chore: add more test prepare for stable

deno.json

@@ -1,6 +1,6 @@
 {
   "name": "@steno/plugin-seo",
-  "version": "0.7.3",
+  "version": "1.0.0",
   "exports": "./mod.ts",
   "imports": {
     "steno": "jsr:@steno/steno@^0.12.0",

test.ts

@@ -111,6 +111,132 @@ Deno.test({
   },
 });
 
+Deno.test({
+  name:
+    "seo: includes root/index pages in the sitemap but excludes them from RSS/Atom, and sorts by date descending",
+  fn: async () => {
+    const plugin = seoPlugin({ siteUrl: "https://myblog.com/" });
+
+    const writtenFiles: Record<string, string> = {};
+    const originalWriteTextFile = Deno.writeTextFile;
+
+    Deno.writeTextFile = (
+      path: string | URL,
+      data: string | ReadableStream<string>,
+    ): Promise<void> => {
+      writtenFiles[String(path)] = typeof data === "string" ? data : "[Stream]";
+      return Promise.resolve();
+    };
+
+    try {
+      const mockConfig = {
+        output: "dist",
+        title: "Test Blog",
+        description: "Test description",
+        author: "Tester",
+        pages: [
+          {
+            slug: "",
+            title: "Home",
+            description: "Homepage",
+            date: "2026-01-01T00:00:00Z",
+          },
+          {
+            slug: "index.html",
+            title: "Index",
+            description: "Index page",
+            date: "2026-01-02T00:00:00Z",
+          },
+          {
+            slug: "posts/older-post",
+            title: "Older Post",
+            description: "An older post",
+            date: "2026-01-01T00:00:00Z",
+          },
+          {
+            slug: "posts/newer-post",
+            title: "Newer Post",
+            description: "A newer post",
+            date: "2026-02-01T00:00:00Z",
+          },
+        ],
+      };
+
+      await plugin.afterBuild!(mockConfig);
+
+      const sitemap = writtenFiles["dist/sitemap.xml"];
+      const rss = writtenFiles["dist/feed.xml"];
+      const atom = writtenFiles["dist/atom.xml"];
+
+      // Root and index.html pages appear in the sitemap...
+      assertStringIncludes(sitemap, "<loc>https://myblog.com/</loc>");
+      assertStringIncludes(sitemap, "<loc>https://myblog.com/index.html</loc>");
+
+      // ...but are excluded from RSS/Atom item lists.
+      assert(
+        !rss.includes("<title>Home</title>") &&
+          !rss.includes("<title>Index</title>"),
+        "root/index pages should not appear as RSS items",
+      );
+      assert(
+        !atom.includes("<title>Home</title>") &&
+          !atom.includes("<title>Index</title>"),
+        "root/index pages should not appear as Atom items",
+      );
+
+      // Non-root pages are included, ordered newest-first.
+      const rssNewerIdx = rss.indexOf("Newer Post");
+      const rssOlderIdx = rss.indexOf("Older Post");
+      assert(rssNewerIdx !== -1 && rssOlderIdx !== -1);
+      assert(
+        rssNewerIdx < rssOlderIdx,
+        "expected newer post to appear before older post in RSS feed",
+      );
+    } finally {
+      Deno.writeTextFile = originalWriteTextFile;
+    }
+  },
+});
+
+Deno.test({
+  name: "seo: defaults pages to [] and output to 'dist' when omitted",
+  fn: async () => {
+    const plugin = seoPlugin({ siteUrl: "https://myblog.com/" });
+
+    const writtenFiles: Record<string, string> = {};
+    const originalWriteTextFile = Deno.writeTextFile;
+
+    Deno.writeTextFile = (
+      path: string | URL,
+      data: string | ReadableStream<string>,
+    ): Promise<void> => {
+      writtenFiles[String(path)] = typeof data === "string" ? data : "[Stream]";
+      return Promise.resolve();
+    };
+
+    try {
+      // Neither `pages` nor `output` provided.
+      const mockConfig = {
+        title: "Test Blog",
+        description: "Test description",
+        author: "Tester",
+      };
+
+      await plugin.afterBuild!(mockConfig);
+
+      assert(writtenFiles["dist/sitemap.xml"] !== undefined);
+      assert(writtenFiles["dist/feed.xml"] !== undefined);
+      assert(writtenFiles["dist/atom.xml"] !== undefined);
+      assertStringIncludes(
+        writtenFiles["dist/sitemap.xml"],
+        '<urlset xmlns="http://www.sitemaps.org/schemas/sitemap/0.9">\n</urlset>',
+      );
+    } finally {
+      Deno.writeTextFile = originalWriteTextFile;
+    }
+  },
+});
+
 Deno.test({
   name: "seo: generates a default robots.txt allowing all crawling",
   fn: async () => {