Import code from previous AssetBuilder version

test/ZoneCodeGeneratorTests/AssertionExtensions.cs

@@ -0,0 +1,25 @@
+using System.Collections;
+using System.Linq;
+using Microsoft.VisualStudio.TestTools.UnitTesting;
+
+namespace ZoneCodeGeneratorTests
+{
+    public static class AssertionExtensions
+    {
+        public static void Contains(this Assert assert, object expected, ICollection collection)
+        {
+            if (collection.Cast<object>().Any(item => item == expected))
+            {
+                return;
+            }
+
+            throw new AssertFailedException();
+        }
+
+        public static void IsZero(this Assert assert, int number)
+        {
+            if(number != 0)
+                throw new AssertFailedException();
+        }
+    }
+}