From 5c108405816c37594886b9f5a32ebedafb36f094 Mon Sep 17 00:00:00 2001
From: Dev <dev@sharepoint-toolbox.local>
Date: Thu, 2 Apr 2026 13:49:16 +0200
Subject: [PATCH] test(02-03): add failing tests for
 SiteListService.DeriveAdminUrl
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

- Two tests for DeriveAdminUrl: standard URL and trailing-slash URL
- Tests fail (RED) — SiteListService not yet implemented
---
 .../Services/SiteListServiceTests.cs          | 21 +++++++++++++++++++
 1 file changed, 21 insertions(+)
 create mode 100644 SharepointToolbox.Tests/Services/SiteListServiceTests.cs

diff --git a/SharepointToolbox.Tests/Services/SiteListServiceTests.cs b/SharepointToolbox.Tests/Services/SiteListServiceTests.cs
new file mode 100644
index 0000000..73135d0
--- /dev/null
+++ b/SharepointToolbox.Tests/Services/SiteListServiceTests.cs
@@ -0,0 +1,21 @@
+using SharepointToolbox.Services;
+using Xunit;
+
+namespace SharepointToolbox.Tests.Services;
+
+public class SiteListServiceTests
+{
+    [Fact]
+    public void DeriveAdminUrl_WithStandardUrl_ReturnsAdminUrl()
+    {
+        var result = SiteListService.DeriveAdminUrl("https://contoso.sharepoint.com");
+        Assert.Equal("https://contoso-admin.sharepoint.com", result);
+    }
+
+    [Fact]
+    public void DeriveAdminUrl_WithTrailingSlash_ReturnsAdminUrl()
+    {
+        var result = SiteListService.DeriveAdminUrl("https://contoso.sharepoint.com/");
+        Assert.Equal("https://contoso-admin.sharepoint.com", result);
+    }
+}