activity_test.kt

@RunWith(AndroidJUnit4::class)
class CreatePostActivityTest : BaseTest() {

    @Rule
    @JvmField
    var activityTestRule = ActivityTestRule(CreatePostActivity::class.java)

    @Test
    fun createPost_WithText_Success() {
        createPost {
            enterPostText("Hello World!")
            submitPost()
            matchResultText(activityTestRule.getString(R.string.post_submitted))
        }
    }
}