@@ -19,6 +19,136 @@ public void Dispose()
             PythonEngine.Shutdown();
         }
 
+        [Test]
+        public void TestStringIsListType()
+        {
+            var s = new PyString("foo");
+            Assert.False(PyList.IsListType(s));
+        }
+
+        [Test]
+        public void TestListIsListType()
+        {
+            var s = new PyList();
+            Assert.True(PyList.IsListType(s));
+        }
+
+        [Test]
+        public void TestStringAsListType()
+        {
+            var i = new PyInt(5);
+            PyList t = null;
+
+            var ex = Assert.Throws<PythonException>(() => t = PyList.AsList(i));
+
+            Assert.AreEqual("TypeError : 'int' object is not iterable", ex.Message);
+            Assert.IsNull(t);
+        }
+
+        [Test]
+        public void TestListAsListType()
+        {
+            var l = new PyList();
+            PyList t = PyList.AsList(l);
+
+            Assert.IsNotNull(t);
+            Assert.IsInstanceOf(typeof(PyList), t);
+        }
+
+        [Test]
+        public void TestEmptyCtor()
+        {
+            var s = new PyList();
+
+            Assert.IsInstanceOf(typeof(PyList), s);
+            Assert.AreEqual(0, s.Length());
+        }
+
+        [Test]
+        public void TestPyObjectArrayCtor()
+        {
+            var ai = new PyObject[] {new PyInt(3), new PyInt(2), new PyInt(1) };
+            var s = new PyList(ai);
+
+            Assert.IsInstanceOf(typeof(PyList), s);
+            Assert.AreEqual(3, s.Length());
+            Assert.AreEqual("3", s[0].ToString());
+            Assert.AreEqual("2", s[1].ToString());
+            Assert.AreEqual("1", s[2].ToString());
+        }
+
+        [Test]
+        public void TestPyObjectCtor()
+        {
+            var a = new PyList();
+            var s = new PyList(a);
+
+            Assert.IsInstanceOf(typeof(PyList), s);
+            Assert.AreEqual(0, s.Length());
+        }
+
+        [Test]
+        public void TestBadPyObjectCtor()
+        {
+            var i = new PyInt(5);
+            PyList t = null;
+
+            var ex = Assert.Throws<ArgumentException>(() => t = new PyList(i));
+
+            Assert.AreEqual("object is not a list", ex.Message);
+            Assert.IsNull(t);
+        }
+
+        [Test]
+        public void TestAppend()
+        {
+            var ai = new PyObject[] { new PyInt(3), new PyInt(2), new PyInt(1) };
+            var s = new PyList(ai);
+            s.Append(new PyInt(4));
+
+            Assert.AreEqual(4, s.Length());
+            Assert.AreEqual("4", s[3].ToString());
+        }
+
+        [Test]
+        public void TestInsert()
+        {
+            var ai = new PyObject[] { new PyInt(3), new PyInt(2), new PyInt(1) };
+            var s = new PyList(ai);
+            s.Insert(0, new PyInt(4));
+
+            Assert.AreEqual(4, s.Length());
+            Assert.AreEqual("4", s[0].ToString());
+        }
+
+        [Test]
+        public void TestReverse()
+        {
+            var ai = new PyObject[] { new PyInt(3), new PyInt(1), new PyInt(2) };
+            var s = new PyList(ai);
+
+            s.Reverse();
+
+            Assert.AreEqual(3, s.Length());
+            Assert.AreEqual("2", s[0].ToString());
+            Assert.AreEqual("1", s[1].ToString());
+            Assert.AreEqual("3", s[2].ToString());
+        }
+
+        [Test]
+        public void TestSort()
+        {
+            var ai = new PyObject[] { new PyInt(3), new PyInt(1), new PyInt(2) };
+            var s = new PyList(ai);
+
+            s.Sort();
+
+            Assert.AreEqual(3, s.Length());
+            Assert.AreEqual("1", s[0].ToString());
+            Assert.AreEqual("2", s[1].ToString());
+            Assert.AreEqual("3", s[2].ToString());
+        }
+
         [Test]
         public void TestOnPyList()
         {