Add bug-14596 tests to CallMethodsRuleTest and CallStaticMethodsRuleTest

Assert that positional arguments after named arguments on method calls
and static method calls report the expected error instead of crashing.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

Author: phpstan-bot

tests/PHPStan/Rules/Methods/CallMethodsRuleTest.php

@@ -4078,4 +4078,17 @@ public function testBug8048(): void
 		$this->analyse([__DIR__ . '/data/bug-8048.php'], []);
 	}
 
+	public function testBug14596(): void
+	{
+		$this->checkThisOnly = false;
+		$this->checkNullables = true;
+		$this->checkUnionTypes = true;
+		$this->analyse([__DIR__ . '/data/bug-14596.php'], [
+			[
+				'Named argument cannot be followed by a positional argument.',
+				11,
+			],
+		]);
+	}
+
 }

tests/PHPStan/Rules/Methods/CallStaticMethodsRuleTest.php

@@ -1021,4 +1021,15 @@ public function testBug11894(): void
 		$this->analyse([__DIR__ . '/data/bug-11894.php'], []);
 	}
 
+	public function testBug14596(): void
+	{
+		$this->checkThisOnly = false;
+		$this->analyse([__DIR__ . '/data/bug-14596.php'], [
+			[
+				'Named argument cannot be followed by a positional argument.',
+				12,
+			],
+		]);
+	}
+
 }

tests/PHPStan/Rules/Methods/data/bug-14596.php

@@ -0,0 +1,13 @@
+<?php
+
+namespace Bug14596Methods;
+
+class Foo {
+	public function bar(int $a, int $b, int $c, string ...$rest): void {}
+	public static function baz(int $a, int $b, int $c, string ...$rest): void {}
+}
+
+function (Foo $obj): void {
+	$obj->bar(1, 2, 3, d: 'foo', 5);
+	Foo::baz(1, 2, 3, d: 'foo', 5);
+};