feat: add read-only bird boundary

src/features/posts/post-service.test.ts

@@ -0,0 +1,121 @@
+import { describe, expect, it, vi } from 'vitest'
+import { type BirdReader, loadUserPage, searchPage } from './post-service'
+
+const reader = (): BirdReader => ({
+  getUserIdByUsername: vi
+    .fn()
+    .mockResolvedValue({ success: true, userId: '42' }),
+  getUserTweetsPaged: vi.fn().mockResolvedValue({
+    success: true,
+    tweets: [
+      { id: '1', text: 'hello', author: { username: 'yuta', name: 'Yuta' } },
+    ],
+    nextCursor: 'user-next',
+  }),
+  getAllSearchResults: vi.fn().mockResolvedValue({
+    success: true,
+    tweets: [],
+    nextCursor: 'search-next',
+  }),
+})
+
+describe('loadUserPage', () => {
+  it('resolves a handle and fetches exactly one page', async () => {
+    const client = reader()
+    const result = await loadUserPage(client, {
+      target: 'https://x.com/yuta',
+      cursor: 'cursor-1',
+    })
+
+    expect(client.getUserIdByUsername).toHaveBeenCalledWith('yuta')
+    expect(client.getUserTweetsPaged).toHaveBeenCalledWith('42', 20, {
+      cursor: 'cursor-1',
+      maxPages: 1,
+      pageDelayMs: 0,
+    })
+    expect(result).toMatchObject({
+      ok: true,
+      page: { nextCursor: 'user-next' },
+    })
+  })
+
+  it('returns a safe not-found error', async () => {
+    const client = reader()
+    vi.mocked(client.getUserIdByUsername).mockResolvedValue({
+      success: false,
+      error: 'User not found: private relay detail',
+    })
+
+    expect(await loadUserPage(client, { target: 'missing' })).toEqual({
+      ok: false,
+      error: {
+        code: 'user-not-found',
+        message: 'ユーザーが見つかりませんでした。',
+        retryable: false,
+      },
+    })
+  })
+})
+
+describe('searchPage', () => {
+  it('forwards Top and appends follows once', async () => {
+    const client = reader()
+    await searchPage(client, {
+      query: 'AI lang:ja',
+      product: 'Top',
+      following: true,
+      cursor: 'cursor-2',
+    })
+
+    expect(client.getAllSearchResults).toHaveBeenCalledWith(
+      'AI lang:ja filter:follows',
+      { product: 'Top', cursor: 'cursor-2', maxPages: 1 },
+    )
+  })
+
+  it('removes raw response data from posts and quoted posts', async () => {
+    const client = reader()
+    vi.mocked(client.getAllSearchResults).mockResolvedValue({
+      success: true,
+      tweets: [
+        {
+          id: '1',
+          text: 'hello',
+          author: { username: 'yuta', name: 'Yuta' },
+          quotedTweet: {
+            id: '2',
+            text: 'quoted',
+            author: { username: 'bird', name: 'Bird' },
+            _raw: { rest_id: 'private-quoted-detail' },
+          },
+          _raw: { rest_id: 'private-detail' },
+        },
+      ],
+    })
+
+    const result = await searchPage(client, {
+      query: 'AI',
+      product: 'Latest',
+      following: false,
+    })
+
+    expect(result).toEqual({
+      ok: true,
+      page: {
+        nextCursor: undefined,
+        tweets: [
+          {
+            id: '1',
+            text: 'hello',
+            author: { username: 'yuta', name: 'Yuta' },
+            quotedTweet: {
+              id: '2',
+              text: 'quoted',
+              author: { username: 'bird', name: 'Bird' },
+            },
+          },
+        ],
+      },
+    })
+  })
+})