def test_remove_tag_doesnt_error_on_missing_tag(self):
block_device = BlockDevice()
tag = factory.make_name('tag')
#: Test is this doesn't raise an exception
block_device.remove_tag(tag)
def test_remove_tag_deletes_tag(self):
block_device = BlockDevice()
tag = factory.make_name('tag')
block_device.add_tag(tag)
block_device.remove_tag(tag)
self.assertItemsEqual([], block_device.tags)
