test: cover English-only blog discovery

Author: lawrencecchen

web/tests/agent-page-variants.test.ts

@@ -393,6 +393,14 @@ describe("agent page variants", () => {
     expect(sitemapPaths).not.toContain("/de/docs/remote-tmux");
   });
 
+  test("limits English-only blog variants to their canonical routes", () => {
+    for (const path of ["/blog/cmux-omo", "/blog/gpl"]) {
+      expect(resolveAgentPageVariant(`${path}.md`)).not.toBeNull();
+      expect(resolveAgentPageVariant(`/ja${path}.md`)).toBeNull();
+      expect(resolveAgentPageVariant(`/de${path}.txt`)).toBeNull();
+    }
+  });
+
   test("limits en-ja docs alternate links to live localized routes", () => {
     const path = featureWorkflowDocPathForRequest("/de/docs/vault");
     expect(path).toBe("/docs/vault");

web/tests/seo.test.ts

@@ -1,6 +1,7 @@
 import { describe, expect, test } from "bun:test";
 import { NextRequest } from "next/server";
 import { comparePages } from "../app/lib/compare-pages";
+import { blogPostsForLocale } from "../app/[locale]/components/blog-posts";
 import sitemap from "../app/sitemap";
 import { legalMetadata } from "../app/[locale]/(legal)/legal-metadata";
 import middleware from "../proxy";
@@ -34,6 +35,16 @@ import { englishFallbackContentLocales } from "../i18n/locale-availability";
 import { locales } from "../i18n/routing";
 
 describe("SEO metadata helpers", () => {
+  test("omits English-only posts from localized blog navigation", () => {
+    const englishSlugs = blogPostsForLocale("en").map((post) => post.slug);
+    const japaneseSlugs = blogPostsForLocale("ja").map((post) => post.slug);
+
+    expect(englishSlugs).toContain("cmux-omo");
+    expect(englishSlugs).toContain("gpl");
+    expect(japaneseSlugs).not.toContain("cmux-omo");
+    expect(japaneseSlugs).not.toContain("gpl");
+  });
+
   test("keeps canonical URLs locale-aware", () => {
     expect(canonicalUrl("en", "/docs")).toBe("https://cmux.com/docs");
     expect(canonicalUrl("ja", "/docs")).toBe("https://cmux.com/ja/docs");