test: MeetingFixture를 구현하고, MeetingRepository를 테스트한다.

src/test/java/net/teumteum/meeting/domain/MeetingFixture.java

@@ -0,0 +1,70 @@
+package net.teumteum.meeting.domain;
+
+import lombok.Builder;
+
+import java.time.LocalDate;
+import java.time.LocalTime;
+import java.util.ArrayList;
+import java.util.List;
+
+public class MeetingFixture {
+
+    public static Meeting getMeetingWithId(Long id) {
+        return newMeetingByBuilder(MeetingBuilder.builder()
+                .id(id)
+                .build());
+    }
+
+    public static Meeting getDefaultMeeting() {
+        return newMeetingByBuilder(MeetingBuilder.builder().build());
+    }
+
+    public static Meeting newMeetingByBuilder(MeetingBuilder meetingBuilder) {
+        return new Meeting(
+                meetingBuilder.id,
+                meetingBuilder.title,
+                meetingBuilder.hostUserId,
+                meetingBuilder.participantUserIds,
+                meetingBuilder.topic,
+                meetingBuilder.introduction,
+                meetingBuilder.meetingArea,
+                meetingBuilder.numberOfRecruits,
+                meetingBuilder.promiseDateTime,
+                meetingBuilder.imageUrls
+        );
+    }
+
+    @Builder
+    public static class MeetingBuilder {
+        @Builder.Default
+        private Long id = 0L;
+
+        @Builder.Default
+        private String title = "모임 제목";
+
+        @Builder.Default
+        private Long hostUserId = 0L;
+
+        @Builder.Default
+        private List<Long> participantUserIds = new ArrayList<>(List.of(0L));
+
+        @Builder.Default
+        private Topic topic = Topic.스터디;
+
+        @Builder.Default
+        private String introduction = "모임에 대한 간단한 설명입니다.";
+
+        @Builder.Default
+        private MeetingArea meetingArea = new MeetingArea("서울특별시", "강남구", "강남대로 390");
+
+        @Builder.Default
+        private int numberOfRecruits = 3;
+
+        @Builder.Default
+        private PromiseDateTime promiseDateTime = new PromiseDateTime(LocalDate.of(2023, 1, 1), LocalTime.of(12, 0));
+
+        @Builder.Default
+        private List<String> imageUrls = new ArrayList<>(List.of("https://www.google.com"));
+    }
+
+}

src/test/java/net/teumteum/meeting/domain/MeetingRepositoryTest.java

@@ -0,0 +1,67 @@
+package net.teumteum.meeting.domain;
+
+import jakarta.persistence.EntityManager;
+import org.assertj.core.api.Assertions;
+import org.junit.jupiter.api.DisplayName;
+import org.junit.jupiter.api.Nested;
+import org.junit.jupiter.api.Test;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.boot.test.autoconfigure.orm.jpa.DataJpaTest;
+
+import java.util.Optional;
+
+@DataJpaTest
+@DisplayName("MeetingRepository 클래스의")
+class MeetingRepositoryTest {
+
+    @Autowired
+    private MeetingRepository meetingRepository;
+
+    @Autowired
+    private EntityManager entityManager;
+
+    @Nested
+    @DisplayName("save 메소드는")
+    class Save_method {
+
+        @Test
+        @DisplayName("올바른 MeetingEntity가 들어오면, 모임 저장에 성공한다.")
+        void Save_success_if_correct_meeting_entered() {
+            // given
+            var newMeeting = MeetingFixture.getDefaultMeeting();
+
+            // when
+            var result = Assertions.catchException(() -> meetingRepository.saveAndFlush(newMeeting));
+
+            // then
+            Assertions.assertThat(result).isNull();
+        }
+    }
+
+    @Nested
+    @DisplayName("findById 메소드는")
+    class FindById_method {
+
+        @Test
+        @DisplayName("저장된 모임의 id로 조회하면, 모임을 반환한다.")
+        void Find_success_if_exists_meeting_id_input() {
+            // given
+            var id = 1L;
+            var existsMeeting = MeetingFixture.getMeetingWithId(id);
+
+            meetingRepository.saveAndFlush(existsMeeting);
+            entityManager.clear();
+
+            // when
+            var result = meetingRepository.findById(id);
+
+            // then
+            Assertions.assertThat(result)
+                    .isPresent()
+                    .usingRecursiveComparison()
+                    .ignoringFields("value.createdAt", "value.updatedAt")
+                    .isEqualTo(Optional.of(existsMeeting));
+        }
+    }
+
+}