public void insertBulk(final List<MemberCoupon> memberCoupons) {
        String sql = "INSERT IGNORE INTO member_coupon (member_id, coupon_id, created_at, updated_at)" +
                " VALUES (:memberId, :couponId, :createdAt, :updatedAt)";

        namedParameterJdbcTemplate.batchUpdate(sql, chargeStationSqlParameterSource(memberCoupons));
    }
@Test
    void 멤버_쿠폰을_벌크_저장한다() {
        // given
        MemberCoupon memberCoupon = 멤버_쿠폰_생성();

        // when & then
        Assertions.assertDoesNotThrow(() -> memberCouponJdbcRepository.insertBulk(List.of(memberCoupon, memberCoupon, memberCoupon)));
    }