def METHOD_NAME(self):
    """
    gem.list
    """
    self.run_function("gem.install", [" ".join(self.GEM_LIST)])
    all_ret = self.run_function("gem.list")
    for gem in self.GEM_LIST:
        self.assertIn(gem, all_ret)
    single_ret = self.run_function("gem.list", [self.GEM])
    self.assertIn(self.GEM, single_ret)
    self.run_function("gem.uninstall", [" ".join(self.GEM_LIST)])