diff --git a/packaging/dotnet-core/test.cs b/packaging/dotnet-core/test.cs
new file mode 100644
index 00000000..33484825
--- /dev/null
+++ b/packaging/dotnet-core/test.cs
@@ -0,0 +1,43 @@
+using System;
+using System.Runtime.InteropServices;
+
+internal static class Program
+{
+    internal static int Main()
+    {
+        Console.WriteLine("sodium_version_string: {0}", Marshal.PtrToStringAnsi(sodium_version_string()));
+        Console.WriteLine("sodium_library_version_major: {0}", sodium_library_version_major());
+        Console.WriteLine("sodium_library_version_minor: {0}", sodium_library_version_minor());
+        Console.WriteLine("sodium_library_minimal: {0}", sodium_library_minimal());
+        int error = sodium_init();
+        Console.WriteLine("sodium_init: {0}", error);
+        if (error == 0)
+        {
+            randombytes_buf(out ulong buf, (UIntPtr)sizeof(ulong));
+            Console.WriteLine("randombytes_buf: 0x'{0:X8}'", buf);
+            Console.WriteLine("crypto_aead_aes256gcm_is_available: {0}", crypto_aead_aes256gcm_is_available());
+        }
+        return error == 0 ? 0 : 1;
+    }
+
+    [DllImport("libsodium", CallingConvention = CallingConvention.Cdecl)]
+    private static extern int crypto_aead_aes256gcm_is_available();
+
+    [DllImport("libsodium", CallingConvention = CallingConvention.Cdecl)]
+    private static extern void randombytes_buf(out ulong buf, UIntPtr size);
+
+    [DllImport("libsodium", CallingConvention = CallingConvention.Cdecl)]
+    private static extern int sodium_init();
+
+    [DllImport("libsodium", CallingConvention = CallingConvention.Cdecl)]
+    private static extern int sodium_library_version_major();
+
+    [DllImport("libsodium", CallingConvention = CallingConvention.Cdecl)]
+    private static extern int sodium_library_minimal();
+
+    [DllImport("libsodium", CallingConvention = CallingConvention.Cdecl)]
+    private static extern int sodium_library_version_minor();
+
+    [DllImport("libsodium", CallingConvention = CallingConvention.Cdecl)]
+    private static extern IntPtr sodium_version_string();
+}