| /* |
| * Copyright (C) 2016 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.tv.tests.jank; |
| |
| import android.support.test.jank.GfxMonitor; |
| import android.support.test.jank.JankTest; |
| import androidx.test.filters.MediumTest; |
| |
| /** Jank tests for channel zapping. */ |
| @MediumTest |
| public class ChannelZappingJankTest extends LiveChannelsTestCase { |
| private static final String TAG = "ChannelZappingJankTest"; |
| |
| private static final String STARTING_CHANNEL = "13"; |
| |
| /** |
| * The minimum number of frames expected during each jank test. If there is less the test will |
| * fail. To be safe we loop the action in each test to create twice this many frames under |
| * normal conditions. |
| * |
| * <p>At least 100 frams should be chosen so there will be enough frame for the 90th, 95th, and |
| * 98th percentile measurements are significant. |
| * |
| * @see <a href="http://go/janktesthelper-best-practices">Jank Test Helper Best Practices</a> |
| */ |
| private static final int EXPECTED_FRAMES = 100; |
| |
| private static final int WARM_UP_CHANNEL_ZAPPING_COUNT = 2; |
| |
| @Override |
| protected void setUp() throws Exception { |
| super.setUp(); |
| Utils.pressKeysForChannelNumber(STARTING_CHANNEL, mDevice); |
| } |
| |
| @JankTest(expectedFrames = EXPECTED_FRAMES, beforeTest = "warmChannelZapping") |
| @GfxMonitor(processName = Utils.LIVE_CHANNELS_PROCESS_NAME) |
| public void testChannelZapping() { |
| int frameCountForOneChannelZapping = 40; // measured by hand |
| int repeat = EXPECTED_FRAMES * 2 / frameCountForOneChannelZapping; |
| for (int i = 0; i < repeat; i++) { |
| mDevice.pressDPadUp(); |
| mDevice.waitForIdle(); |
| // Press BACK to close banner. |
| mDevice.pressBack(); |
| mDevice.waitForIdle(); |
| } |
| } |
| |
| // It's public to be used with @JankTest annotation. |
| public void warmChannelZapping() { |
| for (int i = 0; i < WARM_UP_CHANNEL_ZAPPING_COUNT; ++i) { |
| mDevice.pressDPadUp(); |
| mDevice.waitForIdle(); |
| } |
| // Press BACK to close banner. |
| mDevice.pressBack(); |
| mDevice.waitForIdle(); |
| } |
| } |