature.value('bob'), 0)
def test_extend(self):
feature = Feature([('bob', 3), ('joe', 1), ('bobert', 1)])
feature.extend([('bob', 1)])
self.assertEqual(feature.value('bob'), 4)
feature.extend(['bob'])
self.assertEqual(feature.value('bob'), 5)
feature.extend('bob')
self.assertEqual(feature.value('bob'), 6)