Merge pull request #662 from woowacourse-teams/test/645-thumbnail-ser…

…vice

썸네일 서비스 테스트코드 작성

backend/src/test/java/codezap/template/service/ThumbnailServiceTest.java

@@ -0,0 +1,168 @@
+package codezap.template.service;
+
+import static org.assertj.core.api.Assertions.assertThat;
+import static org.assertj.core.api.Assertions.assertThatThrownBy;
+import static org.junit.jupiter.api.Assertions.assertAll;
+
+import java.util.List;
+
+import org.junit.jupiter.api.DisplayName;
+import org.junit.jupiter.api.Nested;
+import org.junit.jupiter.api.Test;
+import org.junit.jupiter.api.TestTemplate;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.boot.test.context.SpringBootTest;
+
+import codezap.category.repository.CategoryRepository;
+import codezap.fixture.CategoryFixture;
+import codezap.fixture.MemberFixture;
+import codezap.fixture.TemplateFixture;
+import codezap.global.DatabaseIsolation;
+import codezap.global.exception.CodeZapException;
+import codezap.member.repository.MemberRepository;
+import codezap.template.domain.SourceCode;
+import codezap.template.domain.Thumbnail;
+import codezap.template.repository.SourceCodeRepository;
+import codezap.template.repository.TemplateRepository;
+import codezap.template.repository.ThumbnailRepository;
+
+@SpringBootTest
+@DatabaseIsolation
+class ThumbnailServiceTest {
+
+    @Autowired
+    private MemberRepository memberRepository;
+
+    @Autowired
+    private CategoryRepository categoryRepository;
+
+    @Autowired
+    private TemplateRepository templateRepository;
+
+    @Autowired
+    private SourceCodeRepository sourceCodeRepository;
+
+    @Autowired
+    private ThumbnailRepository thumbnailRepository;
+
+    @Autowired
+    private ThumbnailService sut;
+
+    @Nested
+    @DisplayName("썸네일 생성")
+    class CreateThumbnail {
+
+        @Test
+        @DisplayName("썸네일 생성 성공")
+        void createThumbnailSuccess() {
+            var member = memberRepository.save(MemberFixture.getFirstMember());
+            var category = categoryRepository.save(CategoryFixture.getFirstCategory());
+            var template = templateRepository.save(TemplateFixture.get(member, category));
+            var sourceCode = sourceCodeRepository.save(new SourceCode(template, "Filename 1", "Content 1", 1));
+
+            sut.createThumbnail(template, sourceCode);
+            var actual = thumbnailRepository.fetchByTemplate(template);
+
+            assertAll(
+                    () -> assertThat(actual.getId()).isEqualTo(1L),
+                    () -> assertThat(actual.getTemplate()).isEqualTo(template),
+                    () -> assertThat(actual.getSourceCode()).isEqualTo(sourceCode)
+            );
+        }
+    }
+
+    @Nested
+    @DisplayName("썸네일 조회")
+    class GetByTemplate {
+
+        @Test
+        @DisplayName("썸네일 조회 성공")
+        void getByTemplateSuccess() {
+            var member = memberRepository.save(MemberFixture.getFirstMember());
+            var category = categoryRepository.save(CategoryFixture.getFirstCategory());
+            var template = templateRepository.save(TemplateFixture.get(member, category));
+            var sourceCode = sourceCodeRepository.save(new SourceCode(template, "Filename 1", "Content 1", 1));
+            thumbnailRepository.save(new Thumbnail(template, sourceCode));
+
+            var actual = sut.getByTemplate(template);
+
+            assertAll(
+                    () -> assertThat(actual.getId()).isEqualTo(sourceCode.getId()),
+                    () -> assertThat(actual.getTemplate()).isEqualTo(template),
+                    () -> assertThat(actual.getSourceCode()).isEqualTo(sourceCode)
+            );
+        }
+
+        @Test
+        @DisplayName("썸네일 조회 실패: 해당하는 썸네일이 없는 경우")
