A. @Rule
fun greeterSaysHello() {
onView(withId(R.id.name_field)).do(typeText("Steve"))
onView(withId(R.id.greet_button)).do(click())
onView(withText("Hello Steve!")).check(matches(isDisplayed()))
}

B. @Test
fun 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()))
}

C. @Test
fun greeterSaysHello() {
onView(withId(R.id.name_field)).do(typeText("Steve"))
onView(withId(R.id.greet_button)).do(click())
onView(withText("Hello Steve!")).compare(matches(isDisplayed()))
}