info, err := s.adm.InfoCannedPolicy(ctx, "readwrite")
	if err != nil {
		c.Fatalf("policy info err: %v", err)
	}

	infoStr := string(info)
	if !strings.Contains(infoStr, `"s3:PutObject"`) || !strings.Contains(infoStr, ":"+bucket+"/") {
		c.Fatalf("policy contains unexpected content!")
	}
}

func (s *TestSuiteIAM) TestGroupAddRemove(c *check) {
	ctx, cancel := context.WithTimeout(context.Background(), testDefaultTimeout)