[C#] Add a broken test for issue #564.

Author: ZachBray

csharp/sbe-tests/Issue564Tests.cs

@@ -0,0 +1,54 @@
+using System;
+using Baseline;
+using Microsoft.VisualStudio.TestTools.UnitTesting;
+using Org.SbeTool.Sbe.Dll;
+
+namespace Org.SbeTool.Sbe.Tests
+{
+    [TestClass]
+    public class Issue564Tests
+    {
+        [TestMethod]
+        public void ShouldFailToEncodeGroupsThatExceedTheMaximumRepresentableSize()
+        {
+            // Arrange
+            var expectedSize = 1024 + (8 + 8 + 8 + 20) * ushort.MaxValue;
+            var buffer = new DirectBuffer(new byte[expectedSize]);
+            var car = new Car();
+            car.WrapForEncode(buffer, 0);
+            car.SerialNumber = 1234;
+            car.ModelYear = 2013;
+            car.Available = BooleanType.T;
+            car.Code = Model.A;
+            for (int i = 0, size = Car.SomeNumbersLength; i < size; i++)
+            {
+                car.SetSomeNumbers(i, (uint)i);
+            }
+            car.SetVehicleCode(System.Text.Encoding.ASCII.GetBytes("abcdef"), 0);
+            car.Extras = OptionalExtras.CruiseControl | OptionalExtras.SportsPack;
+
+            car.Engine.Capacity = 2000;
+            car.Engine.NumCylinders = 4;
+            car.Engine.SetManufacturerCode(System.Text.Encoding.ASCII.GetBytes("123"), 0);
+            car.Engine.Efficiency = 35;
+            car.Engine.BoosterEnabled = BooleanType.T;
+            car.Engine.Booster.BoostType = BoostType.NITROUS;
+            car.Engine.Booster.HorsePower = 200;
+            
+            // Act + Assert
+            Assert.ThrowsException<ArgumentOutOfRangeException>(() =>
+            {
+                int countUnrepresentableByGroupSizeEncoding = 1 + ushort.MaxValue;
+                var fuelFigures = car.FuelFiguresCount(countUnrepresentableByGroupSizeEncoding);
+                for (int i = 0; i < countUnrepresentableByGroupSizeEncoding; i++)
+                {
+                    fuelFigures.Next();
+                    fuelFigures.Speed = 30;
+                    fuelFigures.Mpg = 35.9f;
+                    var description = System.Text.Encoding.ASCII.GetBytes($"i={i}");
+                    fuelFigures.SetUsageDescription(description, 0, description.Length);
+                }
+            });
+        }
+    }
+}