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// ParameterBuilderTest.cs
//
// Author: Gleb Golubitsky <sectoid@gnolltech.org>
//
// (c) 2012 Gleb Golubitsky
//
using System;
using System.Reflection.Emit;
using System.Reflection;
using NUnit.Framework;
namespace MonoTests.System.Reflection.Emit
{
/// <summary>
/// A test fixture for System.Reflection.Emit.ParameterBuilder class
/// </summary>
[TestFixture]
public class ParameterBuilderTest
{
[Test]
/// <summary>
/// Unit test for a problem in ParameterBuilder.SetConstant
/// method. The problem is described at bug #3912.
/// (https://bugzilla.xamarin.com/show_bug.cgi?id=3912)
/// </summary>
public void ParameterBuilderSetConstant_Bug3912 ()
{
var aName = new AssemblyName("DynamicAssemblyExample");
var ab = AppDomain.CurrentDomain
.DefineDynamicAssembly(aName, AssemblyBuilderAccess.Run);
var mb = ab.DefineDynamicModule(aName.Name);
var eb = mb.DefineEnum("TestEnum",
TypeAttributes.Public,
typeof(int));
eb.DefineLiteral("Low", 0);
eb.DefineLiteral("High", 1);
var tb = mb.DefineType("MyDynamicType", TypeAttributes.Public);
var hello = tb.DefineMethod("Fail",
MethodAttributes.Public,
typeof(void),
new [] { eb, });
var builder = hello.DefineParameter(1, ParameterAttributes.In, "failParam");
builder.SetConstant(1);
}
public enum E : byte {
E1, E2
}
[Test]
public void SetConstantNullable ()
{
// SetConstant for a Nullable<X> parameter for various X.
var aName = new AssemblyName ("TestSetConstantNullable");
var ab = AppDomain.CurrentDomain.DefineDynamicAssembly (aName, AssemblyBuilderAccess.Run);
var mb = ab.DefineDynamicModule (aName.Name);
var tb = mb.DefineType ("TestItf", TypeAttributes.Abstract | TypeAttributes.Interface);
var paramTypes = new[] { typeof (int?), typeof (int?),
typeof (E?), typeof (E?) };
var methb = tb.DefineMethod ("Method", MethodAttributes.Public | MethodAttributes.Abstract | MethodAttributes.Virtual, typeof (void), paramTypes);
var pb = new ParameterBuilder [paramTypes.Length];
for (int idx = 0, pnum = 1; idx < paramTypes.Length; idx++, pnum++) {
pb [idx] = methb.DefineParameter (pnum, ParameterAttributes.Optional | ParameterAttributes.HasDefault, "arg" + idx);
}
pb [0].SetConstant (null);
pb [1].SetConstant (42);
pb [2].SetConstant (null);
pb [3].SetConstant (E.E2);
var t = tb.CreateType ();
var mi = t.GetMethod ("Method");
Assert.IsNotNull (mi);
var ps = mi.GetParameters ();
Assert.AreEqual (null, ps[0].DefaultValue);
Assert.AreEqual (42, ps[1].DefaultValue);
Assert.AreEqual (null, ps[2].DefaultValue);
Assert.AreEqual ((byte)E.E2, ps[3].DefaultValue);
}
}
}
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