// also set in base.
func hasCoverageBit(base, snapshot []byte) bool {
	for i := range snapshot {
		if snapshot[i]&base[i] != 0 {
			return true
		}
	}
	return false
}

func countBits(cov []byte) int {
	n := 0
	for _, c := range cov {
		n += bits.OnesCount8(c)
	}
	return n
}

var (
	coverageEnabled  = len(coverage()) > 0
	coverageSnapshot = make([]byte, len(coverage()))

		return
	}

	DB.Migrator().DropTable(&City{}, &Museum{})

	if err = db.AutoMigrate(&City{}, &Museum{}); err != nil {
		t.Fatalf("failed to migrate countries & cities tables, got error: %v", err)
	}

	city := City{Name: "Amsterdam"}

	err = db.Create(&city).Error
	if err != nil {
		t.Fatalf("failed to create city: %v", err)
	}