def test_set_overwrites_item(self):
image_dict = BootImageMapping()
image = make_image_spec()
resource = factory.make_name("resource")
image_dict.setdefault(image, factory.make_name("resource"))
image_dict.set(image, resource)
self.assertItemsEqual([(image, resource)], image_dict.items())
def test_setdefault_sets_unset_item(self):
image_dict = BootImageMapping()
image = make_image_spec()
resource = factory.make_name('resource')
image_dict.setdefault(image, resource)
self.assertItemsEqual([(image, resource)], image_dict.items())
