Custom edit text layout espresso test question

CustomEditText.java

/** Espresso type into custom edit text view test **/
Espresso.onView(ViewMatchers.withId(R.id.email)).perform(ViewActions.typeTextIntoFocusedView("[email protected]"));

/** CustomEditTextLayout.java **/
public class CustomEditTextLayout extends RelativeLayout implements OnClickListener {
	private CustomEditText mEditText;
	private TextView mErrorText;

	public CustomEditTextLayout(final Context context) {
		super(context);
		init(context, null);
	}

	public CustomEditTextLayout(final Context context, final AttributeSet attrs) {
		super(context, attrs);
		init(context, attrs);
	}

	public CustomEditTextLayout(final Context context, final AttributeSet attrs, final int defStyle) {
		super(context, attrs, defStyle);
		init(context, attrs);
	}

	private int getLayoutResource() {
		return R.layout.custom_edit_text_layout;
	}

	private EditText getEditText() {
		return (EditText) findViewByChangedId(R.id.inner_edit_text);
	}

	private void init(final Context context, final AttributeSet attrs);

	public CharSequence getText() {
		if (mEditText == null) {
			return "";
		}
		return mEditText.getText();
	}
}

/** activity_layout.xml **/
<LinearLayout>
	<com.sample.widget.CustomEditTextLayout
		android:id="@+id/email" />
</LinearLayout>