From 13352b367ce9f678f30b63da3781293808717108 Mon Sep 17 00:00:00 2001
From: Oskar Stark <oskarstark@googlemail.com>
Date: Mon, 8 Sep 2025 13:55:02 +0200
Subject: [PATCH] [Store] Add withContent validation test case

Add test case to verify that TextDocument.withContent() properly validates
the new content parameter and throws InvalidArgumentException when given
empty or whitespace-only content.
---
 src/store/tests/Document/TextDocumentTest.php | 11 +++++++++++
 1 file changed, 11 insertions(+)

diff --git a/src/store/tests/Document/TextDocumentTest.php b/src/store/tests/Document/TextDocumentTest.php
index 42aff7902..eaa3887d3 100644
--- a/src/store/tests/Document/TextDocumentTest.php
+++ b/src/store/tests/Document/TextDocumentTest.php
@@ -265,4 +265,15 @@ public function testWithContent()
         $this->assertSame($metadata, $updatedDocument->metadata);
         $this->assertSame($originalContent, $originalDocument->content);
     }
+
+    #[TestDox('withContent validates new content')]
+    public function testWithContentValidatesContent()
+    {
+        $document = new TextDocument(Uuid::v4(), 'Valid content');
+
+        $this->expectException(InvalidArgumentException::class);
+        $this->expectExceptionMessage('The content shall not be an empty string.');
+
+        $document->withContent('   ');
+    }
 }