Fix for #31 support deserialization of IEnumerable with Add methods.

src/Binaron.Serializer.Tests/CustomTestCollection.cs

@@ -0,0 +1,39 @@
+using System;
+using System.Collections;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace Binaron.Serializer.Tests
+{
+    public class CustomTestCollection<T> : IEnumerable<T>
+    {
+        private List<T> mList = new List<T>();
+
+        public T this[int index] => mList[index];
+
+        public int Count => mList.Count;
+
+        public void Add(T value) => mList.Add(value);
+
+
+        public IEnumerator<T> GetEnumerator() => mList.GetEnumerator();
+
+        IEnumerator IEnumerable.GetEnumerator() => mList.GetEnumerator();
+
+        public class TestCollectionObject
+        {
+            public T A { get; set; }
+
+            public TestCollectionObject()
+            {
+            }
+
+            public TestCollectionObject(T a)
+            {
+                A = a;
+            }
+        }
+    }
+}

src/Binaron.Serializer.Tests/ListSerializationTests.cs

@@ -1,4 +1,4 @@
-using System;
+using System;
 using System.Collections;
 using System.Collections.Generic;
 using System.IO;
@@ -265,5 +265,60 @@ private static TList AddItem<TList, TItem>(TList source, TItem item) where TList
                     throw new NotSupportedException();
             }
         }
+
+        [Test]
+        public void CustomCollectionIntTest()
+        {
+            CustomTestCollection<int> collection = new CustomTestCollection<int>()
+            {
+                0, 1, 2, 3, 4
+            };
+
+            var dest = Tester.TestRoundTrip<CustomTestCollection<int>>(collection);
+            Assert.AreEqual(5, dest.Count);
+            Assert.AreEqual(0, dest[0]);
+            Assert.AreEqual(1, dest[1]);
+            Assert.AreEqual(2, dest[2]);
+            Assert.AreEqual(3, dest[3]);
+            Assert.AreEqual(4, dest[4]);
+        }
+
+        [Test]
+        public void CustomCollectionStringTest()
+        {
+            CustomTestCollection<string> collection = new CustomTestCollection<string>()
+            {
+                "0", "1", "2", "3", "4"
+            };
+
+            var dest = Tester.TestRoundTrip<CustomTestCollection<string>>(collection);
+            Assert.AreEqual(5, dest.Count);
+            Assert.AreEqual("0", dest[0]);
+            Assert.AreEqual("1", dest[1]);
+            Assert.AreEqual("2", dest[2]);
+            Assert.AreEqual("3", dest[3]);
+            Assert.AreEqual("4", dest[4]);
+        }
+
+        [Test]
+        public void CustomCollectionObjectTest()
+        {
+            CustomTestCollection<CustomTestCollection<int>.TestCollectionObject> collection = new CustomTestCollection<CustomTestCollection<int>.TestCollectionObject>()
+            {
+                new CustomTestCollection<int>.TestCollectionObject(0),
+                new CustomTestCollection<int>.TestCollectionObject(1),
+                new CustomTestCollection<int>.TestCollectionObject(2),
+                new CustomTestCollection<int>.TestCollectionObject(3),
+                new CustomTestCollection<int>.TestCollectionObject(4),
+            };
+
+            var dest = Tester.TestRoundTrip(collection);
+            Assert.AreEqual(5, dest.Count);
+            Assert.AreEqual(0, dest[0].A);
+            Assert.AreEqual(1, dest[1].A);
+            Assert.AreEqual(2, dest[2].A);
+            Assert.AreEqual(3, dest[3].A);
+            Assert.AreEqual(4, dest[4].A);
+        }
     }
 }