BltMapTests.cs

        #region Types

        public class TestStep
        {
            public string Step { get; set; }
        }

        internal class Test_Int
        {
            private BindingList<TestStep> _steps;

            public Test_Int()
            {
                InitializeStepsList();
            }

            public bool NotNullSetterCalled = false;

            private void InitializeStepsList(IList<TestStep> init = null)
            {
                _steps = new BindingList<TestStep>(init ?? new List<TestStep>());
                if (init != null) NotNullSetterCalled = true;
            }

            [MapField(Storage = "Steps")]
            public IList<TestStep> Steps
            {
                get { return _steps; }
                private set { InitializeStepsList(value); }
            }
        }

        public class Test_Pub
        {
            private BindingList<TestStep> _steps;

            public Test_Pub()
            {
                InitializeStepsList();
            }

            public bool NotNullSetterCalled = false;

            private void InitializeStepsList(IList<TestStep> init = null)
            {
                _steps = new BindingList<TestStep>(init ?? new List<TestStep>());
                if (init != null) NotNullSetterCalled = true;
            }

            [MapField(Storage = "Steps")]
            public IList<TestStep> Steps
            {
                get { return _steps; }
                private set { InitializeStepsList(value); }
            }
        }

        public class TestStepRecord
        {
            public string Step { get; set; }
        }

        public class TestRecord
        {
            public List<TestStepRecord> Steps;
        }


        #endregion

        [TestMethod]
        public void TestMapFieldSetter()
        {
            //Arrange
            var tta = TypeAccessor.GetAccessor<Test_Int>();
            var ma = ExprMemberAccessor.GetMemberAccessor(tta, "Steps");
            var test = (Test_Int)tta.CreateInstance();
            var list = new List<TestStep>() { new TestStep() };

            //Act
            ma.SetValue(test, list);

            //Assert
            Assert.IsTrue(test.Steps.Count == 1);
        }

        [TestMethod]
        public void TestExpressionMapper_Int()
        {
            //Arrange
            var em = new ExpressionMapper<TestRecord, Test_Int>();
            var tr = new TestRecord {Steps = new List<TestStepRecord> {new TestStepRecord {Step = "Test"}}};

            //Act
            var t = em.GetMapper()(tr);

            //Assert
            Assert.IsTrue(t.Steps.Count == 1);
            Assert.IsTrue(t.NotNullSetterCalled);
        }


        [TestMethod]
        public void TestExpressionMapper_Pub()
        {
            //Arrange
            var em = new ExpressionMapper<TestRecord, Test_Pub>();
            var tr = new TestRecord { Steps = new List<TestStepRecord> { new TestStepRecord { Step = "Test" } } };

            //Act
            var t = em.GetMapper()(tr);

            //Assert
            Assert.IsTrue(t.Steps.Count == 1);
            Assert.IsTrue(t.NotNullSetterCalled);
        }