wip: ensure FindComponents always runs on the renderers thread via the dispatcher

Author: egil

src/bunit.core/Rendering/TestRenderer.cs

@@ -151,12 +151,12 @@ protected override void ProcessPendingRender()
 		// where one will read the current render tree (find components)
 		// while the other thread (the renderer) updates the
 		// render tree.
-		lock (renderTreeAccessLock)
-		{
+		//lock (renderTreeAccessLock)
+		//{
 			logger.LogProcessingPendingRenders();
 
 			base.ProcessPendingRender();
-		}
+		//}
 	}
 
 	/// <inheritdoc/>
@@ -271,21 +271,26 @@ private TResult Render<TResult>(RenderFragment renderFragment, Func<int, TResult
 	private IReadOnlyList<IRenderedComponentBase<TComponent>> FindComponents<TComponent>(IRenderedFragmentBase parentComponent, int resultLimit)
 		where TComponent : IComponent
 	{
+		if (!Dispatcher.CheckAccess())
+		{
+			return Dispatcher.InvokeAsync(() => FindComponents<TComponent>(parentComponent, resultLimit)).GetAwaiter().GetResult();
+		}
+
 		if (parentComponent is null)
 			throw new ArgumentNullException(nameof(parentComponent));
 
 		var result = new List<IRenderedComponentBase<TComponent>>();
 		var framesCollection = new RenderTreeFrameDictionary();
-
+		
 		// the lock is in place to avoid a race condition between
 		// the dispatchers thread and the test frameworks thread,
 		// where one will read the current render tree (this method)
 		// while the other thread (the renderer) updates the
 		// render tree.
-		lock (renderTreeAccessLock)
-		{
+		//lock (renderTreeAccessLock)
+		//{
 			FindComponentsInternal(parentComponent.ComponentId);
-		}
+		//}
 
 		return result;
 
@@ -385,4 +390,4 @@ private void AssertNoUnhandledExceptions()
 			}
 		}
 	}
-}
+}