Rework asynchronous asset registry

.editorconfig

@@ -254,6 +254,8 @@ csharp_style_prefer_extended_property_pattern = true:suggestion
 csharp_style_var_for_built_in_types = false:silent
 csharp_style_var_when_type_is_apparent = false:silent
 csharp_style_var_elsewhere = false:silent
+dotnet_diagnostic.IDE0008.severity = none
+dotnet_diagnostic.IDE0011.severity = none
 dotnet_diagnostic.IDE0051.severity = warning
 dotnet_diagnostic.IDE0052.severity = warning
 dotnet_diagnostic.IDE0064.severity = warning
@@ -275,6 +277,9 @@ dotnet_diagnostic.IDE0004.severity = warning
 dotnet_diagnostic.IDE0005.severity = warning
 dotnet_diagnostic.IDE0010.severity = none
 dotnet_diagnostic.IDE0016.severity = warning
+dotnet_diagnostic.IDE0022.severity = none
+dotnet_diagnostic.IDE0023.severity = none
+dotnet_diagnostic.IDE0024.severity = none
 dotnet_diagnostic.IDE0028.severity = warning
 dotnet_diagnostic.IDE0029.severity = warning
 dotnet_diagnostic.IDE0030.severity = warning
@@ -290,8 +295,9 @@ dotnet_diagnostic.IDE0071.severity = warning
 dotnet_diagnostic.IDE0082.severity = warning
 dotnet_diagnostic.IDE0072.severity = none
 dotnet_diagnostic.IDE0120.severity = warning
-dotnet_diagnostic.IDE0161.severity = warning
 dotnet_diagnostic.IDE0130.severity = none
+dotnet_diagnostic.IDE0160.severity = none
+dotnet_diagnostic.IDE0161.severity = warning
 dotnet_diagnostic.IDE0180.severity = warning
 dotnet_diagnostic.IDE0230.severity = warning
 dotnet_diagnostic.IDE0270.severity = warning

.github/workflows/build.yml

@@ -50,8 +50,10 @@ jobs:
     - name: Debug Build
       run: dotnet build --configuration Debug --no-restore --verbosity normal ${{ inputs.warningsAsErrors && '-warnaserror' || '' }}
     - name: Debug Tests
-      run: dotnet test --configuration Debug --no-restore --verbosity normal
+      timeout-minutes: 10
+      run: dotnet test --configuration Debug --no-restore --no-build --verbosity normal -- NUnit.DebugExecution=true NUnit.DebugDiscovery=true
     - name: Release Build
       run: dotnet build --configuration Release --no-restore --verbosity normal ${{ inputs.warningsAsErrors && '-warnaserror' || '' }}
     - name: Release Tests
-      run: dotnet test --configuration Release --no-restore --verbosity normal
+      timeout-minutes: 10
+      run: dotnet test --configuration Release --no-restore --no-build --verbosity normal

zzre.core.tests/SynchronizedTestFixture.cs

@@ -0,0 +1,38 @@
+using System;
+using System.Reflection;
+using System.Threading;
+using NUnit.Framework;
+
+// as workaround to STA not being supported on Linux
+// from: https://github.com/nunit/nunit/issues/4110
+
+public abstract class SynchronizedTestFixture
+{
+    private SynchronizationContext? _previousContext;
+    private SynchronizationContext? _ourContext;
+
+    [SetUp]
+    public void SynchronizedSetup()
+    {
+        _previousContext = SynchronizationContext.Current;
+        _ourContext = CreateNUnitSynchronizationContext();
+        SynchronizationContext.SetSynchronizationContext(_ourContext);
+    }
+
+    [TearDown]
+    public void SynchronizedTeardown()
+    {
+        SynchronizationContext.SetSynchronizationContext(_previousContext);
+    }
+
+    private static SynchronizationContext CreateNUnitSynchronizationContext()
+    {
+        Type type = typeof(Assert).Assembly.GetType("NUnit.Framework.Internal.SingleThreadedTestSynchronizationContext")!;
+
+        return (SynchronizationContext)Activator.CreateInstance(type,
+            BindingFlags.NonPublic | BindingFlags.Public | BindingFlags.Instance,
+            null,
+            [new TimeSpan(TimeSpan.TicksPerSecond)],
+            null)!;
+    }
+}