Simplify explicit configuration loading check for tests

Author: bahusoid

src/NHibernate.Test/TestsContext.cs

@@ -1,27 +1,21 @@
 #if NETCOREAPP2_0
-
 using NUnit.Framework;
 using System.Configuration;
-using System.IO;
 using NHibernate.Cfg;
 
 namespace NHibernate.Test
 {
 	[SetUpFixture]
 	public class TestsContext
 	{
-		private static bool ExecutingWithVsTest { get; } =
-			System.Reflection.Assembly.GetEntryAssembly()?.GetName().Name == "testhost";
-
 		[OneTimeSetUp]
 		public void RunBeforeAnyTests()
 		{
 			//When .NET Core App 2.0 tests run from VS/VSTest the entry assembly is "testhost.dll"
 			//so we need to explicitly load the configuration
-			if (ExecutingWithVsTest)
+			if (System.Reflection.Assembly.GetEntryAssembly() != null)
 			{
-				var assemblyPath = Path.Combine(TestContext.CurrentContext.TestDirectory, Path.GetFileName(typeof(TestsContext).Assembly.Location));
-				ConfigurationProvider.Current = new SystemConfigurationProvider(ConfigurationManager.OpenExeConfiguration(assemblyPath));
+				ConfigurationProvider.Current = new SystemConfigurationProvider(ConfigurationManager.OpenExeConfiguration(typeof(TestsContext).Assembly.Location));
 			}
 		}
 	}