public static void TestDynamicInvokeCastingByRef()
{
{
Delegate d = new DFoo2(Foo2);
Object[] args = { 7 };
d.DynamicInvoke(args);
Assert.Equal(args[0], 8);
}
{
Delegate d = new DFoo2(Foo2);
Object[] args = { null };
d.DynamicInvoke(args);
Assert.Equal(args[0], 1);
}
// for "byref ValueType" arguments, the incoming is allowed to be null. The target will receive default(ValueType).
{
Delegate d = new DFoo3(Foo3);
Object[] args = { null };
d.DynamicInvoke(args);
MyStruct s = (MyStruct)(args[0]);
Assert.Equal(s.X, 7);
Assert.Equal(s.Y, 8);
}
// For "byref ValueType" arguments, the type must match exactly.
{
Delegate d = new DFoo2(Foo2);
Object[] args = { (uint)7 };
Assert.Throws <ArgumentException>(() => d.DynamicInvoke(args));
}
{
Delegate d = new DFoo2(Foo2);
Object[] args = { E4.One };
Assert.Throws <ArgumentException>(() => d.DynamicInvoke(args));
}
return;
}
public static void DynamicInvoke_CastingByRef()
{
{
Delegate d = new DFoo2(Foo2);
object[] args = { 7 };
d.DynamicInvoke(args);
Assert.Equal(args[0], 8);
}
{
Delegate d = new DFoo2(Foo2);
object[] args = { null };
d.DynamicInvoke(args);
Assert.Equal(args[0], 1);
}
// for "byref ValueType" arguments, the incoming is allowed to be null. The target will receive default(ValueType).
{
Delegate d = new DFoo3(Foo3);
object[] args = { null };
d.DynamicInvoke(args);
MyStruct s = (MyStruct)(args[0]);
Assert.Equal(s.X, 7);
Assert.Equal(s.Y, 8);
}
// For "byref ValueType" arguments, the type must match exactly.
{
Delegate d = new DFoo2(Foo2);
object[] args = { (uint)7 };
Assert.Throws<ArgumentException>(() => d.DynamicInvoke(args));
}
{
Delegate d = new DFoo2(Foo2);
object[] args = { E4.One };
Assert.Throws<ArgumentException>(() => d.DynamicInvoke(args));
}
}