Improve SGU logon resilience and client UX

2026-09-01 10:37:40 -06:00
parent 3d0897316d
commit da01343985
27 changed files with 869 additions and 37 deletions
@@ -0,0 +1,34 @@
+using System.Drawing;
+using Lithnet.CredentialProvider;
+using Xunit;
+
+namespace SGU.CredentialProvider.Tests;
+
+public sealed class ProviderTileIconTests
+{
+    [Fact]
+    public void ProviderPublishesASeventyTwoPixelLogoForSignInOptions()
+    {
+        SguCredentialProvider provider = new();
+
+        CredentialProviderLogoControl logo = Assert.Single(
+            provider.GetControls(UsageScenario.Logon).OfType<CredentialProviderLogoControl>());
+
+        Assert.Equal(ProviderTileIcon.Size, logo.Bitmap.Width);
+        Assert.Equal(ProviderTileIcon.Size, logo.Bitmap.Height);
+        Assert.Equal(Color.FromArgb(0, 83, 155).ToArgb(), logo.Bitmap.GetPixel(0, 0).ToArgb());
+        int lightPixels = 0;
+        for (int x = 0; x < logo.Bitmap.Width; x++)
+        {
+            for (int y = 0; y < logo.Bitmap.Height; y++)
+            {
+                if (logo.Bitmap.GetPixel(x, y).GetBrightness() > 0.7f)
+                {
+                    lightPixels++;
+                }
+            }
+        }
+
+        Assert.InRange(lightPixels, 200, 2_000);
+    }
+}