chore: refactorings and code sharing

tests/engine/GenerationPostSnapshotService.test.ts

@@ -0,0 +1,78 @@
+import { describe, expect, it } from 'vitest';
+import type { PostData } from '../../src/main/engine/PostEngine';
+import {
+  loadPublishedGenerationSets,
+  type GenerationSnapshotPostEngine,
+} from '../../src/main/engine/GenerationPostSnapshotService';
+
+function makePost(overrides: Partial<PostData> = {}): PostData {
+  const createdAt = overrides.createdAt ?? new Date('2025-01-02T10:00:00.000Z');
+  const updatedAt = overrides.updatedAt ?? createdAt;
+  const title = overrides.title ?? 'Title';
+
+  return {
+    id: overrides.id ?? 'post-1',
+    projectId: overrides.projectId ?? 'default',
+    title,
+    slug: overrides.slug ?? 'title',
+    excerpt: overrides.excerpt,
+    content: overrides.content ?? `# ${title}\n\nBody`,
+    status: overrides.status ?? 'published',
+    author: overrides.author,
+    createdAt,
+    updatedAt,
+    publishedAt: overrides.publishedAt,
+    tags: overrides.tags ?? [],
+    categories: overrides.categories ?? [],
+  };
+}
+
+function makeEngine(posts: PostData[], snapshotsById: Record<string, PostData | null> = {}): GenerationSnapshotPostEngine {
+  return {
+    async getPublishedVersion(postId: string): Promise<PostData | null> {
+      return snapshotsById[postId] ?? null;
+    },
+    async getPostsFiltered(filter: { status?: 'draft' | 'published' | 'archived'; excludeCategories?: string[] }): Promise<PostData[]> {
+      return posts
+        .filter((post) => {
+          if (filter.status && post.status !== filter.status) {
+            return false;
+          }
+
+          if (filter.excludeCategories && filter.excludeCategories.length > 0) {
+            const categories = post.categories || [];
+            if (categories.some((category) => filter.excludeCategories?.includes(category))) {
+              return false;
+            }
+          }
+
+          return true;
+        })
+        .sort((a, b) => b.createdAt.getTime() - a.createdAt.getTime());
+    },
+  };
+}
+
+describe('GenerationPostSnapshotService', () => {
+  it('loads published and list snapshots merged from published rows and draft published snapshots', async () => {
+    const published = makePost({ id: 'pub-1', status: 'published', categories: ['news'] });
+    const draft = makePost({ id: 'draft-1', status: 'draft', categories: ['news'] });
+    const draftSnapshot = makePost({ id: 'draft-1', status: 'published', categories: ['news'] });
+
+    const result = await loadPublishedGenerationSets(makeEngine([published, draft], { 'draft-1': draftSnapshot }), []);
+
+    expect(result.publishedPosts).toHaveLength(2);
+    expect(result.publishedListPosts).toHaveLength(2);
+    expect(result.publishedPosts.map((post) => post.id).sort()).toEqual(['draft-1', 'pub-1']);
+  });
+
+  it('excludes list-disabled categories only from list snapshot set', async () => {
+    const article = makePost({ id: 'article', status: 'published', categories: ['article'] });
+    const page = makePost({ id: 'page', status: 'published', categories: ['page'] });
+
+    const result = await loadPublishedGenerationSets(makeEngine([article, page]), ['page']);
+
+    expect(result.publishedPosts.map((post) => post.id).sort()).toEqual(['article', 'page']);
+    expect(result.publishedListPosts.map((post) => post.id)).toEqual(['article']);
+  });
+});