def test_merge_wrong_class(self):
command = self.command
command.mergeable = True
other_command = ComponentCommand(component=self.component)
with self.assertTraitDoesNotChange(command, 'data'):
merged = command.merge(other_command)
self.assertFalse(merged)
self.assertEqual(command.data, (25, 25))
def setUp(self):
self.component = Component()
self.command = ComponentCommand(component=self.component)