feat: Add problemId on GetSolutionResponse (#390)

Author: hwangjokim

src/main/java/com/gamzabat/algohub/feature/solution/dto/GetSolutionResponse.java

@@ -11,6 +11,7 @@
 @Getter
 public class GetSolutionResponse {
 	private final Long solutionId;
+	private final Long problemId;
 	private final String problemTitle;
 	private final Integer problemLevel;
 	private final Integer accuracy;
@@ -32,6 +33,7 @@ public static GetSolutionResponse toDTO(Solution solution, Integer accuracy, Int
 		Integer totalMemberCount, Long commentCount, Boolean isRead) {
 		return GetSolutionResponse.builder()
 			.solutionId(solution.getId())
+			.problemId(solution.getProblem().getId())
 			.problemTitle(solution.getProblem().getTitle())
 			.problemLevel(solution.getProblem().getLevel())
 			.accuracy(accuracy)

src/test/java/com/gamzabat/algohub/service/SolutionServiceTest.java

@@ -664,6 +664,7 @@ void getMySolutionsInGroupExpired() {
 			assertThat(responses.getContent().get(i).getNickname()).isEqualTo("nickname1");
 			assertThat(responses.getContent().get(i).getIsRead()).isEqualTo(false);
 			assertThat(responses.getContent().get(i).getProblemLevel()).isEqualTo(problem1.getLevel());
+			assertThat(responses.getContent().getFirst().getProblemId()).isEqualTo(problem1.getId());
 		}
 	}
 
@@ -712,6 +713,7 @@ void getMySolutionsInProgress() {
 			assertThat(responses.getContent().get(i).getIsRead()).isEqualTo(true);
 			assertThat(responses.getContent().get(i).getGroupId()).isEqualTo(
 				problem.getStudyGroup().getId());
+			assertThat(responses.getContent().getFirst().getProblemId()).isEqualTo(problem1.getId());
 		}
 	}
 
@@ -767,6 +769,7 @@ void getMySolutionsExpired() {
 			assertThat(responses.getContent().get(i).getIsRead()).isEqualTo(false);
 			assertThat(responses.getContent().get(i).getGroupId()).isEqualTo(
 				problem2.getStudyGroup().getId());
+			assertThat(responses.getContent().getFirst().getProblemId()).isEqualTo(problem1.getId());
 		}
 	}