From acba6d1f4a5515faf55a79f035f51d8faf89442a Mon Sep 17 00:00:00 2001
From: oleibman <10341515+oleibman@users.noreply.github.com>
Date: Tue, 16 Sep 2025 11:22:05 -0700
Subject: [PATCH] Additional Test

---
 tests/PhpSpreadsheetTests/Reader/Xls/InfoNamesTest.php | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/tests/PhpSpreadsheetTests/Reader/Xls/InfoNamesTest.php b/tests/PhpSpreadsheetTests/Reader/Xls/InfoNamesTest.php
index 98e3918f5..2d0f1e66b 100644
--- a/tests/PhpSpreadsheetTests/Reader/Xls/InfoNamesTest.php
+++ b/tests/PhpSpreadsheetTests/Reader/Xls/InfoNamesTest.php
@@ -4,6 +4,7 @@ declare(strict_types=1);
 
 namespace PhpOffice\PhpSpreadsheetTests\Reader\Xls;
 
+use PhpOffice\PhpSpreadsheet\Exception as PhpSpreadsheetException;
 use PhpOffice\PhpSpreadsheet\Reader\Xls;
 use PhpOffice\PhpSpreadsheet\Shared\CodePage;
 use PHPUnit\Framework\TestCase;
@@ -128,6 +129,14 @@ class InfoNamesTest extends TestCase
         self::assertSame($expected, $names);
     }
 
+    public function testBadCodePage(): void
+    {
+        $this->expectException(PhpSpreadsheetException::class);
+        $this->expectExceptionMessage('Unknown codepage');
+        $reader = new Xls();
+        $reader->setCodePage('XXXCP855');
+    }
+
     public function testLoadMacCentralEuropeBiff5(): void
     {
         $reader = new Xls();