Espresso - How can I check if an activity is launched after performing a certain action?

Question

the following is one of my Espresso test cases.

    public void testLoginAttempt() {
        Espresso.onView(ViewMatchers.withId(R.id.username)).perform(View         


        

Answer 1

You may do it as follows:

    @Test
public void testLoginAttempt() {
    Espresso.onView(ViewMatchers.withId(R.id.username)).perform(ViewActions.clearText()).perform(ViewActions.typeText("nonexistinguser@example.com"));
    Espresso.onView(ViewMatchers.withId(R.id.username)).perform(ViewActions.clearText()).perform(ViewActions.typeText("invalidpassword"));

    Intents.init();
    Espresso.onView(ViewMatchers.withId(R.id.login_button)).perform(ViewActions.click());
    Intents.release();
}

java.lang.NullPointerException is thrown if Intents.init() is not called.