From 481fef353d63b7cb8023d09eb2d4246219bfc47b Mon Sep 17 00:00:00 2001
From: shail-mehta <shailmehta25@gmail.com>
Date: Tue, 3 Nov 2026 16:51:20 +0000
Subject: [PATCH] Tests: Add unit coverage for `comments_link_feed()`.

Cover the comments_link_feed filter arguments and escaped feed output.

See #65819.
---
 tests/phpunit/tests/feed/commentsLinkFeed.php | 32 +++++++++++++++++++
 1 file changed, 32 insertions(+)
 create mode 100644 tests/phpunit/tests/feed/commentsLinkFeed.php

diff --git a/tests/phpunit/tests/feed/commentsLinkFeed.php b/tests/phpunit/tests/feed/commentsLinkFeed.php
new file mode 100644
index 0000000000000..a17587a9cc4b2
--- /dev/null
+++ b/tests/phpunit/tests/feed/commentsLinkFeed.php
@@ -0,0 +1,32 @@
+<?php
+/**
+ * Tests for comments_link_feed().
+ *
+ * @group feed
+ *
+ * @covers ::comments_link_feed
+ */
+class Tests_Feed_CommentsLinkFeed extends WP_UnitTestCase {
+
+	/**
+	 * @ticket 65819
+	 */
+	public function test_filter_receives_comments_link_and_output_is_escaped() {
+		$post_id         = self::factory()->post->create();
+		$GLOBALS['post'] = get_post( $post_id );
+		setup_postdata( $GLOBALS['post'] );
+
+		$filter = new MockAction();
+		add_filter( 'comments_link_feed', array( $filter, 'filter_append' ) );
+
+		ob_start();
+		comments_link_feed();
+		$output = ob_get_clean();
+
+		$comments_link = get_comments_link( $post_id );
+
+		$this->assertSame( esc_url( $comments_link . '_append' ), $output );
+		$this->assertSame( 1, $filter->get_call_count() );
+		$this->assertSame( array( $comments_link ), $filter->get_args()[0] );
+	}
+}