'Find a non-existent asset in an existing course.'

@ddt.data(*MODULESTORE_SETUPS)
def test_find_non_existing_assets(self, storebuilder):

    with storebuilder.build() as (__, store):
        course = CourseFactory.create(modulestore=store)
        new_asset_loc = course.id.make_asset_key('asset', 'burnside.jpg')
        asset_md = store.find_asset_metadata(new_asset_loc)
        self.assertIsNone(asset_md)
