1 files changed, 134 insertions, 0 deletions
diff --git a/tests/src/Interop/MarshalAPI/ReadWrite/ReadWriteByte.cs b/tests/src/Interop/MarshalAPI/ReadWrite/ReadWriteByte.cs
new file mode 100644
index 0000000000..eb36714802
--- /dev/null
+++ b/tests/src/Interop/MarshalAPI/ReadWrite/ReadWriteByte.cs
@@ -0,0 +1,134 @@
+using System;
+using System.Runtime.InteropServices;
+using System.Runtime.InteropServices.ComTypes;
+
+
+public class ReadWriteByteTest
+{
+    private byte[] TestValues = { 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, byte.MaxValue };
+
+    private void NullValueTests()
+    {
+        byte value;
+
+        try
+        {
+            value = Marshal.ReadByte(IntPtr.Zero);
+          
+        }
+        catch (Exception e)
+        {
+            if (e.GetType().FullName == "System.AccessViolationException")
+            {
+                
+            }
+            else if (e.GetType().FullName == "System.NullReferenceException")
+            {
+                
+            }
+            else
+            {
+                throw e;
+            }
+        }
+
+        try
+        {
+            value = Marshal.ReadByte(IntPtr.Zero, 2);           
+            
+        }
+        catch (Exception e)
+        {
+            if (e.GetType().FullName == "System.AccessViolationException")
+            {                
+            }
+            else if (e.GetType().FullName == "System.NullReferenceException") 
+            {                
+            }
+            else
+            {
+                throw e;
+            }
+        }
+
+        try
+        {
+            Marshal.WriteByte(IntPtr.Zero, TestValues[0]);
+            
+        }
+        catch (Exception e)
+        {
+            if (e.GetType().FullName == "System.AccessViolationException")
+            {                
+            }
+            else if (e.GetType().FullName == "System.NullReferenceException") // ProjectN throws NullReferenceException
+            {                
+            }
+            else
+            {
+                throw e;
+            }
+        }
+
+        try
+        {
+            Marshal.WriteByte(IntPtr.Zero, 2, TestValues[0]);
+            
+        }
+        catch (Exception e)
+        {
+            if (e.GetType().FullName == "System.AccessViolationException") {
+                
+            }
+            else if (e.GetType().FullName == "System.NullReferenceException") // ProjectN throws NullReferenceException
+            {
+                
+            }
+            else
+            {
+                throw e;
+            }
+        }
+    }
+
+    private void ReadWriteRoundTripTests()
+    {
+        int sizeOfArray = Marshal.SizeOf(TestValues[0]) * TestValues.Length;
+
+        IntPtr ptr = Marshal.AllocCoTaskMem(sizeOfArray);
+        Marshal.WriteByte(ptr, TestValues[0]);
+
+        for (int i = 1; i < TestValues.Length; i++)
+        {
+            Marshal.WriteByte(ptr, i * Marshal.SizeOf(TestValues[0]), TestValues[i]);
+        }
+
+        byte value = Marshal.ReadByte(ptr);
+        if (!value.Equals(TestValues[0]))
+        {
+            throw new Exception("Failed round trip ReadWrite test.");
+        }
+
+        for (int i = 1; i < TestValues.Length; i++)
+        {
+            value = Marshal.ReadByte(ptr, i * Marshal.SizeOf(TestValues[0]));
+            if (!value.Equals(TestValues[i]))
+            {
+                throw new Exception("Failed round trip ReadWrite test.");
+            }
+        }
+        Marshal.FreeCoTaskMem(ptr);
+    }
+
+    public void RunTests()
+    {        
+        NullValueTests();
+        ReadWriteRoundTripTests();
+    }
+
+    public static int Main(String[] unusedArgs)
+    {
+       new ReadWriteByteTest().RunTests();
+       return 100;
+    }
+}