WP/CronInterval: make callback function name lookup case-insensitive

The sniff was incorrectly treating callback function names as case-sensitive when trying to locate the callback function definition. This led to false positives when the callback reference case did not match the function declaration case.

The fix ensures callback names are compared case-insensitively using `strcasecmp()` when searching for function declarations in the code.

Author: rodrigoprimo

WordPress/Sniffs/WP/CronIntervalSniff.php

@@ -291,7 +291,7 @@ private function find_function_by_name( $functionName ) {
 		for ( $ptr = 0; $ptr < $this->phpcsFile->numTokens; $ptr++ ) {
 			if ( \T_FUNCTION === $this->tokens[ $ptr ]['code'] ) {
 				$foundName = FunctionDeclarations::getName( $this->phpcsFile, $ptr );
-				if ( $foundName === $functionName ) {
+				if ( strcasecmp( $foundName, $functionName ) === 0 ) {
 					$functionPtr = $ptr;
 					break;
 				} elseif ( isset( $this->tokens[ $ptr ]['scope_closer'] ) ) {

WordPress/Tests/WP/CronIntervalUnitTest.inc

@@ -164,7 +164,7 @@ add_filter( 'cron_schedules', function ( $schedules ) {
 // Correctly handle fully qualified WP time constants.
 class FQNConstants {
 	public function add_schedules() {
-		add_filter( 'cron_schedules', array( $this, 'add_weekly_schedule' ) ); // Ok: > 15 min.
+		add_filter( 'cron_schedules', array( $this, 'ADD_WEEKLY_SCHEDULE' ) ); // Ok: > 15 min.
 		\add_filter( 'cron_schedules', array( $this, 'add_eight_minute_schedule' ) ); // Warning: 8 min.
 		ADD_FILTER( 'cron_schedules', array( $this, 'add_hundred_minute_schedule' ) ); // Warning: time undetermined.
 		\Add_Filter( 'cron_schedules', array( $this, 'sneaky_fake_wp_constant_schedule' ) ); // Warning: time undetermined.
@@ -284,7 +284,7 @@ class FirstClassCallables {
 	public function add_schedules() {
 		add_filter( 'cron_schedules', $this->cron_weekly_schedule(...) ); // Ok: > 15 min.
 		add_filter( 'cron_schedules', $this->cron_eight_minute_schedule(...) ); // Warning: 8 min.
-		add_filter( 'cron_schedules', self::cron_weekly_schedule(...) ); // Ok: > 15 min.
+		add_filter( 'cron_schedules', self::Cron_Weekly_Schedule(...) ); // Ok: > 15 min.
 		add_filter( 'cron_schedules', static::cron_eight_minute_schedule(...) ); // Warning: 8 min.
 		add_filter( 'cron_schedules', [$this, 'cron_weekly_schedule'](...) ); // Ok: > 15 min.
 		add_filter( 'cron_schedules', array($this, 'cron_eight_minute_schedule')(...) ); // Warning: 8 min.
@@ -328,6 +328,7 @@ function first_class_six_min_schedule( $schedules ) {
 add_filter( 'cron_schedules', first_class_six_min_schedule(...)); // Warning: 6 min.
 add_filter( 'cron_schedules', 'first_class_six_min_schedule'(...)); // Warning: 6 min.
 add_filter( 'cron_schedules', \first_class_six_min_schedule(...)); // Warning: 6 min.
+add_filter( 'cron_schedules', \FIRST_CLASS_SIX_MIN_SCHEDULE(...)); // Warning: 6 min.
 add_filter( 'cron_schedules', namespace\first_class_six_min_schedule(...)); // Warning: 6 min.
 
 /*