} else if profile.MemberID != member.ID {
		t.Fatalf("member id is not equal: expects: %v, got: %v", member.ID, profile.MemberID)
	}

	member.Profile = Profile{}
	DB.Model(&member).Update("Refer", 100)

	var profile2 Profile
	if err := DB.First(&profile2, "id = ?", profile.ID).Error; err != nil {
		t.Fatalf("failed to find profile, got error: %v", err)
	} else if profile2.MemberID != 100 {