diff --git a/FabAccessAPI_Test/API_TestEnv_Test.cs b/FabAccessAPI_Test/API_TestEnv_Test.cs
index 8d6cbb9..606477c 100644
--- a/FabAccessAPI_Test/API_TestEnv_Test.cs
+++ b/FabAccessAPI_Test/API_TestEnv_Test.cs
@@ -9,7 +9,6 @@ using System.Security.Authentication;
 using System.Security.Cryptography.X509Certificates;
 using System.Threading.Tasks;
 using static FabAccessAPI.Schema.Machine;
-using static FabAccessAPI.Schema.MachineSystem;
 
 namespace FabAccessAPI_Test
 {
@@ -411,6 +410,8 @@ namespace FabAccessAPI_Test
     [Order(3)]
     public class Machine_Test
     {
+
+        #region SetUp
         public async Task ForceFree(string username, string machineID)
         {
             Console.WriteLine("start: " + machineID);
@@ -451,8 +452,8 @@ namespace FabAccessAPI_Test
 
             await Task.WhenAll(tasks);
         }
+        #endregion
 
-        // TODO: Force State before Test
         [TestCase("Admin1", "MachineA1")]
         [TestCase("ManagerA1", "MachineA1")]
         [TestCase("MakerA1", "MachineA1")]
@@ -483,5 +484,40 @@ namespace FabAccessAPI_Test
 
             Assert.AreEqual(MachineState.free, machine.State);
         }
+
+        [TestCase("MakerQRA", "MachineA1")]
+        [Order(1)]
+        public async Task UseWithoutDiscloseMaschineList(string username, string machineID)
+        {
+            Connection connection = await API_TestEnv_Test.Connect(username);
+            Session session = connection.Session;
+
+            MachineSystem.IInfoInterface infoInterface = await session.MachineSystem.Info().ConfigureAwait(false);
+            Machine machine = await infoInterface.GetMachine(machineID).ConfigureAwait(false);
+
+            // Check State before run Test
+            if (machine.State != MachineState.free)
+            {
+                API_TestEnv_Test.Disconnect(connection);
+                Assert.Inconclusive("State is not 'free'");
+            }
+
+            await machine.Use.Use().ConfigureAwait(false);
+
+            IReadOnlyList<Machine> machines = await infoInterface.GetMachineList().ConfigureAwait(false);
+            if(machines.Count != 1 && machines[0].Id != machineID)
+            {
+                Assert.Fail();
+            }
+
+            machine = await infoInterface.GetMachine(machineID).ConfigureAwait(false);
+            await machine.Inuse.GiveBack().ConfigureAwait(false);
+
+            machine = await infoInterface.GetMachine(machineID).ConfigureAwait(false);
+
+            API_TestEnv_Test.Disconnect(connection);
+
+            Assert.AreEqual(MachineState.free, machine.State);
+        }
     }
 }
\ No newline at end of file