[Step2] 로또(자동) #705
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[Step2] 로또(자동) #705
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ohgillwhan
requested changes
Jun 19, 2023
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| class Lotto(lottoNumbers: List<LottoNumber>) { | ||
| val lottoNumbers: List<LottoNumber> |
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정렬이라면 view의 로직이기에 init에서 제거하고, 생성자를 통해 lottoNumber를 상태로 정의하는건 어떨까요?
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| init { | ||
| require(lottoNumbers.size == LOTTO_SIZE) | ||
| hasNoDuplicatedNumbers(lottoNumbers) |
| require(lottoNumbers.size == LOTTO_SIZE) | ||
| hasNoDuplicatedNumbers(lottoNumbers) | ||
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| this.lottoNumbers = lottoNumbers.sortedBy { it.number } |
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| override fun equals(other: Any?): Boolean { | ||
| if (this === other) return true | ||
| if (other !is Lotto) return false | ||
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| if (lottoNumbers != other.lottoNumbers) return false | ||
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| return true | ||
| } | ||
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| override fun hashCode(): Int { | ||
| return lottoNumbers.hashCode() | ||
| } |
| } | ||
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| fun getSameNumberCount(lotto: Lotto): Int { | ||
| return (LOTTO_SIZE * 2) - (lottoNumbers + lotto.lottoNumbers).toSet().size |
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컴퓨팅 파워는 조금 더 들지라도, 조금 더 간단하게 작성할 수 있을까요?
| import org.junit.jupiter.api.assertThrows | ||
| import java.lang.RuntimeException | ||
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| class LottoTest { |
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테스트코드 내부에 반복은 없애볼까요? 필요하다면 @ParameterizedTest를 사용해볼까요?
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| // when | ||
| // then | ||
| Lotto.of(lottoNumbers) |
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생성을 했으니, 정말 넘겨준 파라미터로 잘 생성이 되었는지 검증도 해볼까요? 그것도 로직일거 같아요~
| val isSame = sameLotto1 == sameLotto2 | ||
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| // then | ||
| assertThat(isSame).isEqualTo(true) |
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| assertThat(sut.lottoResults.size).isEqualTo(1) | ||
| assertThat(sut.lottoResults.first().lotto).isEqualTo(lotto) | ||
| assertThat(sut.lottoResults.first().winningLotto).isEqualTo(winningLotto) | ||
| assertThat(sut.lottoResults.first().sameNumberCount).isEqualTo(6) | ||
| assertThat(sut.lottoResults.first().reward).isEqualTo(LottoReward.WINNER_1ST) | ||
| assertThat(sut.totalPrize).isEqualTo(LottoReward.WINNER_1ST.prize.toMoney()) |
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여기서 생성자를 테스트 하는 코드도 조금은 보이네요! 테스트를 조금 더 분리해볼까요?
| return LottoRoundStatistics(lottos, winningLotto) | ||
| } | ||
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| private fun newLotto() = lottoGenerator.generate() |
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안녕하세요 ~ 로또미션 완료해서 리뷰 요청드립니다.
바쁘신데 새벽에 리뷰요청 죄송합니다 ㅠ