From d69116b4756211594e83f2fbdb384c34dcc1c630 Mon Sep 17 00:00:00 2001
From: Nikita Tsukanov <keks9n@gmail.com>
Date: Fri, 16 Nov 2018 22:28:45 +0300
Subject: [PATCH] Check if uri scheme is registered so tests won't fall apart

---
 src/Shared/PlatformSupport/AssetLoader.cs | 11 +++++++----
 1 file changed, 7 insertions(+), 4 deletions(-)

diff --git a/src/Shared/PlatformSupport/AssetLoader.cs b/src/Shared/PlatformSupport/AssetLoader.cs
index e67dfa7f57..cea607040d 100644
--- a/src/Shared/PlatformSupport/AssetLoader.cs
+++ b/src/Shared/PlatformSupport/AssetLoader.cs
@@ -385,10 +385,13 @@ namespace Avalonia.Shared.PlatformSupport
         
         public static void RegisterResUriParsers()
         {
-            UriParser.Register(new GenericUriParser(GenericUriParserOptions.GenericAuthority |
-                                                    GenericUriParserOptions.NoUserInfo |
-                                                    GenericUriParserOptions.NoPort | GenericUriParserOptions.NoQuery |
-                                                    GenericUriParserOptions.NoFragment), "avares", -1);
+            if (!UriParser.IsKnownScheme("avares"))
+                UriParser.Register(new GenericUriParser(
+                    GenericUriParserOptions.GenericAuthority |
+                    GenericUriParserOptions.NoUserInfo |
+                    GenericUriParserOptions.NoPort |
+                    GenericUriParserOptions.NoQuery |
+                    GenericUriParserOptions.NoFragment), "avares", -1);
         }
     }
 }