Creating testing files

Let's write some test cases. To write this code, we need to create new files in the androidTest package. To do this, follow the steps:

  1. Now go to srcandroidTest | java | module_name of the project. Here is a screenshot of this directory:

  1. Create a class named MainActivityTest.kt with @RunWith(AndroidJUnit4::class) annotation. This annotation will link the test and the app features.

Let's create our very first Espresso test:

First of all, we need to connect our MainActivity class. To do this, we will initialize a variable of ActivityTestRule<MainActivity> and it will provide all the functionalities for the MainActivity ...

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