Unit testing the app.config file with NUnit

Question

When you guys are unit testing an application that relies on values from an app.config file? How do you test that those values are read in correctly and how your program re

Answer 1

You can call the set method of ConfigurationManager.AppSettings to set the values required for that particular unit test.

[SetUp]
public void SetUp()
{
  ConfigurationManager.AppSettings.Set("SettingKey" , "SettingValue");
  // rest of unit test code follows
}

When the unit test runs it will then use these values to run the code