Espresso Test Recorder - generated code

    @LargeTest
    @RunWith(AndroidJUnit4::class)
    class SignInActivityTest123 {
        @Rule
        @JvmField
        var mActivityTestRule = ActivityTestRule(SignInActivity::class.java)
        @Test
        fun signInActivityTest123() {
            val appCompatEditText = onView(
                    allOf(withId(R.id.email),
                            childAtPosition(
                                    allOf(withId(R.id.signInRoot),
                                            childAtPosition(
                                                    withId(android.R.id.content),
                                                    0)),
                                    4),
                            isDisplayed()))
            appCompatEditText.perform(replaceText(" test"), closeSoftKeyboard())
            val appCompatButton = onView(
                    allOf(withId(R.id.signIn), withText("Sign In"),
                            childAtPosition(
                                    allOf(withId(R.id.signInRoot),
                                            childAtPosition(
                                                    withId(android.R.id.content),
                                                    0)),
                                    6),
                            isDisplayed()))
            appCompatButton.perform(click())
        }
        private fun childAtPosition(
                parentMatcher: Matcher<View>, position: Int): Matcher<View> {
            return object : TypeSafeMatcher<View>() {
                override fun describeTo(description: Description) {
                    description.appendText("Child at position $position in parent ")
                    parentMatcher.describeTo(description)
                }
                public override fun matchesSafely(view: View): Boolean {
                    val parent = view.parent
                    return parent is ViewGroup && parentMatcher.matches(parent)
                            && view == parent.getChildAt(position)
                }
            }
        }
    }