diff --git a/tests/phpunit/tests/l10n.php b/tests/phpunit/tests/l10n.php
index 3d23dd7f20d4..1c69fb4c23be 100644
--- a/tests/phpunit/tests/l10n.php
+++ b/tests/phpunit/tests/l10n.php
@@ -435,6 +435,19 @@ public function test_length_of_draft_should_be_counted_by_words() {
 
 		switch_to_locale( 'en_US' );
 
+		/*
+		 * The recent drafts list is only displayed on the Dashboard screen for users
+		 * with the 'edit_posts' capability.
+		 *
+		 * This means the current user needs to be set to Editor as a prerequisite
+		 * for the call to the wp_dashboard_recent_drafts() function.
+		 *
+		 * This allows the subsequent call to get_edit_post_link() to work as expected
+		 * and return a string instead of null, which would otherwise cause a PHP 8.1
+		 * "passing null to non-nullable" deprecation notice.
+		 */
+		wp_set_current_user( self::factory()->user->create( array( 'role' => 'editor' ) ) );
+
 		$args = array(
 			'post_content' => $this->long_text,
 			'post_excerpt' => '',
@@ -461,6 +474,19 @@ public function test_length_of_draft_should_be_counted_by_chars() {
 
 		switch_to_locale( 'ja_JP' );
 
+		/*
+		 * The recent drafts list is only displayed on the Dashboard screen for users
+		 * with the 'edit_posts' capability.
+		 *
+		 * This means the current user needs to be set to Editor as a prerequisite
+		 * for the call to the wp_dashboard_recent_drafts() function.
+		 *
+		 * This allows the subsequent call to get_edit_post_link() to work as expected
+		 * and return a string instead of null, which would otherwise cause a PHP 8.1
+		 * "passing null to non-nullable" deprecation notice.
+		 */
+		wp_set_current_user( self::factory()->user->create( array( 'role' => 'editor' ) ) );
+
 		$args = array(
 			'post_content' => $this->long_text,
 			'post_excerpt' => '',
@@ -487,6 +513,19 @@ public function test_length_of_draft_should_be_counted_by_chars_in_japanese() {
 
 		switch_to_locale( 'ja_JP' );
 
+		/*
+		 * The recent drafts list is only displayed on the Dashboard screen for users
+		 * with the 'edit_posts' capability.
+		 *
+		 * This means the current user needs to be set to Editor as a prerequisite
+		 * for the call to the wp_dashboard_recent_drafts() function.
+		 *
+		 * This allows the subsequent call to get_edit_post_link() to work as expected
+		 * and return a string instead of null, which would otherwise cause a PHP 8.1
+		 * "passing null to non-nullable" deprecation notice.
+		 */
+		wp_set_current_user( self::factory()->user->create( array( 'role' => 'editor' ) ) );
+
 		$args = array(
 			'post_content' => str_repeat( 'あ', 200 ),
 			'post_excerpt' => '',