UI Testing the Get Hacking Android App

espresso-intro.java

public class GreeterTest {
    @Test
    public void greeterSaysHello() {
        onView(withId(R.id.name_field)).perform(typeText("Steve"));
        onView(withId(R.id.greet_button)).perform(click());
        onView(withText("Hello Steve!")).check(matches(isDisplayed()));
    }
}