chore: Add basic test for parseRssItems function

Introduces an initial test for the parseRssItems function, verifying its ability to parse a simple RSS feed and extract title, description, and link fields.

Author: rohit1901

lib/__tests__/app.test.ts

@@ -1 +1,35 @@
-// TODO: Add tests
+// TODO: add better and more comprehensive tests for parseRssItems
+import { parseRssItems } from "../index";
+
+describe("parseRssItems", () => {
+  it("should parse a simple RSS feed", () => {
+    const xml = `
+      <rss>
+        <channel>
+          <item>
+            <title>Test Title</title>
+            <description>Test Description</description>
+            <link>https://example.com</link>
+          </item>
+        </channel>
+      </rss>
+    `;
+
+    const result = parseRssItems(xml, {
+      itemSelector: "channel > item",
+      selectors: {
+        title: "title",
+        description: "description",
+        link: "link",
+      },
+    });
+
+    expect(result).toEqual([
+      {
+        title: "Test Title",
+        description: "Test Description",
+        link: "https://example.com",
+      },
+    ]);
+  });
+});