feat: load tweet conversations

src/features/posts/inputs.test.ts

@@ -1,5 +1,51 @@
 import { describe, expect, it } from 'vitest'
-import { buildSearchQuery, normalizeUserTarget } from './inputs'
+import {
+  buildSearchQuery,
+  normalizeTweetId,
+  normalizeUserTarget,
+  threadPageInputSchema,
+} from './inputs'
+
+describe('threadPageInputSchema', () => {
+  it('accepts initial and complete continuation requests', () => {
+    expect(threadPageInputSchema.parse({ tweetId: '123' })).toEqual({
+      tweetId: '123',
+    })
+    expect(
+      threadPageInputSchema.parse({
+        tweetId: '123',
+        conversationId: '100',
+        cursor: 'thread-next',
+      }),
+    ).toEqual({
+      tweetId: '123',
+      conversationId: '100',
+      cursor: 'thread-next',
+    })
+  })
+
+  it.each([
+    { tweetId: '' },
+    { tweetId: 'abc' },
+    { tweetId: '123', cursor: 'thread-next' },
+    { tweetId: '123', conversationId: '100' },
+    { tweetId: '123', conversationId: 'root', cursor: 'thread-next' },
+  ])('rejects an invalid thread request %#', (input) => {
+    expect(() => threadPageInputSchema.parse(input)).toThrow()
+  })
+})
+
+describe('normalizeTweetId', () => {
+  it('keeps a decimal post ID', () => {
+    expect(normalizeTweetId(' 1234567890 ')).toBe('1234567890')
+  })
+
+  it.each(['', '123/status', '@123', '１２３'])('rejects %s', (input) => {
+    expect(() => normalizeTweetId(input)).toThrow(
+      '投稿 ID を確認してください。',
+    )
+  })
+})
 
 describe('normalizeUserTarget', () => {
   it.each([