comments implement

src/modules/comment/application/mappers/comment-application.mapper.spec.ts

@@ -0,0 +1,49 @@
+import { describe, expect, it } from 'vitest';
+import { Comment } from '../../domain/entities/comment.entity.js';
+import { CommentApplicationMapper } from './comment-application.mapper.js';
+import { UserDto } from '../../../user/application/dto/user.dto.js';
+
+const author: UserDto = {
+  id: 'user-1',
+  name: 'User 1',
+  email: 'user-1@example.com',
+  emailVerified: true,
+  image: null,
+  createdAt: new Date('2026-01-01T00:00:00.000Z'),
+  updatedAt: new Date('2026-01-01T00:00:00.000Z'),
+};
+
+const buildComment = (deletedAt: Date | null = null, authorId: string | null = 'user-1') =>
+  Comment.reconstitute({
+    id: 'comment-1',
+    content: 'Secret',
+    issueId: 1,
+    authorId,
+    editedAt: null,
+    deletedAt,
+    createdAt: new Date('2026-01-01T00:00:00.000Z'),
+    updatedAt: new Date('2026-01-01T00:00:00.000Z'),
+  });
+
+describe('CommentApplicationMapper', () => {
+  it('expands the author', () => {
+    const dto = CommentApplicationMapper.toDto(buildComment(), new Map([[author.id, author]]));
+
+    expect(dto.author).toEqual(author);
+    expect(dto.content).toBe('Secret');
+  });
+
+  it('hides content of a deleted comment', () => {
+    const dto = CommentApplicationMapper.toDto(buildComment(new Date()), new Map([[author.id, author]]));
+
+    expect(dto.content).toBeNull();
+    expect(dto.deletedAt).toBeInstanceOf(Date);
+  });
+
+  it('returns null author when the author account is deleted', () => {
+    const dto = CommentApplicationMapper.toDto(buildComment(null, null), new Map());
+
+    expect(dto.authorId).toBeNull();
+    expect(dto.author).toBeNull();
+  });
+});