Add tests for None case and closure formatting, implement lazy-loaded actions field

Co-authored-by: swissspidy <841956+swissspidy@users.noreply.github.com>

Author: Copilot

features/cron-event.feature

@@ -165,6 +165,9 @@ Feature: Manage WP Cron events
       <?php
       add_action( 'wp_cli_test_hook', 'wp_cli_test_function' );
       add_action( 'wp_cli_test_hook', array( 'MyTestClass', 'my_method' ) );
+      add_action( 'wp_cli_test_hook_closure', function() {
+        // Test closure
+      } );
 
       function wp_cli_test_function() {
         // Test function
@@ -202,3 +205,27 @@ Feature: Manage WP Cron events
       """
       wp_cli_test_function
       """
+
+    When I run `wp cron event schedule wp_cli_test_hook_closure now`
+    Then STDOUT should contain:
+      """
+      Success: Scheduled event with hook 'wp_cli_test_hook_closure'
+      """
+
+    When I run `wp cron event list --hook=wp_cli_test_hook_closure --fields=hook,actions --format=csv`
+    Then STDOUT should contain:
+      """
+      Closure
+      """
+
+    When I run `wp cron event schedule wp_cli_test_hook_no_actions now`
+    Then STDOUT should contain:
+      """
+      Success: Scheduled event with hook 'wp_cli_test_hook_no_actions'
+      """
+
+    When I run `wp cron event list --hook=wp_cli_test_hook_no_actions --fields=hook,actions --format=csv`
+    Then STDOUT should contain:
+      """
+      None
+      """

src/Cron_Event_Command.php

@@ -114,6 +114,13 @@ public function list_( $args, $assoc_args ) {
 			$events = array();
 		}
 
+		// Populate actions field only if requested
+		if ( ! empty( $formatter->fields ) && in_array( 'actions', $formatter->fields, true ) ) {
+			foreach ( $events as $event ) {
+				$event->actions = self::get_hook_actions( $event->hook );
+			}
+		}
+
 		foreach ( $events as $key => $event ) {
 			foreach ( $this->fields as $field ) {
 				if ( ! empty( $assoc_args[ $field ] ) && $event->{$field} !== $assoc_args[ $field ] ) {