How to Espresso Test in Android If an Acitivy was Started

Issue

Can someone teach me how to test the sample code below?

How to I write espresso test for this? Since no view action is required?

public class SampleActivity extends AppCompatActivity {
    @Override
    public void onCreate(@Nullable Bundle savedInstanceState) {
        Intent intent = new Intent(this, NextActivity.class);
        startActivity(intent);
    }
}

I would want to test whether the activity was actually started. Please help me. Thanks in advance.

Solution

This has been answered multiple times:

1. From obtaining the activity at the time of test execution:

How can I check if the new activity was started

2. To the usage of espresso-intents artifact (preferred option):

How to validate whether opened correct activity - Espresso

Keep in mind that the usage of IntentsTestRule might be problematic here, it used to call Intents.init() after your activity is launched, which will be too late as you will already be in the new activity. Not sure if this behavior is still in place, but you can work this around by calling init() manually in @Before method of your test class, don't forget to do Intents.release() in your teardown

Answered By - Be_Negative