def METHOD_NAME(self):
    output = run_client(['bkr', 'distro-trees-list', '--format=json', '--distro-tree-id', str(self.distro_tree.id)])
    trees = json.loads(output)
    self.assertEquals(len(trees), 1)
    self.assertEquals(trees[0]['distro_tree_id'], self.distro_tree.id)
    self.assertEquals(trees[0]['distro_name'], self.distro_tree.distro.name)