Question

I have a public method that uses a local private method to get data from the Db.


private string SomeMethod(string)
{
...
Doing some operations
...
string data = GetDBData(string);
Doing some operations
...
}


I want to divert/isolate the private method GetDBData(string) using moles so my test will not require the DB.

Obviously, my question is: how to do it?
thank you
Uria

EDIT
Additional information:

i tried to change the method accessors both to public and internal protected,
in both cases i can now see the methods as moles.
BUT when running the test, the original method is still being used and not the detour I’ve implemented in the PexMethod.

Answer 1

I figured it out

If i have the public MyClass with private SomeMethod

public class MyClass
{
    private string SomeMethod(string str){}
}

if you want to mole the SomeMethod method you need to use AllInstances in the test method:

[PexMethod]
SomeMethod(string str)
{
    MMyClass.AllInstances.SomeMethod = (instance, str) => { return "A return string"; };
}

• notice that the lambda receives an instance parameter as the first parameter. I’m not sure what it’s function is.