Move welcome logo to lower right

tests/WelcomeWallpaper.Tests.ps1

@@ -123,20 +123,30 @@ Describe 'Welcome wallpaper with AD metadata' {
         $result.LocationText | Should Be "Acceso al Aula Flexible`ndel Centro de Experiencia Digital."
     }
 
-    It 'ships the logo inside the base image instead of compositing it at runtime' {
+    It 'ships the logo at the lower right of the base image instead of compositing it at runtime' {
         $source | Should Not Match 'lasalle-logo-blanco|DrawImage.*logo|composite.*logo'
         $bitmap = [Drawing.Bitmap]::FromFile((Join-Path $repositoryRoot 'assets\branding\darkblue.jpg'))
         try {
-            $whitePixels = 0
+            $upperLeftWhitePixels = 0
             for ($x = 60; $x -lt 390; $x += 2) {
                 for ($y = 45; $y -lt 175; $y += 2) {
                     $pixel = $bitmap.GetPixel($x, $y)
                     if ($pixel.R -gt 220 -and $pixel.G -gt 220 -and $pixel.B -gt 220) {
-                        $whitePixels++
+                        $upperLeftWhitePixels++
                     }
                 }
             }
-            ($whitePixels -gt 250) | Should Be $true
+            $lowerRightWhitePixels = 0
+            for ($x = 1225; $x -lt 1525; $x += 2) {
+                for ($y = 805; $y -lt 930; $y += 2) {
+                    $pixel = $bitmap.GetPixel($x, $y)
+                    if ($pixel.R -gt 220 -and $pixel.G -gt 220 -and $pixel.B -gt 220) {
+                        $lowerRightWhitePixels++
+                    }
+                }
+            }
+            ($upperLeftWhitePixels -lt 25) | Should Be $true
+            ($lowerRightWhitePixels -gt 250) | Should Be $true
         }
         finally {
             $bitmap.Dispose()