From 863dd132bdbc16bdeb818490a2e119fb102e6745 Mon Sep 17 00:00:00 2001
From: Paul Mcilreavy <paul.mcilreavy@purple.telstra.com>
Date: Sat, 14 May 2022 11:29:27 +1000
Subject: [PATCH] Fix Topic validation.

---
 src/AzureEventGridSimulator/Domain/Entities/EventGridEvent.cs | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/AzureEventGridSimulator/Domain/Entities/EventGridEvent.cs b/src/AzureEventGridSimulator/Domain/Entities/EventGridEvent.cs
index a55a31e..32ab09a 100644
--- a/src/AzureEventGridSimulator/Domain/Entities/EventGridEvent.cs
+++ b/src/AzureEventGridSimulator/Domain/Entities/EventGridEvent.cs
@@ -108,7 +108,7 @@ public void Validate()
                 InvalidOperationException($"Property '{nameof(MetadataVersion)}' was found to be set to '{MetadataVersion}', but was expected to either be null or be set to 1.");
         }
 
-        if (Topic != null)
+        if (!string.IsNullOrEmpty(Topic))
         {
             throw new InvalidOperationException($"Property '{nameof(Topic)}' was found to be set to '{Topic}', but was expected to either be null/empty.");
         }