add regression test

Author: staabm

tests/PHPStan/Rules/Methods/CallMethodsRuleTest.php

@@ -3908,6 +3908,14 @@ public function testBug1501(): void
 		$this->analyse([__DIR__ . '/data/bug-1501.php'], []);
 	}
 
+	public function testBug12482(): void
+	{
+		$this->checkThisOnly = false;
+		$this->checkNullables = true;
+		$this->checkUnionTypes = true;
+		$this->analyse([__DIR__ . '/data/bug-12482.php'], []);
+	}
+
 	public function testBug7369(): void
 	{
 		$this->checkThisOnly = false;

tests/PHPStan/Rules/Methods/data/bug-12482.php

@@ -0,0 +1,48 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Bug12482;
+
+class PhpUnitDataProviderMethodOrderFixer
+{
+	/**
+	 * @param list<string> $elements
+	 * @param list<array{string, string}> $pairs
+	 */
+	protected function applyPhpUnitClassFix(array $elements, array $pairs): void
+	{
+		$providersPlaced = [];
+		$sameUsageName = false;
+		$sameProviderName = false;
+		foreach ($pairs as [$usageName, $providerName]) {
+			if (!isset($providersPlaced[$providerName])) {
+				$providersPlaced[$providerName] = true;
+
+				$elements = $this->moveMethodElement(
+					$elements,
+					$usageName === $sameUsageName
+						? $sameProviderName
+						: $usageName,
+					$providerName,
+					true
+				);
+
+				// honor multiple providers order for one test
+				$sameUsageName = $usageName;
+				$sameProviderName = $providerName;
+			}
+		}
+	}
+
+	/**
+	 * @param list<string> $elements
+	 *
+	 * @return list<string>
+	 */
+	private function moveMethodElement(array $elements, string $nameKeep, string $nameToMove, bool $after): array
+	{
+		return $elements; // do nothing here...
+	}
+}
+