+        void getByTemplateFailWithWrongID() {
+            var member = memberRepository.save(MemberFixture.getFirstMember());
+            var category = categoryRepository.save(CategoryFixture.getFirstCategory());
+            var template = templateRepository.save(TemplateFixture.get(member, category));
+
+            assertThatThrownBy(() -> sut.getByTemplate(template))
+                    .isInstanceOf(CodeZapException.class)
+                    .hasMessage("식별자가 " + template.getId() + "인 템플릿에 해당하는 썸네일이 없습니다.");
+        }
+    }
+
+    @Nested
+    @DisplayName("썸네일 삭제")
+    class DeleteByTemplateIDs {
+
+        @Test
+        @DisplayName("썸네일 삭제 성공: 1개의 썸네일 삭제")
+        void deleteByTemplateSuccessWithOneThumbnail() {
+            var member = memberRepository.save(MemberFixture.getFirstMember());
+            var category = categoryRepository.save(CategoryFixture.getFirstCategory());
+            var template1 = templateRepository.save(TemplateFixture.get(member, category));
+            var sourceCode1 = sourceCodeRepository.save(new SourceCode(template1, "Filename 1", "Content 1", 1));
+            var savedThumbnail1 = thumbnailRepository.save(new Thumbnail(template1, sourceCode1));
+            var template2 = templateRepository.save(TemplateFixture.get(member, category));
+            var sourceCode2 = sourceCodeRepository.save(new SourceCode(template2, "Filename 2", "Content 2", 1));
+            var savedThumbnail2 = thumbnailRepository.save(new Thumbnail(template2, sourceCode2));
+
+            sut.deleteByTemplateIds(List.of(template1.getId()));
+            var actual = thumbnailRepository.findAll();
+
+            assertThat(actual).hasSize(1)
+                    .containsExactly(savedThumbnail2)
+                    .doesNotContain(savedThumbnail1);
+        }
+
+        @Test
+        @DisplayName("썸네일 삭제 성공: 2개의 썸네일 삭제")
+        void deleteByTemplateSuccessWithTwoThumbnail() {
+            var member = memberRepository.save(MemberFixture.getFirstMember());
+            var category = categoryRepository.save(CategoryFixture.getFirstCategory());
+            var template1 = templateRepository.save(TemplateFixture.get(member, category));
+            var sourceCode1 = sourceCodeRepository.save(new SourceCode(template1, "Filename 1", "Content 1", 1));
+            var savedThumbnail1 = thumbnailRepository.save(new Thumbnail(template1, sourceCode1));
+            var template2 = templateRepository.save(TemplateFixture.get(member, category));
+            var sourceCode2 = sourceCodeRepository.save(new SourceCode(template2, "Filename 2", "Content 2", 1));
+            var savedThumbnail2 = thumbnailRepository.save(new Thumbnail(template2, sourceCode2));
+
+            sut.deleteByTemplateIds(List.of(template1.getId(), template2.getId()));
+            var actual = thumbnailRepository.findAll();
+
+            assertThat(actual).isEmpty();
+        }
+
+        @Test
+        @DisplayName("썸네일 삭제 성공: 존재하지 않는 경우")
+        void deleteByTemplateFailWithWrongID() {
+            var member = memberRepository.save(MemberFixture.getFirstMember());
+            var category = categoryRepository.save(CategoryFixture.getFirstCategory());
+            var template = templateRepository.save(TemplateFixture.get(member, category));
+            var sourceCode = sourceCodeRepository.save(new SourceCode(template, "Filename 1", "Content 1", 1));
+            var savedThumbnail = thumbnailRepository.save(new Thumbnail(template, sourceCode));
+            var nonExistentID = 100L;
+
+            sut.deleteByTemplateIds(List.of(nonExistentID));
+            var actual = thumbnailRepository.findAll();
+
+            assertThat(actual).hasSize(1)
+                    .containsExactly(savedThumbnail);
+        }
+    }
+}