Index: test/Common/DelftTools.Utils.Tests/Collections/EnumerableExtensionsTest.cs
===================================================================
diff -u -r8f6ae890fed8e8eae3a32f9c0498a10f82e0ddf9 -r3231c54b8de174cf77967f25312ea59a170da0c6
--- test/Common/DelftTools.Utils.Tests/Collections/EnumerableExtensionsTest.cs	(.../EnumerableExtensionsTest.cs)	(revision 8f6ae890fed8e8eae3a32f9c0498a10f82e0ddf9)
+++ test/Common/DelftTools.Utils.Tests/Collections/EnumerableExtensionsTest.cs	(.../EnumerableExtensionsTest.cs)	(revision 3231c54b8de174cf77967f25312ea59a170da0c6)
@@ -1,4 +1,5 @@
-using System.Collections;
+using System;
+using System.Collections;
 using System.Collections.Generic;
 using System.Linq;
 using DelftTools.Utils.Collections;
@@ -77,7 +78,6 @@
             Assert.IsFalse(new[] { 1, 2, 1}.IsMonotonousAscending());
         }
 
-
         [Test]
         public void SplitInGroupsAndVerify()
         {
@@ -93,5 +93,14 @@
             Assert.AreEqual(5, items1.SplitInGroups(5).ToList()[1][0]);
             
         }
+
+        [Test]
+        public void Count()
+        {
+            var expectedCount = new Random().Next(100);
+            IEnumerable enumerable = Enumerable.Range(1, expectedCount);
+
+            Assert.AreEqual(expectedCount, enumerable.Count());
+        }
     }
 }
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