From 306ac0e21a4d739cac115acd621f23d3dfad8194 Mon Sep 17 00:00:00 2001
From: Steven Kirk <grokys@gmail.com>
Date: Sat, 3 Dec 2022 23:15:00 +0100
Subject: [PATCH] Throw an exception on unit test assertion fail.

---
 tests/Avalonia.UnitTests/ModuleInitializer.cs | 28 +++++++++++++++++++
 1 file changed, 28 insertions(+)
 create mode 100644 tests/Avalonia.UnitTests/ModuleInitializer.cs

diff --git a/tests/Avalonia.UnitTests/ModuleInitializer.cs b/tests/Avalonia.UnitTests/ModuleInitializer.cs
new file mode 100644
index 0000000000..8e9386afa0
--- /dev/null
+++ b/tests/Avalonia.UnitTests/ModuleInitializer.cs
@@ -0,0 +1,28 @@
+using System;
+using System.Diagnostics;
+using System.Runtime.CompilerServices;
+
+namespace Avalonia.Base.UnitTests
+{
+    internal static class ModuleInitializer
+    {
+        [ModuleInitializer]
+        internal static void TestInit()
+        {
+            Trace.Listeners.Insert(0, new ThrowListener());
+        }
+
+        private class ThrowListener : TextWriterTraceListener
+        {
+            public override void Fail(string message)
+            {
+                throw new Exception("Assertion Failed. " + message);
+            }
+
+            public override void Fail(string message, string detailMessage)
+            {
+                throw new Exception("Assertion Failed. " + message + detailMessage);
+            }
+        }
+    }
+}