Tests: Add Enums field offsets test (#62)

Il2CppTests/TestSources/Enums.cs

@@ -0,0 +1,79 @@
+/*
+    Copyright 2020 Katy Coe - http://www.djkaty.com - https://github.com/djkaty
+
+    All rights reserved.
+*/
+
+namespace Il2CppTests.TestSources
+{
+    // Test to ensure that offsets in structs and classes are calculated correctly for various enum field sizes
+
+#pragma warning disable CS0169
+    public enum EnumOfSize1 : byte
+    {
+        Option1,
+        Option2,
+        Option3
+    }
+
+    public enum EnumOfSize2 : ushort
+    {
+        Option1,
+        Option2,
+        Option3
+    }
+
+    public enum EnumOfSize4 : int
+    {
+        Option1,
+        Option2,
+        Option3
+    }
+
+    public enum EnumOfSize8 : ulong
+    {
+        Option1,
+        Option2,
+        Option3
+    }
+
+    public struct StructWithEnumFields
+    {
+        ushort a;
+        EnumOfSize1 b;
+        ushort c;
+        EnumOfSize2 d;
+        ushort e;
+        EnumOfSize4 f;
+        ushort g;
+        EnumOfSize8 h;
+        ushort i;
+    }
+
+    public class ClassWithEnumFields
+    {
+        ushort a;
+        EnumOfSize1 b;
+        ushort c;
+        EnumOfSize2 d;
+        ushort e;
+        EnumOfSize4 f;
+        ushort g;
+        EnumOfSize8 h;
+        ushort i;
+    }
+
+    public class ClassWithEnumAutoProperties
+    {
+        ushort a { get; }
+        EnumOfSize1 b { get; }
+        ushort c { get; }
+        EnumOfSize2 d { get; }
+        ushort e { get; }
+        EnumOfSize4 f { get; }
+        ushort g { get; }
+        EnumOfSize8 h { get; }
+        ushort i { get; }
+    }
+#pragma warning disable CS0169
+}