From d66f71e7ab03d6674cf67a839b5b744c0696ba06 Mon Sep 17 00:00:00 2001
From: Paul Bearne <pbearne@gmail.com>
Date: Thu, 26 Oct 2023 16:08:31 -0400
Subject: [PATCH 1/4] test for wp_cache_set_last_changed

---
 .../tests/functions/wpCacheSetLastChanged.php | 38 +++++++++++++++++++
 1 file changed, 38 insertions(+)
 create mode 100644 tests/phpunit/tests/functions/wpCacheSetLastChanged.php

diff --git a/tests/phpunit/tests/functions/wpCacheSetLastChanged.php b/tests/phpunit/tests/functions/wpCacheSetLastChanged.php
new file mode 100644
index 0000000000000..15ad90b4a0d82
--- /dev/null
+++ b/tests/phpunit/tests/functions/wpCacheSetLastChanged.php
@@ -0,0 +1,38 @@
+<?php
+/**
+ * Tests for the wp_cache_set_last_changed function.
+ *
+ * @group functions.php
+ *
+ * @covers ::wp_cache_set_last_changed
+ */#
+class Tests_functions_wpCacheSetLastChanged extends WP_UnitTestCase {
+
+	/**
+	 * check the cache_set_last_changed is set.
+	 *
+	 * @ticket 59737
+	 */
+	public function test_wp_cache_set_last_changed() {
+		$group = 'group_name';
+
+		$this->assertSame( wp_cache_set_last_changed( $group ), wp_cache_get( 'last_changed', $group ) );
+	}
+
+	/**
+	 * Check the action is called.
+	 *
+	 * @ticket 59737
+	 */
+	public function test_wp_cache_set_last_changed_action_is_called() {
+
+		add_action(
+			'wp_cache_set_last_changed',
+			function ( $group ) {
+				$this->assertSame( 'group_name', $group );
+			}
+		);
+
+		wp_cache_set_last_changed( 'group_name' );
+	}
+}

From 9f51e9d5bbf53ec361f321507feb1c53ffd1580b Mon Sep 17 00:00:00 2001
From: Paul Bearne <pbearne@gmail.com>
Date: Fri, 3 Nov 2023 16:19:58 -0400
Subject: [PATCH 2/4] swaped to using mack for action test

---
 .../phpunit/tests/functions/wpCacheSetLastChanged.php | 11 ++++-------
 1 file changed, 4 insertions(+), 7 deletions(-)

diff --git a/tests/phpunit/tests/functions/wpCacheSetLastChanged.php b/tests/phpunit/tests/functions/wpCacheSetLastChanged.php
index 15ad90b4a0d82..c69c903fb68a0 100644
--- a/tests/phpunit/tests/functions/wpCacheSetLastChanged.php
+++ b/tests/phpunit/tests/functions/wpCacheSetLastChanged.php
@@ -25,14 +25,11 @@ public function test_wp_cache_set_last_changed() {
 	 * @ticket 59737
 	 */
 	public function test_wp_cache_set_last_changed_action_is_called() {
-
-		add_action(
-			'wp_cache_set_last_changed',
-			function ( $group ) {
-				$this->assertSame( 'group_name', $group );
-			}
-		);
+		$a1 = new MockAction();
+		add_action( 'wp_cache_set_last_changed', array( $a1, 'action' ) );
 
 		wp_cache_set_last_changed( 'group_name' );
+
+		$this->assertSame( 1, $a1->get_call_count() );
 	}
 }

From ce95026cb036eecca2ceff1c2ad62a7308c707c4 Mon Sep 17 00:00:00 2001
From: Peter Wilson <519727+peterwilsoncc@users.noreply.github.com>
Date: Sat, 4 Nov 2023 08:53:47 +1100
Subject: [PATCH 3/4] Rename group.

---
 tests/phpunit/tests/functions/wpCacheSetLastChanged.php | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/tests/phpunit/tests/functions/wpCacheSetLastChanged.php b/tests/phpunit/tests/functions/wpCacheSetLastChanged.php
index c69c903fb68a0..d8c3208008a8b 100644
--- a/tests/phpunit/tests/functions/wpCacheSetLastChanged.php
+++ b/tests/phpunit/tests/functions/wpCacheSetLastChanged.php
@@ -2,7 +2,7 @@
 /**
  * Tests for the wp_cache_set_last_changed function.
  *
- * @group functions.php
+ * @group functions
  *
  * @covers ::wp_cache_set_last_changed
  */#

From f99d077392cbf48a69bf1e4cab798e15500f548c Mon Sep 17 00:00:00 2001
From: Peter Wilson <519727+peterwilsoncc@users.noreply.github.com>
Date: Sat, 4 Nov 2023 09:57:54 +1100
Subject: [PATCH 4/4] Apply suggestions from code review

---
 tests/phpunit/tests/functions/wpCacheSetLastChanged.php | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/tests/phpunit/tests/functions/wpCacheSetLastChanged.php b/tests/phpunit/tests/functions/wpCacheSetLastChanged.php
index d8c3208008a8b..9394801c9600f 100644
--- a/tests/phpunit/tests/functions/wpCacheSetLastChanged.php
+++ b/tests/phpunit/tests/functions/wpCacheSetLastChanged.php
@@ -1,15 +1,15 @@
 <?php
 /**
- * Tests for the wp_cache_set_last_changed function.
+ * Tests for the wp_cache_set_last_changed() function.
  *
  * @group functions
  *
  * @covers ::wp_cache_set_last_changed
- */#
+ */
 class Tests_functions_wpCacheSetLastChanged extends WP_UnitTestCase {
 
 	/**
-	 * check the cache_set_last_changed is set.
+	 * Check the cache key last_changed is set for the specified group.
 	 *
 	 * @ticket 59737
 	 */