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/*
* Copyright (C) 2012 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.media.tests;
import com.android.ddmlib.IDevice;
import com.android.ddmlib.testrunner.IRemoteAndroidTestRunner;
import com.android.ddmlib.testrunner.RemoteAndroidTestRunner;
import com.android.tradefed.device.DeviceNotAvailableException;
import com.android.tradefed.device.ITestDevice;
import com.android.tradefed.log.LogUtil.CLog;
import com.android.tradefed.result.BugreportCollector;
import com.android.tradefed.result.ITestInvocationListener;
import com.android.tradefed.result.InputStreamSource;
import com.android.tradefed.result.LogDataType;
import com.android.tradefed.testtype.IDeviceTest;
import com.android.tradefed.testtype.IRemoteTest;
import com.android.tradefed.util.proto.TfMetricProtoUtil;
import org.junit.Assert;
import java.io.BufferedReader;
import java.io.File;
import java.io.FileReader;
import java.io.IOException;
import java.util.HashMap;
import java.util.Map;
import java.util.regex.Matcher;
import java.util.regex.Pattern;
public class CameraShotToShotLatencyTest implements IDeviceTest, IRemoteTest {
private static final Pattern MEAN_PATTERN =
Pattern.compile("(Shot to shot latency - mean:)(\\s*)(\\d+\\.\\d*)");
private static final Pattern STANDARD_DEVIATION_PATTERN =
Pattern.compile("(Shot to shot latency - standard deviation:)(\\s*)(\\d+\\.\\d*)");
private static final String TEST_CLASS_NAME = "com.android.camera.stress.ShotToShotLatency";
private static final String TEST_PACKAGE_NAME = "com.google.android.camera.tests";
private static final String TEST_RUNNER_NAME = "android.test.InstrumentationTestRunner";
private static final String LATENCY_KEY_MEAN = "Shot2ShotLatencyMean";
private static final String LATENCY_KEY_SD = "Shot2ShotLatencySD";
private static final String TEST_RU = "CameraLatency";
private final String mOutputPath = "mediaStressOut.txt";
ITestDevice mTestDevice = null;
/**
* {@inheritDoc}
*/
@Override
public void run(ITestInvocationListener listener) throws DeviceNotAvailableException {
Assert.assertNotNull(mTestDevice);
IRemoteAndroidTestRunner runner = new RemoteAndroidTestRunner(TEST_PACKAGE_NAME,
TEST_RUNNER_NAME, mTestDevice.getIDevice());
runner.setClassName(TEST_CLASS_NAME);
BugreportCollector bugListener = new BugreportCollector(listener, mTestDevice);
bugListener.addPredicate(BugreportCollector.AFTER_FAILED_TESTCASES);
bugListener.setDescriptiveName(this.getClass().getName());
Assert.assertTrue(mTestDevice.runInstrumentationTests(runner, bugListener));
Map<String, String> metrics = parseOutputFile();
reportMetrics(bugListener, TEST_RU, metrics);
cleanupDevice();
}
/**
* {@inheritDoc}
*/
@Override
public void setDevice(ITestDevice device) {
mTestDevice = device;
}
/**
* {@inheritDoc}
*/
@Override
public ITestDevice getDevice() {
return mTestDevice;
}
/**
* Wipes the device's external memory of test collateral from prior runs.
* Note that all photos on the test device will be removed.
* @throws DeviceNotAvailableException If the device is unavailable or
* something happened while deleting files
*/
private void cleanupDevice() throws DeviceNotAvailableException {
String extStore = mTestDevice.getMountPoint(IDevice.MNT_EXTERNAL_STORAGE);
mTestDevice.executeShellCommand(String.format("rm -r %s/DCIM", extStore));
mTestDevice.executeShellCommand(String.format("rm %s/%s", extStore, mOutputPath));
}
/**
* Parses the output file generated by the underlying instrumentation test
* and returns the metrics to the main driver for later reporting.
* @return The {@link Map} that contains metrics for the test.
* @throws DeviceNotAvailableException If the device is unavailable or
* something happened while deleting files
*/
private Map<String, String> parseOutputFile() throws DeviceNotAvailableException {
BufferedReader reader = null;
File outputFile = null;
String lineMean = null, lineSd = null;
Matcher m = null;
Map<String, String> metrics = new HashMap<String, String>();
// Read in data
// Output file is only 2 lines and should look something like:
// "Shot to shot latency - mean: 1234.5678901"
// "Shot to shot latency - standard deviation: 123.45678901"
try {
outputFile = mTestDevice.pullFileFromExternal(mOutputPath);
reader = new BufferedReader(new FileReader(outputFile));
lineMean = reader.readLine();
lineSd = reader.readLine();
if ((lineMean == null) || (lineSd == null)) {
CLog.e(String.format("Unable to find output data; hit EOF: \nmean:%s\nsd:%s",
lineMean, lineSd));
} else {
m = MEAN_PATTERN.matcher(lineMean);
if (m.matches()) {
metrics.put(LATENCY_KEY_MEAN, m.group(3));
} else {
CLog.e(String.format("Unable to find mean: %s", lineMean));
}
m = STANDARD_DEVIATION_PATTERN.matcher(lineSd);
if (m.matches()) {
metrics.put(LATENCY_KEY_SD, m.group(3));
} else {
CLog.e(String.format("Unable to find standard deviation: %s", lineSd));
}
}
} catch (IOException e) {
CLog.e(String.format("IOException reading from file: %s", e.toString()));
} finally {
if (reader != null) {
try {
reader.close();
} catch (IOException e) {
CLog.e(String.format("IOException closing file: %s", e.toString()));
}
}
}
return metrics;
}
/**
* Report run metrics by creating an empty test run to stick them in.
* @param listener The {@link ITestInvocationListener} of test results
* @param runName The test name
* @param metrics The {@link Map} that contains metrics for the given test
*/
private void reportMetrics(ITestInvocationListener listener, String runName,
Map<String, String> metrics) {
InputStreamSource bugreport = mTestDevice.getBugreport();
listener.testLog("bugreport", LogDataType.BUGREPORT, bugreport);
bugreport.close();
CLog.d(String.format("About to report metrics: %s", metrics));
listener.testRunStarted(runName, 0);
listener.testRunEnded(0, TfMetricProtoUtil.upgradeConvert(metrics));
}
}
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