Pass parameters to PrivateObject method [duplicate]

Question

This question already has answers here:

How to pass a parameter as a reference with MethodInfo.Invoke (2 answers)

Closed 9 years ago.

I am trying to unit test private method. I saw example below on this question

Class target = new Class();
PrivateObject obj = new PrivateObject(target);
var retVal = obj.Invoke("PrivateMethod");
Assert.AreEqual(retVal);

My private method has 2 ref params. How to pass them?

Answer 1

If you pass the argument array, then any ref parameters will be populated in place:

bool p1 = true; // can be others values
bool p2 = false; // can be others values
object[] args = new object[2] { p1, p2 };
var retval = obj.Invoke("PrivateMethod", args);

p1 = (bool)args[0];
p2 = (bool)args[1];

Answer 2

First create an object array of your parameters. the array should then contain the new references:

Class target = new Class();
PrivateObject obj = new PrivateObject(target);
object[] args = new object[] {arg1, arg2};
var retVal = obj.Invoke("PrivateMethodWithArgs", args);
Assert.AreEqual(retVal);

Debug.WriteLine(args[0]);
Debug.WriteLine(args[1]);

Answer 3

Try This:

object [] myarray=new object[]{param1,param2};
var retVal = obj.Invoke("PrivateMethod",ref myarray);