diff --git a/S7.Net.UnitTest/ProtocolTests.cs b/S7.Net.UnitTest/ProtocolTests.cs
index 4d53f17..b18ebe8 100644
--- a/S7.Net.UnitTest/ProtocolTests.cs
+++ b/S7.Net.UnitTest/ProtocolTests.cs
@@ -13,7 +13,7 @@ namespace S7.Net.UnitTest
     [TestClass]
     public class ProtocolUnitTest
     {
-        private TestContext TestContext { get; set; }
+        public TestContext TestContext { get; set; }
 
         [TestMethod]
         public async Task TPKT_Read()
diff --git a/S7.Net.UnitTest/S7NetTestsSync.cs b/S7.Net.UnitTest/S7NetTestsSync.cs
index 0ad4efa..162c5a2 100644
--- a/S7.Net.UnitTest/S7NetTestsSync.cs
+++ b/S7.Net.UnitTest/S7NetTestsSync.cs
@@ -38,6 +38,7 @@ namespace S7.Net.UnitTest
         const int DB2 = 2;
         const int DB4 = 4;
         const short TestServerPort = 31122;
+        const string TestServerIp = "127.0.0.1";
         #endregion
 
         #region Private fields
@@ -56,7 +57,7 @@ namespace S7.Net.UnitTest
 
         private static Plc CreatePlc()
         {
-            return new Plc(CpuType.S7300, "localhost", TestServerPort, 0, 2);
+            return new Plc(CpuType.S7300, TestServerIp, TestServerPort, 0, 2);
         }
 
         [TestInitialize]
diff --git a/S7.Net.UnitTest/StreamTests.cs b/S7.Net.UnitTest/StreamTests.cs
index 375c02c..9cb0969 100644
--- a/S7.Net.UnitTest/StreamTests.cs
+++ b/S7.Net.UnitTest/StreamTests.cs
@@ -65,7 +65,7 @@ namespace S7.Net.UnitTest
     [TestClass]
     public class StreamTests
     {
-        private TestContext TestContext { get; set; }
+        public TestContext TestContext { get; set; }
 
         [TestMethod]
         public async Task TPKT_ReadRestrictedStreamAsync()