Test - Add MethodRunnerQueueFacts.DisposeQueueThenEnqueueMethodInvocation

Test to validate that MethodRunnerQueue doesn't have the same issues as #3639

Author: amaitland

CefSharp.Test/CefSharp.Test.csproj

@@ -156,6 +156,7 @@
     <Compile Include="Framework\ConcurrentMethodRunnerQueueFacts.cs" />
     <Compile Include="Framework\CamelCaseNamingConverterFacts.cs" />
     <Compile Include="Framework\LegacyCamelCaseJavascriptNameConverterFacts.cs" />
+    <Compile Include="Framework\MethodRunnerQueueFacts.cs" />
     <Compile Include="Framework\MimeTypeMappingFacts.cs" />
     <Compile Include="Framework\PathCheckFacts.cs" />
     <Compile Include="Framework\RequestContextBuilderFacts.cs" />

CefSharp.Test/Framework/MethodRunnerQueueFacts.cs

@@ -0,0 +1,35 @@
+// Copyright © 2021 The CefSharp Authors. All rights reserved.
+//
+// Use of this source code is governed by a BSD-style license that can be found in the LICENSE file.
+
+using CefSharp.Internals;
+using Xunit;
+
+namespace CefSharp.Test.Framework
+{
+    public class MethodRunnerQueueFacts
+    {
+        [Fact]
+        public void DisposeQueueThenEnqueueMethodInvocation()
+        {
+            var methodInvocation = new MethodInvocation(1, 1, 1, "Testing", 1);
+            methodInvocation.Parameters.Add("Echo Me!");
+
+            var objectRepository = new JavascriptObjectRepository
+            {
+                NameConverter = null
+            };
+
+            var methodRunnerQueue = new MethodRunnerQueue(objectRepository);
+
+            //Dispose
+            methodRunnerQueue.Dispose();
+
+            //Enqueue
+            var ex = Record.Exception(() => methodRunnerQueue.Enqueue(methodInvocation));
+
+            //Ensure no exception thrown
+            Assert.Null(ex);
+        }
+    }
+}