How can I tell that my program is under unit test environment

Question

I have a console application. In release environment, it works perfectly at this time. When in IDE debug environment, I don't want the console window close, so I added this function, and calling it in the very end of my program.

[Conditional("DEBUG")]
public static void DebugWaitAKey(string message = "Press any key")
{
    Console.WriteLine(message);
    Console.ReadKey();
}

It works well for me, when I debug my program. But with unit testing, it still wait for a key before exiting!

The work-around is only unit-testing release edition of my program, or test other functions. But I do want something can identify current session is under unit testing, and use that flag in this function.

Answer 1

I believe this should answer your question. I took a class from there and adapted it to your situation.

/// <summary>
/// Detects if we are running inside a unit test.
/// </summary>
public static class UnitTestDetector
{
    static UnitTestDetector()
    {
        string testAssemblyName = "Microsoft.VisualStudio.QualityTools.UnitTestFramework";
    UnitTestDetector.IsInUnitTest = AppDomain.CurrentDomain.GetAssemblies()
        .Any(a => a.FullName.StartsWith(testAssemblyName));
    }

    public static bool IsInUnitTest { get; private set; }
}

Then I added a line to your method which if it is running a test it will not hit the Console.ReadKey();

[Conditional("DEBUG")]
public static void DebugWaitAKey(string message = "Press any key")
{
    Console.WriteLine(message);
    if(!UnitTestDetector.IsInUnitTest)
        Console.ReadKey();
}

Note: This would be considered a hack and would not be considered a best practice.

EDIT: I also created a sample project on github to demonstrate this code. https://github.com/jeffweiler8770/UnitTest