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EspressoTestUtil.java
/* * 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. */ package com.android.example.github.util; import android.graphics.Color; import android.graphics.drawable.ColorDrawable; import android.os.Bundle; import android.support.test.rule.ActivityTestRule; import android.support.v4.app.Fragment; import android.support.v4.app.FragmentActivity; import android.support.v4.app.FragmentManager; import android.view.View; import android.view.ViewGroup; import android.widget.ProgressBar; /** * Utility methods for espresso tests. */ public class EspressoTestUtil { /** * Disables progress bar animations for the views of the given activity rule * * @param activityTestRule The activity rule whose views will be checked */ public static void disableProgressBarAnimations( ActivityTestRule extends FragmentActivity> activityTestRule) { activityTestRule.getActivity().getSupportFragmentManager() .registerFragmentLifecycleCallbacks( new FragmentManager.FragmentLifecycleCallbacks() { @Override public void onFragmentViewCreated(FragmentManager fm, Fragment f, View v, Bundle savedInstanceState) { // traverse all views, if any is a progress bar, replace its animation traverseViews(v); } }, true); } private static void traverseViews(View view) { if (view instanceof ViewGroup) { traverseViewGroup((ViewGroup) view); } else { if (view instanceof ProgressBar) { disableProgressBarAnimation((ProgressBar) view); } } } private static void traverseViewGroup(ViewGroup view) { final int count = view.getChildCount(); for (int i = 0; i < count; i++) { traverseViews(view.getChildAt(i)); } } /** * necessary to run tests on older API levels where progress bar uses handler loop to animate. * * @param progressBar The progress bar whose animation will be swapped with a drawable */ private static void disableProgressBarAnimation(ProgressBar progressBar) { progressBar.setIndeterminateDrawable(new ColorDrawable(Color.BLUE)); } }