Index: test/DeltaShell/DeltaShell.Tests/Gui/Forms/ProgressDialogTest.cs
===================================================================
diff -u
--- test/DeltaShell/DeltaShell.Tests/Gui/Forms/ProgressDialogTest.cs	(revision 0)
+++ test/DeltaShell/DeltaShell.Tests/Gui/Forms/ProgressDialogTest.cs	(revision 19ea0f299653bf649d87a4b6719248e5d27b4e58)
@@ -0,0 +1,99 @@
+using System.Diagnostics;
+using System.Threading;
+using System.Windows.Forms;
+using DelftTools.Shell.Core.Workflow;
+using DeltaShell.Gui.Forms.ProgressDialog;
+using NUnit.Framework;
+
+namespace DeltaShell.Tests.Gui.Forms
+{
+    [TestFixture]
+    class ProgressDialogTest
+    {
+        private ProgressDialog progressDlg;
+        private ActivityRunner activityRunner;
+
+        [TestFixtureSetUp]
+        public void FixtureSetUp()
+        {
+            progressDlg = new ProgressDialog();
+            activityRunner = new ActivityRunner();
+            progressDlg.Data = activityRunner.Activities;
+        }
+
+        [TestFixtureTearDown]
+        public void FixtureTearDown()
+        {
+            progressDlg = null;
+            activityRunner = null;
+        }
+
+        [Test]
+        public void ShowProgress()
+        {
+            activityRunner.Enqueue(new TimedActivity(3));
+            activityRunner.Enqueue(new TimedActivity(3));
+
+//            var Stopwatch
+
+            progressDlg.Show();
+
+            while (activityRunner.IsRunning)
+            {
+                Application.DoEvents();
+            }
+        }
+
+        private class TimedActivity: ParallelActivity
+        {
+            private int durationSec = 3;
+
+            public TimedActivity(int durationSec)
+            {
+                this.durationSec = durationSec;
+            }
+
+            protected override void OnInitialize()
+            {
+                Name = GetType().Name;
+            }
+
+            protected override void OnExecute()
+            {
+                for (var i = 0; i < durationSec; i++)
+                {
+                    SetProgressText(i.ToString());
+                    
+                    Thread.Sleep(1000);
+                }
+                Status = ActivityStatus.Done;
+            }
+
+            /// <summary>
+            /// Cancels current run. Changes status to <see cref="ActivityStatus.Cancelled"/>.
+            /// </summary>
+            /// <returns>True when finished.</returns>
+            protected override void OnCancel()
+            {
+                Status = ActivityStatus.Cancelled; 
+            }
+
+            /// <summary>
+            /// Performs clean-up of all internal resources.
+            /// </summary>
+            /// <returns>True when finished.</returns>
+            protected override void OnCleanUp()
+            {
+//                throw new Exception("Tried to cleanup, but not implemented");
+            }
+
+            /// <summary>
+            /// Activity has finished successfully.
+            /// </summary>
+            protected override void OnFinish()
+            {
+//                throw new Exception("Tried to finish, but not implemented");
+            }
+        }
+    }
+}