From be0f73d1bcbfbda665631d43132c009d5a711c41 Mon Sep 17 00:00:00 2001
From: Codex Night Worker <codex-night@localhost>
Date: Fri, 13 Nov 2026 12:39:11 +0900
Subject: [PATCH] AI: address review on PR #460

---
 frontend/server.ssr.test.mjs | 21 +++++++++++++++++++++
 1 file changed, 21 insertions(+)

diff --git a/frontend/server.ssr.test.mjs b/frontend/server.ssr.test.mjs
index cae7986..530949c 100644
--- a/frontend/server.ssr.test.mjs
+++ b/frontend/server.ssr.test.mjs
@@ -2,6 +2,7 @@ import assert from 'node:assert/strict'
 import { createServer } from 'node:http'
 import { spawn } from 'node:child_process'
 import { after, before, test } from 'node:test'
+import { JSDOM } from 'jsdom'
 import { createServer as createViteServer } from 'vite'
 
 import { render } from './dist/server/entry-server.js'
@@ -402,6 +403,26 @@ test ('every canonical screen route returns page HTML without JavaScript', async
   }
 })
 
+test ('SSR HTML head includes reciprocal hreflang links with query parameters', async () => {
+  for (const locale of ['ja', 'ain-Kana']) {
+    const response = await fetch (`${httpOrigin}/${locale}/posts?page=2&limit=50`)
+    assert.equal (response.status, 200)
+    const dom = new JSDOM (await response.text ())
+    try
+    {
+      const links = [...dom.window.document.head.querySelectorAll ('link[rel="alternate"]')]
+      assert.deepEqual (links.map (link => ({
+        locale: link.getAttribute ('hreflang'), href: link.getAttribute ('href') })), [
+        { locale: 'ja', href: `${origin}/ja/posts?page=2&limit=50` },
+        { locale: 'ain-Kana', href: `${origin}/ain-Kana/posts?page=2&limit=50` }])
+    }
+    finally
+    {
+      dom.window.close ()
+    }
+  }
+})
+
 test ('YouTube posts return HTTP 200 with the embed rendered by SSR', async t => {
   for (const locale of ['ja', 'ain-Kana']) {
     await t.test (locale, async () => {