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diff --git a/ClojureCLR/Clojure/Clojure.Tests/LibTests/LazyConsTests.cs b/ClojureCLR/Clojure/Clojure.Tests/LibTests/LazyConsTests.cs
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+++ b/ClojureCLR/Clojure/Clojure.Tests/LibTests/LazyConsTests.cs
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+/**
+ *   Copyright (c) David Miller. All rights reserved.
+ *   The use and distribution terms for this software are covered by the
+ *   Eclipse Public License 1.0 (http://opensource.org/licenses/eclipse-1.0.php)
+ *   which can be found in the file epl-v10.html at the root of this distribution.
+ *   By using this software in any fashion, you are agreeing to be bound by
+ * 	 the terms of this license.
+ *   You must not remove this notice, or any other, from this software.
+ **/
+
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+
+using NUnit.Framework;
+using Rhino.Mocks;
+
+using clojure.lang;
+
+using RMExpect = Rhino.Mocks.Expect;
+
+
+namespace Clojure.Tests.LibTests
+{
+    [TestFixture]
+    public class LazyConsTests : AssertionHelper
+    {
+
+        #region C-tor tests
+
+        // Couldn't think of anything except to make sure it doesn't throw an exception.
+        [Test]
+        public void CtorWorks()
+        {
+            LazyCons lc = new LazyCons(null);
+
+            Expect(lc, Not.Null);
+        }
+
+        #endregion
+    }
+
+    [TestFixture]
+    public class LazyCons_ISeq_Tests : ISeqTestHelper
+    {
+        MockRepository _mocks ;
+        IFn _fn;
+        LazyCons _lc;
+        object[] _values;
+
+        [SetUp]
+        public void Setup()
+        {             
+            _mocks = new MockRepository();
+            _fn = _mocks.StrictMock<IFn>();
+            RMExpect.Call(_fn.invoke()).Return(10);
+            RMExpect.Call(_fn.invoke(null)).Return(new Cons(20,null));
+            _lc = new LazyCons(_fn);
+            _values = new object[] { 10, 20 };
+            _mocks.ReplayAll();
+        }
+
+        [TearDown]
+        public void Teardown()
+        {
+            _mocks.VerifyAll();
+        }
+
+        [Test]
+        public void ISeq_has_proper_values()
+        {
+            VerifyISeqContents(_lc, _values);
+        }
+
+        [Test]
+        public void First_caches()
+        {
+            _lc.first();
+            _lc.first();
+
+            // Need to meet expectation that _rest is called.
+            _lc.rest();
+        }
+
+        [Test]
+        public void Rest_calcs_first()
+        {
+            _lc.rest();
+        }
+
+        [Test]
+        public void Rest_caches()
+        {
+            _lc.rest();
+            _lc.rest();
+        }
+
+
+
+    }
+
+    [TestFixture]
+    public class LazyCons_IObj_Tests : IObjTests
+    {
+        [SetUp]
+        public void Setup()
+        {
+            MockRepository mocks = new MockRepository();
+            IPersistentMap meta = mocks.StrictMock<IPersistentMap>();
+            IFn fn = mocks.StrictMock<IFn>();
+            RMExpect.Call(fn.invoke()).Return(10);
+            RMExpect.Call(fn.invoke(null)).Return(null);
+            mocks.ReplayAll();
+
+            _objWithNullMeta = new LazyCons(fn);
+            _obj = _objWithNullMeta.withMeta(meta);
+            _expectedType = typeof(LazyCons);
+
+            mocks.VerifyAll();
+        }
+    }
+}