Fixed: Failing test and some flaky tests.

Co-Authored-By: taloth <taloth@users.noreply.github.com>

src/NzbDrone.Core.Test/Messaging/Commands/CommandExecutorFixture.cs

@@ -137,6 +137,9 @@ namespace NzbDrone.Core.Test.Messaging.Commands
             QueueAndWaitForExecution(commandModel);
 
             VerifyEventPublished<CommandExecutedEvent>();
+
+            Thread.Sleep(10);
+
             ExceptionVerification.ExpectedErrors(1);
         }
 

src/NzbDrone.Mono.Test/EnvironmentInfo/MonoPlatformInfoFixture.cs

@@ -1,4 +1,4 @@
-using System;
+using System;
 using FluentAssertions;
 using NUnit.Framework;
 using NzbDrone.Mono.EnvironmentInfo;
@@ -13,8 +13,11 @@ namespace NzbDrone.Mono.Test.EnvironmentInfo
         [Test]
         public void should_get_framework_version()
         {
-            Subject.Version.Major.Should().Be(4);
-            Subject.Version.Minor.Should().BeOneOf(0, 5, 6);
+            Subject.Version.Major.Should().BeOneOf(4, 5);
+            if (Subject.Version.Major == 4)
+            {
+                Subject.Version.Minor.Should().BeOneOf(0, 5, 6);
+            }
         }
     }
 }