comments implement

src/modules/comment/domain/entities/comment.entity.spec.ts

@@ -0,0 +1,76 @@
+import { describe, expect, it } from 'vitest';
+import { Comment } from './comment.entity.js';
+import { CommentForbiddenException } from '../exceptions/comment-forbidden.exception.js';
+
+const buildComment = (overrides: Partial<{ authorId: string | null; deletedAt: Date | null }> = {}) =>
+  Comment.reconstitute({
+    id: 'comment-1',
+    content: 'Original',
+    issueId: 1,
+    authorId: overrides.authorId === undefined ? 'user-1' : overrides.authorId,
+    editedAt: null,
+    deletedAt: overrides.deletedAt ?? null,
+    createdAt: new Date('2026-01-01T00:00:00.000Z'),
+    updatedAt: new Date('2026-01-01T00:00:00.000Z'),
+  });
+
+describe('Comment', () => {
+  describe('create', () => {
+    it('creates a new comment without id and edit/delete marks', () => {
+      const comment = Comment.create({ issueId: 1, authorId: 'user-1', content: ' Hello ' });
+
+      expect(comment.id).toBeNull();
+      expect(comment.content).toBe('Hello');
+      expect(comment.editedAt).toBeNull();
+      expect(comment.isDeleted).toBe(false);
+    });
+
+    it('rejects empty content', () => {
+      expect(() => Comment.create({ issueId: 1, authorId: 'user-1', content: '' })).toThrow();
+    });
+  });
+
+  describe('edit', () => {
+    it('changes content and sets editedAt', () => {
+      const comment = buildComment();
+
+      expect(comment.edit('Changed', 'user-1')).toBe(true);
+      expect(comment.content).toBe('Changed');
+      expect(comment.editedAt).toBeInstanceOf(Date);
+    });
+
+    it('is a no-op when content is the same', () => {
+      const comment = buildComment();
+
+      expect(comment.edit(' Original ', 'user-1')).toBe(false);
+      expect(comment.editedAt).toBeNull();
+    });
+
+    it('forbids editing by someone other than the author', () => {
+      expect(() => buildComment().edit('Changed', 'user-2')).toThrow(CommentForbiddenException);
+    });
+
+    it('forbids editing when the author account is deleted', () => {
+      expect(() => buildComment({ authorId: null }).edit('Changed', 'user-1')).toThrow(CommentForbiddenException);
+    });
+
+    it('forbids editing a deleted comment', () => {
+      expect(() => buildComment({ deletedAt: new Date() }).edit('Changed', 'user-1')).toThrow();
+    });
+  });
+
+  describe('delete', () => {
+    it('soft-deletes the comment', () => {
+      const comment = buildComment();
+
+      comment.delete('user-1');
+
+      expect(comment.isDeleted).toBe(true);
+      expect(comment.deletedAt).toBeInstanceOf(Date);
+    });
+
+    it('forbids deletion by someone other than the author', () => {
+      expect(() => buildComment().delete('user-2')).toThrow(CommentForbiddenException);
+    });
+  });
+});