Field removal to their own classes

SabreTools.Test/Filtering/RemoverTests.cs

@@ -0,0 +1,45 @@
+using SabreTools.DatItems;
+using SabreTools.Filtering;
+using Xunit;
+
+namespace SabreTools.Test.Filtering
+{
+    public class RemoverTests
+    {
+        [Fact]
+        public void RemoveFieldsDatItemTest()
+        {
+            var datItem = CreateDatItem();
+            var remover = new DatItemRemover();
+            remover.SetRemover("DatItem.Name");
+            remover.RemoveFields(datItem);
+            Assert.Null(datItem.GetName());
+        }
+
+        [Fact]
+        public void RemoveFieldsMachineTest()
+        {
+            var datItem = CreateDatItem();
+            var remover = new DatItemRemover();
+            remover.SetRemover("Machine.Name");
+            remover.RemoveFields(datItem);
+            Assert.Null(datItem.Machine.Name);
+        }
+
+        /// <summary>
+        /// Generate a consistent DatItem for testing
+        /// </summary>
+        private DatItem CreateDatItem()
+        {
+            return new Rom
+            {
+                Name = "foo",
+                Machine = new Machine
+                {
+                    Name = "bar",
+                    Description = "bar",
+                }
+            };
+        }
+    }
+}