From 686f595c47e31b3494f5b49ddda14ac7f9e1d653 Mon Sep 17 00:00:00 2001
From: Shakker <shakkerdroid@gmail.com>
Date: Fri, 8 May 2026 17:16:29 +0100
Subject: [PATCH] test: tighten external content marker assertion

---
 src/security/external-content.test.ts | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/src/security/external-content.test.ts b/src/security/external-content.test.ts
index b7239835b3b..8d60f0e5f51 100644
--- a/src/security/external-content.test.ts
+++ b/src/security/external-content.test.ts
@@ -496,8 +496,10 @@ describe("external-content security", () => {
 
       // The malicious tags are contained within the safe boundaries
       const startMatch = result.match(/<<<EXTERNAL_UNTRUSTED_CONTENT id="[a-f0-9]{16}">>>/);
-      expect(startMatch).not.toBeNull();
-      expect(result.indexOf(startMatch![0])).toBeLessThan(result.indexOf("</user>"));
+      if (startMatch === null) {
+        throw new Error("Expected external content start marker");
+      }
+      expect(result.indexOf(startMatch[0])).toBeLessThan(result.indexOf("</user>"));
     });
   });
 });