How to detect whether android app is running UI test with Espresso

Question

I am writing some Espresso tests for Android. I am running in the the following problem:

In order for a certain test case to run properly, I need to disable some features in the app. Therefore, in my app, I need to detect whether I am running Espresso test so that I can disable it. However, I don't want to use BuildConfig.DEBUG to because I don't want those features to be disabled in a debug build. Also, I would like to avoid creating a new buildConfig to avoid too many build variants to be created (we already have a lot of flavors defined).

I was looking for a way to define buildConfigField for test but I couldn't find any reference on Google.

Answer 1

Combined with CommonsWare's comment. Here is my solution:

I defined an AtomicBoolean variable and a function to check whether it's running test:

private AtomicBoolean isRunningTest;  public synchronized boolean isRunningTest () {     if (null == isRunningTest) {         boolean istest;          try {             Class.forName ("myApp.package.name.test.class.name");             istest = true;         } catch (ClassNotFoundException e) {             istest = false;         }          isRunningTest = new AtomicBoolean (istest);     }      return isRunningTest.get (); } 

This avoids doing the try-catch check every time you need to check the value and it only runs the check the first time you call this function.