AssertEqual(t, false, ok)

	// null -> null
	err = DB.Table("unique_tests").AutoMigrate(&UniqueTest2{})
	if err != nil {
		t.Fatalf("AutoMigrate err:%v", err)
	}

	// not trigger alert column
	AssertEqual(t, true, DB.Migrator().HasConstraint(&UniqueTest{}, "uni_unique_tests_name"))
	AssertEqual(t, false, DB.Migrator().HasIndex(&UniqueTest{}, "name"))

	EnvSpeed = "MINIO_SCANNER_SPEED"

	IdleSpeed    = "idle_speed"
	EnvIdleSpeed = "MINIO_SCANNER_IDLE_SPEED"

	ExcessVersions    = "alert_excess_versions"
	EnvExcessVersions = "MINIO_SCANNER_ALERT_EXCESS_VERSIONS"

	ExcessFolders    = "alert_excess_folders"
	EnvExcessFolders = "MINIO_SCANNER_ALERT_EXCESS_FOLDERS"

	// All below are deprecated in October 2022 and
	// replaced them with a single speed parameter
	Delay            = "delay"

			Type:        "string",
		},
		config.HelpKV{
			Key:         ExcessVersions,
			Description: `alert per object beyond this many versions` + defaultHelpPostfix(ExcessVersions),
			Optional:    true,
			Type:        "int",
		},
		config.HelpKV{
			Key:         ExcessFolders,
			Description: `alert beyond this many sub-folders per folder in an erasure set` + defaultHelpPostfix(ExcessFolders),
			Optional:    true,