wear/src/androidTest/res/layout/circular_progress_layout.xml

<?xml version="1.0" encoding="utf-8"?>
<!--
  ~ Copyright (C) 2017 The Android Open Source Project
  ~
  ~ Licensed under the Apache License, Version 2.0 (the "License");
  ~ you may not use this file except in compliance with the License.
  ~ You may obtain a copy of the License at
  ~
  ~      http://www.apache.org/licenses/LICENSE-2.0
  ~
  ~ Unless required by applicable law or agreed to in writing, software
  ~ distributed under the License is distributed on an "AS IS" BASIS,
  ~ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  ~ See the License for the specific language governing permissions and
  ~ limitations under the License.
  -->

<FrameLayout xmlns:android="http://schemas.android.com/apk/res/android"
             android:layout_width="match_parent"
             android:layout_height="match_parent"
             xmlns:app="http://schemas.android.com/apk/res-auto"
             android:orientation="vertical">
    <android.support.wear.widget.CircularProgressLayout
        android:id="@+id/circular_progress_layout"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_gravity="center"
        android:padding="10dp"
        app:strokeWidth="10dp">
        <View
            android:id="@+id/child_view"
            android:layout_width="40dp"
            android:layout_height="40dp"/>
    </android.support.wear.widget.CircularProgressLayout>
</FrameLayout >